/**
 * EcoOS App - Main application component
 * Uses dees-simple-appdash as the dashboard shell
 */

import {
  html,
  DeesElement,
  customElement,
  state,
  css,
  type TemplateResult,
} from '@design.estate/dees-element';

import { DeesSimpleAppdash, type IView } from '@design.estate/dees-catalog';

import type { IStatus } from '../../ts_interfaces/status.js';
import type { IDisplayInfo } from '../../ts_interfaces/display.js';
import type { IUpdateInfo } from '../../ts_interfaces/updates.js';

import { EcoosOverview } from './ecoos-overview.js';
import { EcoosDevices } from './ecoos-devices.js';
import { EcoosDisplays } from './ecoos-displays.js';
import { EcoosUpdates } from './ecoos-updates.js';
import { EcoosLogs } from './ecoos-logs.js';

@customElement('ecoos-app')
export class EcoosApp extends DeesElement {
  @state()
  private accessor status: IStatus | null = null;

  @state()
  private accessor displays: IDisplayInfo[] = [];

  @state()
  private accessor updateInfo: IUpdateInfo | null = null;

  @state()
  private accessor initialVersion: string | null = null;

  private ws: WebSocket | null = null;
  private statusInterval: number | null = null;
  private displaysInterval: number | null = null;
  private updatesInterval: number | null = null;

  public static styles = [
    css`
      :host {
        display: block;
        width: 100vw;
        height: 100vh;
        background: #0a0a0a;
      }

      dees-simple-appdash {
        width: 100%;
        height: 100%;
      }
    `,
  ];

  private viewTabs: IView[] = [
    {
      name: 'Overview',
      iconName: 'lucide:layoutGrid',
      element: EcoosOverview,
    },
    {
      name: 'Devices',
      iconName: 'lucide:cpu',
      element: EcoosDevices,
    },
    {
      name: 'Displays',
      iconName: 'lucide:monitor',
      element: EcoosDisplays,
    },
    {
      name: 'Updates',
      iconName: 'lucide:download',
      element: EcoosUpdates,
    },
    {
      name: 'Logs',
      iconName: 'lucide:scrollText',
      element: EcoosLogs,
    },
  ];

  connectedCallback(): void {
    super.connectedCallback();
    this.startPolling();
    this.connectWebSocket();
  }

  disconnectedCallback(): void {
    super.disconnectedCallback();
    this.stopPolling();
    this.disconnectWebSocket();
  }

  render(): TemplateResult {
    return html`
      <dees-simple-appdash
        name="EcoOS Management"
        .viewTabs=${this.viewTabs}
        @view-select=${this.handleViewSelect}
      ></dees-simple-appdash>
    `;
  }

  updated(changedProperties: Map<string, unknown>): void {
    super.updated(changedProperties);

    // Pass data to view components when they're rendered
    this.updateViewData();
  }

  private updateViewData(): void {
    // Find and update the active view component
    const appdash = this.shadowRoot?.querySelector('dees-simple-appdash');
    if (!appdash) return;

    // Get the current view content
    const overview = appdash.shadowRoot?.querySelector('ecoos-overview') as EcoosOverview;
    const devices = appdash.shadowRoot?.querySelector('ecoos-devices') as EcoosDevices;
    const displays = appdash.shadowRoot?.querySelector('ecoos-displays') as EcoosDisplays;
    const updates = appdash.shadowRoot?.querySelector('ecoos-updates') as EcoosUpdates;
    const logs = appdash.shadowRoot?.querySelector('ecoos-logs') as EcoosLogs;

    if (overview && this.status) {
      overview.status = this.status;
    }

    if (devices && this.status?.systemInfo) {
      devices.systemInfo = this.status.systemInfo;
    }

    if (displays) {
      displays.displays = this.displays;
    }

    if (updates && this.updateInfo) {
      updates.updateInfo = this.updateInfo;
    }

    if (logs && this.status) {
      logs.daemonLogs = this.status.logs || [];
      logs.systemLogs = this.status.systemLogs || [];
    }
  }

  private handleViewSelect(event: CustomEvent): void {
    console.log('View selected:', event.detail.view.name);
    // Trigger a data update for the new view
    setTimeout(() => this.updateViewData(), 100);
  }

  private startPolling(): void {
    // Initial fetches
    this.fetchStatus();
    this.fetchDisplays();
    this.fetchUpdates();

    // Periodic polling
    this.statusInterval = window.setInterval(() => this.fetchStatus(), 3000);
    this.displaysInterval = window.setInterval(() => this.fetchDisplays(), 5000);
    this.updatesInterval = window.setInterval(() => this.fetchUpdates(), 60000);
  }

  private stopPolling(): void {
    if (this.statusInterval) {
      clearInterval(this.statusInterval);
      this.statusInterval = null;
    }
    if (this.displaysInterval) {
      clearInterval(this.displaysInterval);
      this.displaysInterval = null;
    }
    if (this.updatesInterval) {
      clearInterval(this.updatesInterval);
      this.updatesInterval = null;
    }
  }

  private connectWebSocket(): void {
    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
    const wsUrl = `${protocol}//${window.location.host}/ws`;

    this.ws = new WebSocket(wsUrl);

    this.ws.onmessage = (event) => {
      try {
        const data = JSON.parse(event.data) as IStatus;
        this.handleStatusUpdate(data);
      } catch (e) {
        console.error('WebSocket message parse error:', e);
      }
    };

    this.ws.onclose = () => {
      console.log('WebSocket disconnected, reconnecting in 3s...');
      setTimeout(() => this.connectWebSocket(), 3000);
    };

    this.ws.onerror = (error) => {
      console.error('WebSocket error:', error);
    };
  }

  private disconnectWebSocket(): void {
    if (this.ws) {
      this.ws.close();
      this.ws = null;
    }
  }

  private handleStatusUpdate(data: IStatus): void {
    // Check for version change and reload if needed
    if (data.version) {
      if (this.initialVersion === null) {
        this.initialVersion = data.version;
      } else if (data.version !== this.initialVersion) {
        console.log(`Version changed from ${this.initialVersion} to ${data.version}, reloading...`);
        window.location.reload();
        return;
      }
    }

    this.status = data;
    this.updateViewData();
  }

  private async fetchStatus(): Promise<void> {
    try {
      const response = await fetch('/api/status');
      const data = await response.json() as IStatus;
      this.handleStatusUpdate(data);
    } catch (error) {
      console.error('Failed to fetch status:', error);
    }
  }

  private async fetchDisplays(): Promise<void> {
    try {
      const response = await fetch('/api/displays');
      const data = await response.json();
      this.displays = data.displays || [];
      this.updateViewData();
    } catch (error) {
      console.error('Failed to fetch displays:', error);
    }
  }

  private async fetchUpdates(): Promise<void> {
    try {
      const response = await fetch('/api/updates');
      const data = await response.json() as IUpdateInfo;
      this.updateInfo = data;
      this.updateViewData();
    } catch (error) {
      console.error('Failed to fetch updates:', error);
    }
  }
}