add teal as module

ereuse_devicehub/auth.py

@@ -1,9 +1,9 @@
 from sqlalchemy.exc import DataError
-from teal.auth import TokenAuth
-from teal.db import ResourceNotFound
 from werkzeug.exceptions import Unauthorized
 
-from ereuse_devicehub.resources.user.models import User, Session
+from ereuse_devicehub.resources.user.models import Session, User
+from ereuse_devicehub.teal.auth import TokenAuth
+from ereuse_devicehub.teal.db import ResourceNotFound
 
 
 class Auth(TokenAuth):

ereuse_devicehub/client.py

@@ -4,11 +4,11 @@ from typing import Dict, Iterable, Type, Union
 from ereuse_utils.test import JSON, Res
 from flask.testing import FlaskClient
 from flask_wtf.csrf import generate_csrf
-from teal.client import Client as TealClient
-from teal.client import Query, Status
 from werkzeug.exceptions import HTTPException
 
 from ereuse_devicehub.resources import models, schemas
+from ereuse_devicehub.teal.client import Client as TealClient
+from ereuse_devicehub.teal.client import Query, Status
 
 ResourceLike = Union[Type[Union[models.Thing, schemas.Thing]], str]
 

ereuse_devicehub/config.py

@@ -2,10 +2,6 @@ from distutils.version import StrictVersion
 from itertools import chain
 
 from decouple import config
-from teal.auth import TokenAuth
-from teal.config import Config
-from teal.enums import Currency
-from teal.utils import import_resource
 
 from ereuse_devicehub.resources import (
     action,
@@ -23,6 +19,10 @@ from ereuse_devicehub.resources.licences import licences
 from ereuse_devicehub.resources.metric import definitions as metric_def
 from ereuse_devicehub.resources.tradedocument import definitions as tradedocument
 from ereuse_devicehub.resources.versions import versions
+from ereuse_devicehub.teal.auth import TokenAuth
+from ereuse_devicehub.teal.config import Config
+from ereuse_devicehub.teal.enums import Currency
+from ereuse_devicehub.teal.utils import import_resource
 
 
 class DevicehubConfig(Config):

ereuse_devicehub/db.py

@@ -4,7 +4,8 @@ from sqlalchemy.dialects import postgresql
 from sqlalchemy.orm import sessionmaker
 from sqlalchemy.sql import expression
 from sqlalchemy_utils import view
-from teal.db import SchemaSQLAlchemy, SchemaSession
+
+from ereuse_devicehub.teal.db import SchemaSession, SchemaSQLAlchemy
 
 
 class DhSession(SchemaSession):
@@ -23,6 +24,7 @@ class DhSession(SchemaSession):
         #   flush, all the new / dirty interesting things in a variable
         #   until DeviceSearch is executed
         from ereuse_devicehub.resources.device.search import DeviceSearch
+
         DeviceSearch.update_modified_devices(session=self)
 
 
@@ -31,6 +33,7 @@ class SQLAlchemy(SchemaSQLAlchemy):
     schema of the database, as it is in the `search_path`
     defined in teal.
     """
+
     # todo add here all types of columns used so we don't have to
     #   manually import them all the time
     UUID = postgresql.UUID
@@ -60,7 +63,9 @@ def create_view(name, selectable):
     # We need to ensure views are created / destroyed before / after
     # SchemaSQLAlchemy's listeners execute
     # That is why insert=True in 'after_create'
-    event.listen(db.metadata, 'after_create', view.CreateView(name, selectable), insert=True)
+    event.listen(
+        db.metadata, 'after_create', view.CreateView(name, selectable), insert=True
+    )
     event.listen(db.metadata, 'before_drop', view.DropView(name))
     return table
 

ereuse_devicehub/devicehub.py

@@ -10,8 +10,6 @@ from ereuse_utils.session import DevicehubClient
 from flask import _app_ctx_stack, g
 from flask_login import LoginManager, current_user
 from flask_sqlalchemy import SQLAlchemy
-from teal.db import ResourceNotFound, SchemaSQLAlchemy
-from teal.teal import Teal
 
 from ereuse_devicehub.auth import Auth
 from ereuse_devicehub.client import Client, UserClient
@@ -24,6 +22,8 @@ from ereuse_devicehub.dummy.dummy import Dummy
 from ereuse_devicehub.resources.device.search import DeviceSearch
 from ereuse_devicehub.resources.inventory import Inventory, InventoryDef
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import ResourceNotFound, SchemaSQLAlchemy
+from ereuse_devicehub.teal.teal import Teal
 from ereuse_devicehub.templating import Environment
 
 

ereuse_devicehub/inventory/models.py

@@ -5,11 +5,11 @@ from flask import g
 from sqlalchemy import Column, Integer
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import backref, relationship
-from teal.db import CASCADE_OWN, URL
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import CASCADE_OWN, URL
 
 
 class Transfer(Thing):

ereuse_devicehub/marshmallow.py

@@ -1,14 +1,33 @@
 from marshmallow.fields import missing_
-from teal.db import SQLAlchemy
-from teal.marshmallow import NestedOn as TealNestedOn
 
 from ereuse_devicehub.db import db
+from ereuse_devicehub.teal.db import SQLAlchemy
+from ereuse_devicehub.teal.marshmallow import NestedOn as TealNestedOn
 
 
 class NestedOn(TealNestedOn):
     __doc__ = TealNestedOn.__doc__
 
-    def __init__(self, nested, polymorphic_on='type', db: SQLAlchemy = db, collection_class=list,
+    def __init__(
-                 default=missing_, exclude=tuple(), only_query: str = None, only=None, **kwargs):
+        self,
-        super().__init__(nested, polymorphic_on, db, collection_class, default, exclude,
+        nested,
-                         only_query, only, **kwargs)
+        polymorphic_on='type',
+        db: SQLAlchemy = db,
+        collection_class=list,
+        default=missing_,
+        exclude=tuple(),
+        only_query: str = None,
+        only=None,
+        **kwargs,
+    ):
+        super().__init__(
+            nested,
+            polymorphic_on,
+            db,
+            collection_class,
+            default,
+            exclude,
+            only_query,
+            only,
+            **kwargs,
+        )

ereuse_devicehub/query.py

@@ -1,12 +1,12 @@
 from typing import Dict, List
 
 from flask import Response, jsonify, request
-from teal.query import NestedQueryFlaskParser
 from webargs.flaskparser import FlaskParser
 
+from ereuse_devicehub.teal.query import NestedQueryFlaskParser
+
 
 class SearchQueryParser(NestedQueryFlaskParser):
-
     def parse_querystring(self, req, name, field):
         if name == 'search':
             v = FlaskParser.parse_querystring(self, req, name, field)
@@ -15,18 +15,21 @@ class SearchQueryParser(NestedQueryFlaskParser):
         return v
 
 
-def things_response(items: List[Dict],
+def things_response(
+    items: List[Dict],
     page: int = None,
     per_page: int = None,
     total: int = None,
     previous: int = None,
     next: int = None,
     url: str = None,
-                    code: int = 200) -> Response:
+    code: int = 200,
+) -> Response:
     """Generates a Devicehub API list conformant response for multiple
     things.
     """
-    response = jsonify({
+    response = jsonify(
+        {
             'items': items,
             # todo pagination should be in Header like github
             # https://developer.github.com/v3/guides/traversing-with-pagination/
@@ -35,9 +38,10 @@ def things_response(items: List[Dict],
                 'perPage': per_page,
                 'total': total,
                 'previous': previous,
-            'next': next
+                'next': next,
             },
-        'url': url or request.path
+            'url': url or request.path,
-    })
+        }
+    )
     response.status_code = code
     return response

ereuse_devicehub/resources/action/__init__.py

@@ -1,11 +1,14 @@
 from typing import Callable, Iterable, Tuple
 
-from teal.resource import Converters, Resource
-
 from ereuse_devicehub.resources.action import schemas
-from ereuse_devicehub.resources.action.views.views import (ActionView, AllocateView, DeallocateView,
+from ereuse_devicehub.resources.action.views.views import (
-                                                     LiveView)
+    ActionView,
+    AllocateView,
+    DeallocateView,
+    LiveView,
+)
 from ereuse_devicehub.resources.device.sync import Sync
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class ActionDef(Resource):
@@ -169,13 +172,32 @@ class SnapshotDef(ActionDef):
     VIEW = None
     SCHEMA = schemas.Snapshot
 
-    def __init__(self, app, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
+        self,
+        app,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
         static_url_path=None,
-                 template_folder=None, url_prefix=None, subdomain=None, url_defaults=None,
+        template_folder=None,
-                 root_path=None, cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
+        url_prefix=None,
+        subdomain=None,
+        url_defaults=None,
+        root_path=None,
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
+    ):
         url_prefix = '/{}'.format(ActionDef.resource)
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+        super().__init__(
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
         self.sync = Sync()
 
 

ereuse_devicehub/resources/action/models.py

@@ -19,7 +19,6 @@ from typing import Optional, Set, Union
 from uuid import uuid4
 
 import inflection
-import teal.db
 from boltons import urlutils
 from citext import CIText
 from dateutil.tz import tzutc
@@ -45,19 +44,8 @@ from sqlalchemy.ext.orderinglist import ordering_list
 from sqlalchemy.orm import backref, relationship, validates
 from sqlalchemy.orm.events import AttributeEvents as Events
 from sqlalchemy.util import OrderedSet
-from teal.db import (
-    CASCADE_OWN,
-    INHERIT_COND,
-    POLYMORPHIC_ID,
-    POLYMORPHIC_ON,
-    URL,
-    StrictVersionType,
-    check_lower,
-    check_range,
-)
-from teal.enums import Currency
-from teal.resource import url_for_resource
 
+import ereuse_devicehub.teal.db
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.agent.models import Agent
 from ereuse_devicehub.resources.device.metrics import TradeMetrics
@@ -88,6 +76,18 @@ from ereuse_devicehub.resources.enums import (
 from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
 from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import (
+    CASCADE_OWN,
+    INHERIT_COND,
+    POLYMORPHIC_ID,
+    POLYMORPHIC_ON,
+    URL,
+    StrictVersionType,
+    check_lower,
+    check_range,
+)
+from ereuse_devicehub.teal.enums import Currency
+from ereuse_devicehub.teal.resource import url_for_resource
 
 
 class JoinedTableMixin:
@@ -119,7 +119,11 @@ class Action(Thing):
     name.comment = """A name or title for the action. Used when searching
     for actions.
     """
-    severity = Column(teal.db.IntEnum(Severity), default=Severity.Info, nullable=False)
+    severity = Column(
+        ereuse_devicehub.teal.db.IntEnum(Severity),
+        default=Severity.Info,
+        nullable=False,
+    )
     severity.comment = Severity.__doc__
     closed = Column(Boolean, default=True, nullable=False)
     closed.comment = """Whether the author has finished the action.
@@ -548,7 +552,11 @@ class Step(db.Model):
     )
     type = Column(Unicode(STR_SM_SIZE), nullable=False)
     num = Column(SmallInteger, primary_key=True)
-    severity = Column(teal.db.IntEnum(Severity), default=Severity.Info, nullable=False)
+    severity = Column(
+        ereuse_devicehub.teal.db.IntEnum(Severity),
+        default=Severity.Info,
+        nullable=False,
+    )
     start_time = Column(db.TIMESTAMP(timezone=True), nullable=False)
     start_time.comment = Action.start_time.comment
     end_time = Column(

ereuse_devicehub/resources/action/schemas.py

@@ -21,9 +21,6 @@ from marshmallow.fields import (
 )
 from marshmallow.validate import Length, OneOf, Range
 from sqlalchemy.util import OrderedSet
-from teal.enums import Country, Currency, Subdivision
-from teal.marshmallow import IP, URL, EnumField, SanitizedStr, Version
-from teal.resource import Schema
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources import enums
@@ -48,6 +45,9 @@ from ereuse_devicehub.resources.tradedocument import schemas as s_document
 from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.user import schemas as s_user
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.enums import Country, Currency, Subdivision
+from ereuse_devicehub.teal.marshmallow import IP, URL, EnumField, SanitizedStr, Version
+from ereuse_devicehub.teal.resource import Schema
 
 
 class Action(Thing):

ereuse_devicehub/resources/action/views/trade.py

@@ -1,5 +1,4 @@
 from flask import g
-from teal.marshmallow import ValidationError
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.inventory.models import Transfer
@@ -13,6 +12,7 @@ from ereuse_devicehub.resources.action.models import (
 )
 from ereuse_devicehub.resources.lot.views import delete_from_trade
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.marshmallow import ValidationError
 
 
 class TradeView:

ereuse_devicehub/resources/action/views/views.py

@@ -8,9 +8,6 @@ import ereuse_utils
 import jwt
 from flask import current_app as app
 from flask import g, request
-from teal.db import ResourceNotFound
-from teal.marshmallow import ValidationError
-from teal.resource import View
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.query import things_response
@@ -35,6 +32,9 @@ from ereuse_devicehub.resources.action.views.snapshot import (
 )
 from ereuse_devicehub.resources.device.models import Computer, DataStorage, Device
 from ereuse_devicehub.resources.enums import Severity
+from ereuse_devicehub.teal.db import ResourceNotFound
+from ereuse_devicehub.teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.resource import View
 
 SUPPORTED_WORKBENCH = StrictVersion('11.0')
 

ereuse_devicehub/resources/agent/__init__.py

@@ -2,10 +2,10 @@ import json
 
 import click
 from boltons.typeutils import classproperty
-from teal.resource import Converters, Resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.agent import models, schemas
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class AgentDef(Resource):
@@ -19,26 +19,40 @@ class OrganizationDef(AgentDef):
     SCHEMA = schemas.Organization
     VIEW = None
 
-    def __init__(self, app, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
+        self,
+        app,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
         static_url_path=None,
-                 template_folder=None, url_prefix=None, subdomain=None, url_defaults=None,
+        template_folder=None,
-                 root_path=None):
+        url_prefix=None,
+        subdomain=None,
+        url_defaults=None,
+        root_path=None,
+    ):
         cli_commands = ((self.create_org, 'add'),)
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+        super().__init__(
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
 
     @click.argument('name')
     @click.option('--tax_id', '-t')
     @click.option('--country', '-c')
     def create_org(self, name: str, tax_id: str = None, country: str = None) -> dict:
         """Creates an organization."""
-        org = models.Organization(**self.schema.load(
+        org = models.Organization(
-            {
+            **self.schema.load({'name': name, 'taxId': tax_id, 'country': country})
-                'name': name,
+        )
-                'taxId': tax_id,
-                'country': country
-            }
-        ))
         db.session.add(org)
         db.session.commit()
         o = self.schema.dump(org)

ereuse_devicehub/resources/agent/models.py

@@ -10,14 +10,19 @@ from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.orm import backref, relationship, validates
 from sqlalchemy_utils import EmailType, PhoneNumberType
-from teal import enums
-from teal.db import INHERIT_COND, POLYMORPHIC_ID, POLYMORPHIC_ON, check_lower
-from teal.marshmallow import ValidationError
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.inventory import Inventory
 from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal import enums
+from ereuse_devicehub.teal.db import (
+    INHERIT_COND,
+    POLYMORPHIC_ID,
+    POLYMORPHIC_ON,
+    check_lower,
+)
+from ereuse_devicehub.teal.marshmallow import ValidationError
 
 
 class JoinedTableMixin:

ereuse_devicehub/resources/agent/schemas.py

@@ -1,19 +1,20 @@
-from marshmallow import fields as ma_fields, validate as ma_validate
+from marshmallow import fields as ma_fields
+from marshmallow import validate as ma_validate
 from marshmallow.fields import Email
-from teal import enums
-from teal.marshmallow import EnumField, Phone, SanitizedStr
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.models import STR_SIZE, STR_SM_SIZE
 from ereuse_devicehub.resources.schemas import Thing
+from ereuse_devicehub.teal import enums
+from ereuse_devicehub.teal.marshmallow import EnumField, Phone, SanitizedStr
 
 
 class Agent(Thing):
     id = ma_fields.UUID(dump_only=True)
     name = SanitizedStr(validate=ma_validate.Length(max=STR_SM_SIZE))
-    tax_id = SanitizedStr(lower=True,
+    tax_id = SanitizedStr(
-                          validate=ma_validate.Length(max=STR_SM_SIZE),
+        lower=True, validate=ma_validate.Length(max=STR_SM_SIZE), data_key='taxId'
-                          data_key='taxId')
+    )
     country = EnumField(enums.Country)
     telephone = Phone()
     email = Email()

ereuse_devicehub/resources/deliverynote/__init__.py

@@ -1,9 +1,8 @@
 from typing import Callable, Iterable, Tuple
 
-from teal.resource import Converters, Resource
-
 from ereuse_devicehub.resources.deliverynote import schemas
 from ereuse_devicehub.resources.deliverynote.views import DeliverynoteView
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class DeliverynoteDef(Resource):
@@ -12,7 +11,9 @@ class DeliverynoteDef(Resource):
     AUTH = True
     ID_CONVERTER = Converters.uuid
 
-    def __init__(self, app,
+    def __init__(
+        self,
+        app,
         import_name=__name__.split('.')[0],
         static_folder=None,
         static_url_path=None,
@@ -21,6 +22,17 @@ class DeliverynoteDef(Resource):
         subdomain=None,
         url_defaults=None,
         root_path=None,
-                 cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+    ):
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )

ereuse_devicehub/resources/deliverynote/models.py

@@ -5,35 +5,47 @@ from typing import Iterable
 from boltons import urlutils
 from citext import CIText
 from flask import g
-from sqlalchemy.dialects.postgresql import UUID, JSONB
+from sqlalchemy.dialects.postgresql import JSONB, UUID
-from teal.db import check_range, IntEnum
-from teal.resource import url_for_resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.enums import TransferState
 from ereuse_devicehub.resources.lot.models import Lot
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import IntEnum, check_range
+from ereuse_devicehub.teal.resource import url_for_resource
 
 
 class Deliverynote(Thing):
-    id = db.Column(UUID(as_uuid=True), primary_key=True)  # uuid is generated on init by default
+    id = db.Column(
+        UUID(as_uuid=True), primary_key=True
+    )  # uuid is generated on init by default
     document_id = db.Column(CIText(), nullable=False)
-    creator_id = db.Column(UUID(as_uuid=True),
+    creator_id = db.Column(
+        UUID(as_uuid=True),
         db.ForeignKey(User.id),
         nullable=False,
-                           default=lambda: g.user.id)
+        default=lambda: g.user.id,
+    )
     creator = db.relationship(User, primaryjoin=creator_id == User.id)
-    supplier_email = db.Column(CIText(),
+    supplier_email = db.Column(
+        CIText(),
         db.ForeignKey(User.email),
         nullable=False,
-                               default=lambda: g.user.email)
+        default=lambda: g.user.email,
-    supplier = db.relationship(User, primaryjoin=lambda: Deliverynote.supplier_email == User.email)
+    )
-    receiver_address = db.Column(CIText(),
+    supplier = db.relationship(
+        User, primaryjoin=lambda: Deliverynote.supplier_email == User.email
+    )
+    receiver_address = db.Column(
+        CIText(),
         db.ForeignKey(User.email),
         nullable=False,
-                                 default=lambda: g.user.email)
+        default=lambda: g.user.email,
-    receiver = db.relationship(User, primaryjoin=lambda: Deliverynote.receiver_address == User.email)
+    )
+    receiver = db.relationship(
+        User, primaryjoin=lambda: Deliverynote.receiver_address == User.email
+    )
     date = db.Column(db.DateTime, nullable=False, default=datetime.utcnow)
     date.comment = 'The date the DeliveryNote initiated'
     amount = db.Column(db.Integer, check_range('amount', min=0, max=100), default=0)
@@ -44,27 +56,37 @@ class Deliverynote(Thing):
     expected_devices = db.Column(JSONB, nullable=False)
     # expected_devices = db.Column(db.ARRAY(JSONB, dimensions=1), nullable=False)
     transferred_devices = db.Column(db.ARRAY(db.Integer, dimensions=1), nullable=True)
-    transfer_state = db.Column(IntEnum(TransferState), default=TransferState.Initial, nullable=False)
+    transfer_state = db.Column(
+        IntEnum(TransferState), default=TransferState.Initial, nullable=False
+    )
     transfer_state.comment = TransferState.__doc__
-    lot_id = db.Column(UUID(as_uuid=True),
+    lot_id = db.Column(UUID(as_uuid=True), db.ForeignKey(Lot.id), nullable=False)
-                       db.ForeignKey(Lot.id),
+    lot = db.relationship(
-                       nullable=False)
+        Lot,
-    lot = db.relationship(Lot,
         backref=db.backref('deliverynote', uselist=False, lazy=True),
         lazy=True,
-                          primaryjoin=Lot.id == lot_id)
+        primaryjoin=Lot.id == lot_id,
+    )
 
-    def __init__(self, document_id: str, amount: str, date,
+    def __init__(
+        self,
+        document_id: str,
+        amount: str,
+        date,
         supplier_email: str,
         expected_devices: Iterable,
-                 transfer_state: TransferState) -> None:
+        transfer_state: TransferState,
-        """Initializes a delivery note
+    ) -> None:
-        """
+        """Initializes a delivery note"""
-        super().__init__(id=uuid.uuid4(),
+        super().__init__(
-                         document_id=document_id, amount=amount, date=date,
+            id=uuid.uuid4(),
+            document_id=document_id,
+            amount=amount,
+            date=date,
             supplier_email=supplier_email,
             expected_devices=expected_devices,
-                         transfer_state=transfer_state)
+            transfer_state=transfer_state,
+        )
 
     @property
     def type(self) -> str:

ereuse_devicehub/resources/deliverynote/schemas.py

@@ -1,5 +1,4 @@
 from marshmallow import fields as f
-from teal.marshmallow import SanitizedStr, EnumField
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.deliverynote import models as m
@@ -7,20 +6,30 @@ from ereuse_devicehub.resources.enums import TransferState
 from ereuse_devicehub.resources.models import STR_SIZE
 from ereuse_devicehub.resources.schemas import Thing
 from ereuse_devicehub.resources.user import schemas as s_user
+from ereuse_devicehub.teal.marshmallow import EnumField, SanitizedStr
 
 
 class Deliverynote(Thing):
     id = f.UUID(dump_only=True)
-    document_id = SanitizedStr(validate=f.validate.Length(max=STR_SIZE),
+    document_id = SanitizedStr(
-                               required=True, data_key='documentID')
+        validate=f.validate.Length(max=STR_SIZE), required=True, data_key='documentID'
+    )
     creator = NestedOn(s_user.User, dump_only=True)
-    supplier_email = SanitizedStr(validate=f.validate.Length(max=STR_SIZE),
+    supplier_email = SanitizedStr(
-                                  load_only=True, required=True, data_key='supplierEmail')
+        validate=f.validate.Length(max=STR_SIZE),
+        load_only=True,
+        required=True,
+        data_key='supplierEmail',
+    )
     supplier = NestedOn(s_user.User, dump_only=True)
     receiver = NestedOn(s_user.User, dump_only=True)
     date = f.DateTime('iso', required=True)
-    amount = f.Integer(validate=f.validate.Range(min=0, max=100),
+    amount = f.Integer(
-                        description=m.Deliverynote.amount.__doc__)
+        validate=f.validate.Range(min=0, max=100),
+        description=m.Deliverynote.amount.__doc__,
+    )
     expected_devices = f.List(f.Dict, required=True, data_key='expectedDevices')
-    transferred_devices = f.List(f.Integer(), required=False, data_key='transferredDevices')
+    transferred_devices = f.List(
+        f.Integer(), required=False, data_key='transferredDevices'
+    )
     transfer_state = EnumField(TransferState, description=m.Lot.transfer_state.comment)

ereuse_devicehub/resources/deliverynote/views.py

@@ -2,21 +2,22 @@ import datetime
 import uuid
 
 from flask import Response, request
-from teal.resource import View
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.deliverynote.models import Deliverynote
 from ereuse_devicehub.resources.lot.models import Lot
+from ereuse_devicehub.teal.resource import View
 
 
 class DeliverynoteView(View):
-
     def post(self):
         # Create delivery note
         dn = request.get_json()
         dlvnote = Deliverynote(**dn)
         # Create a lot
-        lot_name = dlvnote.document_id + "_" + datetime.datetime.utcnow().strftime("%Y-%m-%d")
+        lot_name = (
+            dlvnote.document_id + "_" + datetime.datetime.utcnow().strftime("%Y-%m-%d")
+        )
         new_lot = Lot(name=lot_name)
         dlvnote.lot_id = new_lot.id
         db.session.add(new_lot)

ereuse_devicehub/resources/device/definitions.py

@@ -1,7 +1,5 @@
 from typing import Callable, Iterable, Tuple
 
-from teal.resource import Converters, Resource
-
 from ereuse_devicehub.resources.device import schemas
 from ereuse_devicehub.resources.device.models import Manufacturer
 from ereuse_devicehub.resources.device.views import (
@@ -9,6 +7,7 @@ from ereuse_devicehub.resources.device.views import (
     DeviceView,
     ManufacturerView,
 )
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class DeviceDef(Resource):

ereuse_devicehub/resources/device/exceptions.py

@@ -1,10 +1,11 @@
-from teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.marshmallow import ValidationError
 
 
 class MismatchBetweenIds(ValidationError):
     def __init__(self, other_device_id: int, field: str, value: str):
-        message = 'The device {} has the same {} than this one ({}).'.format(other_device_id,
+        message = 'The device {} has the same {} than this one ({}).'.format(
-                                                                             field, value)
+            other_device_id, field, value
+        )
         super().__init__(message, field_names=[field])
 
 
@@ -15,13 +16,15 @@ class NeedsId(ValidationError):
 
 
 class DeviceIsInAnotherDevicehub(ValidationError):
-    def __init__(self,
+    def __init__(
+        self,
         tag_id,
         message=None,
         field_names=None,
         fields=None,
         data=None,
         valid_data=None,
-                 **kwargs):
+        **kwargs,
+    ):
         message = message or 'Device {} is from another Devicehub.'.format(tag_id)
         super().__init__(message, field_names, fields, data, valid_data, **kwargs)

ereuse_devicehub/resources/device/models.py

@@ -35,19 +35,6 @@ from sqlalchemy.orm import ColumnProperty, backref, relationship, validates
 from sqlalchemy.util import OrderedSet
 from sqlalchemy_utils import ColorType
 from stdnum import imei, meid
-from teal.db import (
-    CASCADE_DEL,
-    POLYMORPHIC_ID,
-    POLYMORPHIC_ON,
-    URL,
-    IntEnum,
-    ResourceNotFound,
-    check_lower,
-    check_range,
-)
-from teal.enums import Layouts
-from teal.marshmallow import ValidationError
-from teal.resource import url_for_resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.device.metrics import Metrics
@@ -70,6 +57,19 @@ from ereuse_devicehub.resources.models import (
 )
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.resources.utils import hashcode
+from ereuse_devicehub.teal.db import (
+    CASCADE_DEL,
+    POLYMORPHIC_ID,
+    POLYMORPHIC_ON,
+    URL,
+    IntEnum,
+    ResourceNotFound,
+    check_lower,
+    check_range,
+)
+from ereuse_devicehub.teal.enums import Layouts
+from ereuse_devicehub.teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.resource import url_for_resource
 
 
 def create_code(context):

ereuse_devicehub/resources/device/schemas.py

@@ -17,9 +17,6 @@ from marshmallow.fields import (
 from marshmallow.validate import Length, OneOf, Range
 from sqlalchemy.util import OrderedSet
 from stdnum import imei, meid
-from teal.enums import Layouts
-from teal.marshmallow import URL, EnumField, SanitizedStr, ValidationError
-from teal.resource import Schema
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources import enums
@@ -27,6 +24,14 @@ from ereuse_devicehub.resources.device import models as m
 from ereuse_devicehub.resources.device import states
 from ereuse_devicehub.resources.models import STR_BIG_SIZE, STR_SIZE
 from ereuse_devicehub.resources.schemas import Thing, UnitCodes
+from ereuse_devicehub.teal.enums import Layouts
+from ereuse_devicehub.teal.marshmallow import (
+    URL,
+    EnumField,
+    SanitizedStr,
+    ValidationError,
+)
+from ereuse_devicehub.teal.resource import Schema
 
 
 class Device(Thing):

ereuse_devicehub/resources/device/sync.py

@@ -8,8 +8,6 @@ from flask import g
 from sqlalchemy import inspect
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.util import OrderedSet
-from teal.db import ResourceNotFound
-from teal.marshmallow import ValidationError
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.action.models import Remove
@@ -21,6 +19,8 @@ from ereuse_devicehub.resources.device.models import (
     Placeholder,
 )
 from ereuse_devicehub.resources.tag.model import Tag
+from ereuse_devicehub.teal.db import ResourceNotFound
+from ereuse_devicehub.teal.marshmallow import ValidationError
 
 # DEVICES_ALLOW_DUPLICITY = [
 #     'RamModule',

ereuse_devicehub/resources/device/views.py

@@ -14,11 +14,6 @@ from marshmallow import fields
 from marshmallow import fields as f
 from marshmallow import validate as v
 from sqlalchemy.util import OrderedSet
-from teal import query
-from teal.cache import cache
-from teal.db import ResourceNotFound
-from teal.marshmallow import ValidationError
-from teal.resource import View
 
 from ereuse_devicehub import auth
 from ereuse_devicehub.db import db
@@ -32,6 +27,11 @@ from ereuse_devicehub.resources.device.search import DeviceSearch
 from ereuse_devicehub.resources.enums import SnapshotSoftware
 from ereuse_devicehub.resources.lot.models import LotDeviceDescendants
 from ereuse_devicehub.resources.tag.model import Tag
+from ereuse_devicehub.teal import query
+from ereuse_devicehub.teal.cache import cache
+from ereuse_devicehub.teal.db import ResourceNotFound
+from ereuse_devicehub.teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.resource import View
 
 
 class OfType(f.Str):

ereuse_devicehub/resources/documents/documents.py

@@ -11,14 +11,12 @@ from typing import Callable, Iterable, Tuple
 import boltons
 import flask
 import flask_weasyprint
-import teal.marshmallow
 from boltons import urlutils
 from flask import current_app as app
 from flask import g, make_response, request
 from flask.json import jsonify
-from teal.cache import cache
-from teal.resource import Resource, View
 
+import ereuse_devicehub.teal.marshmallow
 from ereuse_devicehub import auth
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.action import models as evs
@@ -37,6 +35,8 @@ from ereuse_devicehub.resources.hash_reports import ReportHash, insert_hash, ver
 from ereuse_devicehub.resources.lot import LotView
 from ereuse_devicehub.resources.lot.models import Lot
 from ereuse_devicehub.resources.user.models import Session
+from ereuse_devicehub.teal.cache import cache
+from ereuse_devicehub.teal.resource import Resource, View
 
 
 class Format(enum.Enum):
@@ -46,7 +46,7 @@ class Format(enum.Enum):
 
 class DocumentView(DeviceView):
     class FindArgs(DeviceView.FindArgs):
-        format = teal.marshmallow.EnumField(Format, missing=None)
+        format = ereuse_devicehub.teal.marshmallow.EnumField(Format, missing=None)
 
     def get(self, id):
         """Get a collection of resources or a specific one.
@@ -71,7 +71,7 @@ class DocumentView(DeviceView):
 
         if not ids and not id:
             msg = 'Document must be an ID or UUID.'
-            raise teal.marshmallow.ValidationError(msg)
+            raise ereuse_devicehub.teal.marshmallow.ValidationError(msg)
 
         if id:
             try:
@@ -81,7 +81,7 @@ class DocumentView(DeviceView):
                     ids.append(int(id))
                 except ValueError:
                     msg = 'Document must be an ID or UUID.'
-                    raise teal.marshmallow.ValidationError(msg)
+                    raise ereuse_devicehub.teal.marshmallow.ValidationError(msg)
                 else:
                     query = devs.Device.query.filter(Device.id.in_(ids))
             else:
@@ -98,7 +98,7 @@ class DocumentView(DeviceView):
         #         try:
         #             id = int(id)
         #         except ValueError:
-        #             raise teal.marshmallow.ValidationError('Document must be an ID or UUID.')
+        #             raise ereuse_devicehub.teal.marshmallow.ValidationError('Document must be an ID or UUID.')
         #         else:
         #             query = devs.Device.query.filter_by(id=id)
         #     else:

ereuse_devicehub/resources/documents/models.py

@@ -1,20 +1,19 @@
-from flask import g
 from citext import CIText
+from flask import g
 from sortedcontainers import SortedSet
-from sqlalchemy import BigInteger, Column, Sequence, Unicode, Boolean, ForeignKey
+from sqlalchemy import BigInteger, Boolean, Column, ForeignKey, Sequence, Unicode
-from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.orm import backref
-from teal.db import CASCADE_OWN, URL
 
 from ereuse_devicehub.db import db
+from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
 from ereuse_devicehub.resources.user.models import User
-from ereuse_devicehub.resources.models import Thing, STR_SM_SIZE
+from ereuse_devicehub.teal.db import CASCADE_OWN, URL
-
 
 _sorted_documents = {
     'order_by': lambda: Document.created,
-    'collection_class': SortedSet
+    'collection_class': SortedSet,
 }
 
 
@@ -30,11 +29,15 @@ class Document(Thing):
     date.comment = """The date of document, some documents need to have one date
     """
     id_document = Column(CIText(), nullable=True)
-    id_document.comment = """The id of one document like invoice so they can be linked."""
+    id_document.comment = (
-    owner_id = db.Column(UUID(as_uuid=True),
+        """The id of one document like invoice so they can be linked."""
+    )
+    owner_id = db.Column(
+        UUID(as_uuid=True),
         db.ForeignKey(User.id),
         nullable=False,
-                         default=lambda: g.user.id)
+        default=lambda: g.user.id,
+    )
     owner = db.relationship(User, primaryjoin=owner_id == User.id)
     file_name = Column(db.CIText(), nullable=False)
     file_name.comment = """This is the name of the file when user up the document."""

ereuse_devicehub/resources/documents/schemas.py

@@ -1,34 +1,43 @@
-from marshmallow.fields import DateTime, Integer, validate, Boolean, Float
 from marshmallow import post_load
+from marshmallow.fields import Boolean, DateTime, Float, Integer, validate
 from marshmallow.validate import Range
-from teal.marshmallow import SanitizedStr, URL
+
 from ereuse_devicehub.marshmallow import NestedOn
+from ereuse_devicehub.resources.documents import models as m
 from ereuse_devicehub.resources.schemas import Thing
 from ereuse_devicehub.resources.tradedocument.models import TradeDocument
-from ereuse_devicehub.resources.documents import models as m
+from ereuse_devicehub.teal.marshmallow import URL, SanitizedStr
 
 
 class DataWipeDocument(Thing):
     __doc__ = m.DataWipeDocument.__doc__
     id = Integer(description=m.DataWipeDocument.id.comment, dump_only=True)
     url = URL(required=False, description=m.DataWipeDocument.url.comment)
-    success = Boolean(required=False, default=False, description=m.DataWipeDocument.success.comment)
+    success = Boolean(
+        required=False, default=False, description=m.DataWipeDocument.success.comment
+    )
     software = SanitizedStr(description=m.DataWipeDocument.software.comment)
-    date = DateTime(data_key='endTime', 
+    date = DateTime(
-                    required=False, 
+        data_key='endTime', required=False, description=m.DataWipeDocument.date.comment
-                    description=m.DataWipeDocument.date.comment)
+    )
-    id_document = SanitizedStr(data_key='documentId', 
+    id_document = SanitizedStr(
+        data_key='documentId',
         required=False,
         default='',
-                               description=m.DataWipeDocument.id_document.comment)
+        description=m.DataWipeDocument.id_document.comment,
-    file_name = SanitizedStr(data_key='filename',
+    )
+    file_name = SanitizedStr(
+        data_key='filename',
         default='',
         description=m.DataWipeDocument.file_name.comment,
-                             validate=validate.Length(max=100))
+        validate=validate.Length(max=100),
-    file_hash = SanitizedStr(data_key='hash',
+    )
+    file_hash = SanitizedStr(
+        data_key='hash',
         default='',
         description=m.DataWipeDocument.file_hash.comment,
-                             validate=validate.Length(max=64))
+        validate=validate.Length(max=64),
+    )
 
     @post_load
     def get_trade_document(self, data):

ereuse_devicehub/resources/image/models.py

@@ -1,28 +1,34 @@
 from uuid import uuid4
 
 from citext import CIText
-from sqlalchemy import BigInteger, Column, Enum as DBEnum, ForeignKey
+from sqlalchemy import BigInteger, Column
+from sqlalchemy import Enum as DBEnum
+from sqlalchemy import ForeignKey
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import backref, relationship
 from sqlalchemy.util import OrderedSet
-from teal.db import CASCADE_OWN
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.device.models import Device
 from ereuse_devicehub.resources.enums import ImageMimeTypes, Orientation
 from ereuse_devicehub.resources.models import Thing
+from ereuse_devicehub.teal.db import CASCADE_OWN
 
 
 class ImageList(Thing):
     id = db.Column(UUID(as_uuid=True), primary_key=True, default=uuid4)
     device_id = Column(BigInteger, ForeignKey(Device.id), nullable=False)
-    device = relationship(Device,
+    device = relationship(
+        Device,
         primaryjoin=Device.id == device_id,
-                          backref=backref('images',
+        backref=backref(
+            'images',
             lazy=True,
             cascade=CASCADE_OWN,
             order_by=lambda: ImageList.created,
-                                          collection_class=OrderedSet))
+            collection_class=OrderedSet,
+        ),
+    )
 
 
 class Image(Thing):
@@ -32,12 +38,16 @@ class Image(Thing):
     file_format = db.Column(DBEnum(ImageMimeTypes), nullable=False)
     orientation = db.Column(DBEnum(Orientation), nullable=False)
     image_list_id = Column(UUID(as_uuid=True), ForeignKey(ImageList.id), nullable=False)
-    image_list = relationship(ImageList,
+    image_list = relationship(
+        ImageList,
         primaryjoin=ImageList.id == image_list_id,
-                              backref=backref('images',
+        backref=backref(
+            'images',
             cascade=CASCADE_OWN,
             order_by=lambda: Image.created,
-                                              collection_class=OrderedSet))
+            collection_class=OrderedSet,
+        ),
+    )
 
     # todo make an image Field that converts to/from image object
     # todo which metadata we get from Photobox?

ereuse_devicehub/resources/inventory/__init__.py

@@ -2,42 +2,61 @@ import uuid
 
 import boltons.urlutils
 from flask import current_app
-from teal.db import ResourceNotFound
-from teal.resource import Resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.inventory import schema
 from ereuse_devicehub.resources.inventory.model import Inventory
+from ereuse_devicehub.teal.db import ResourceNotFound
+from ereuse_devicehub.teal.resource import Resource
 
 
 class InventoryDef(Resource):
     SCHEMA = schema.Inventory
     VIEW = None
 
-    def __init__(self, app, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
+        self,
+        app,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
         static_url_path=None,
-                 template_folder=None, url_prefix=None, subdomain=None, url_defaults=None,
+        template_folder=None,
-                 root_path=None):
+        url_prefix=None,
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+        subdomain=None,
-                         url_prefix, subdomain, url_defaults, root_path)
+        url_defaults=None,
+        root_path=None,
+    ):
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+        )
 
     @classmethod
-    def set_inventory_config(cls,
+    def set_inventory_config(
+        cls,
         name: str = None,
         org_name: str = None,
         org_id: str = None,
         tag_url: boltons.urlutils.URL = None,
-                             tag_token: uuid.UUID = None):
+        tag_token: uuid.UUID = None,
+    ):
         try:
             inventory = Inventory.current
         except ResourceNotFound:  # No inventory defined in db yet
-            inventory = Inventory(id=current_app.id,
+            inventory = Inventory(
-                                  name=name,
+                id=current_app.id, name=name, tag_provider=tag_url, tag_token=tag_token
-                                  tag_provider=tag_url,
+            )
-                                  tag_token=tag_token)
             db.session.add(inventory)
         if org_name or org_id:
             from ereuse_devicehub.resources.agent.models import Organization
+
             try:
                 org = Organization.query.filter_by(tax_id=org_id, name=org_name).one()
             except ResourceNotFound:
@@ -54,12 +73,14 @@ class InventoryDef(Resource):
         only access to this inventory.
         """
         from ereuse_devicehub.resources.user.models import User, UserInventory
+
         inv = Inventory.query.filter_by(id=current_app.id).one()
         db.session.delete(inv)
         db.session.flush()
         # Remove users that end-up without any inventory
         # todo this should be done in a trigger / action
-        users = User.query \
+        users = User.query.filter(
-            .filter(User.id.notin_(db.session.query(UserInventory.user_id).distinct()))
+            User.id.notin_(db.session.query(UserInventory.user_id).distinct())
+        )
         for user in users:
             db.session.delete(user)

ereuse_devicehub/resources/licences/licences.py

@@ -1,6 +1,8 @@
 from typing import Callable, Iterable, Tuple
+
 from flask.json import jsonify
-from teal.resource import Resource, View
+
+from ereuse_devicehub.teal.resource import Resource, View
 
 
 class LicenceView(View):
@@ -23,7 +25,9 @@ class LicencesDef(Resource):
     VIEW = None  # We do not want to create default / documents endpoint
     AUTH = False
 
-    def __init__(self, app,
+    def __init__(
+        self,
+        app,
         import_name=__name__,
         static_folder=None,
         static_url_path=None,
@@ -32,9 +36,20 @@ class LicencesDef(Resource):
         subdomain=None,
         url_defaults=None,
         root_path=None,
-                 cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+    ):
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
 
         get = {'GET'}
         d = {}

ereuse_devicehub/resources/lot/__init__.py

@@ -1,12 +1,15 @@
 import pathlib
 from typing import Callable, Iterable, Tuple
 
-from teal.resource import Converters, Resource
-
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.lot import schemas
-from ereuse_devicehub.resources.lot.views import LotBaseChildrenView, LotChildrenView, \
+from ereuse_devicehub.resources.lot.views import (
-    LotDeviceView, LotView
+    LotBaseChildrenView,
+    LotChildrenView,
+    LotDeviceView,
+    LotView,
+)
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class LotDef(Resource):
@@ -15,24 +18,49 @@ class LotDef(Resource):
     AUTH = True
     ID_CONVERTER = Converters.uuid
 
-    def __init__(self, app, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
+        self,
+        app,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
         static_url_path=None,
-                 template_folder=None, url_prefix=None, subdomain=None, url_defaults=None,
+        template_folder=None,
-                 root_path=None, cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
+        url_prefix=None,
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+        subdomain=None,
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+        url_defaults=None,
-        lot_children = LotChildrenView.as_view('lot-children', definition=self, auth=app.auth)
+        root_path=None,
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
+    ):
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
+        lot_children = LotChildrenView.as_view(
+            'lot-children', definition=self, auth=app.auth
+        )
         if self.AUTH:
             lot_children = app.auth.requires_auth(lot_children)
-        self.add_url_rule('/<{}:{}>/children'.format(self.ID_CONVERTER.value, self.ID_NAME),
+        self.add_url_rule(
+            '/<{}:{}>/children'.format(self.ID_CONVERTER.value, self.ID_NAME),
             view_func=lot_children,
-                          methods={'POST', 'DELETE'})
+            methods={'POST', 'DELETE'},
+        )
         lot_device = LotDeviceView.as_view('lot-device', definition=self, auth=app.auth)
         if self.AUTH:
             lot_device = app.auth.requires_auth(lot_device)
-        self.add_url_rule('/<{}:{}>/devices'.format(self.ID_CONVERTER.value, self.ID_NAME),
+        self.add_url_rule(
+            '/<{}:{}>/devices'.format(self.ID_CONVERTER.value, self.ID_NAME),
             view_func=lot_device,
-                          methods={'POST', 'DELETE'})
+            methods={'POST', 'DELETE'},
+        )
 
     def init_db(self, db: 'db.SQLAlchemy', exclude_schema=None):
         # Create functions

ereuse_devicehub/resources/lot/models.py

@@ -10,14 +10,14 @@ from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
 from sqlalchemy_utils import LtreeType
 from sqlalchemy_utils.types.ltree import LQUERY
-from teal.db import CASCADE_OWN, IntEnum, UUIDLtree, check_range
-from teal.resource import url_for_resource
 
 from ereuse_devicehub.db import create_view, db, exp, f
 from ereuse_devicehub.resources.device.models import Component, Device
 from ereuse_devicehub.resources.enums import TransferState
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import CASCADE_OWN, IntEnum, UUIDLtree, check_range
+from ereuse_devicehub.teal.resource import url_for_resource
 
 
 class Lot(Thing):

ereuse_devicehub/resources/lot/schemas.py

@@ -1,15 +1,14 @@
 from marshmallow import fields as f
-from teal.marshmallow import SanitizedStr, URL, EnumField
 
 from ereuse_devicehub.marshmallow import NestedOn
+from ereuse_devicehub.resources.action import schemas as s_action
 from ereuse_devicehub.resources.deliverynote import schemas as s_deliverynote
 from ereuse_devicehub.resources.device import schemas as s_device
-from ereuse_devicehub.resources.action import schemas as s_action
 from ereuse_devicehub.resources.enums import TransferState
 from ereuse_devicehub.resources.lot import models as m
 from ereuse_devicehub.resources.models import STR_SIZE
 from ereuse_devicehub.resources.schemas import Thing
-
+from ereuse_devicehub.teal.marshmallow import URL, EnumField, SanitizedStr
 
 TRADE_VALUES = (
     'id',
@@ -18,16 +17,11 @@ TRADE_VALUES = (
     'user_from.id',
     'user_to.id',
     'user_to.code',
-    'user_from.code'
+    'user_from.code',
 )
 
 
-DOCUMENTS_VALUES = (
+DOCUMENTS_VALUES = ('id', 'file_name', 'total_weight', 'trading')
-    'id',
-    'file_name',
-    'total_weight',
-    'trading'
-)
 
 
 class Old_Lot(Thing):
@@ -39,8 +33,9 @@ class Old_Lot(Thing):
     children = NestedOn('Lot', many=True, dump_only=True)
     parents = NestedOn('Lot', many=True, dump_only=True)
     url = URL(dump_only=True, description=m.Lot.url.__doc__)
-    amount = f.Integer(validate=f.validate.Range(min=0, max=100),
+    amount = f.Integer(
-                        description=m.Lot.amount.__doc__)
+        validate=f.validate.Range(min=0, max=100), description=m.Lot.amount.__doc__
+    )
     # author_id = NestedOn(s_user.User,only_query='author_id')
     owner_id = f.UUID(data_key='ownerID')
     transfer_state = EnumField(TransferState, description=m.Lot.transfer_state.comment)
@@ -54,4 +49,6 @@ class Lot(Thing):
     name = SanitizedStr(validate=f.validate.Length(max=STR_SIZE), required=True)
     description = SanitizedStr(description=m.Lot.description.comment)
     trade = f.Nested(s_action.Trade, dump_only=True, only=TRADE_VALUES)
-    documents = f.Nested('TradeDocument', many=True, dump_only=True, only=DOCUMENTS_VALUES)
+    documents = f.Nested(
+        'TradeDocument', many=True, dump_only=True, only=DOCUMENTS_VALUES
+    )

ereuse_devicehub/resources/lot/views.py

@@ -9,8 +9,6 @@ from marshmallow import Schema as MarshmallowSchema
 from marshmallow import fields as f
 from sqlalchemy import or_
 from sqlalchemy.util import OrderedSet
-from teal.marshmallow import EnumField
-from teal.resource import View
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.inventory.models import Transfer
@@ -18,6 +16,8 @@ from ereuse_devicehub.query import things_response
 from ereuse_devicehub.resources.action.models import Confirm, Revoke, Trade
 from ereuse_devicehub.resources.device.models import Computer, DataStorage, Device
 from ereuse_devicehub.resources.lot.models import Lot, Path
+from ereuse_devicehub.teal.marshmallow import EnumField
+from ereuse_devicehub.teal.resource import View
 
 
 class LotFormat(Enum):
@@ -79,7 +79,7 @@ class LotView(View):
         lot = Lot.query.filter_by(id=id).one()  # type: Lot
         return self.schema.jsonify(lot, nested=2)
 
-    # @teal.cache.cache(datetime.timedelta(minutes=5))
+    # @ereuse_devicehub.teal.cache.cache(datetime.timedelta(minutes=5))
     def find(self, args: dict):
         """Gets lots.
 

ereuse_devicehub/resources/metric/definitions.py

@@ -1,6 +1,6 @@
-from teal.resource import Resource
 from ereuse_devicehub.resources.metric.schema import Metric
 from ereuse_devicehub.resources.metric.views import MetricsView
+from ereuse_devicehub.teal.resource import Resource
 
 
 class MetricDef(Resource):

ereuse_devicehub/resources/metric/schema.py

@@ -1,11 +1,18 @@
-from teal.resource import Schema
 from marshmallow.fields import DateTime
 
+from ereuse_devicehub.teal.resource import Schema
+
+
 class Metric(Schema):
     """
     This schema filter dates for search the metrics
     """
-    start_time = DateTime(data_key='start_time', required=True,
+
-                          description="Start date for search metrics")
+    start_time = DateTime(
-    end_time = DateTime(data_key='end_time', required=True,
+        data_key='start_time',
-                        description="End date for search metrics")
+        required=True,
+        description="Start date for search metrics",
+    )
+    end_time = DateTime(
+        data_key='end_time', required=True, description="End date for search metrics"
+    )

ereuse_devicehub/resources/metric/views.py

@@ -1,11 +1,18 @@
-from flask import request, g, jsonify
 from contextlib import suppress
-from teal.resource import View
+
+from flask import g, jsonify, request
 
 from ereuse_devicehub.resources.action import schemas
-from ereuse_devicehub.resources.action.models import Allocate, Live, Action, ToRepair, ToPrepare
+from ereuse_devicehub.resources.action.models import (
+    Action,
+    Allocate,
+    Live,
+    ToPrepare,
+    ToRepair,
+)
 from ereuse_devicehub.resources.device import models as m
 from ereuse_devicehub.resources.metric.schema import Metric
+from ereuse_devicehub.teal.resource import View
 
 
 class MetricsView(View):
@@ -41,4 +48,3 @@ class MetricsView(View):
             count += 1
 
         return count
-

ereuse_devicehub/resources/schemas.py

@@ -4,10 +4,10 @@ from typing import Any
 from marshmallow import post_load
 from marshmallow.fields import DateTime, List, String
 from marshmallow.schema import SchemaMeta
-from teal.marshmallow import URL
-from teal.resource import Schema
 
 from ereuse_devicehub.resources import models as m
+from ereuse_devicehub.teal.marshmallow import URL
+from ereuse_devicehub.teal.resource import Schema
 
 
 class UnitCodes(Enum):
@@ -38,8 +38,8 @@ class UnitCodes(Enum):
 # Then the directive in our docs/config.py file reads these variables
 # generating the documentation.
 
-class Meta(type):
 
+class Meta(type):
     def __new__(cls, *args, **kw) -> Any:
         base_name = args[1][0].__name__
         y = super().__new__(cls, *args, **kw)
@@ -47,7 +47,7 @@ class Meta(type):
         return y
 
 
-SchemaMeta.__bases__ = Meta,
+SchemaMeta.__bases__ = (Meta,)
 
 
 @classmethod
@@ -70,9 +70,7 @@ value.
 
 class Thing(Schema):
     type = String(description=_type_description)
-    same_as = List(URL(dump_only=True),
+    same_as = List(URL(dump_only=True), dump_only=True, data_key='sameAs')
-                   dump_only=True,
-                   data_key='sameAs')
     updated = DateTime('iso', dump_only=True, description=m.Thing.updated.comment)
     created = DateTime('iso', dump_only=True, description=m.Thing.created.comment)
 

ereuse_devicehub/resources/tag/__init__.py

@@ -3,14 +3,18 @@ import pathlib
 
 from click import argument, option
 from ereuse_utils import cli
-from teal.resource import Converters, Resource
-from teal.teal import Teal
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.device.definitions import DeviceDef
 from ereuse_devicehub.resources.tag import schema
 from ereuse_devicehub.resources.tag.model import Tag
-from ereuse_devicehub.resources.tag.view import TagDeviceView, TagView, get_device_from_tag
+from ereuse_devicehub.resources.tag.view import (
+    TagDeviceView,
+    TagView,
+    get_device_from_tag,
+)
+from ereuse_devicehub.teal.resource import Converters, Resource
+from ereuse_devicehub.teal.teal import Teal
 
 
 class TagDef(Resource):
@@ -25,48 +29,77 @@ class TagDef(Resource):
     'By default set to the actual Devicehub.'
     CLI_SCHEMA = schema.Tag(only=('id', 'provider', 'org', 'secondary'))
 
-    def __init__(self, app: Teal, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
+        self,
+        app: Teal,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
         static_url_path=None,
-                 template_folder=None, url_prefix=None, subdomain=None, url_defaults=None,
+        template_folder=None,
-                 root_path=None):
+        url_prefix=None,
-        cli_commands = (
+        subdomain=None,
-            (self.create_tag, 'add'),
+        url_defaults=None,
-            (self.create_tags_csv, 'add-csv')
+        root_path=None,
+    ):
+        cli_commands = ((self.create_tag, 'add'), (self.create_tags_csv, 'add-csv'))
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
         )
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
 
         # DeviceTagView URLs
-        device_view = TagDeviceView.as_view('tag-device-view', definition=self, auth=app.auth)
+        device_view = TagDeviceView.as_view(
+            'tag-device-view', definition=self, auth=app.auth
+        )
         if self.AUTH:
             device_view = app.auth.requires_auth(device_view)
-        self.add_url_rule('/<{0.ID_CONVERTER.value}:{0.ID_NAME}>/device'.format(self),
+        self.add_url_rule(
+            '/<{0.ID_CONVERTER.value}:{0.ID_NAME}>/device'.format(self),
             view_func=device_view,
-                          methods={'GET'})
+            methods={'GET'},
-        self.add_url_rule('/<{0.ID_CONVERTER.value}:tag_id>/'.format(self) +
+        )
-                          'device/<{0.ID_CONVERTER.value}:device_id>'.format(DeviceDef),
+        self.add_url_rule(
+            '/<{0.ID_CONVERTER.value}:tag_id>/'.format(self)
+            + 'device/<{0.ID_CONVERTER.value}:device_id>'.format(DeviceDef),
             view_func=device_view,
-                          methods={'PUT'})
+            methods={'PUT'},
-        self.add_url_rule('/<{0.ID_CONVERTER.value}:tag_id>/'.format(self) +
+        )
-                          'device/<{0.ID_CONVERTER.value}:device_id>'.format(DeviceDef),
+        self.add_url_rule(
+            '/<{0.ID_CONVERTER.value}:tag_id>/'.format(self)
+            + 'device/<{0.ID_CONVERTER.value}:device_id>'.format(DeviceDef),
             view_func=device_view,
-                          methods={'DELETE'})
+            methods={'DELETE'},
+        )
 
     @option('-u', '--owner', help=OWNER_H)
     @option('-o', '--org', help=ORG_H)
     @option('-p', '--provider', help=PROV_H)
     @option('-s', '--sec', help=Tag.secondary.comment)
     @argument('id')
-    def create_tag(self,
+    def create_tag(
+        self,
         id: str,
         org: str = None,
         owner: str = None,
         sec: str = None,
-                   provider: str = None):
+        provider: str = None,
+    ):
         """Create a tag with the given ID."""
-        db.session.add(Tag(**self.schema.load(
+        db.session.add(
+            Tag(
+                **self.schema.load(
                     dict(id=id, owner=owner, org=org, secondary=sec, provider=provider)
-        )))
+                )
+            )
+        )
         db.session.commit()
 
     @option('-u', '--owner', help=OWNER_H)
@@ -83,7 +116,17 @@ class TagDef(Resource):
         """
         with path.open() as f:
             for id, sec in csv.reader(f):
-                db.session.add(Tag(**self.schema.load(
+                db.session.add(
-                    dict(id=id, owner=owner, org=org, secondary=sec, provider=provider)
+                    Tag(
-                )))
+                        **self.schema.load(
+                            dict(
+                                id=id,
+                                owner=owner,
+                                org=org,
+                                secondary=sec,
+                                provider=provider,
+                            )
+                        )
+                    )
+                )
         db.session.commit()

ereuse_devicehub/resources/tag/model.py

@@ -3,12 +3,9 @@ from typing import Set
 
 from boltons import urlutils
 from flask import g
-from sqlalchemy import BigInteger, Column, ForeignKey, UniqueConstraint, Sequence
+from sqlalchemy import BigInteger, Column, ForeignKey, Sequence, UniqueConstraint
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import backref, relationship, validates
-from teal.db import DB_CASCADE_SET_NULL, Query, URL
-from teal.marshmallow import ValidationError
-from teal.resource import url_for_resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.agent.models import Organization
@@ -16,6 +13,9 @@ from ereuse_devicehub.resources.device.models import Device
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.resources.utils import hashcode
+from ereuse_devicehub.teal.db import DB_CASCADE_SET_NULL, URL, Query
+from ereuse_devicehub.teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.resource import url_for_resource
 
 
 class Tags(Set['Tag']):
@@ -26,51 +26,59 @@ class Tags(Set['Tag']):
         return ', '.join(format(tag, format_spec) for tag in self).strip()
 
 
-
-
 class Tag(Thing):
-    internal_id = Column(BigInteger, Sequence('tag_internal_id_seq'), unique=True, nullable=False)
+    internal_id = Column(
+        BigInteger, Sequence('tag_internal_id_seq'), unique=True, nullable=False
+    )
     internal_id.comment = """The identifier of the tag for this database. Used only
     internally for software; users should not use this.
     """
     id = Column(db.CIText(), primary_key=True)
     id.comment = """The ID of the tag."""
-    owner_id = Column(UUID(as_uuid=True),
+    owner_id = Column(
+        UUID(as_uuid=True),
         ForeignKey(User.id),
         primary_key=True,
         nullable=False,
-                      default=lambda: g.user.id)
+        default=lambda: g.user.id,
+    )
     owner = relationship(User, primaryjoin=owner_id == User.id)
-    org_id = Column(UUID(as_uuid=True),
+    org_id = Column(
+        UUID(as_uuid=True),
         ForeignKey(Organization.id),
         # If we link with the Organization object this instance
         # will be set as persistent and added to session
         # which is something we don't want to enforce by default
-                    default=lambda: Organization.get_default_org_id())
+        default=lambda: Organization.get_default_org_id(),
-    org = relationship(Organization,
+    )
+    org = relationship(
+        Organization,
         backref=backref('tags', lazy=True),
         primaryjoin=Organization.id == org_id,
-                       collection_class=set)
+        collection_class=set,
+    )
     """The organization that issued the tag."""
     provider = Column(URL())
     provider.comment = """The tag provider URL. If None, the provider is
     this Devicehub.
     """
-    device_id = Column(BigInteger,
+    device_id = Column(
+        BigInteger,
         # We don't want to delete the tag on device deletion, only set to null
-                       ForeignKey(Device.id, ondelete=DB_CASCADE_SET_NULL))
+        ForeignKey(Device.id, ondelete=DB_CASCADE_SET_NULL),
-    device = relationship(Device,
+    )
+    device = relationship(
+        Device,
         backref=backref('tags', lazy=True, collection_class=Tags),
-                          primaryjoin=Device.id == device_id)
+        primaryjoin=Device.id == device_id,
+    )
     """The device linked to this tag."""
     secondary = Column(db.CIText(), index=True)
     secondary.comment = """A secondary identifier for this tag.
     It has the same constraints as the main one. Only needed in special cases.
     """
 
-    __table_args__ = (
+    __table_args__ = (db.Index('device_id_index', device_id, postgresql_using='hash'),)
-        db.Index('device_id_index', device_id, postgresql_using='hash'),
-    )
 
     def __init__(self, id: str, **kwargs) -> None:
         super().__init__(id=id, **kwargs)
@@ -99,13 +107,16 @@ class Tag(Thing):
     @validates('provider')
     def use_only_domain(self, _, url: URL):
         if url.path:
-            raise ValidationError('Provider can only contain scheme and host',
+            raise ValidationError(
-                                  field_names=['provider'])
+                'Provider can only contain scheme and host', field_names=['provider']
+            )
         return url
 
     __table_args__ = (
         UniqueConstraint(id, owner_id, name='one tag id per owner'),
-        UniqueConstraint(secondary, owner_id, name='one secondary tag per organization')
+        UniqueConstraint(
+            secondary, owner_id, name='one secondary tag per organization'
+        ),
     )
 
     @property

ereuse_devicehub/resources/tag/schema.py

@@ -1,6 +1,5 @@
 from marshmallow.fields import Boolean
 from sqlalchemy.util import OrderedSet
-from teal.marshmallow import SanitizedStr, URL
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.agent.schemas import Organization
@@ -8,6 +7,7 @@ from ereuse_devicehub.resources.device.schemas import Device
 from ereuse_devicehub.resources.schemas import Thing
 from ereuse_devicehub.resources.tag import model as m
 from ereuse_devicehub.resources.user.schemas import User
+from ereuse_devicehub.teal.marshmallow import URL, SanitizedStr
 
 
 def without_slash(x: str) -> bool:
@@ -16,12 +16,10 @@ def without_slash(x: str) -> bool:
 
 
 class Tag(Thing):
-    id = SanitizedStr(lower=True,
+    id = SanitizedStr(
-                      description=m.Tag.id.comment,
+        lower=True, description=m.Tag.id.comment, validator=without_slash, required=True
-                      validator=without_slash,
+    )
-                      required=True)
+    provider = URL(description=m.Tag.provider.comment, validator=without_slash)
-    provider = URL(description=m.Tag.provider.comment,
-                   validator=without_slash)
     device = NestedOn(Device, dump_only=True)
     owner = NestedOn(User, only_query='id')
     org = NestedOn(Organization, collection_class=OrderedSet, only_query='id')

ereuse_devicehub/resources/tag/view.py

@@ -1,14 +1,16 @@
-from flask import Response, current_app as app, g, redirect, request
+from flask import Response
+from flask import current_app as app
+from flask import g, redirect, request
 from flask_sqlalchemy import Pagination
-from teal.marshmallow import ValidationError
-from teal.resource import View, url_for_resource
 
 from ereuse_devicehub import auth
 from ereuse_devicehub.db import db
 from ereuse_devicehub.query import things_response
-from ereuse_devicehub.resources.utils import hashcode
 from ereuse_devicehub.resources.device.models import Device
 from ereuse_devicehub.resources.tag import Tag
+from ereuse_devicehub.resources.utils import hashcode
+from ereuse_devicehub.teal.marshmallow import ValidationError
+from ereuse_devicehub.teal.resource import View, url_for_resource
 
 
 class TagView(View):
@@ -34,13 +36,19 @@ class TagView(View):
 
     @auth.Auth.requires_auth
     def find(self, args: dict):
-        tags = Tag.query.filter(Tag.is_printable_q()) \
+        tags = (
-            .filter_by(owner=g.user) \
+            Tag.query.filter(Tag.is_printable_q())
-            .order_by(Tag.created.desc()) \
+            .filter_by(owner=g.user)
-            .paginate(per_page=200)  # type: Pagination
+            .order_by(Tag.created.desc())
+            .paginate(per_page=200)
+        )  # type: Pagination
         return things_response(
             self.schema.dump(tags.items, many=True, nested=0),
-            tags.page, tags.per_page, tags.total, tags.prev_num, tags.next_num
+            tags.page,
+            tags.per_page,
+            tags.total,
+            tags.prev_num,
+            tags.next_num,
         )
 
     def _create_many_regular_tags(self, num: int):
@@ -48,7 +56,9 @@ class TagView(View):
         tags = [Tag(id=tag_id, provider=g.inventory.tag_provider) for tag_id in tags_id]
         db.session.add_all(tags)
         db.session().final_flush()
-        response = things_response(self.schema.dump(tags, many=True, nested=1), code=201)
+        response = things_response(
+            self.schema.dump(tags, many=True, nested=1), code=201
+        )
         db.session.commit()
         return response
 

ereuse_devicehub/resources/tradedocument/definitions.py

@@ -1,7 +1,7 @@
-from teal.resource import Converters, Resource
-
 from ereuse_devicehub.resources.tradedocument import schemas
 from ereuse_devicehub.resources.tradedocument.views import TradeDocumentView
+from ereuse_devicehub.teal.resource import Converters, Resource
+
 
 class TradeDocumentDef(Resource):
     SCHEMA = schemas.TradeDocument

ereuse_devicehub/resources/tradedocument/models.py

@@ -7,12 +7,12 @@ from sortedcontainers import SortedSet
 from sqlalchemy import BigInteger, Column, Sequence
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import backref
-from teal.db import CASCADE_OWN, URL
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.enums import Severity
 from ereuse_devicehub.resources.models import Thing
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import CASCADE_OWN, URL
 
 _sorted_documents = {
     'order_by': lambda: TradeDocument.created,

ereuse_devicehub/resources/tradedocument/schemas.py

@@ -1,10 +1,13 @@
-from marshmallow.fields import DateTime, Integer, Float, validate
+from marshmallow.fields import DateTime, Float, Integer, validate
-from teal.marshmallow import SanitizedStr, URL
-# from marshmallow import ValidationError, validates_schema
 
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.schemas import Thing
 from ereuse_devicehub.resources.tradedocument import models as m
+from ereuse_devicehub.teal.marshmallow import URL, SanitizedStr
+
+# from marshmallow import ValidationError, validates_schema
+
+
 # from ereuse_devicehub.resources.lot import schemas as s_lot
 
 
@@ -12,20 +15,28 @@ class TradeDocument(Thing):
     __doc__ = m.TradeDocument.__doc__
     id = Integer(description=m.TradeDocument.id.comment, dump_only=True)
     date = DateTime(required=False, description=m.TradeDocument.date.comment)
-    id_document = SanitizedStr(data_key='documentId', 
+    id_document = SanitizedStr(
+        data_key='documentId',
+        default='',
+        description=m.TradeDocument.id_document.comment,
+    )
+    description = SanitizedStr(
         default='',
-                               description=m.TradeDocument.id_document.comment)
-    description = SanitizedStr(default='', 
         description=m.TradeDocument.description.comment,
-                               validate=validate.Length(max=500))
+        validate=validate.Length(max=500),
-    file_name = SanitizedStr(data_key='filename',
+    )
+    file_name = SanitizedStr(
+        data_key='filename',
         default='',
         description=m.TradeDocument.file_name.comment,
-                             validate=validate.Length(max=100))
+        validate=validate.Length(max=100),
-    file_hash = SanitizedStr(data_key='hash',
+    )
+    file_hash = SanitizedStr(
+        data_key='hash',
         default='',
         description=m.TradeDocument.file_hash.comment,
-                             validate=validate.Length(max=64))
+        validate=validate.Length(max=64),
+    )
     url = URL(description=m.TradeDocument.url.comment)
     lot = NestedOn('Lot', only_query='id', description=m.TradeDocument.lot.__doc__)
     trading = SanitizedStr(dump_only=True, description='')

ereuse_devicehub/resources/tradedocument/views.py

@@ -1,18 +1,20 @@
 import os
 import time
 from datetime import datetime
-from flask import current_app as app, request, g, Response
+
+from flask import Response
+from flask import current_app as app
+from flask import g, request
 from marshmallow import ValidationError
-from teal.resource import View
 
 from ereuse_devicehub.db import db
-from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.action.models import ConfirmDocument
 from ereuse_devicehub.resources.hash_reports import ReportHash
+from ereuse_devicehub.resources.tradedocument.models import TradeDocument
+from ereuse_devicehub.teal.resource import View
 
 
 class TradeDocumentView(View):
-
     def one(self, id: str):
         doc = TradeDocument.query.filter_by(id=id, owner=g.user).one()
         return self.schema.jsonify(doc)
@@ -33,10 +35,9 @@ class TradeDocumentView(View):
         trade = doc.lot.trade
         if trade:
             trade.documents.add(doc)
-            confirm = ConfirmDocument(action=trade,
+            confirm = ConfirmDocument(
-                              user=g.user,
+                action=trade, user=g.user, devices=set(), documents={doc}
-                              devices=set(),
+            )
-                              documents={doc})
             db.session.add(confirm)
         db.session.add(doc)
         db.session().final_flush()

ereuse_devicehub/resources/user/__init__.py

@@ -2,12 +2,12 @@ from typing import Iterable
 
 from click import argument, option
 from flask import current_app
-from teal.resource import Converters, Resource
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.user import schemas
 from ereuse_devicehub.resources.user.models import User
 from ereuse_devicehub.resources.user.views import UserView, login, logout
+from ereuse_devicehub.teal.resource import Converters, Resource
 
 
 class UserDef(Resource):
@@ -16,49 +16,88 @@ class UserDef(Resource):
     ID_CONVERTER = Converters.uuid
     AUTH = True
 
-    def __init__(self, app, import_name=__name__.split('.')[0], static_folder=None,
+    def __init__(
-                 static_url_path=None, template_folder=None, url_prefix=None, subdomain=None,
+        self,
-                 url_defaults=None, root_path=None):
+        app,
+        import_name=__name__.split('.')[0],
+        static_folder=None,
+        static_url_path=None,
+        template_folder=None,
+        url_prefix=None,
+        subdomain=None,
+        url_defaults=None,
+        root_path=None,
+    ):
         cli_commands = ((self.create_user, 'add'),)
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+        super().__init__(
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
         self.add_url_rule('/login/', view_func=login, methods={'POST'})
         logout_view = app.auth.requires_auth(logout)
         self.add_url_rule('/logout/', view_func=logout_view, methods={'GET'})
 
     @argument('email')
-    @option('-i', '--inventory',
+    @option(
+        '-i',
+        '--inventory',
         multiple=True,
-            help='Inventories user has access to. By default this one.')
+        help='Inventories user has access to. By default this one.',
-    @option('-a', '--agent',
+    )
+    @option(
+        '-a',
+        '--agent',
         help='Create too an Individual agent representing this user, '
-                 'and give a name to this individual.')
+        'and give a name to this individual.',
+    )
     @option('-c', '--country', help='The country of the agent (if --agent is set).')
     @option('-t', '--telephone', help='The telephone of the agent (if --agent is set).')
     @option('-t', '--tax-id', help='The tax id of the agent (if --agent is set).')
     @option('-p', '--password', prompt=True, hide_input=True, confirmation_prompt=True)
-    def create_user(self, email: str,
+    def create_user(
+        self,
+        email: str,
         password: str,
         inventory: Iterable[str] = tuple(),
         agent: str = None,
         country: str = None,
         telephone: str = None,
-                    tax_id: str = None) -> dict:
+        tax_id: str = None,
+    ) -> dict:
         """Create an user.
 
         If ``--agent`` is passed, it creates too an ``Individual``
         agent that represents the user.
         """
         from ereuse_devicehub.resources.agent.models import Individual
-        u = self.SCHEMA(only={'email', 'password'}, exclude=('token',)) \
+
-            .load({'email': email, 'password': password})
+        u = self.SCHEMA(only={'email', 'password'}, exclude=('token',)).load(
+            {'email': email, 'password': password}
+        )
         if inventory:
             from ereuse_devicehub.resources.inventory import Inventory
+
             inventory = Inventory.query.filter(Inventory.id.in_(inventory))
         user = User(**u, inventories=inventory)
-        agent = Individual(**current_app.resources[Individual.t].schema.load(
+        agent = Individual(
-            dict(name=agent, email=email, country=country, telephone=telephone, taxId=tax_id)
+            **current_app.resources[Individual.t].schema.load(
-        ))
+                dict(
+                    name=agent,
+                    email=email,
+                    country=country,
+                    telephone=telephone,
+                    taxId=tax_id,
+                )
+            )
+        )
         user.individuals.add(agent)
         db.session.add(user)
         db.session.commit()

ereuse_devicehub/resources/user/models.py

@@ -6,12 +6,12 @@ from flask_login import UserMixin
 from sqlalchemy import BigInteger, Boolean, Column, Sequence
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy_utils import EmailType, PasswordType
-from teal.db import CASCADE_OWN, URL, IntEnum
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.enums import SessionType
 from ereuse_devicehub.resources.inventory.model import Inventory
 from ereuse_devicehub.resources.models import STR_SIZE, Thing
+from ereuse_devicehub.teal.db import CASCADE_OWN, URL, IntEnum
 
 
 class User(UserMixin, Thing):

ereuse_devicehub/resources/user/schemas.py

@@ -1,12 +1,12 @@
 from marshmallow import post_dump
-from marshmallow.fields import Email, String, UUID
+from marshmallow.fields import UUID, Email, String
-from teal.marshmallow import SanitizedStr
 
 from ereuse_devicehub import auth
 from ereuse_devicehub.marshmallow import NestedOn
 from ereuse_devicehub.resources.agent.schemas import Individual
 from ereuse_devicehub.resources.inventory.schema import Inventory
 from ereuse_devicehub.resources.schemas import Thing
+from ereuse_devicehub.teal.marshmallow import SanitizedStr
 
 
 class Session(Thing):
@@ -19,13 +19,16 @@ class User(Thing):
     password = SanitizedStr(load_only=True, required=True)
     individuals = NestedOn(Individual, many=True, dump_only=True)
     name = SanitizedStr()
-    token = String(dump_only=True,
+    token = String(
+        dump_only=True,
         description='Use this token in an Authorization header to access the app.'
-                               'The token can change overtime.')
+        'The token can change overtime.',
+    )
     inventories = NestedOn(Inventory, many=True, dump_only=True)
     code = String(dump_only=True, description='Code of inactive accounts')
 
-    def __init__(self,
+    def __init__(
+        self,
         only=None,
         exclude=('token',),
         prefix='',
@@ -33,13 +36,16 @@ class User(Thing):
         context=None,
         load_only=(),
         dump_only=(),
-                 partial=False):
+        partial=False,
+    ):
         """Instantiates the User.
 
         By default we exclude token from both load/dump
         so they are not taken / set in normal usage by mistake.
         """
-        super().__init__(only, exclude, prefix, many, context, load_only, dump_only, partial)
+        super().__init__(
+            only, exclude, prefix, many, context, load_only, dump_only, partial
+        )
 
     @post_dump
     def base64encode_token(self, data: dict):

ereuse_devicehub/resources/user/views.py

@@ -2,11 +2,11 @@ from uuid import UUID, uuid4
 
 from flask import g, request
 from flask.json import jsonify
-from teal.resource import View
 
 from ereuse_devicehub.db import db
 from ereuse_devicehub.resources.user.exceptions import WrongCredentials
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.resource import View
 
 
 class UserView(View):
@@ -19,7 +19,9 @@ def login():
     user_s = g.resource_def.SCHEMA(only=('email', 'password'))  # type: UserS
     # noinspection PyArgumentList
     u = request.get_json(schema=user_s)
-    user = User.query.filter_by(email=u['email'], active=True, phantom=False).one_or_none()
+    user = User.query.filter_by(
+        email=u['email'], active=True, phantom=False
+    ).one_or_none()
     if user and user.password == u['password']:
         schema_with_token = g.resource_def.SCHEMA(exclude=set())
         return schema_with_token.jsonify(user)

ereuse_devicehub/resources/versions/versions.py

@@ -1,16 +1,16 @@
-import flask
 import json
-import requests
-import teal.marshmallow
-
 from typing import Callable, Iterable, Tuple
 from urllib.parse import urlparse
-from flask import make_response, g
-from flask.json import jsonify
-from teal.resource import Resource, View
 
-from ereuse_devicehub.resources.inventory.model import Inventory
+import flask
+import requests
+from flask import g, make_response
+from flask.json import jsonify
+
+import ereuse_devicehub.teal.marshmallow
 from ereuse_devicehub import __version__
+from ereuse_devicehub.resources.inventory.model import Inventory
+from ereuse_devicehub.teal.resource import Resource, View
 
 
 def get_tag_version(app):
@@ -29,6 +29,7 @@ def get_tag_version(app):
     else:
         return {}
 
+
 class VersionView(View):
     def get(self, *args, **kwargs):
         """Get version of DeviceHub and ereuse-tag."""
@@ -48,7 +49,9 @@ class VersionDef(Resource):
     VIEW = None  # We do not want to create default / documents endpoint
     AUTH = False
 
-    def __init__(self, app,
+    def __init__(
+        self,
+        app,
         import_name=__name__,
         static_folder=None,
         static_url_path=None,
@@ -57,9 +60,20 @@ class VersionDef(Resource):
         subdomain=None,
         url_defaults=None,
         root_path=None,
-                 cli_commands: Iterable[Tuple[Callable, str or None]] = tuple()):
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
-        super().__init__(app, import_name, static_folder, static_url_path, template_folder,
+    ):
-                         url_prefix, subdomain, url_defaults, root_path, cli_commands)
+        super().__init__(
+            app,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+            cli_commands,
+        )
 
         d = {'devicehub': __version__, "ereuse_tag": "0.0.0"}
         get = {'GET'}

ereuse_devicehub/teal/auth.py

@@ -0,0 +1,93 @@
+import base64
+from functools import wraps
+from typing import Callable
+
+from flask import current_app, g, request
+from werkzeug.datastructures import Authorization
+from werkzeug.exceptions import Unauthorized
+
+
+class Auth:
+    """
+    Authentication handler for Teal.
+
+    To authenticate the user (perform login):
+    1. Set Resource.AUTH to True, or manually decorate the view with
+      @auth.requires_auth
+    2. Extend any subclass of this one (like TokenAuth).
+    3. Implement the authenticate method with the authentication logic.
+       For example, in TokenAuth here you get the user from the token.
+    5. Set in your teal the Auth class you have created so
+       teal can use it.
+    """
+
+    API_DOCS = {
+        'type': 'http',
+        'description:': 'HTTP Basic scheme',
+        'name': 'Authorization',
+        'in': 'header',
+        'scheme': 'basic',
+    }
+
+    @classmethod
+    def requires_auth(cls, f: Callable):
+        """
+        Decorate a view enforcing authentication (logged in user).
+        """
+
+        @wraps(f)
+        def decorated(*args, **kwargs):
+            auth = request.authorization
+            if not auth:
+                raise Unauthorized('Provide proper authorization credentials')
+            current_app.auth.perform_auth(auth)
+            return f(*args, **kwargs)
+
+        return decorated
+
+    def perform_auth(self, auth: Authorization):
+        """
+        Authenticate an user. This loads the user.
+
+        An exception (expected Unauthorized) is raised if
+        authentication failed.
+        """
+        g.user = self.authenticate(auth.username, auth.password)
+
+    def authenticate(self, username: str, password: str) -> object:
+        """
+        The authentication logic. The result of this method is
+        a user or a raised exception, like Werkzeug's Unauthorized,
+        if authentication failed.
+
+        :raise: Unauthorized Authentication failed.
+        :return: The user object.
+        """
+        raise NotImplementedError()
+
+
+class TokenAuth(Auth):
+    API_DOCS = Auth.API_DOCS.copy()
+    API_DOCS['description'] = 'Basic scheme with token.'
+
+    def authenticate(self, token: str, *args, **kw) -> object:
+        """
+        The result of this method is
+        a user or a raised exception if authentication failed.
+
+        :raise: Unauthorized Authentication failed.
+        :return The user object.
+        """
+        raise NotImplementedError()
+
+    @staticmethod
+    def encode(value: str):
+        """Creates a suitable Token that can be sent to a client
+        and sent back.
+        """
+        return base64.b64encode(str.encode(str(value) + ':')).decode()
+
+    @staticmethod
+    def decode(value: str):
+        """Decodes a token generated by ``encode``."""
+        return base64.b64decode(value.encode()).decode()[:-1]

ereuse_devicehub/teal/cache.py

@@ -0,0 +1,28 @@
+import datetime
+from functools import wraps
+
+from flask import Response, make_response
+
+
+def cache(expires: datetime.timedelta = None):
+    """Sets HTTP cache for now + passed-in time.
+
+    Example usage::
+
+        @app.route('/map')
+        @header_cache(expires=datetime.datetime(seconds=50))
+        def index():
+          return render_template('index.html')
+    """
+
+    def cache_decorator(view):
+        @wraps(view)
+        def cache_func(*args, **kwargs):
+            r = make_response(view(*args, **kwargs))  # type: Response
+            r.expires = datetime.datetime.now(datetime.timezone.utc) + expires
+            r.cache_control.public = True
+            return r
+
+        return cache_func
+
+    return cache_decorator

ereuse_devicehub/teal/cli.py

@@ -0,0 +1,13 @@
+from flask.testing import FlaskCliRunner
+
+
+class TealCliRunner(FlaskCliRunner):
+    """The same as FlaskCliRunner but with invoke's
+    'catch_exceptions' as False.
+    """
+
+    def invoke(self, *args, cli=None, **kwargs):
+        kwargs.setdefault('catch_exceptions', False)
+        r = super().invoke(cli, args, **kwargs)
+        assert r.exit_code == 0, 'CLI code {}: {}'.format(r.exit_code, r.output)
+        return r

ereuse_devicehub/teal/client.py

@@ -0,0 +1,181 @@
+from typing import Any, Iterable, Tuple, Type, Union
+
+from boltons.urlutils import URL
+from ereuse_utils.test import JSON
+from ereuse_utils.test import Client as EreuseUtilsClient
+from ereuse_utils.test import Res
+from werkzeug.exceptions import HTTPException
+
+from ereuse_devicehub.teal.marshmallow import ValidationError
+
+Status = Union[int, Type[HTTPException], Type[ValidationError]]
+Query = Iterable[Tuple[str, Any]]
+
+
+class Client(EreuseUtilsClient):
+    """A REST interface to a Teal app."""
+
+    def open(
+        self,
+        uri: str,
+        res: str = None,
+        status: Status = 200,
+        query: Query = tuple(),
+        accept=JSON,
+        content_type=JSON,
+        item=None,
+        headers: dict = None,
+        token: str = None,
+        **kw,
+    ) -> Res:
+        headers = headers or {}
+        if res:
+            resource_url = self.application.resources[res].url_prefix + '/'
+            uri = URL(uri).navigate(resource_url).to_text()
+        if token:
+            headers['Authorization'] = 'Basic {}'.format(token)
+        res = super().open(
+            uri, status, query, accept, content_type, item, headers, **kw
+        )
+        # ereuse-utils checks for status code
+        # here we check for specific type
+        # (when response: {'type': 'foobar', 'code': 422})
+        _status = getattr(status, 'code', status)
+        if not isinstance(status, int) and res[1].status_code == _status:
+            assert (
+                status.__name__ == res[0]['type']
+            ), 'Expected exception {0} but it was {1}'.format(
+                status.__name__, res[0]['type']
+            )
+        return res
+
+    def get(
+        self,
+        uri: str = '',
+        res: str = None,
+        query: Query = tuple(),
+        status: Status = 200,
+        item=None,
+        accept: str = JSON,
+        headers: dict = None,
+        token: str = None,
+        **kw,
+    ) -> Res:
+        """
+        Performs GET.
+
+        :param uri: The uri where to GET from. This is optional, as you
+                    can build the URI too through ``res`` and ``item``.
+        :param res: The resource where to GET from, if any.
+                    If this is set, the client will try to get the
+                    url from the resource definition.
+        :param query: The query params in a dict. This method
+                      automatically converts the dict to URL params,
+                      and if the dict had nested dictionaries, those
+                      are converted to JSON.
+        :param status: A status code or exception to assert.
+        :param item: The id of a resource to GET from, if any.
+        :param accept: The accept headers. By default
+                       ``application/json``.
+        :param headers: A dictionary of header name - header value.
+        :param token: A token to add to an ``Authentication`` header.
+        :return: A tuple containing 1. a dict (if content-type is JSON)
+                 or a str with the data, and 2. the ``Response`` object.
+        """
+        kw['res'] = res
+        kw['token'] = token
+        return super().get(uri, query, item, status, accept, headers, **kw)
+
+    def post(
+        self,
+        data: str or dict,
+        uri: str = '',
+        res: str = None,
+        query: Query = tuple(),
+        status: Status = 201,
+        content_type: str = JSON,
+        accept: str = JSON,
+        headers: dict = None,
+        token: str = None,
+        **kw,
+    ) -> Res:
+        kw['res'] = res
+        kw['token'] = token
+        return super().post(
+            uri, data, query, status, content_type, accept, headers, **kw
+        )
+
+    def patch(
+        self,
+        data: str or dict,
+        uri: str = '',
+        res: str = None,
+        query: Query = tuple(),
+        item=None,
+        status: Status = 200,
+        content_type: str = JSON,
+        accept: str = JSON,
+        token: str = None,
+        headers: dict = None,
+        **kw,
+    ) -> Res:
+        kw['res'] = res
+        kw['token'] = token
+        return super().patch(
+            uri, data, query, status, content_type, item, accept, headers, **kw
+        )
+
+    def put(
+        self,
+        data: str or dict,
+        uri: str = '',
+        res: str = None,
+        query: Query = tuple(),
+        item=None,
+        status: Status = 201,
+        content_type: str = JSON,
+        accept: str = JSON,
+        token: str = None,
+        headers: dict = None,
+        **kw,
+    ) -> Res:
+        kw['res'] = res
+        kw['token'] = token
+        return super().put(
+            uri, data, query, status, content_type, item, accept, headers, **kw
+        )
+
+    def delete(
+        self,
+        uri: str = '',
+        res: str = None,
+        query: Query = tuple(),
+        status: Status = 204,
+        item=None,
+        accept: str = JSON,
+        headers: dict = None,
+        token: str = None,
+        **kw,
+    ) -> Res:
+        kw['res'] = res
+        kw['token'] = token
+        return super().delete(uri, query, item, status, accept, headers, **kw)
+
+    def post_get(
+        self,
+        res: str,
+        data: str or dict,
+        query: Query = tuple(),
+        status: Status = 200,
+        content_type: str = JSON,
+        accept: str = JSON,
+        headers: dict = None,
+        key='id',
+        token: str = None,
+        **kw,
+    ) -> Res:
+        """Performs post and then gets the resource through its key."""
+        r, _ = self.post(
+            '', data, res, query, status, content_type, accept, token, headers, **kw
+        )
+        return self.get(res=res, item=r[key])

ereuse_devicehub/teal/config.py

@@ -0,0 +1,72 @@
+from typing import Dict, Set, Type
+
+from boltons.typeutils import issubclass
+
+from ereuse_devicehub.teal.resource import Resource
+
+
+class Config:
+    """
+    The configuration class.
+
+    Subclass and set here your config values.
+    """
+
+    RESOURCE_DEFINITIONS = set()  # type: Set[Type[Resource]]
+    """
+    A list of resource definitions to load.
+    """
+
+    SQLALCHEMY_DATABASE_URI = None  # type: str
+    """
+    The access to the main Database.
+    """
+    SQLALCHEMY_BINDS = {}  # type: Dict[str, str]
+    """
+    Optional extra databases. See `here <http://flask-sqlalchemy.pocoo.org
+    /2.3/binds/#referring-to-binds>`_ how bind your models to different
+    databases.
+    """
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+    """
+    Disables flask-sqlalchemy notification system. 
+    Save resources and hides a warning by flask-sqlalchemy itself.
+    
+    See `this answer in Stackoverflow for more info
+    <https://stackoverflow.com/a/33790196>`_. 
+    """
+
+    API_DOC_CONFIG_TITLE = 'Teal'
+    API_DOC_CONFIG_VERSION = '0.1'
+    """
+    Configuration options for the api docs. They are the parameters
+    passed to `apispec <http://apispec.readthedocs.io/en/
+    latest/api_core.html#apispec.APISpec>`_. Prefix the configuration
+    names with ``API_DOC_CONFIG_``.
+    """
+    API_DOC_CLASS_DISCRIMINATOR = None
+    """
+    Configuration options for the api docs class definitions.
+    
+    You can pass any `schema definition <https://github.com/OAI/
+    OpenAPI-Specification/blob/master/versions/2.0.md#schemaObject>`_
+    prefiex by ``API_DOC_CLASS_`` like in the example above.
+    """
+
+    CORS_ORIGINS = '*'
+    CORS_EXPOSE_HEADERS = 'Authorization'
+    CORS_ALLOW_HEADERS = 'Content-Type', 'Authorization'
+    """
+    Configuration for CORS. See the options you can pass by in `Flask-Cors 
+    <https://flask-cors.corydolphin.com/en/latest/api.html#extension>`_,
+    exactly in **Parameters**, like the ones above.
+    """
+
+    def __init__(self) -> None:
+        """
+        :param db: Optional. Set the ``SQLALCHEMY_DATABASE_URI`` param.
+        """
+        for r in self.RESOURCE_DEFINITIONS:
+            assert issubclass(
+                r, Resource
+            ), '{0!r} is not a subclass of Resource'.format(r)

ereuse_devicehub/teal/db.py

@@ -0,0 +1,382 @@
+import enum
+import ipaddress
+import re
+import uuid
+from distutils.version import StrictVersion
+from typing import Any, Type, Union
+
+from boltons.typeutils import classproperty
+from boltons.urlutils import URL as BoltonsUrl
+from ereuse_utils import if_none_return_none
+from flask_sqlalchemy import BaseQuery
+from flask_sqlalchemy import Model as _Model
+from flask_sqlalchemy import SignallingSession
+from flask_sqlalchemy import SQLAlchemy as FlaskSQLAlchemy
+from sqlalchemy import CheckConstraint, SmallInteger, cast, event, types
+from sqlalchemy.dialects.postgresql import ARRAY, INET
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.orm.exc import MultipleResultsFound, NoResultFound
+from sqlalchemy_utils import Ltree
+from werkzeug.exceptions import BadRequest, NotFound, UnprocessableEntity
+
+
+class ResourceNotFound(NotFound):
+    # todo show id
+    def __init__(self, resource: str) -> None:
+        super().__init__('The {} doesn\'t exist.'.format(resource))
+
+
+class MultipleResourcesFound(UnprocessableEntity):
+    # todo show id
+    def __init__(self, resource: str) -> None:
+        super().__init__(
+            'Expected only one {} but multiple where found'.format(resource)
+        )
+
+
+POLYMORPHIC_ID = 'polymorphic_identity'
+POLYMORPHIC_ON = 'polymorphic_on'
+INHERIT_COND = 'inherit_condition'
+DEFAULT_CASCADE = 'save-update, merge'
+CASCADE_DEL = '{}, delete'.format(DEFAULT_CASCADE)
+CASCADE_OWN = '{}, delete-orphan'.format(CASCADE_DEL)
+DB_CASCADE_SET_NULL = 'SET NULL'
+
+
+class Query(BaseQuery):
+    def one(self):
+        try:
+            return super().one()
+        except NoResultFound:
+            raise ResourceNotFound(self._entities[0]._label_name)
+        except MultipleResultsFound:
+            raise MultipleResourcesFound(self._entities[0]._label_name)
+
+
+class Model(_Model):
+    # Just provide typing
+    query_class = Query  # type: Type[Query]
+    query = None  # type: Query
+
+    @classproperty
+    def t(cls):
+        return cls.__name__
+
+
+class Session(SignallingSession):
+    """A SQLAlchemy session that raises better exceptions."""
+
+    def _flush(self, objects=None):
+        try:
+            super()._flush(objects)
+        except IntegrityError as e:
+            raise DBError(e)  # This creates a suitable subclass
+
+
+class SchemaSession(Session):
+    """Session that is configured to use a PostgreSQL's Schema.
+
+    Idea from `here <https://stackoverflow.com/a/9299021>`_.
+    """
+
+    def __init__(self, db, autocommit=False, autoflush=True, **options):
+        super().__init__(db, autocommit, autoflush, **options)
+        self.execute('SET search_path TO {}, public'.format(self.app.schema))
+
+
+class StrictVersionType(types.TypeDecorator):
+    """StrictVersion support for SQLAlchemy as Unicode.
+
+    Idea `from official documentation <http://docs.sqlalchemy.org/en/
+    latest/core/custom_types.html#augmenting-existing-types>`_.
+    """
+
+    impl = types.Unicode
+
+    @if_none_return_none
+    def process_bind_param(self, value, dialect):
+        return str(value)
+
+    @if_none_return_none
+    def process_result_value(self, value, dialect):
+        return StrictVersion(value)
+
+
+class URL(types.TypeDecorator):
+    """bolton's URL support for SQLAlchemy as Unicode."""
+
+    impl = types.Unicode
+
+    @if_none_return_none
+    def process_bind_param(self, value: BoltonsUrl, dialect):
+        return value.to_text()
+
+    @if_none_return_none
+    def process_result_value(self, value, dialect):
+        return BoltonsUrl(value)
+
+
+class IP(types.TypeDecorator):
+    """ipaddress support for SQLAlchemy as PSQL INET."""
+
+    impl = INET
+
+    @if_none_return_none
+    def process_bind_param(self, value, dialect):
+        return str(value)
+
+    @if_none_return_none
+    def process_result_value(self, value, dialect):
+        return ipaddress.ip_address(value)
+
+
+class IntEnum(types.TypeDecorator):
+    """SmallInteger -- IntEnum"""
+
+    impl = SmallInteger
+
+    def __init__(self, enumeration: Type[enum.IntEnum], *args, **kwargs):
+        self.enum = enumeration
+        super().__init__(*args, **kwargs)
+
+    @if_none_return_none
+    def process_bind_param(self, value, dialect):
+        assert isinstance(value, self.enum), 'Value should be instance of {}'.format(
+            self.enum
+        )
+        return value.value
+
+    @if_none_return_none
+    def process_result_value(self, value, dialect):
+        return self.enum(value)
+
+
+class UUIDLtree(Ltree):
+    """This Ltree only wants UUIDs as paths elements."""
+
+    def __init__(self, path_or_ltree: Union[Ltree, uuid.UUID]):
+        """
+        Creates a new Ltree. If the passed-in value is an UUID,
+        it automatically generates a suitable string for Ltree.
+        """
+        if not isinstance(path_or_ltree, Ltree):
+            if isinstance(path_or_ltree, uuid.UUID):
+                path_or_ltree = self.convert(path_or_ltree)
+            else:
+                raise ValueError(
+                    'Ltree does not accept {}'.format(path_or_ltree.__class__)
+                )
+        super().__init__(path_or_ltree)
+
+    @staticmethod
+    def convert(id: uuid.UUID) -> str:
+        """Transforms an uuid to a ready-to-ltree str representation."""
+        return str(id).replace('-', '_')
+
+
+def check_range(column: str, min=1, max=None) -> CheckConstraint:
+    """Database constraint for ranged values."""
+    constraint = (
+        '>= {}'.format(min) if max is None else 'BETWEEN {} AND {}'.format(min, max)
+    )
+    return CheckConstraint('{} {}'.format(column, constraint))
+
+
+def check_lower(field_name: str):
+    """Constraint that checks if the string is lower case."""
+    return CheckConstraint(
+        '{0} = lower({0})'.format(field_name),
+        name='{} must be lower'.format(field_name),
+    )
+
+
+class ArrayOfEnum(ARRAY):
+    """
+    Allows to use Arrays of Enums for psql.
+
+    From `the docs <http://docs.sqlalchemy.org/en/latest/dialects/
+    postgresql.html?highlight=array#postgresql-array-of-enum>`_
+    and `this issue <https://bitbucket.org/zzzeek/sqlalchemy/issues/
+    3467/array-of-enums-does-not-allow-assigning>`_.
+    """
+
+    def bind_expression(self, bindvalue):
+        return cast(bindvalue, self)
+
+    def result_processor(self, dialect, coltype):
+        super_rp = super(ArrayOfEnum, self).result_processor(dialect, coltype)
+
+        def handle_raw_string(value):
+            inner = re.match(r'^{(.*)}$', value).group(1)
+            return inner.split(',') if inner else []
+
+        def process(value):
+            if value is None:
+                return None
+            return super_rp(handle_raw_string(value))
+
+        return process
+
+
+class SQLAlchemy(FlaskSQLAlchemy):
+    """
+    Enhances :class:`flask_sqlalchemy.SQLAlchemy` by adding our
+    Session and Model.
+    """
+
+    StrictVersionType = StrictVersionType
+    URL = URL
+    IP = IP
+    IntEnum = IntEnum
+    UUIDLtree = UUIDLtree
+    ArrayOfEnum = ArrayOfEnum
+
+    def __init__(
+        self,
+        app=None,
+        use_native_unicode=True,
+        session_options=None,
+        metadata=None,
+        query_class=BaseQuery,
+        model_class=Model,
+    ):
+        super().__init__(
+            app, use_native_unicode, session_options, metadata, query_class, model_class
+        )
+
+    def create_session(self, options):
+        """As parent's create_session but adding our Session."""
+        return sessionmaker(class_=Session, db=self, **options)
+
+
+class SchemaSQLAlchemy(SQLAlchemy):
+    """
+    Enhances :class:`flask_sqlalchemy.SQLAlchemy` by using PostgreSQL's
+    schemas when creating/dropping tables.
+
+    See :attr:`teal.config.SCHEMA` for more info.
+    """
+
+    def __init__(
+        self,
+        app=None,
+        use_native_unicode=True,
+        session_options=None,
+        metadata=None,
+        query_class=Query,
+        model_class=Model,
+    ):
+        super().__init__(
+            app, use_native_unicode, session_options, metadata, query_class, model_class
+        )
+        # The following listeners set psql's search_path to the correct
+        # schema and create the schemas accordingly
+
+        # Specifically:
+        # 1. Creates the schemas and set ``search_path`` to app's config SCHEMA
+        event.listen(self.metadata, 'before_create', self.create_schemas)
+        # Set ``search_path`` to default (``public``)
+        event.listen(self.metadata, 'after_create', self.revert_connection)
+        # Set ``search_path`` to app's config SCHEMA
+        event.listen(self.metadata, 'before_drop', self.set_search_path)
+        # Set ``search_path`` to default (``public``)
+        event.listen(self.metadata, 'after_drop', self.revert_connection)
+
+    def create_all(self, bind='__all__', app=None, exclude_schema=None):
+        """Create all tables.
+
+        :param exclude_schema: Do not create tables in this schema.
+        """
+        app = self.get_app(app)
+        # todo how to pass exclude_schema without contaminating self?
+        self._exclude_schema = exclude_schema
+        super().create_all(bind, app)
+
+    def _execute_for_all_tables(self, app, bind, operation, skip_tables=False):
+        # todo how to pass app to our event listeners without contaminating self?
+        self._app = self.get_app(app)
+        super()._execute_for_all_tables(app, bind, operation, skip_tables)
+
+    def get_tables_for_bind(self, bind=None):
+        """As super method, but only getting tales that are not
+        part of exclude_schema, if set.
+        """
+        tables = super().get_tables_for_bind(bind)
+        if getattr(self, '_exclude_schema', None):
+            tables = [t for t in tables if t.schema != self._exclude_schema]
+        return tables
+
+    def create_schemas(self, target, connection, **kw):
+        """
+        Create the schemas and set the active schema.
+
+        From `here <https://bitbucket.org/zzzeek/sqlalchemy/issues/3914/
+        extend-create_all-drop_all-to-include#comment-40129850>`_.
+        """
+        schemas = set(table.schema for table in target.tables.values() if table.schema)
+        if self._app.schema:
+            schemas.add(self._app.schema)
+        for schema in schemas:
+            connection.execute('CREATE SCHEMA IF NOT EXISTS {}'.format(schema))
+        self.set_search_path(target, connection)
+
+    def set_search_path(self, _, connection, **kw):
+        app = self.get_app()
+        if app.schema:
+            connection.execute('SET search_path TO {}, public'.format(app.schema))
+
+    def revert_connection(self, _, connection, **kw):
+        connection.execute('SET search_path TO public')
+
+    def create_session(self, options):
+        """As parent's create_session but adding our SchemaSession."""
+        return sessionmaker(class_=SchemaSession, db=self, **options)
+
+    def drop_schema(self, app=None, schema=None):
+        """Nukes a schema and everything that depends on it."""
+        app = self.get_app(app)
+        schema = schema or app.schema
+        with self.engine.begin() as conn:
+            conn.execute('DROP SCHEMA IF EXISTS {} CASCADE'.format(schema))
+
+    def has_schema(self, schema: str) -> bool:
+        """Does the db have the passed-in schema?"""
+        return self.engine.execute(
+            "SELECT EXISTS(SELECT 1 FROM pg_catalog.pg_namespace WHERE nspname='{}')".format(
+                schema
+            )
+        ).scalar()
+
+
+class DBError(BadRequest):
+    """An Error from the database.
+
+    This helper error is used to map SQLAlchemy's IntegrityError
+    to more precise errors (like UniqueViolation) that are understood
+    as a client-ready HTTP Error.
+
+    When instantiating the class it auto-selects the best error.
+    """
+
+    def __init__(self, origin: IntegrityError):
+        super().__init__(str(origin))
+        self._origin = origin
+
+    def __new__(cls, origin: IntegrityError) -> Any:
+        msg = str(origin)
+        if 'unique constraint' in msg.lower():
+            return super().__new__(UniqueViolation)
+        return super().__new__(cls)
+
+
+class UniqueViolation(DBError):
+    def __init__(self, origin: IntegrityError):
+        super().__init__(origin)
+        self.constraint = self.description.split('"')[1]
+        self.field_name = None
+        self.field_value = None
+        if isinstance(origin.params, dict):
+            self.field_name, self.field_value = next(
+                (k, v) for k, v in origin.params.items() if k in self.constraint
+            )

ereuse_devicehub/teal/json_util.py

@@ -0,0 +1,11 @@
+import ereuse_utils
+from flask.json import JSONEncoder as FlaskJSONEncoder
+from sqlalchemy.ext.baked import Result
+from sqlalchemy.orm import Query
+
+
+class TealJSONEncoder(ereuse_utils.JSONEncoder, FlaskJSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, (Result, Query)):
+            return tuple(obj)
+        return super().default(obj)

ereuse_devicehub/teal/marshmallow.py

@@ -0,0 +1,346 @@
+import ipaddress
+from distutils.version import StrictVersion
+from typing import Type, Union
+
+import colour
+from boltons import strutils, urlutils
+from ereuse_utils import if_none_return_none
+from flask import current_app as app
+from flask import g
+from marshmallow import utils
+from marshmallow.fields import Field
+from marshmallow.fields import Nested as MarshmallowNested
+from marshmallow.fields import String
+from marshmallow.fields import ValidationError as _ValidationError
+from marshmallow.fields import missing_
+from marshmallow.validate import Validator
+from marshmallow_enum import EnumField as _EnumField
+from sqlalchemy_utils import PhoneNumber
+
+from ereuse_devicehub.teal import db as tealdb
+from ereuse_devicehub.teal.resource import Schema
+
+
+class Version(Field):
+    """A python StrictVersion field, like '1.0.1'."""
+
+    @if_none_return_none
+    def _serialize(self, value, attr, obj):
+        return str(value)
+
+    @if_none_return_none
+    def _deserialize(self, value, attr, data):
+        return StrictVersion(value)
+
+
+class Color(Field):
+    """Any color field that can be accepted by the colour package."""
+
+    @if_none_return_none
+    def _serialize(self, value, attr, obj):
+        return str(value)
+
+    @if_none_return_none
+    def _deserialize(self, value, attr, data):
+        return colour.Color(value)
+
+
+class URL(Field):
+    def __init__(
+        self,
+        require_path=False,
+        default=missing_,
+        attribute=None,
+        data_key=None,
+        error=None,
+        validate=None,
+        required=False,
+        allow_none=None,
+        load_only=False,
+        dump_only=False,
+        missing=missing_,
+        error_messages=None,
+        **metadata,
+    ):
+        super().__init__(
+            default,
+            attribute,
+            data_key,
+            error,
+            validate,
+            required,
+            allow_none,
+            load_only,
+            dump_only,
+            missing,
+            error_messages,
+            **metadata,
+        )
+        self.require_path = require_path
+
+    @if_none_return_none
+    def _serialize(self, value, attr, obj):
+        return value.to_text()
+
+    @if_none_return_none
+    def _deserialize(self, value, attr, data):
+        url = urlutils.URL(value)
+        if url.scheme or url.host:
+            if self.require_path:
+                if url.path and url.path != '/':
+                    return url
+            else:
+                return url
+        raise ValueError('Not a valid URL.')
+
+
+class IP(Field):
+    @if_none_return_none
+    def _serialize(
+        self, value: Union[ipaddress.IPv4Address, ipaddress.IPv6Address], attr, obj
+    ):
+        return str(value)
+
+    @if_none_return_none
+    def _deserialize(self, value: str, attr, data):
+        return ipaddress.ip_address(value)
+
+
+class Phone(Field):
+    @if_none_return_none
+    def _serialize(self, value: PhoneNumber, attr, obj):
+        return value.international
+
+    @if_none_return_none
+    def _deserialize(self, value: str, attr, data):
+        phone = PhoneNumber(value)
+        if not phone.is_valid_number():
+            raise ValueError('The phone number is invalid.')
+        return phone
+
+
+class SanitizedStr(String):
+    """String field that only has regular user strings.
+
+    A String that removes whitespaces,
+    optionally makes it lower, and invalidates HTML or ANSI codes.
+    """
+
+    def __init__(
+        self,
+        lower=False,
+        default=missing_,
+        attribute=None,
+        data_key=None,
+        error=None,
+        validate=None,
+        required=False,
+        allow_none=None,
+        load_only=False,
+        dump_only=False,
+        missing=missing_,
+        error_messages=None,
+        **metadata,
+    ):
+        super().__init__(
+            default,
+            attribute,
+            data_key,
+            error,
+            validate,
+            required,
+            allow_none,
+            load_only,
+            dump_only,
+            missing,
+            error_messages,
+            **metadata,
+        )
+        self.lower = lower
+
+    def _deserialize(self, value, attr, data):
+        out = super()._deserialize(value, attr, data)
+        out = out.strip()
+        if self.lower:
+            out = out.lower()
+        if strutils.html2text(out) != out:
+            self.fail('invalid')
+        elif strutils.strip_ansi(out) != out:
+            self.fail('invalid')
+        return out
+
+
+class NestedOn(MarshmallowNested):
+    """A relationship with a resource schema that emulates the
+    relationships in SQLAlchemy.
+
+    It allows instantiating SQLA models when deserializing NestedOn
+    values in two fashions:
+
+    - If the :attr:`.only_query` is set, NestedOn expects a scalar
+      (str, int...) value when deserializing, and tries to get
+      an existing model that has such value. Typical case is setting
+      :attr:`.only_query` to ``id``, and then pass-in the id
+      of a nested model. In such case NestedOn will change the id
+      for the model representing the ID.
+    - If :attr:`.only_query` is not set, NestedOn expects the
+      value to deserialize to be a dictionary, and instantiates
+      the model with the values of the dictionary. In this case
+      NestedOn requires :attr:`.polymorphic_on` to be set as a field,
+      usually called ``type``, that references a subclass of Model;
+      ex. {'type': 'SpecificDevice', ...}.
+
+    When serializing from :meth:`teal.resource.Schema.jsonify` it
+    serializes nested relationships up to a defined limit.
+
+    :param polymorphic_on: The field name that discriminates
+                               the type of object. For example ``type``.
+                               Then ``type`` contains the class name
+                               of a subschema of ``nested``.
+    """
+
+    NESTED_LEVEL = '_level'
+    NESTED_LEVEL_MAX = '_level_max'
+
+    def __init__(
+        self,
+        nested,
+        polymorphic_on: str,
+        db: tealdb.SQLAlchemy,
+        collection_class=list,
+        default=missing_,
+        exclude=tuple(),
+        only_query: str = None,
+        only=None,
+        **kwargs,
+    ):
+        self.polymorphic_on = polymorphic_on
+        self.collection_class = collection_class
+        self.only_query = only_query
+        assert isinstance(polymorphic_on, str)
+        assert isinstance(only, str) or only is None
+        super().__init__(nested, default, exclude, only, **kwargs)
+        self.db = db
+
+    def _deserialize(self, value, attr, data):
+        if self.many and not utils.is_collection(value):
+            self.fail('type', input=value, type=value.__class__.__name__)
+
+        if isinstance(self.only, str):  # self.only is a field name
+            if self.many:
+                value = self.collection_class({self.only: v} for v in value)
+            else:
+                value = {self.only: value}
+        # New code:
+        parent_schema = app.resources[super().schema.t].SCHEMA
+        if self.many:
+            return self.collection_class(
+                self._deserialize_one(single, parent_schema, attr) for single in value
+            )
+        else:
+            return self._deserialize_one(value, parent_schema, attr)
+
+    def _deserialize_one(self, value, parent_schema: Type[Schema], attr):
+        if isinstance(value, dict) and self.polymorphic_on in value:
+            type = value[self.polymorphic_on]
+            resource = app.resources[type]
+            if not issubclass(resource.SCHEMA, parent_schema):
+                raise ValidationError(
+                    '{} is not a sub-type of {}'.format(type, parent_schema.t),
+                    field_names=[attr],
+                )
+            schema = resource.SCHEMA(
+                only=self.only,
+                exclude=self.exclude,
+                context=getattr(self.parent, 'context', {}),
+                load_only=self._nested_normalized_option('load_only'),
+                dump_only=self._nested_normalized_option('dump_only'),
+            )
+            schema.ordered = getattr(self.parent, 'ordered', False)
+            value = schema.load(value)
+            model = self._model(type)(**value)
+        elif self.only_query:  # todo test only_query
+            model = (
+                self._model(parent_schema.t)
+                .query.filter_by(**{self.only_query: value})
+                .one()
+            )
+        else:
+            raise ValidationError(
+                '\'Type\' field required to disambiguate resources.', field_names=[attr]
+            )
+        assert isinstance(model, tealdb.Model)
+        return model
+
+    def _model(self, type: str) -> Type[tealdb.Model]:
+        """Given the type of a model it returns the model class."""
+        return self.db.Model._decl_class_registry.data[type]()
+
+    def serialize(self, attr: str, obj, accessor=None) -> dict:
+        """See class docs."""
+        if g.get(NestedOn.NESTED_LEVEL) == g.get(NestedOn.NESTED_LEVEL_MAX):
+            # Idea from https://marshmallow-sqlalchemy.readthedocs.io
+            # /en/latest/recipes.html#smart-nested-field
+            # Gets the FK of the relationship instead of the full object
+            # This won't work for many-many relationships (as they are lists)
+            # In such case return None
+            # todo is this the behaviour we want?
+            return getattr(obj, attr + '_id', None)
+        setattr(g, NestedOn.NESTED_LEVEL, g.get(NestedOn.NESTED_LEVEL) + 1)
+        ret = super().serialize(attr, obj, accessor)
+        setattr(g, NestedOn.NESTED_LEVEL, g.get(NestedOn.NESTED_LEVEL) - 1)
+        return ret
+
+
+class IsType(Validator):
+    """
+    Validator which succeeds if the value it is passed is a registered
+    resource type.
+
+    :param parent: If set, type must be a subtype of such resource.
+                   By default accept any resource.
+    """
+
+    # todo remove if not needed
+    no_type = 'Type does not exist.'
+    no_subtype = 'Type is not a descendant type of {parent}'
+
+    def __init__(self, parent: str = None) -> None:
+        self.parent = parent  # type: str
+
+    def _repr_args(self):
+        return 'parent={0!r}'.format(self.parent)
+
+    def __call__(self, type: str):
+        assert not self.parent or self.parent in app.resources
+        try:
+            r = app.resources[type]
+            if self.parent:
+                if not issubclass(r.__class__, app.resources[self.parent].__class__):
+                    raise ValidationError(self.no_subtype.format(self.parent))
+        except KeyError:
+            raise ValidationError(self.no_type)
+
+
+class ValidationError(_ValidationError):
+    code = 422
+
+
+class EnumField(_EnumField):
+    """
+    An EnumField that allows
+    generating OpenApi enums through Apispec.
+    """
+
+    def __init__(
+        self,
+        enum,
+        by_value=False,
+        load_by=None,
+        dump_by=None,
+        error='',
+        *args,
+        **kwargs,
+    ):
+        super().__init__(enum, by_value, load_by, dump_by, error, *args, **kwargs)
+        self.metadata['enum'] = [e.name for e in enum]

ereuse_devicehub/teal/query.py

@@ -0,0 +1,294 @@
+import json
+from json import JSONDecodeError
+
+from ereuse_utils import flatten_mixed
+from marshmallow import Schema as MarshmallowSchema
+from marshmallow.fields import Boolean, Field, List, Nested, Str, missing_
+from sqlalchemy import Column, between, or_
+from webargs.flaskparser import FlaskParser
+
+
+class ListQuery(List):
+    """Base class for list-based queries."""
+
+    def __init__(self, column: Column, cls_or_instance, **kwargs):
+        self.column = column
+        super().__init__(cls_or_instance, **kwargs)
+
+
+class Between(ListQuery):
+    """
+    Generates a `Between` SQL statement.
+
+    This method wants the user to provide exactly two parameters:
+    min and max::
+
+        f = Between(Model.foo, Integer())
+        ...
+        Query().loads({'f': [0, 100]}
+
+    """
+
+    def _deserialize(self, value, attr, data):
+        l = super()._deserialize(value, attr, data)
+        return between(self.column, *l)
+
+
+class Equal(Field):
+    """
+    Generates an SQL equal ``==`` clause for a given column and value::
+
+        class MyArgs(Query):
+            f = Equal(MyModel.foo, Integer())
+        MyArgs().load({'f': 24}) -> SQL: ``MyModel.foo == 24``
+
+    """
+
+    def __init__(
+        self,
+        column: Column,
+        field: Field,
+        default=missing_,
+        attribute=None,
+        data_key=None,
+        error=None,
+        validate=None,
+        required=False,
+        allow_none=None,
+        load_only=False,
+        dump_only=False,
+        missing=missing_,
+        error_messages=None,
+        **metadata,
+    ):
+        super().__init__(
+            default,
+            attribute,
+            data_key,
+            error,
+            validate,
+            required,
+            allow_none,
+            load_only,
+            dump_only,
+            missing,
+            error_messages,
+            **metadata,
+        )
+        self.column = column
+        self.field = field
+
+    def _deserialize(self, value, attr, data):
+        v = super()._deserialize(value, attr, data)
+        return self.column == self.field.deserialize(v)
+
+
+class Or(List):
+    """
+    Generates an `OR` SQL statement. This is like a Marshmallow List field,
+    so you can specify the type of value of the OR and validations.
+
+    As an example, you can define with this a list of options::
+
+        f = Or(Equal(Model.foo, Str(validates=OneOf(['option1', 'option2'])))
+
+    Where the user can select one or more::
+
+        {'f': ['option1']}
+
+    And with ``Length`` you can enforce the user to only choose one option::
+
+        f = Or(..., validates=Length(equal=1))
+    """
+
+    def _deserialize(self, value, attr, data):
+        l = super()._deserialize(value, attr, data)
+        return or_(v for v in l)
+
+
+class ILike(Str):
+    """
+    Generates a insensitive `LIKE` statement for strings.
+    """
+
+    def __init__(
+        self,
+        column: Column,
+        default=missing_,
+        attribute=None,
+        data_key=None,
+        error=None,
+        validate=None,
+        required=False,
+        allow_none=None,
+        load_only=False,
+        dump_only=False,
+        missing=missing_,
+        error_messages=None,
+        **metadata,
+    ):
+        super().__init__(
+            default,
+            attribute,
+            data_key,
+            error,
+            validate,
+            required,
+            allow_none,
+            load_only,
+            dump_only,
+            missing,
+            error_messages,
+            **metadata,
+        )
+        self.column = column
+
+    def _deserialize(self, value, attr, data):
+        v = super()._deserialize(value, attr, data)
+        return self.column.ilike('{}%'.format(v))
+
+
+class QueryField(Field):
+    """A field whose first parameter is a function that when
+    executed by passing only the value returns a SQLAlchemy query
+    expression.
+    """
+
+    def __init__(
+        self,
+        query,
+        field: Field,
+        default=missing_,
+        attribute=None,
+        data_key=None,
+        error=None,
+        validate=None,
+        required=False,
+        allow_none=None,
+        load_only=False,
+        dump_only=False,
+        missing=missing_,
+        error_messages=None,
+        **metadata,
+    ):
+        super().__init__(
+            default,
+            attribute,
+            data_key,
+            error,
+            validate,
+            required,
+            allow_none,
+            load_only,
+            dump_only,
+            missing,
+            error_messages,
+            **metadata,
+        )
+        self.query = query
+        self.field = field
+
+    def _deserialize(self, value, attr, data):
+        v = super()._deserialize(value, attr, data)
+        return self.query(v)
+
+
+class Join(Nested):
+    # todo Joins are manual: they should be able to use ORM's join
+    def __init__(
+        self, join, nested, default=missing_, exclude=tuple(), only=None, **kwargs
+    ):
+        super().__init__(nested, default, exclude, only, **kwargs)
+        self.join = join
+
+    def _deserialize(self, value, attr, data):
+        v = list(super()._deserialize(value, attr, data))
+        v.append(self.join)
+        return v
+
+
+class Query(MarshmallowSchema):
+    """
+    A Marshmallow schema that outputs SQLAlchemy queries when ``loading``
+    dictionaries::
+
+        class MyQuery(Query):
+            foo = Like(Mymodel.foocolumn)
+
+        Mymodel.query.filter(*MyQuery().load({'foo': 'bar'})).all()
+        # Executes query SELECT ... WHERE foocolumn IS LIKE 'bar%'
+
+    When used with ``webargs`` library you can pass generate queries
+    directly from the browser: ``foo.com/foo/?filter={'foo': 'bar'}``.
+    """
+
+    def load(self, data, many=None, partial=None):
+        """
+        Flatten ``Nested`` ``Query`` and add the list of results to
+        a SQL ``AND``.
+        """
+        values = super().load(data, many, partial).values()
+        return flatten_mixed(values)
+
+    def dump(self, obj, many=None, update_fields=True):
+        raise NotImplementedError('Why would you want to dump a query?')
+
+
+class Sort(MarshmallowSchema):
+    """
+    A Marshmallow schema that outputs SQLAlchemy order clauses::
+
+        class MySort(Sort):
+            foo = SortField(MyModel.foocolumn)
+        MyModel.query.filter(...).order_by(*MyQuery().load({'foo': 0})).all()
+
+    When used with ``webargs`` library you can pass generate sorts
+    directly from the browser: ``foo.com/foo/?sort={'foo': 1, 'bar': 0}``.
+    """
+
+    ASCENDING = True
+    """Sort in ascending order."""
+    DESCENDING = False
+    """Sort in descending order."""
+
+    def load(self, data, many=None, partial=None):
+        values = super().load(data, many, partial).values()
+        return flatten_mixed(values)
+
+
+class SortField(Boolean):
+    """A field that outputs a SQLAlchemy order clause."""
+
+    def __init__(
+        self, column: Column, truthy=Boolean.truthy, falsy=Boolean.falsy, **kwargs
+    ):
+        super().__init__(truthy, falsy, **kwargs)
+        self.column = column
+
+    def _deserialize(self, value, attr, data):
+        v = super()._deserialize(value, attr, data)
+        return self.column.asc() if v else self.column.desc()
+
+
+class NestedQueryFlaskParser(FlaskParser):
+    """
+    Parses JSON-encoded URL parameters like
+    ``.../foo?param={"x": "y"}&param2=["x", "y"]``, and it still allows
+    normal non-JSON-encoded params ``../foo?param=23&param2={"a": "b"}``.
+
+    You can keep a value always a string, regardless if it is a valid
+    JSON, by overriding the following method and setting per-case
+    actions by checking `name` property.
+    """
+
+    def parse_querystring(self, req, name, field):
+        v = super().parse_querystring(req, name, field)
+        try:
+            return json.loads(v)
+        except (JSONDecodeError, TypeError):
+            return v
+
+
+class FullTextSearch(Str):
+    # todo this is dummy for now
+    pass

ereuse_devicehub/teal/request.py

@@ -0,0 +1,28 @@
+from flask import Request as _Request
+from flask import current_app as app
+
+from ereuse_devicehub.teal.resource import Schema
+
+
+class Request(_Request):
+    def get_json(
+        self,
+        force=False,
+        silent=False,
+        cache=True,
+        validate=True,
+        schema: Schema = None,
+    ) -> dict:
+        """
+        As :meth:`flask.Request.get_json` but parsing
+        the resulting json through passed-in ``schema`` (or by default
+        ``g.schema``).
+        """
+        json = super().get_json(force, silent, cache)
+        if validate:
+            json = (
+                schema.load(json)
+                if schema
+                else app.resources[self.blueprint].schema.load(json)
+            )
+        return json

ereuse_devicehub/teal/resource.py

@@ -0,0 +1,429 @@
+from enum import Enum
+from typing import Callable, Iterable, Iterator, Tuple, Type, Union
+
+import inflection
+from anytree import PreOrderIter
+from boltons.typeutils import classproperty, issubclass
+from ereuse_utils.naming import Naming
+from flask import Blueprint, current_app, g, request, url_for
+from flask.json import jsonify
+from flask.views import MethodView
+from marshmallow import Schema as MarshmallowSchema
+from marshmallow import SchemaOpts as MarshmallowSchemaOpts
+from marshmallow import ValidationError, post_dump, pre_load, validates_schema
+from werkzeug.exceptions import MethodNotAllowed
+from werkzeug.routing import UnicodeConverter
+
+from ereuse_devicehub.teal import db, query
+
+
+class SchemaOpts(MarshmallowSchemaOpts):
+    """
+    Subclass of Marshmallow's SchemaOpts that provides
+    options for Teal's schemas.
+    """
+
+    def __init__(self, meta, ordered=False):
+        super().__init__(meta, ordered)
+        self.PREFIX = meta.PREFIX
+
+
+class Schema(MarshmallowSchema):
+    """
+    The definition of the fields of a resource.
+    """
+
+    OPTIONS_CLASS = SchemaOpts
+
+    class Meta:
+        PREFIX = None
+        """Optional. A prefix for the type; ex. devices:Computer."""
+
+    # noinspection PyMethodParameters
+    @classproperty
+    def t(cls: Type['Schema']) -> str:
+        """The type for this schema, auto-computed from its name."""
+        name, *_ = cls.__name__.split('Schema')
+        return Naming.new_type(name, cls.Meta.PREFIX)
+
+    # noinspection PyMethodParameters
+    @classproperty
+    def resource(cls: Type['Schema']) -> str:
+        """The resource name of this schema."""
+        return Naming.resource(cls.t)
+
+    @validates_schema(pass_original=True)
+    def check_unknown_fields(self, _, original_data: dict):
+        """
+        Raises a validationError when user sends extra fields.
+
+        From `Marshmallow docs<http://marshmallow.readthedocs.io/en/
+        latest/extending.html#validating-original-input-data>`_.
+        """
+        unknown_fields = set(original_data) - set(
+            f.data_key or n for n, f in self.fields.items()
+        )
+        if unknown_fields:
+            raise ValidationError('Unknown field', unknown_fields)
+
+    @validates_schema(pass_original=True)
+    def check_dump_only(self, _, orig_data: dict):
+        """
+        Raises a ValidationError if the user is submitting
+        'read-only' fields.
+        """
+        # Note that validates_schema does not execute when dumping
+        dump_only_fields = (
+            name for name, field in self.fields.items() if field.dump_only
+        )
+        non_writable = set(orig_data).intersection(dump_only_fields)
+        if non_writable:
+            raise ValidationError('Non-writable field', non_writable)
+
+    @pre_load
+    @post_dump
+    def remove_none_values(self, data: dict) -> dict:
+        """
+        Skip from dumping and loading values that are None.
+
+        A value that is None will be the same as a value that has not
+        been set.
+
+        `From here <https://github.com/marshmallow-code/marshmallow/
+        issues/229#issuecomment-134387999>`_.
+        """
+        # Will I always want this?
+        # maybe this could be a setting in the future?
+        return {key: value for key, value in data.items() if value is not None}
+
+    def dump(
+        self,
+        model: Union['db.Model', Iterable['db.Model']],
+        many=None,
+        update_fields=True,
+        nested=None,
+        polymorphic_on='t',
+    ):
+        """
+        Like marshmallow's dump but with nested resource support and
+        it only works for Models.
+
+        This can load model relationships up to ``nested`` level. For
+        example, if ``nested`` is ``1`` and we pass in a model of
+        ``User`` that has a relationship with a table of ``Post``, it
+        will load ``User`` and ``User.posts`` with all posts objects
+        populated, but it won't load relationships inside the
+        ``Post`` object. If, at the same time the ``Post`` has
+        an ``author`` relationship with ``author_id`` being the FK,
+        ``user.posts[n].author`` will be the value of ``author_id``.
+
+        Define nested fields with the
+        :class:`ereuse_devicehub.teal.marshmallow.NestedOn`
+
+        This method requires an active application context as it needs
+        to store some stuff in ``g``.
+
+        :param nested: How many layers of nested relationships to load?
+                       By default only loads 1 nested relationship.
+        """
+        from ereuse_devicehub.teal.marshmallow import NestedOn
+
+        if nested is not None:
+            setattr(g, NestedOn.NESTED_LEVEL, 0)
+            setattr(g, NestedOn.NESTED_LEVEL_MAX, nested)
+        if many:
+            # todo this breaks with normal dicts. Maybe this should go
+            # in NestedOn in the same way it happens when loading
+            if isinstance(model, dict):
+                return super().dump(model, update_fields=update_fields)
+            else:
+                return [
+                    self._polymorphic_dump(o, update_fields, polymorphic_on)
+                    for o in model
+                ]
+
+        else:
+            if isinstance(model, dict):
+                return super().dump(model, update_fields=update_fields)
+            else:
+                return self._polymorphic_dump(model, update_fields, polymorphic_on)
+
+    def _polymorphic_dump(self, obj: 'db.Model', update_fields, polymorphic_on='t'):
+        schema = current_app.resources[getattr(obj, polymorphic_on)].schema
+        if schema.t != self.t:
+            return super(schema.__class__, schema).dump(obj, False, update_fields)
+        else:
+            return super().dump(obj, False, update_fields)
+
+    def jsonify(
+        self,
+        model: Union['db.Model', Iterable['db.Model']],
+        nested=1,
+        many=False,
+        update_fields: bool = True,
+        polymorphic_on='t',
+        **kw,
+    ) -> str:
+        """
+        Like flask's jsonify but with model / marshmallow schema
+        support.
+
+        :param nested: How many layers of nested relationships to load?
+                       By default only loads 1 nested relationship.
+        """
+        return jsonify(self.dump(model, many, update_fields, nested, polymorphic_on))
+
+
+class View(MethodView):
+    """
+    A REST interface for resources.
+    """
+
+    QUERY_PARSER = query.NestedQueryFlaskParser()
+
+    class FindArgs(MarshmallowSchema):
+        """
+        Allowed arguments for the ``find``
+        method (GET collection) endpoint
+        """
+
+    def __init__(self, definition: 'Resource', **kw) -> None:
+        self.resource_def = definition
+        """The ResourceDefinition tied to this view."""
+        self.schema = None  # type: Schema
+        """The schema tied to this view."""
+        self.find_args = self.FindArgs()
+        super().__init__()
+
+    def dispatch_request(self, *args, **kwargs):
+        # This is unique for each view call
+        self.schema = g.schema
+        """
+        The default schema in this resource. 
+        Added as an attr for commodity; you can always use g.schema.
+        """
+        return super().dispatch_request(*args, **kwargs)
+
+    def get(self, id):
+        """Get a collection of resources or a specific one.
+        ---
+        parameters:
+        - name: id
+          in: path
+          description: The identifier of the resource.
+          type: string
+          required: false
+        responses:
+          200:
+            description: Return the collection or the specific one.
+        """
+        if id:
+            response = self.one(id)
+        else:
+            args = self.QUERY_PARSER.parse(
+                self.find_args, request, locations=('querystring',)
+            )
+            response = self.find(args)
+        return response
+
+    def one(self, id):
+        """GET one specific resource (ex. /cars/1)."""
+        raise MethodNotAllowed()
+
+    def find(self, args: dict):
+        """GET a list of resources (ex. /cars)."""
+        raise MethodNotAllowed()
+
+    def post(self):
+        raise MethodNotAllowed()
+
+    def delete(self, id):
+        raise MethodNotAllowed()
+
+    def put(self, id):
+        raise MethodNotAllowed()
+
+    def patch(self, id):
+        raise MethodNotAllowed()
+
+
+class Converters(Enum):
+    """An enumeration of available URL converters."""
+
+    string = 'string'
+    int = 'int'
+    float = 'float'
+    path = 'path'
+    any = 'any'
+    uuid = 'uuid'
+    lower = 'lower'
+
+
+class LowerStrConverter(UnicodeConverter):
+    """Like StringConverter but lowering the string."""
+
+    def to_python(self, value):
+        return super().to_python(value).lower()
+
+
+class Resource(Blueprint):
+    """
+    Main resource class. Defines the schema, views,
+    authentication, database and collection of a resource.
+
+    A ``ResourceDefinition`` is a Flask
+    :class:`flask.blueprints.Blueprint` that provides everything
+    needed to set a REST endpoint.
+    """
+
+    VIEW = None  # type: Type[View]
+    """
+    Resource view linked to this definition or None.
+    If none, this resource does not generate any view.
+    """
+    SCHEMA = Schema  # type: Type[Schema]
+    """The Schema that validates a submitting resource at the entry point."""
+    AUTH = False
+    """
+    If true, authentication is required for all the endpoints of this 
+    resource defined in ``VIEW``.
+    """
+    ID_NAME = 'id'
+    """
+    The variable name for GET *one* operations that is used as an id.
+    """
+    ID_CONVERTER = Converters.string
+    """
+    The converter for the id.
+
+    Note that converters do **cast** the value, so the converter 
+    ``uuid`` will return an ``UUID`` object.
+    """
+    __type__ = None  # type: str
+    """
+    The type of resource. 
+    If none, it is used the type of the Schema (``Schema.type``)
+    """
+
+    def __init__(
+        self,
+        app,
+        import_name=__name__,
+        static_folder=None,
+        static_url_path=None,
+        template_folder=None,
+        url_prefix=None,
+        subdomain=None,
+        url_defaults=None,
+        root_path=None,
+        cli_commands: Iterable[Tuple[Callable, str or None]] = tuple(),
+    ):
+        assert not self.VIEW or issubclass(
+            self.VIEW, View
+        ), 'VIEW should be a subclass of View'
+        assert not self.SCHEMA or issubclass(
+            self.SCHEMA, Schema
+        ), 'SCHEMA should be a subclass of Schema or None.'
+        # todo test for cases where self.SCHEMA is None
+        url_prefix = (
+            url_prefix if url_prefix is not None else '/{}'.format(self.resource)
+        )
+        super().__init__(
+            self.type,
+            import_name,
+            static_folder,
+            static_url_path,
+            template_folder,
+            url_prefix,
+            subdomain,
+            url_defaults,
+            root_path,
+        )
+        # todo __name__ in import_name forces subclasses to override the constructor
+        #   otherwise import_name equals to teal.resource not project1.myresource
+        #   and it is not very elegant...
+
+        self.app = app
+        self.schema = self.SCHEMA() if self.SCHEMA else None
+        # Views
+        if self.VIEW:
+            view = self.VIEW.as_view('main', definition=self, auth=app.auth)
+            if self.AUTH:
+                view = app.auth.requires_auth(view)
+            self.add_url_rule(
+                '/', defaults={'id': None}, view_func=view, methods={'GET'}
+            )
+            self.add_url_rule('/', view_func=view, methods={'POST'})
+            self.add_url_rule(
+                '/<{}:{}>'.format(self.ID_CONVERTER.value, self.ID_NAME),
+                view_func=view,
+                methods={'GET', 'PUT', 'DELETE', 'PATCH'},
+            )
+        self.cli_commands = cli_commands
+        self.before_request(self.load_resource)
+
+    @classproperty
+    def type(cls):
+        t = cls.__type__ or cls.SCHEMA.t
+        assert t, 'Resource needs a type: either from SCHEMA or manually from __type__.'
+        return t
+
+    @classproperty
+    def t(cls):
+        return cls.type
+
+    @classproperty
+    def resource(cls):
+        return Naming.resource(cls.type)
+
+    @classproperty
+    def cli_name(cls):
+        """The name used to generate the CLI Click group for this
+        resource."""
+        return inflection.singularize(cls.resource)
+
+    def load_resource(self):
+        """
+        Loads a schema and resource_def into the current request so it
+        can be used easily by functions outside view.
+        """
+        g.schema = self.schema
+        g.resource_def = self
+
+    def init_db(self, db: 'db.SQLAlchemy', exclude_schema=None):
+        """
+        Put here code to execute when initializing the database for this
+        resource.
+
+        We guarantee this to be executed in an app_context.
+
+        No need to commit.
+        """
+        pass
+
+    @property
+    def subresources_types(self) -> Iterator[str]:
+        """Gets the types of the subresources."""
+        return (node.name for node in PreOrderIter(self.app.tree[self.t]))
+
+
+TYPE = Union[
+    Resource, Schema, 'db.Model', str, Type[Resource], Type[Schema], Type['db.Model']
+]
+
+
+def url_for_resource(resource: TYPE, item_id=None, method='GET') -> str:
+    """
+    As Flask's ``url_for``, this generates an URL but specifically for
+    a View endpoint of the given resource.
+    :param method: The method whose view URL should be generated.
+    :param resource:
+    :param item_id: If given, append the ID of the resource in the URL,
+                    ex. GET /devices/1
+    :return: An URL.
+    """
+    type = getattr(resource, 't', resource)
+    values = {}
+    if item_id:
+        values[current_app.resources[type].ID_NAME] = item_id
+    return url_for('{}.main'.format(type), _method=method, **values)

ereuse_devicehub/teal/teal.py

@@ -0,0 +1,308 @@
+import inspect
+from typing import Dict, Type
+
+import click_spinner
+import ereuse_utils
+import flask_cors
+from anytree import Node
+from apispec import APISpec
+from click import option
+from ereuse_utils import ensure_utf8
+from flask import Flask, jsonify
+from flask.globals import _app_ctx_stack
+from flask_sqlalchemy import SQLAlchemy
+from marshmallow import ValidationError
+from werkzeug.exceptions import HTTPException, UnprocessableEntity
+
+from ereuse_devicehub.teal.auth import Auth
+from ereuse_devicehub.teal.cli import TealCliRunner
+from ereuse_devicehub.teal.client import Client
+from ereuse_devicehub.teal.config import Config as ConfigClass
+from ereuse_devicehub.teal.db import SchemaSQLAlchemy
+from ereuse_devicehub.teal.json_util import TealJSONEncoder
+from ereuse_devicehub.teal.request import Request
+from ereuse_devicehub.teal.resource import Converters, LowerStrConverter, Resource
+
+
+class Teal(Flask):
+    """
+    An opinionated REST and JSON first server built on Flask using
+    MongoDB and Marshmallow.
+    """
+
+    test_client_class = Client
+    request_class = Request
+    json_encoder = TealJSONEncoder
+    cli_context_settings = {'help_option_names': ('-h', '--help')}
+    test_cli_runner_class = TealCliRunner
+
+    def __init__(
+        self,
+        config: ConfigClass,
+        db: SQLAlchemy,
+        schema: str = None,
+        import_name=__name__.split('.')[0],
+        static_url_path=None,
+        static_folder='static',
+        static_host=None,
+        host_matching=False,
+        subdomain_matching=False,
+        template_folder='templates',
+        instance_path=None,
+        instance_relative_config=False,
+        root_path=None,
+        use_init_db=True,
+        Auth: Type[Auth] = Auth,
+    ):
+        """
+
+        :param config:
+        :param db:
+        :param schema: A string describing the main PostgreSQL's schema.
+                      ``None`` disables this functionality.
+                      If you use a factory of apps (for example by using
+                      :func:`teal.teal.prefixed_database_factory`) and then set this
+                      value differently per each app (as each app has a separate config)
+                      you effectively create a `multi-tenant app <https://
+                      news.ycombinator.com/item?id=4268792>`_.
+                      Your models by default will be created in this ``SCHEMA``,
+                      unless you set something like::
+
+                          class User(db.Model):
+                              __table_args__ = {'schema': 'users'}
+
+                      In which case this will be created in the ``users`` schema.
+                      Schemas are interesting over having multiple databases (i.e. using
+                      flask-sqlalchemy's data binding) because you can have relationships
+                      between them.
+
+                      Note that this only works with PostgreSQL.
+        :param import_name:
+        :param static_url_path:
+        :param static_folder:
+        :param static_host:
+        :param host_matching:
+        :param subdomain_matching:
+        :param template_folder:
+        :param instance_path:
+        :param instance_relative_config:
+        :param root_path:
+        :param Auth:
+        """
+        self.schema = schema
+        ensure_utf8(self.__class__.__name__)
+        super().__init__(
+            import_name,
+            static_url_path,
+            static_folder,
+            static_host,
+            host_matching,
+            subdomain_matching,
+            template_folder,
+            instance_path,
+            instance_relative_config,
+            root_path,
+        )
+        self.config.from_object(config)
+        flask_cors.CORS(self)
+        # Load databases
+        self.auth = Auth()
+        self.url_map.converters[Converters.lower.name] = LowerStrConverter
+        self.load_resources()
+        self.register_error_handler(HTTPException, self._handle_standard_error)
+        self.register_error_handler(ValidationError, self._handle_validation_error)
+        self.db = db
+        db.init_app(self)
+        if use_init_db:
+            self.cli.command('init-db', context_settings=self.cli_context_settings)(
+                self.init_db
+            )
+        self.spec = None  # type: APISpec
+        self.apidocs()
+
+    # noinspection PyAttributeOutsideInit
+    def load_resources(self):
+        self.resources = {}  # type: Dict[str, Resource]
+        """
+        The resources definitions loaded on this App, referenced by their
+        type name.
+        """
+        self.tree = {}  # type: Dict[str, Node]
+        """
+        A tree representing the hierarchy of the instances of 
+        ResourceDefinitions. ResourceDefinitions use these nodes to
+        traverse their hierarchy.
+         
+        Do not use the normal python class hierarchy as it is global,
+        thus unreliable if you run different apps with different
+        schemas (for example, an extension that is only added on the
+        third app adds a new type of user).
+        """
+        for ResourceDef in self.config['RESOURCE_DEFINITIONS']:
+            resource_def = ResourceDef(self)  # type: Resource
+            self.register_blueprint(resource_def)
+
+            if resource_def.cli_commands:
+
+                @self.cli.group(
+                    resource_def.cli_name,
+                    context_settings=self.cli_context_settings,
+                    short_help='{} management.'.format(resource_def.type),
+                )
+                def dummy_group():
+                    pass
+
+            for (
+                cli_command,
+                *args,
+            ) in resource_def.cli_commands:  # Register CLI commands
+                # todo cli commands with multiple arguments end-up reversed
+                # when teal has been executed multiple times (ex. testing)
+                # see _param_memo func in click package
+                dummy_group.command(*args)(cli_command)
+
+            # todo should we use resource_def.name instead of type?
+            # are we going to have collisions? (2 resource_def -> 1 schema)
+            self.resources[resource_def.type] = resource_def
+            self.tree[resource_def.type] = Node(resource_def.type)
+        # Link tree nodes between them
+        for _type, node in self.tree.items():
+            resource_def = self.resources[_type]
+            _, Parent, *superclasses = inspect.getmro(resource_def.__class__)
+            if Parent is not Resource:
+                node.parent = self.tree[Parent.type]
+
+    @staticmethod
+    def _handle_standard_error(e: HTTPException):
+        """
+        Handles HTTPExceptions by transforming them to JSON.
+        """
+        try:
+            response = jsonify(e)
+            response.status_code = e.code
+        except (AttributeError, TypeError) as e:
+            code = getattr(e, 'code', 500)
+            response = jsonify(
+                {'message': str(e), 'code': code, 'type': e.__class__.__name__}
+            )
+            response.status_code = code
+        return response
+
+    @staticmethod
+    def _handle_validation_error(e: ValidationError):
+        data = {
+            'message': e.messages,
+            'code': UnprocessableEntity.code,
+            'type': e.__class__.__name__,
+        }
+        response = jsonify(data)
+        response.status_code = UnprocessableEntity.code
+        return response
+
+    @option(
+        '--erase/--no-erase',
+        default=False,
+        help='Delete all contents from the database (including common schemas)?',
+    )
+    @option(
+        '--exclude-schema',
+        default=None,
+        help='Schema to exclude creation (and deletion if --erase is set). '
+        'Required the SchemaSQLAlchemy.',
+    )
+    def init_db(self, erase: bool = False, exclude_schema=None):
+        """
+        Initializes a database from scratch,
+        creating tables and needed resources.
+
+        Note that this does not create the database per se.
+
+        If executing this directly, remember to use an app_context.
+
+        Resources can hook functions that will be called when this
+        method executes, by subclassing :meth:`teal.resource.
+        Resource.load_resource`.
+        """
+        assert _app_ctx_stack.top, 'Use an app context.'
+        print('Initializing database...'.ljust(30), end='')
+        with click_spinner.spinner():
+            if erase:
+                if exclude_schema:  # Using then a schema teal sqlalchemy
+                    assert isinstance(self.db, SchemaSQLAlchemy)
+                    self.db.drop_schema()
+                else:  # using regular flask sqlalchemy
+                    self.db.drop_all()
+            self._init_db(exclude_schema)
+            self._init_resources()
+            self.db.session.commit()
+        print('done.')
+
+    def _init_db(self, exclude_schema=None) -> bool:
+        """Where the database is initialized. You can override this.
+
+        :return: A flag stating if the database has been created (can
+        be False in case check is True and the schema already
+        exists).
+        """
+        if exclude_schema:  # Using then a schema teal sqlalchemy
+            assert isinstance(self.db, SchemaSQLAlchemy)
+            self.db.create_all(exclude_schema=exclude_schema)
+        else:  # using regular flask sqlalchemy
+            self.db.create_all()
+        return True
+
+    def _init_resources(self, **kw):
+        for resource in self.resources.values():
+            resource.init_db(self.db, **kw)
+
+    def apidocs(self):
+        """Apidocs configuration and generation."""
+        self.spec = APISpec(
+            plugins=(
+                'apispec.ext.flask',
+                'apispec.ext.marshmallow',
+            ),
+            **self.config.get_namespace('API_DOC_CONFIG_'),
+        )
+        for name, resource in self.resources.items():
+            if resource.SCHEMA:
+                self.spec.definition(
+                    name,
+                    schema=resource.SCHEMA,
+                    extra_fields=self.config.get_namespace('API_DOC_CLASS_'),
+                )
+        self.add_url_rule('/apidocs', view_func=self.apidocs_endpoint)
+
+    def apidocs_endpoint(self):
+        """An endpoint that prints a JSON OpenApi 2.0 specification."""
+        if not getattr(self, '_apidocs', None):
+            # We are forced to to this under a request context
+            for path, view_func in self.view_functions.items():
+                if path != 'static':
+                    self.spec.add_path(view=view_func)
+            self._apidocs = self.spec.to_dict()
+        return jsonify(self._apidocs)
+
+
+class DumpeableHTTPException(ereuse_utils.Dumpeable):
+    """Exceptions that inherit this class will be able to dump
+    to dicts and JSONs.
+    """
+
+    def dump(self):
+        # todo this is heavily ad-hoc and should be more generic
+        value = super().dump()
+        value['type'] = self.__class__.__name__
+        value['code'] = self.code
+        value.pop('exc', None)
+        value.pop('response', None)
+        if 'data' in value:
+            value['fields'] = value['data']['messages']
+            del value['data']
+        if 'message' not in value:
+            value['message'] = value.pop('description', str(self))
+        return value
+
+
+# Add dump capacity to Werkzeug's HTTPExceptions
+HTTPException.__bases__ = HTTPException.__bases__ + (DumpeableHTTPException,)

ereuse_devicehub/teal/utils.py

@@ -0,0 +1,33 @@
+import inspect
+from typing import Dict, Iterator, Tuple
+
+from sqlalchemy.dialects import postgresql
+
+from ereuse_devicehub.teal import resource
+
+
+def compiled(Model, query) -> Tuple[str, Dict[str, str]]:
+    """
+    Generates a SQL statement.
+
+    :return A tuple with 1. the SQL statement and 2. the params for it.
+    """
+    c = Model.query.filter(*query).statement.compile(dialect=postgresql.dialect())
+    return str(c), c.params
+
+
+def import_resource(module) -> Iterator['resource.Resource']:
+    """
+    Gets the resource classes from the passed-in module.
+
+    This method yields subclasses of :class:`teal.resource.Resource`
+    found in the given module.
+    """
+
+    for obj in vars(module).values():
+        if (
+            inspect.isclass(obj)
+            and issubclass(obj, resource.Resource)
+            and obj != resource.Resource
+        ):
+            yield obj

tests/test_action.py

@@ -14,7 +14,6 @@ from flask import current_app as app
 from flask import g
 from pytest import raises
 from sqlalchemy.util import OrderedSet
-from teal.enums import Currency
 
 from ereuse_devicehub.client import Client, UserClient
 from ereuse_devicehub.db import db
@@ -39,6 +38,7 @@ from ereuse_devicehub.resources.enums import (
 from ereuse_devicehub.resources.lot.models import Lot
 from ereuse_devicehub.resources.tradedocument.models import TradeDocument
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.enums import Currency
 from tests import conftest
 from tests.conftest import create_user, file, json_encode, yaml2json
 

tests/test_agent.py

@@ -3,25 +3,32 @@ from uuid import UUID
 import pytest
 from marshmallow import ValidationError
 from sqlalchemy_utils import PhoneNumber
-from teal.db import UniqueViolation, DBError
-from teal.enums import Country
 
 from ereuse_devicehub.config import DevicehubConfig
 from ereuse_devicehub.db import db
 from ereuse_devicehub.devicehub import Devicehub
 from ereuse_devicehub.resources.agent import OrganizationDef, models, schemas
-from ereuse_devicehub.resources.agent.models import Membership, Organization, Person, System
+from ereuse_devicehub.resources.agent.models import (
+    Membership,
+    Organization,
+    Person,
+    System,
+)
+from ereuse_devicehub.teal.db import DBError, UniqueViolation
+from ereuse_devicehub.teal.enums import Country
 from tests.conftest import app_context, create_user
 
 
 @pytest.mark.usefixtures(app_context.__name__)
 def test_agent():
     """Tests creating an person."""
-    person = Person(name='Timmy',
+    person = Person(
+        name='Timmy',
         tax_id='xyz',
         country=Country.ES,
         telephone=PhoneNumber('+34666666666'),
-                    email='foo@bar.com')
+        email='foo@bar.com',
+    )
     db.session.add(person)
     db.session.commit()
 
@@ -36,8 +43,7 @@ def test_agent():
 @pytest.mark.usefixtures(app_context.__name__)
 def test_system():
     """Tests creating a system."""
-    system = System(name='Workbench',
+    system = System(name='Workbench', email='hello@ereuse.org')
-                    email='hello@ereuse.org')
     db.session.add(system)
     db.session.commit()
 
@@ -49,10 +55,9 @@ def test_system():
 @pytest.mark.usefixtures(app_context.__name__)
 def test_organization():
     """Tests creating an organization."""
-    org = Organization(name='ACME',
+    org = Organization(
-                       tax_id='xyz',
+        name='ACME', tax_id='xyz', country=Country.ES, email='contact@acme.com'
-                       country=Country.ES,
+    )
-                       email='contact@acme.com')
     db.session.add(org)
     db.session.commit()
 

tests/test_db.py

@@ -2,7 +2,8 @@ import datetime
 from uuid import UUID
 
 import pytest
-from teal.db import UniqueViolation
+
+from ereuse_devicehub.teal.db import UniqueViolation
 
 
 @pytest.mark.mvp
@@ -12,9 +13,10 @@ def test_unique_violation():
             self.params = {
                 'uuid': UUID('f5efd26e-8754-46bc-87bf-fbccc39d60d9'),
                 'version': '11.0',
-                'software': 'Workbench', 'elapsed': datetime.timedelta(0, 4),
+                'software': 'Workbench',
+                'elapsed': datetime.timedelta(0, 4),
                 'expected_actions': None,
-                'id': UUID('dbdef3d8-2cac-48cb-adb8-419bc3e59687')
+                'id': UUID('dbdef3d8-2cac-48cb-adb8-419bc3e59687'),
             }
 
         def __str__(self):

tests/test_device.py

@@ -9,8 +9,6 @@ from ereuse_utils.test import ANY
 from flask import g
 from pytest import raises
 from sqlalchemy.util import OrderedSet
-from teal.db import ResourceNotFound
-from teal.enums import Layouts
 
 from ereuse_devicehub.client import Client, UserClient
 from ereuse_devicehub.db import db
@@ -34,6 +32,8 @@ from ereuse_devicehub.resources.enums import (
 )
 from ereuse_devicehub.resources.tag.model import Tag
 from ereuse_devicehub.resources.user import User
+from ereuse_devicehub.teal.db import ResourceNotFound
+from ereuse_devicehub.teal.enums import Layouts
 from tests import conftest
 from tests.conftest import file, json_encode, yaml2json
 

tests/test_device_find.py

@@ -1,40 +1,46 @@
-import pytest
 import uuid
-from teal.utils import compiled
+
+import pytest
 
 from ereuse_devicehub.client import UserClient
 from ereuse_devicehub.db import db
 from ereuse_devicehub.devicehub import Devicehub
 from ereuse_devicehub.resources.action.models import Snapshot
-from ereuse_devicehub.resources.device.models import Desktop, Device, GraphicCard, Laptop, Server, \
+from ereuse_devicehub.resources.device.models import (
-    SolidStateDrive
+    Desktop,
+    Device,
+    GraphicCard,
+    Laptop,
+    Server,
+    SolidStateDrive,
+)
 from ereuse_devicehub.resources.device.search import DeviceSearch
 from ereuse_devicehub.resources.device.views import Filters, Sorting
 from ereuse_devicehub.resources.enums import ComputerChassis
 from ereuse_devicehub.resources.lot.models import Lot
+from ereuse_devicehub.teal.utils import compiled
 from tests import conftest
-from tests.conftest import file, yaml2json, json_encode
+from tests.conftest import file, json_encode, yaml2json
 
 
 @pytest.mark.mvp
 @pytest.mark.usefixtures(conftest.app_context.__name__)
 def test_device_filters():
     schema = Filters()
-    q = schema.load({
+    q = schema.load(
+        {
             'type': ['Computer', 'Laptop'],
             'manufacturer': 'Dell',
-        'rating': {
+            'rating': {'rating': [3, 6], 'appearance': [2, 4]},
-            'rating': [3, 6],
+            'tag': {'id': ['bcn-', 'activa-02']},
-            'appearance': [2, 4]
-        },
-        'tag': {
-            'id': ['bcn-', 'activa-02']
         }
-    })
+    )
     s, params = compiled(Device, q)
     # Order between query clauses can change
-    assert '(device.type IN (%(type_1)s, %(type_2)s, %(type_3)s, %(type_4)s) ' \
+    assert (
+        '(device.type IN (%(type_1)s, %(type_2)s, %(type_3)s, %(type_4)s) '
         'OR device.type IN (%(type_5)s))' in s
+    )
     assert 'device.manufacturer ILIKE %(manufacturer_1)s' in s
     assert 'rate.rating BETWEEN %(rating_1)s AND %(rating_2)s' in s
     assert 'rate.appearance BETWEEN %(appearance_1)s AND %(appearance_2)s' in s
@@ -42,11 +48,33 @@ def test_device_filters():
 
     # type_x can be assigned at different values
     # ex: type_1 can be 'Desktop' in one execution but the next one 'Laptop'
-    assert set(params.keys()) == {'id_2', 'appearance_1', 'type_1', 'type_4', 'rating_2', 'type_5',
+    assert set(params.keys()) == {
-                                  'type_3', 'type_2', 'appearance_2', 'id_1', 'rating_1',
+        'id_2',
-                                  'manufacturer_1'}
+        'appearance_1',
-    assert set(params.values()) == {2.0, 'Laptop', 4.0, 3.0, 6.0, 'Desktop', 'activa-02%',
+        'type_1',
-                                    'Server', 'Dell%', 'Computer', 'bcn-%'}
+        'type_4',
+        'rating_2',
+        'type_5',
+        'type_3',
+        'type_2',
+        'appearance_2',
+        'id_1',
+        'rating_1',
+        'manufacturer_1',
+    }
+    assert set(params.values()) == {
+        2.0,
+        'Laptop',
+        4.0,
+        3.0,
+        6.0,
+        'Desktop',
+        'activa-02%',
+        'Server',
+        'Dell%',
+        'Computer',
+        'bcn-%',
+    }
 
 
 @pytest.mark.usefixtures(conftest.app_context.__name__)
@@ -70,22 +98,30 @@ def device_query_dummy(app: Devicehub):
     """
     with app.app_context():
         devices = (  # The order matters ;-)
-            Desktop(serial_number='1',
+            Desktop(
+                serial_number='1',
                 model='ml1',
                 manufacturer='mr1',
-                    chassis=ComputerChassis.Tower),
+                chassis=ComputerChassis.Tower,
-            Desktop(serial_number='2',
+            ),
+            Desktop(
+                serial_number='2',
                 model='ml2',
                 manufacturer='mr2',
-                    chassis=ComputerChassis.Microtower),
+                chassis=ComputerChassis.Microtower,
-            Laptop(serial_number='3',
+            ),
+            Laptop(
+                serial_number='3',
                 model='ml3',
                 manufacturer='mr3',
-                   chassis=ComputerChassis.Detachable),
+                chassis=ComputerChassis.Detachable,
-            Server(serial_number='4',
+            ),
+            Server(
+                serial_number='4',
                 model='ml4',
                 manufacturer='mr4',
-                   chassis=ComputerChassis.Tower),
+                chassis=ComputerChassis.Tower,
+            ),
         )
         devices[0].components.add(
             GraphicCard(serial_number='1-gc', model='s1ml', manufacturer='s1mr')
@@ -116,10 +152,13 @@ def test_device_query_filter_type(user: UserClient):
 
 @pytest.mark.usefixtures(device_query_dummy.__name__)
 def test_device_query_filter_sort(user: UserClient):
-    i, _ = user.get(res=Device, query=[
+    i, _ = user.get(
+        res=Device,
+        query=[
             ('sort', {'created': Sorting.DESCENDING}),
-        ('filter', {'type': ['Computer']})
+            ('filter', {'type': ['Computer']}),
-    ])
+        ],
+    )
     assert ('4', '3', '2', '1') == tuple(d['serialNumber'] for d in i['items'])
 
 
@@ -128,46 +167,49 @@ def test_device_query_filter_lots(user: UserClient):
     parent, _ = user.post({'name': 'Parent'}, res=Lot)
     child, _ = user.post({'name': 'Child'}, res=Lot)
 
-    i, _ = user.get(res=Device, query=[
+    i, _ = user.get(res=Device, query=[('filter', {'lot': {'id': [parent['id']]}})])
-        ('filter', {'lot': {'id': [parent['id']]}})
-    ])
     assert not i['items'], 'No devices in lot'
 
-    parent, _ = user.post({},
+    parent, _ = user.post(
+        {},
         res=Lot,
         item='{}/children'.format(parent['id']),
-                          query=[('id', child['id'])])
+        query=[('id', child['id'])],
-    i, _ = user.get(res=Device, query=[
+    )
-        ('filter', {'type': ['Computer']})
+    i, _ = user.get(res=Device, query=[('filter', {'type': ['Computer']})])
-    ])
     assert ('1', '2', '3', '4') == tuple(d['serialNumber'] for d in i['items'])
-    parent, _ = user.post({},
+    parent, _ = user.post(
+        {},
         res=Lot,
         item='{}/devices'.format(parent['id']),
-                          query=[('id', d['id']) for d in i['items'][:2]])
+        query=[('id', d['id']) for d in i['items'][:2]],
-    child, _ = user.post({},
+    )
+    child, _ = user.post(
+        {},
         res=Lot,
         item='{}/devices'.format(child['id']),
-                         query=[('id', d['id']) for d in i['items'][2:]])
+        query=[('id', d['id']) for d in i['items'][2:]],
-    i, _ = user.get(res=Device, query=[
+    )
-        ('filter', {'lot': {'id': [parent['id']]}})
+    i, _ = user.get(res=Device, query=[('filter', {'lot': {'id': [parent['id']]}})])
-    ])
     assert ('1', '2', '3', '4', '1-gc', '2-ssd', '4-ssd') == tuple(
         x['serialNumber'] for x in i['items']
-    ), 'The parent lot contains 2 items plus indirectly the other ' \
+    ), (
+        'The parent lot contains 2 items plus indirectly the other '
         '2 from the child lot, with all their 2 components'
+    )
 
-    i, _ = user.get(res=Device, query=[
+    i, _ = user.get(
+        res=Device,
+        query=[
             ('filter', {'type': ['Computer'], 'lot': {'id': [parent['id']]}}),
-    ])
+        ],
+    )
     assert ('1', '2', '3', '4') == tuple(x['serialNumber'] for x in i['items'])
-    s, _ = user.get(res=Device, query=[
+    s, _ = user.get(res=Device, query=[('filter', {'lot': {'id': [child['id']]}})])
-        ('filter', {'lot': {'id': [child['id']]}})
-    ])
     assert ('3', '4', '4-ssd') == tuple(x['serialNumber'] for x in s['items'])
-    s, _ = user.get(res=Device, query=[
+    s, _ = user.get(
-        ('filter', {'lot': {'id': [child['id'], parent['id']]}})
+        res=Device, query=[('filter', {'lot': {'id': [child['id'], parent['id']]}})]
-    ])
+    )
     assert ('1', '2', '3', '4', '1-gc', '2-ssd', '4-ssd') == tuple(
         x['serialNumber'] for x in s['items']
     ), 'Adding both lots is redundant in this case and we have the 4 elements.'

tests/test_snapshot.py

@@ -12,8 +12,6 @@ import pytest
 from boltons import urlutils
 from ereuse_utils.test import ANY
 from requests.exceptions import HTTPError
-from teal.db import DBError, UniqueViolation
-from teal.marshmallow import ValidationError
 
 from ereuse_devicehub.client import Client, UserClient
 from ereuse_devicehub.db import db
@@ -42,6 +40,8 @@ from ereuse_devicehub.resources.documents import documents
 from ereuse_devicehub.resources.enums import ComputerChassis, SnapshotSoftware
 from ereuse_devicehub.resources.tag import Tag
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import DBError, UniqueViolation
+from ereuse_devicehub.teal.marshmallow import ValidationError
 from tests import conftest
 from tests.conftest import file, file_json, json_encode, yaml2json
 

tests/test_tag.py

@@ -6,8 +6,6 @@ from boltons.urlutils import URL
 from ereuse_utils.session import DevicehubClient
 from flask import g
 from pytest import raises
-from teal.db import DBError, MultipleResourcesFound, ResourceNotFound, UniqueViolation
-from teal.marshmallow import ValidationError
 
 from ereuse_devicehub.client import Client, UserClient
 from ereuse_devicehub.db import db
@@ -23,6 +21,13 @@ from ereuse_devicehub.resources.tag.view import (
     TagNotLinked,
 )
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.db import (
+    DBError,
+    MultipleResourcesFound,
+    ResourceNotFound,
+    UniqueViolation,
+)
+from ereuse_devicehub.teal.marshmallow import ValidationError
 from tests import conftest
 from tests.conftest import json_encode, yaml2json
 

tests/test_user.py

@@ -2,8 +2,6 @@ from uuid import UUID
 
 import pytest
 from sqlalchemy_utils import Password
-from teal.enums import Country
-from teal.marshmallow import ValidationError
 from werkzeug.exceptions import NotFound
 
 from ereuse_devicehub import auth
@@ -13,6 +11,8 @@ from ereuse_devicehub.devicehub import Devicehub
 from ereuse_devicehub.resources.user import UserDef
 from ereuse_devicehub.resources.user.exceptions import WrongCredentials
 from ereuse_devicehub.resources.user.models import User
+from ereuse_devicehub.teal.enums import Country
+from ereuse_devicehub.teal.marshmallow import ValidationError
 from tests.conftest import app_context, create_user
 
 
@@ -24,12 +24,14 @@ def test_create_user_method_with_agent(app: Devicehub):
     This method checks that the token is correct, too.
     """
     user_def = app.resources['User']  # type: UserDef
-    u = user_def.create_user(email='foo@foo.com',
+    u = user_def.create_user(
+        email='foo@foo.com',
         password='foo',
         agent='Nice Person',
         country=Country.ES.name,
         telephone='+34 666 66 66 66',
-                             tax_id='1234')
+        tax_id='1234',
+    )
     user = User.query.filter_by(id=u['id']).one()  # type: User
     assert user.email == 'foo@foo.com'
     assert isinstance(user.token, UUID)
@@ -75,9 +77,9 @@ def test_login_success(client: Client, app: Devicehub):
     """
     with app.app_context():
         create_user()
-    user, _ = client.post({'email': 'foo@foo.com', 'password': 'foo'},
+    user, _ = client.post(
-                          uri='/users/login/',
+        {'email': 'foo@foo.com', 'password': 'foo'}, uri='/users/login/', status=200
-                          status=200)
+    )
     assert user['email'] == 'foo@foo.com'
     assert UUID(auth.Auth.decode(user['token']))
     assert 'password' not in user
@@ -126,16 +128,20 @@ def test_login_failure(client: Client, app: Devicehub):
     # Wrong password
     with app.app_context():
         create_user()
-    client.post({'email': 'foo@foo.com', 'password': 'wrong pass'},
+    client.post(
+        {'email': 'foo@foo.com', 'password': 'wrong pass'},
         uri='/users/login/',
-                status=WrongCredentials)
+        status=WrongCredentials,
+    )
     # Wrong URI
     client.post({}, uri='/wrong-uri', status=NotFound)
     # Malformed data
     client.post({}, uri='/users/login/', status=ValidationError)
-    client.post({'email': 'this is not an email', 'password': 'nope'},
+    client.post(
+        {'email': 'this is not an email', 'password': 'nope'},
         uri='/users/login/',
-                status=ValidationError)
+        status=ValidationError,
+    )
 
 
 @pytest.mark.xfail(reason='Test not developed')