import { css, CSSResult, customElement, html, LitElement, property, TemplateResult } from "lit-element";
import PFPage from "@patternfly/patternfly/components/Page/page.css";
import PFContent from "@patternfly/patternfly/components/Content/content.css";
import AKGlobal from "../authentik.css";
import PFBase from "@patternfly/patternfly/patternfly-base.css";
import PFButton from "@patternfly/patternfly/components/Button/button.css";
import { EVENT_NOTIFICATION_TOGGLE, EVENT_SIDEBAR_TOGGLE, TITLE_DEFAULT } from "../constants";
import { DEFAULT_CONFIG, tenant } from "../api/Config";
import { until } from "lit-html/directives/until";
import { EventsApi } from "../../api/dist";

@customElement("ak-page-header")
export class PageHeader extends LitElement {

    @property()
    icon?: string;

    @property({type: Boolean})
    iconImage = false

    @property()
    set header(value: string) {
        tenant().then(tenant => {
            if (value !== "") {
                document.title = `${value} - ${tenant.brandingTitle}`;
            } else {
                document.title = tenant.brandingTitle || TITLE_DEFAULT;
            }
        });
        this._header = value;
    }

    get header(): string {
        return this._header;
    }

    @property()
    description?: string;

    _header = "";

    static get styles(): CSSResult[] {
        return [PFBase, PFButton, PFPage, PFContent, AKGlobal, css`
            :host {
                display: flex;
                flex-direction: row;
                min-height: 114px;
            }
            .pf-c-button.pf-m-plain {
                background-color: var(--pf-c-page__main-section--m-light--BackgroundColor);
                border-radius: 0px;
            }
            .pf-c-page__main-section {
                flex-grow: 1;
                display: flex;
                flex-direction: column;
                justify-content: center;
            }
            img.pf-icon {
                max-height: 24px;
            }
            .sidebar-trigger,
            .notification-trigger {
                font-size: 24px;
            }
            .notification-trigger.has-notifications {
                color: #2B9AF3;
            }
        `];
    }

    renderIcon(): TemplateResult {
        if (this.icon) {
            if (this.iconImage) {
                return html`<img class="pf-icon" src="${this.icon}" />&nbsp;`;
            }
            return html`<i class=${this.icon}></i>&nbsp;`;
        }
        return html``;
    }

    render(): TemplateResult {
        return html`<button
            class="sidebar-trigger pf-c-button pf-m-plain"
            @click=${() => {
                this.dispatchEvent(
                    new CustomEvent(EVENT_SIDEBAR_TOGGLE, {
                        bubbles: true,
                        composed: true,
                    })
                );
            }}>
            <i class="fas fa-bars"></i>
        </button>
        <section class="pf-c-page__main-section pf-m-light">
            <div class="pf-c-content">
                <h1>
                    ${this.renderIcon()}
                    ${this.header}
                </h1>
                ${this.description ?
                    html`<p>${this.description}</p>` : html``}
            </div>
        </section>
        ${until(new EventsApi(DEFAULT_CONFIG).eventsNotificationsList({
            seen: false,
            ordering: "-created",
            pageSize: 1,
        }).then(r => {
            return html`
                <button
                    class="notification-trigger pf-c-button pf-m-plain ${r.pagination.count > 0 ? "has-notifications" : ""}"
                    @click=${() => {
                        this.dispatchEvent(
                            new CustomEvent(EVENT_NOTIFICATION_TOGGLE, {
                                bubbles: true,
                                composed: true,
                            })
                        );
                    }}>
                    <i class="fas fa-bell"></i>
                </button>`;
        }))}`;
    }

}