import { t } from "@lingui/macro";
import {
    css,
    CSSResult,
    customElement,
    html,
    LitElement,
    property,
    TemplateResult,
} from "lit-element";
import { ifDefined } from "lit-html/directives/if-defined";
import { until } from "lit-html/directives/until";
import { Application, CoreApi } from "@goauthentik/api";
import { AKResponse } from "../api/Client";
import { DEFAULT_CONFIG } from "../api/Config";
import { me } from "../api/Users";
import { loading, truncate } from "../utils";
import "../elements/PageHeader";
import PFBase from "@patternfly/patternfly/patternfly-base.css";
import PFCard from "@patternfly/patternfly/components/Card/card.css";
import PFTitle from "@patternfly/patternfly/components/Title/title.css";
import PFEmptyState from "@patternfly/patternfly/components/EmptyState/empty-state.css";
import PFPage from "@patternfly/patternfly/components/Page/page.css";
import PFContent from "@patternfly/patternfly/components/Content/content.css";
import AKGlobal from "../authentik.css";
import PFAvatar from "@patternfly/patternfly/components/Avatar/avatar.css";
import PFGallery from "@patternfly/patternfly/layouts/Gallery/gallery.css";
import PFButton from "@patternfly/patternfly/components/Button/button.css";

@customElement("ak-library-app")
export class LibraryApplication extends LitElement {
    @property({ attribute: false })
    application?: Application;

    static get styles(): CSSResult[] {
        return [
            PFBase,
            PFCard,
            PFButton,
            PFAvatar,
            AKGlobal,
            css`
                .pf-c-card {
                    height: 100%;
                }
                i.pf-icon {
                    height: 36px;
                    display: flex;
                    flex-direction: column;
                    justify-content: center;
                }
                .pf-c-avatar {
                    --pf-c-avatar--BorderRadius: 0;
                }
                .pf-c-card__header {
                    min-height: 60px;
                    justify-content: space-between;
                }
                .pf-c-card__header a {
                    display: flex;
                    flex-direction: column;
                    justify-content: center;
                    margin-right: 0.25em;
                }
            `,
        ];
    }

    render(): TemplateResult {
        if (!this.application) {
            return html`<ak-spinner></ak-spinner>`;
        }
        return html` <div class="pf-c-card pf-m-hoverable pf-m-compact">
            <div class="pf-c-card__header">
                ${this.application.metaIcon
                    ? html`<a href="${ifDefined(this.application.launchUrl ?? "")}"
                          ><img
                              class="app-icon pf-c-avatar"
                              src="${ifDefined(this.application.metaIcon)}"
                              alt="Application Icon"
                      /></a>`
                    : html`<i class="fas fas fa-share-square"></i>`}
                ${until(
                    me().then((u) => {
                        if (!u.user.isSuperuser) return html``;
                        return html`
                            <a
                                class="pf-c-button pf-m-control pf-m-small"
                                href="#/core/applications/${this.application?.slug}"
                            >
                                <i class="fas fa-pencil-alt"></i>
                            </a>
                        `;
                    }),
                )}
            </div>
            <div class="pf-c-card__title">
                <p id="card-1-check-label">
                    <a href="${ifDefined(this.application.launchUrl ?? "")}"
                        >${this.application.name}</a
                    >
                </p>
                <div class="pf-c-content">
                    <small>${this.application.metaPublisher}</small>
                </div>
            </div>
            <div class="pf-c-card__body">${truncate(this.application.metaDescription, 35)}</div>
        </div>`;
    }
}

@customElement("ak-library")
export class LibraryPage extends LitElement {
    @property({ attribute: false })
    apps?: AKResponse<Application>;

    pageTitle(): string {
        return t`My Applications`;
    }

    static get styles(): CSSResult[] {
        return [PFBase, PFEmptyState, PFTitle, PFPage, PFContent, PFGallery, AKGlobal].concat(css`
            :host,
            main {
                height: 100%;
            }
        `);
    }

    firstUpdated(): void {
        new CoreApi(DEFAULT_CONFIG).coreApplicationsList({}).then((apps) => {
            this.apps = apps;
        });
    }

    renderEmptyState(): TemplateResult {
        return html` <div class="pf-c-empty-state pf-m-full-height">
            <div class="pf-c-empty-state__content">
                <i class="fas fa-cubes pf-c-empty-state__icon" aria-hidden="true"></i>
                <h1 class="pf-c-title pf-m-lg">${t`No Applications available.`}</h1>
                <div class="pf-c-empty-state__body">
                    ${t`Either no applications are defined, or you don't have access to any.`}
                </div>
            </div>
        </div>`;
    }

    renderApps(): TemplateResult {
        return html`<div class="pf-l-gallery pf-m-gutter">
            ${this.apps?.results.map(
                (app) => html`<ak-library-app .application=${app}></ak-library-app>`,
            )}
        </div>`;
    }

    render(): TemplateResult {
        return html`<main role="main" class="pf-c-page__main" tabindex="-1" id="main-content">
            <ak-page-header icon="pf-icon pf-icon-applications" header=${t`Applications`}>
            </ak-page-header>
            <section class="pf-c-page__main-section">
                ${loading(
                    this.apps,
                    html`${(this.apps?.results.length || 0) > 0
                        ? this.renderApps()
                        : this.renderEmptyState()}`,
                )}
            </section>
        </main>`;
    }
}