import { EVENT_WS_MESSAGE } from "#common/constants";
import { globalAK } from "#common/global";
import { UIConfig, UserDisplay, getConfigForUser } from "#common/ui/config";
import { me } from "#common/users";
import "#components/ak-nav-buttons";
import type { PageHeaderInit, SidebarToggleEventDetail } from "#components/ak-page-header";
import { AKElement } from "#elements/Base";
import { WithBrandConfig } from "#elements/mixins/branding";
import { isAdminRoute } from "#elements/router/utils";
import { themeImage } from "#elements/utils/images";
import "@patternfly/elements/pf-tooltip/pf-tooltip.js";

import { msg } from "@lit/localize";
import { CSSResult, TemplateResult, css, html, nothing } from "lit";
import { customElement, property, state } from "lit/decorators.js";

import PFAvatar from "@patternfly/patternfly/components/Avatar/avatar.css";
import PFButton from "@patternfly/patternfly/components/Button/button.css";
import PFContent from "@patternfly/patternfly/components/Content/content.css";
import PFDrawer from "@patternfly/patternfly/components/Drawer/drawer.css";
import PFDropdown from "@patternfly/patternfly/components/Dropdown/dropdown.css";
import PFNotificationBadge from "@patternfly/patternfly/components/NotificationBadge/notification-badge.css";
import PFPage from "@patternfly/patternfly/components/Page/page.css";
import PFBase from "@patternfly/patternfly/patternfly-base.css";

import { SessionUser } from "@goauthentik/api";

/**
 * A global navbar component at the top of the page.
 *
 * Internally, this component listens for the `ak-page-header` event, which is
 * dispatched by the `ak-page-header` component.
 */
@customElement("ak-page-navbar")
export class AKPageNavbar
    extends WithBrandConfig(AKElement)
    implements PageHeaderInit, SidebarToggleEventDetail
{
    //#region Static Properties

    private static elementRef: AKPageNavbar | null = null;

    static readonly setNavbarDetails = (detail: Partial<PageHeaderInit>): void => {
        const { elementRef } = AKPageNavbar;
        if (!elementRef) {
            console.debug(
                `ak-page-header: Could not find ak-page-navbar, skipping event dispatch.`,
            );
            return;
        }

        const { header, description, icon, iconImage } = detail;

        elementRef.header = header;
        elementRef.description = description;
        elementRef.icon = icon;
        elementRef.iconImage = iconImage || false;
        elementRef.hasIcon = !!icon;
    };

    static get styles(): CSSResult[] {
        return [
            PFBase,
            PFButton,
            PFPage,
            PFDrawer,

            PFNotificationBadge,
            PFContent,
            PFAvatar,
            PFDropdown,
            css`
                :host {
                    position: sticky;
                    top: 0;
                    z-index: var(--pf-global--ZIndex--lg);
                    --pf-c-page__header-tools--MarginRight: 0;
                    --ak-brand-logo-height: var(--pf-global--FontSize--4xl, 2.25rem);
                    --ak-brand-background-color: var(
                        --pf-c-page__sidebar--m-light--BackgroundColor
                    );
                    --host-navbar-height: var(--ak-c-page-header--height, 7.5rem);
                }

                :host([theme="dark"]) {
                    --ak-brand-background-color: var(--pf-c-page__sidebar--BackgroundColor);
                    --pf-c-page__sidebar--BackgroundColor: var(--ak-dark-background-light);
                    color: var(--ak-dark-foreground);
                }

                navbar {
                    border-bottom: var(--pf-global--BorderWidth--sm);
                    border-bottom-style: solid;
                    border-bottom-color: var(--pf-global--BorderColor--100);
                    background-color: var(--pf-c-page--BackgroundColor);

                    display: flex;
                    flex-direction: row;

                    display: grid;
                    column-gap: var(--pf-global--spacer--sm);
                    grid-template-columns: [brand] auto [toggle] auto [primary] 1fr [secondary] auto;
                    grid-template-rows: auto auto;
                    grid-template-areas:
                        "brand toggle primary secondary"
                        "brand toggle description secondary";

                    @media (min-width: 769px) {
                        height: var(--host-navbar-height);
                    }

                    @media (max-width: 768px) {
                        row-gap: var(--pf-global--spacer--xs);

                        align-items: center;
                        grid-template-areas:
                            "toggle primary secondary"
                            "toggle description description";
                        justify-content: space-between;
                        width: 100%;
                    }
                }

                .items {
                    display: block;

                    &.primary {
                        grid-column: primary;
                        grid-row: primary / description;

                        align-self: center;
                        padding-block: var(--pf-global--spacer--md);

                        @media (max-width: 768px) {
                            padding-block: var(--pf-global--spacer--sm);
                        }

                        &.block-sibling {
                            align-self: end;
                        }

                        @media (min-width: 426px) {
                            &.block-sibling {
                                padding-block-end: 0;
                                grid-row: primary;
                            }
                        }

                        .accent-icon {
                            height: 1.2em;
                            width: 1em;

                            @media (max-width: 768px) {
                                display: none;
                            }
                        }
                    }

                    &.page-description {
                        padding-top: 0.3em;
                        grid-area: description;
                        margin-block-end: var(--pf-global--spacer--md);

                        display: box;
                        display: -webkit-box;
                        line-clamp: 2;
                        -webkit-line-clamp: 2;
                        box-orient: vertical;
                        -webkit-box-orient: vertical;
                        overflow: hidden;

                        @media (max-width: 425px) {
                            display: none;
                        }

                        @media (min-width: 769px) {
                            text-wrap: balance;
                        }
                    }

                    &.secondary {
                        grid-area: secondary;
                        flex: 0 0 auto;
                        justify-self: end;
                        padding-block: var(--pf-global--spacer--sm);
                        padding-inline-end: var(--pf-global--spacer--sm);

                        @media (min-width: 769px) {
                            align-content: center;
                            padding-block: var(--pf-global--spacer--md);
                            padding-inline-end: var(--pf-global--spacer--xl);
                        }
                    }
                }

                .brand {
                    grid-area: brand;
                    background-color: var(--ak-brand-background-color);
                    height: 100%;
                    width: var(--pf-c-page__sidebar--Width);
                    align-items: center;
                    padding-inline: var(--pf-global--spacer--sm);

                    display: flex;
                    justify-content: center;

                    &.pf-m-collapsed {
                        display: none;
                    }

                    @media (max-width: 1199px) {
                        display: none;
                    }
                }

                .sidebar-trigger {
                    grid-area: toggle;
                    height: 100%;
                }

                .logo {
                    flex: 0 0 auto;
                    height: var(--ak-brand-logo-height);

                    & img {
                        height: 100%;
                    }
                }

                .sidebar-trigger,
                .notification-trigger {
                    font-size: 1.5rem;
                }

                .notification-trigger.has-notifications {
                    color: var(--pf-global--active-color--100);
                }

                .pf-c-content .page-title {
                    display: box;
                    display: -webkit-box;
                    line-clamp: 2;
                    -webkit-line-clamp: 2;
                    box-orient: vertical;
                    -webkit-box-orient: vertical;
                    overflow: hidden;
                }

                h1 {
                    display: flex;
                    flex-direction: row;
                    align-items: center !important;
                }
            `,
        ];
    }

    //#endregion

    //#region Properties

    @state()
    icon?: string;

    @state()
    iconImage = false;

    @state()
    header?: string;

    @state()
    description?: string;

    @state()
    hasIcon = true;

    @property({
        type: Boolean,
    })
    public open?: boolean;

    @state()
    protected session?: SessionUser;

    @state()
    protected uiConfig!: UIConfig;

    //#endregion

    //#region Private Methods

    #setTitle(header?: string) {
        let title = this.brandingTitle;

        if (isAdminRoute()) {
            title = `${msg("Admin")} - ${title}`;
        }
        // Prepend the header to the title
        if (header) {
            title = `${header} - ${title}`;
        }
        document.title = title;
    }

    #toggleSidebar() {
        this.open = !this.open;

        this.dispatchEvent(
            new CustomEvent<SidebarToggleEventDetail>("sidebar-toggle", {
                bubbles: true,
                composed: true,
                detail: { open: this.open },
            }),
        );
    }

    //#endregion

    //#region Lifecycle

    public connectedCallback(): void {
        super.connectedCallback();
        AKPageNavbar.elementRef = this;

        window.addEventListener(EVENT_WS_MESSAGE, () => {
            this.firstUpdated();
        });
    }

    public disconnectedCallback(): void {
        super.disconnectedCallback();
        AKPageNavbar.elementRef = null;
    }

    public async firstUpdated() {
        this.session = await me();
        this.uiConfig = getConfigForUser(this.session.user);
        this.uiConfig.navbar.userDisplay = UserDisplay.none;
    }

    willUpdate() {
        // Always update title, even if there's no header value set,
        // as in that case we still need to return to the generic title
        this.#setTitle(this.header);
    }

    //#endregion

    //#region Render

    renderIcon() {
        if (this.icon) {
            if (this.iconImage && !this.icon.startsWith("fa://")) {
                return html`<img class="accent-icon pf-icon" src="${this.icon}" alt="page icon" />`;
            }

            const icon = this.icon.replaceAll("fa://", "fa ");

            return html`<i class="accent-icon ${icon}"></i>`;
        }
        return nothing;
    }

    render(): TemplateResult {
        return html` <slot></slot>
            <navbar aria-label="Main" class="navbar">
                <aside class="brand ${this.open ? "" : "pf-m-collapsed"}">
                    <a href="#/">
                        <div class="logo">
                            <img
                                src=${themeImage(this.brandingLogo)}
                                alt="${msg("authentik Logo")}"
                                loading="lazy"
                            />
                        </div>
                    </a>
                </aside>
                <button
                    class="sidebar-trigger pf-c-button pf-m-plain"
                    @click=${this.#toggleSidebar}
                    aria-label=${msg("Toggle sidebar")}
                    aria-expanded=${this.open ? "true" : "false"}
                >
                    <i class="fas fa-bars"></i>
                </button>

                <section
                    class="items primary pf-c-content ${this.description ? "block-sibling" : ""}"
                >
                    <h1 class="page-title">
                        ${this.hasIcon
                            ? html`<slot name="icon">${this.renderIcon()}</slot>`
                            : nothing}
                        ${this.header}
                    </h1>
                </section>
                ${this.description
                    ? html`<section class="items page-description pf-c-content">
                          <p>${this.description}</p>
                      </section>`
                    : nothing}

                <section class="items secondary">
                    <div class="pf-c-page__header-tools-group">
                        <ak-nav-buttons .uiConfig=${this.uiConfig} .me=${this.session}>
                            <a
                                class="pf-c-button pf-m-secondary pf-m-small pf-u-display-none pf-u-display-block-on-md"
                                href="${globalAK().api.base}if/user/"
                                slot="extra"
                            >
                                ${msg("User interface")}
                            </a>
                        </ak-nav-buttons>
                    </div>
                </section>
            </navbar>`;
    }

    //#endregion
}

declare global {
    interface HTMLElementTagNameMap {
        "ak-page-navbar": AKPageNavbar;
    }
}