import { DeesElement, customElement, html, css, cssManager, state, type TemplateResult } from '../plugins.js';
import { deesCatalog } from '../plugins.js';
import type { IView } from '@design.estate/dees-catalog';
import { NotificationManager } from '../state/notification-manager.js';
import { appRouter, type TSubviewSlug, type TViewSlug } from '../router.js';
import { SipproxyViewOverview } from './sipproxy-view-overview.js';
import { SipproxyViewCalls } from './sipproxy-view-calls.js';
import { SipproxyViewPhone } from './sipproxy-view-phone.js';
import { SipproxyViewContacts } from './sipproxy-view-contacts.js';
import { SipproxyViewProviders } from './sipproxy-view-providers.js';
import { SipproxyViewLog } from './sipproxy-view-log.js';
import { SipproxyViewRoutes } from './sipproxy-view-routes.js';
import { SipproxyViewVoicemail } from './sipproxy-view-voicemail.js';
import { SipproxyViewIvr } from './sipproxy-view-ivr.js';

interface ITabbedView extends IView {
  slug?: string;
  subViews?: ITabbedView[];
}

const VIEW_TABS: ITabbedView[] = [
  {
    name: 'Overview',
    slug: 'overview',
    iconName: 'lucide:layoutDashboard',
    subViews: [
      { name: 'Stats', slug: 'stats', iconName: 'lucide:activity', element: SipproxyViewOverview },
    ],
  },
  {
    name: 'Telephony',
    slug: 'telephony',
    iconName: 'lucide:phoneCall',
    subViews: [
      { name: 'Calls', slug: 'calls', iconName: 'lucide:phone', element: SipproxyViewCalls },
      { name: 'Phone', slug: 'phone', iconName: 'lucide:headset', element: SipproxyViewPhone },
      { name: 'Routes', slug: 'routes', iconName: 'lucide:route', element: SipproxyViewRoutes },
      { name: 'Voicemail', slug: 'voicemail', iconName: 'lucide:voicemail', element: SipproxyViewVoicemail },
      { name: 'IVR', slug: 'ivr', iconName: 'lucide:ListTree', element: SipproxyViewIvr },
    ],
  },
  {
    name: 'Configuration',
    slug: 'configuration',
    iconName: 'lucide:settings',
    subViews: [
      { name: 'Contacts', slug: 'contacts', iconName: 'lucide:contactRound', element: SipproxyViewContacts },
      { name: 'Providers', slug: 'providers', iconName: 'lucide:server', element: SipproxyViewProviders },
    ],
  },
  {
    name: 'System',
    slug: 'system',
    iconName: 'lucide:serverCog',
    subViews: [
      { name: 'Log', slug: 'log', iconName: 'lucide:scrollText', element: SipproxyViewLog },
    ],
  },
];

@customElement('sipproxy-app')
export class SipproxyApp extends DeesElement {
  private notificationManager = new NotificationManager();
  private appdash: InstanceType<typeof deesCatalog.DeesSimpleAppDash> | null = null;
  private viewTabs = VIEW_TABS;

  public static styles = [
    cssManager.defaultStyles,
    css`
      :host { display: block; height: 100%; }
      dees-simple-appdash { height: 100%; }
    `,
  ];

  private suppressViewSelectEvent = false;

  private slugFor(view: ITabbedView): string {
    return view.slug ?? view.name.toLowerCase().replace(/\s+/g, '');
  }

  private findParent(view: ITabbedView): ITabbedView | undefined {
    return this.viewTabs.find((tab) => tab.subViews?.includes(view));
  }

  private findViewBySlug(viewSlug: string, subviewSlug: string): ITabbedView | undefined {
    const top = this.viewTabs.find((tab) => this.slugFor(tab) === viewSlug);
    if (!top) return undefined;
    return top.subViews?.find((subview) => this.slugFor(subview) === subviewSlug) ?? top;
  }

  private get currentViewTab(): ITabbedView {
    const currentRoute = appRouter.getCurrentRoute();
    return this.findViewBySlug(currentRoute.view, currentRoute.subview) ?? this.viewTabs[0].subViews![0];
  }

  async firstUpdated() {
    this.appdash = this.shadowRoot?.querySelector('dees-simple-appdash') as InstanceType<typeof deesCatalog.DeesSimpleAppDash>;
    if (this.appdash) {
      this.notificationManager.init(this.appdash);

      // Listen for user tab selections and sync grouped URLs.
      this.appdash.addEventListener('view-select', ((e: CustomEvent) => {
        if (this.suppressViewSelectEvent) return;
        const view = e.detail?.view as ITabbedView | undefined;
        if (!view) return;

        const parent = this.findParent(view);
        if (!parent) return;

        const parentSlug = this.slugFor(parent) as TViewSlug;
        const subviewSlug = this.slugFor(view) as TSubviewSlug;
        if (!appRouter.isCurrentRoute(parentSlug, subviewSlug)) {
          appRouter.navigateToView(parentSlug, subviewSlug, true);
        }
      }) as EventListener);

      // Wire up router -> appdash (for browser back/forward).
      appRouter.setNavigateHandler((view, subview) => {
        const tab = this.findViewBySlug(view, subview);
        if (tab && this.appdash) {
          this.suppressViewSelectEvent = true;
          this.appdash.loadView(tab);
          this.suppressViewSelectEvent = false;
        }
      });

      const initialTab = this.currentViewTab;
      if (initialTab) {
        this.suppressViewSelectEvent = true;
        this.appdash.loadView(initialTab);
        this.suppressViewSelectEvent = false;
      }
    }
  }

  public async disconnectedCallback() {
    await super.disconnectedCallback();
    this.notificationManager.destroy();
  }

  public render(): TemplateResult {
    return html`
      <dees-simple-appdash
        .name=${'SipRouter'}
        .viewTabs=${this.viewTabs}
        .selectedView=${this.currentViewTab}
      ></dees-simple-appdash>
    `;
  }
}
