import ipaddress
import copy
import pytest

from datetime import datetime, timedelta
from decimal import Decimal
from typing import Tuple, Type

from flask import current_app as app, g
from sqlalchemy.util import OrderedSet
from teal.enums import Currency, Subdivision

from ereuse_devicehub.db import db
from ereuse_devicehub.client import UserClient
from ereuse_devicehub.devicehub import Devicehub
from ereuse_devicehub.resources import enums
from ereuse_devicehub.resources.action import models
from ereuse_devicehub.resources.device import states
from ereuse_devicehub.resources.device.models import Desktop, Device, GraphicCard, HardDrive, \
    RamModule, SolidStateDrive
from ereuse_devicehub.resources.enums import ComputerChassis, Severity, TestDataStorageLength
from tests import conftest
from tests.conftest import create_user, file


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_author():
    """Checks the default created author.

    Note that the author can be accessed after inserting the row.
    """
    user = create_user()
    g.user = user
    e = models.ActionWithOneDevice(device=Device())
    db.session.add(e)
    assert e.author is None
    assert e.author_id is None
    db.session.commit()
    assert e.author == user


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_erase_basic():
    erasure = models.EraseBasic(
        device=HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar'),
        steps=[
            models.StepZero(**conftest.T),
            models.StepRandom(**conftest.T)
        ],
        **conftest.T
    )
    db.session.add(erasure)
    db.session.commit()
    db_erasure = models.EraseBasic.query.one()
    assert erasure == db_erasure
    assert next(iter(db_erasure.device.actions)) == erasure
    assert not erasure.standards, 'EraseBasic themselves do not have standards'


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_validate_device_data_storage():
    """Checks the validation for data-storage-only actions works."""
    # We can't set a GraphicCard
    with pytest.raises(TypeError,
                       message='EraseBasic.device must be a DataStorage '
                               'but you passed <GraphicCard None model=\'foo-bar\' S/N=\'foo\'>'):
        models.EraseBasic(
            device=GraphicCard(serial_number='foo', manufacturer='bar', model='foo-bar'),
            clean_with_zeros=True,
            **conftest.T
        )


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_erase_sectors_steps_erasure_standards_hmg_is5():
    erasure = models.EraseSectors(
        device=SolidStateDrive(serial_number='foo', manufacturer='bar', model='foo-bar'),
        steps=[
            models.StepZero(**conftest.T),
            models.StepRandom(**conftest.T),
            models.StepRandom(**conftest.T)
        ],
        **conftest.T
    )
    db.session.add(erasure)
    db.session.commit()
    db_erasure = models.EraseSectors.query.one()
    # Steps are in order
    assert db_erasure.steps[0].num == 0
    assert db_erasure.steps[1].num == 1
    assert db_erasure.steps[2].num == 2
    assert {enums.ErasureStandards.HMG_IS5} == erasure.standards


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_test_data_storage_working():
    """Tests TestDataStorage with the resulting properties in Device."""
    hdd = HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar')
    test = models.TestDataStorage(
        device=hdd,
        severity=Severity.Error,
        elapsed=timedelta(minutes=25),
        length=TestDataStorageLength.Short,
        status=':-(',
        lifetime=timedelta(days=120)
    )
    db.session.add(test)
    db.session.flush()
    assert hdd.working == [test]
    assert not hdd.problems
    # Add new test overriding the first test in the problems
    # / working condition
    test2 = models.TestDataStorage(
        device=hdd,
        severity=Severity.Warning,
        elapsed=timedelta(minutes=25),
        length=TestDataStorageLength.Short,
        status=':-(',
        lifetime=timedelta(days=120)
    )
    db.session.add(test2)
    db.session.flush()
    assert hdd.working == [test2]
    assert hdd.problems == []


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_install():
    hdd = HardDrive(serial_number='sn')
    install = models.Install(name='LinuxMint 18.04 es',
                             elapsed=timedelta(seconds=25),
                             device=hdd)
    db.session.add(install)
    db.session.commit()


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_update_components_action_one():
    computer = Desktop(serial_number='sn1',
                       model='ml1',
                       manufacturer='mr1',
                       chassis=ComputerChassis.Tower)
    hdd = HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar')
    computer.components.add(hdd)

    # Add action
    test = models.StressTest(elapsed=timedelta(minutes=1))
    computer.actions_one.add(test)
    assert test.device == computer
    assert next(iter(test.components)) == hdd, 'Action has to have new components'

    # Remove action
    computer.actions_one.clear()
    assert not test.device
    assert not test.components, 'Action has to loose the components'

    # If we add a component to a device AFTER assigning the action
    # to the device, the action doesn't get the new component
    computer.actions_one.add(test)
    ram = RamModule()
    computer.components.add(ram)
    assert len(test.components) == 1


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_update_components_action_multiple():
    computer = Desktop(serial_number='sn1',
                       model='ml1',
                       manufacturer='mr1',
                       chassis=ComputerChassis.Tower)
    hdd = HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar')
    computer.components.add(hdd)

    ready = models.Ready()
    assert not ready.devices
    assert not ready.components

    # Add
    computer.actions_multiple.add(ready)
    assert ready.devices == OrderedSet([computer])
    assert next(iter(ready.components)) == hdd

    # Remove
    computer.actions_multiple.remove(ready)
    assert not ready.devices
    assert not ready.components

    # init / replace collection
    ready.devices = OrderedSet([computer])
    assert ready.devices
    assert ready.components


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_update_parent():
    computer = Desktop(serial_number='sn1',
                       model='ml1',
                       manufacturer='mr1',
                       chassis=ComputerChassis.Tower)
    hdd = HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar')
    computer.components.add(hdd)

    # Add
    benchmark = models.BenchmarkDataStorage()
    benchmark.device = hdd
    assert benchmark.parent == computer
    assert not benchmark.components

    # Remove
    benchmark.device = None
    assert not benchmark.parent


@pytest.mark.mvp
@pytest.mark.parametrize('action_model_state',
                         (pytest.param(ams, id=ams[0].__class__.__name__)
                          for ams in [
                              (models.ToRepair, states.Physical.ToBeRepaired),
                              (models.Repair, states.Physical.Repaired),
                              (models.ToPrepare, states.Physical.Preparing),
                              (models.Ready, states.Physical.Ready),
                              (models.Prepare, states.Physical.Prepared)
                          ]))
def test_generic_action(action_model_state: Tuple[models.Action, states.Trading],
                        user: UserClient):
    """Tests POSTing all generic actions."""
    action_model, state = action_model_state
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    action = {'type': action_model.t, 'devices': [snapshot['device']['id']]}
    action, _ = user.post(action, res=models.Action)
    assert action['devices'][0]['id'] == snapshot['device']['id']
    device, _ = user.get(res=Device, item=snapshot['device']['id'])
    assert device['actions'][-1]['id'] == action['id']
    assert device['physical'] == state.name
    # Check if the update of device is changed
    assert snapshot['device']['updated'] != device['updated']


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_live(user: UserClient, app: Devicehub):
    """Tests inserting a Live into the database and GETting it."""
    acer = file('acer.happy.battery.snapshot')
    snapshot, _ = user.post(acer, res=models.Snapshot)
    device_id = snapshot['device']['id']
    db_device = Device.query.filter_by(id=1).one()
    post_request = {"transaction": "ccc", "name": "John", "endUsers": 1,
                    "devices": [device_id], "description": "aaa",
                    "startTime": "2020-11-01T02:00:00+00:00",
                    "endTime": "2020-12-01T02:00:00+00:00"
    }

    user.post(res=models.Allocate, data=post_request)
    acer['uuid'] = "490fb8c0-81a1-42e9-95e0-5e7db7038ec3"
    hdd = [c for c in acer['components'] if c['type'] == 'HardDrive'][0]
    hdd_action = [a for a in hdd['actions'] if a['type'] == 'TestDataStorage'][0]
    hdd_action['powerCycleCount'] += 1000
    snapshot, _ = user.post(acer, res=models.Snapshot)
    db_device = Device.query.filter_by(id=1).one()
    action_live = [a for a in db_device.actions if a.type == 'Live']
    assert len(action_live) == 1
    assert action_live[0].time == 6293
    assert action_live[0].serial_number == 'wd-wx11a80w7430'


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_allocate(user: UserClient):
    """ Tests allocate """
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    device_id = snapshot['device']['id']
    post_request = {"transaction": "ccc", 
                    "finalUserCode": "aabbcc",
                    "name": "John", 
                    "severity": "Info",
                    "endUsers": 1,
                    "devices": [device_id], 
                    "description": "aaa",
                    "startTime": "2020-11-01T02:00:00+00:00",
                    "endTime": "2020-12-01T02:00:00+00:00",
    }

    allocate, _ = user.post(res=models.Allocate, data=post_request)
    # Normal allocate
    device, _ = user.get(res=Device, item=device_id)
    assert device['allocated'] == True
    action = [a for a in device['actions'] if a['type'] == 'Allocate'][0]
    assert action['transaction'] == allocate['transaction']
    assert action['finalUserCode'] == allocate['finalUserCode']
    assert action['created'] == allocate['created']
    assert action['startTime'] == allocate['startTime']
    assert action['endUsers'] == allocate['endUsers']
    assert action['name'] == allocate['name']

    post_bad_request1 = copy.copy(post_request)
    post_bad_request1['endUsers'] = 2
    post_bad_request2 = copy.copy(post_request)
    post_bad_request2['startTime'] = "2020-11-01T02:00:00+00:01"
    post_bad_request3 = copy.copy(post_request)
    post_bad_request3['transaction'] = "aaa"
    res1, _ = user.post(res=models.Allocate, data=post_bad_request1, status=422)
    res2, _ = user.post(res=models.Allocate, data=post_bad_request2, status=422)
    res3, _ = user.post(res=models.Allocate, data=post_bad_request3, status=422)
    for r in (res1, res2, res3):
        assert r['code'] == 422
        assert r['type'] == 'ValidationError'


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_allocate_bad_dates(user: UserClient):
    """ Tests allocate """
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    device_id = snapshot['device']['id']
    delta = timedelta(days=30)
    future = datetime.now() + delta
    post_request = {"transaction": "ccc", 
                    "finalUserCode": "aabbcc",
                    "name": "John", 
                    "severity": "Info",
                    "end_users": 1,
                    "devices": [device_id], 
                    "description": "aaa",
                    "start_time": future,
    }

    res, _ = user.post(res=models.Allocate, data=post_request, status=422)
    assert res['code'] == 422
    assert res['type'] == 'ValidationError'


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_deallocate(user: UserClient):
    """ Tests deallocate """
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    device_id = snapshot['device']['id']
    post_deallocate = {"startTime": "2020-11-01T02:00:00+00:00",
                       "transaction": "ccc",
                       "devices": [device_id]
    }
    res, _ = user.post(res=models.Deallocate, data=post_deallocate, status=422)
    assert res['code'] == 422
    assert res['type'] == 'ValidationError'
    post_allocate = {"transaction": "ccc", "name": "John", "endUsers": 1,
                    "devices": [device_id], "description": "aaa",
                    "startTime": "2020-11-01T02:00:00+00:00",
                    "endTime": "2020-12-01T02:00:00+00:00"
    }

    user.post(res=models.Allocate, data=post_allocate)
    device, _ = user.get(res=Device, item=device_id)
    assert device['allocated'] == True
    deallocate, _ = user.post(res=models.Deallocate, data=post_deallocate)
    assert deallocate['startTime'] == post_deallocate['startTime']
    assert deallocate['devices'][0]['id'] == device_id
    assert deallocate['devices'][0]['allocated'] == False
    res, _ = user.post(res=models.Deallocate, data=post_deallocate, status=422)
    assert res['code'] == 422
    assert res['type'] == 'ValidationError'


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.app_context.__name__)
def test_deallocate_bad_dates(user: UserClient):
    """ Tests deallocate with bad date of start_time """
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    device_id = snapshot['device']['id']
    delta = timedelta(days=30)
    future = datetime.now() + delta
    post_deallocate = {"startTime": future,
                       "devices": [device_id]
    }
    post_allocate = {"devices": [device_id], "description": "aaa",
                     "startTime": "2020-11-01T02:00:00+00:00"
    }

    user.post(res=models.Allocate, data=post_allocate)
    res, _ = user.post(res=models.Deallocate, data=post_deallocate, status=422)
    assert res['code'] == 422
    assert res['type'] == 'ValidationError'


@pytest.mark.mvp
@pytest.mark.parametrize('action_model_state',
                         (pytest.param(ams, id=ams[0].__name__)
                          for ams in [
                              (models.MakeAvailable, states.Trading.Available),
                              (models.Sell, states.Trading.Sold),
                              (models.Donate, states.Trading.Donated),
                              (models.Rent, states.Trading.Renting),
                              (models.DisposeProduct, states.Trading.ProductDisposed)
                          ]))
def test_trade(action_model_state: Tuple[Type[models.Action], states.Trading], user: UserClient):
    """Tests POSTing all Trade actions."""
    # todo missing None states.Trading for after cancelling renting, for example
    action_model, state = action_model_state
    snapshot, _ = user.post(file('basic.snapshot'), res=models.Snapshot)
    action = {
        'type': action_model.t,
        'devices': [snapshot['device']['id']]
    }
    if issubclass(action_model, models.Trade):
        action['to'] = user.user['individuals'][0]['id']
        action['shippingDate'] = '2018-06-29T12:28:54'
        action['invoiceNumber'] = 'ABC'
    action, _ = user.post(action, res=models.Action)
    assert action['devices'][0]['id'] == snapshot['device']['id']
    device, _ = user.get(res=Device, item=snapshot['device']['id'])
    assert device['actions'][-1]['id'] == action['id']
    assert device['trading'] == state.name


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_price_custom():
    computer = Desktop(serial_number='sn1', model='ml1', manufacturer='mr1',
                       chassis=ComputerChassis.Docking)
    price = models.Price(price=Decimal(25.25), currency=Currency.EUR)
    price.device = computer
    assert computer.price == price
    db.session.add(computer)
    db.session.commit()

    client = UserClient(app, 'foo@foo.com', 'foo', response_wrapper=app.response_class)
    client.login()
    p, _ = client.get(res=models.Action, item=str(price.id))
    assert p['device']['id'] == price.device.id == computer.id
    assert p['price'] == 25.25
    assert p['currency'] == Currency.EUR.name == 'EUR'

    c, _ = client.get(res=Device, item=computer.id)
    assert c['price']['id'] == p['id']


@pytest.mark.mvp
def test_price_custom_client(user: UserClient):
    """As test_price_custom but creating the price through the API."""
    s = file('basic.snapshot')
    snapshot, _ = user.post(s, res=models.Snapshot)
    price, _ = user.post({
        'type': 'Price',
        'price': 25,
        'currency': Currency.EUR.name,
        'device': snapshot['device']['id']
    }, res=models.Action)
    assert 25 == price['price']
    assert Currency.EUR.name == price['currency']

    device, _ = user.get(res=Device, item=price['device']['id'])
    assert 25 == device['price']['price']


@pytest.mark.mvp
@pytest.mark.usefixtures(conftest.auth_app_context.__name__)
def test_erase_physical():
    erasure = models.ErasePhysical(
        device=HardDrive(serial_number='foo', manufacturer='bar', model='foo-bar'),
        method=enums.PhysicalErasureMethod.Disintegration
    )
    db.session.add(erasure)
    db.session.commit()