/**
 * Calendar Controller
 *
 * Integrates the calendar package into PlanTempus.
 * Uses NovaDI for dependency injection and IndexedDB for offline storage.
 */

import { Container } from '@novadi/core';
import {
  registerCoreServices,
  CalendarApp,
  IndexedDBContext,
  SettingsService,
  ViewConfigService,
  EventBus,
  CalendarEvents
} from 'calendar';
import { registerSchedules } from 'calendar/schedules';

export class CalendarController {
  private app: Container | null = null;
  private calendarApp: CalendarApp | null = null;

  constructor() {
    const containerEl = document.querySelector('swp-calendar-container');
    if (!containerEl) return;
    this.init(containerEl as HTMLElement).catch(err => {
      console.error('[CalendarController] Init failed:', err);
    });
  }

  private async init(containerEl: HTMLElement): Promise<void> {
    console.log('[CalendarController] Starting init...');

    // Create DI container using the pattern from README
    const container = new Container();
    const builder = container.builder();
    registerCoreServices(builder, {
      dbConfig: { dbName: 'PlanTempusCalendarDB', dbVersion: 1 }
    });
    registerSchedules(builder);
    this.app = builder.build();
    console.log('[CalendarController] Container built');

    // Initialize IndexedDB
    const dbContext = this.app.resolveType<IndexedDBContext>();
    await dbContext.initialize();
    console.log('[CalendarController] IndexedDB initialized');

    // Seed required settings
    await this.seedSettings();
    console.log('[CalendarController] Settings seeded');

    // Initialize CalendarApp
    this.calendarApp = this.app.resolveType<CalendarApp>();
    await this.calendarApp.init(containerEl);
    console.log('[CalendarController] CalendarApp initialized');

    // Render default view
    const eventBus = this.app.resolveType<EventBus>();
    eventBus.emit(CalendarEvents.CMD_RENDER, { viewId: 'simple' });
    console.log('[CalendarController] Render command emitted');
  }

  private async seedSettings(): Promise<void> {
    if (!this.app) return;

    const settingsService = this.app.resolveType<SettingsService>();
    const viewConfigService = this.app.resolveType<ViewConfigService>();

    // Grid settings
    await settingsService.save({
      id: 'grid',
      dayStartHour: 8,
      dayEndHour: 18,
      workStartHour: 9,
      workEndHour: 17,
      hourHeight: 64,
      snapInterval: 15,
      syncStatus: 'synced'
    });

    // Workweek settings
    await settingsService.save({
      id: 'workweek',
      presets: {
        standard: { id: 'standard', label: 'Standard', workDays: [1, 2, 3, 4, 5], periodDays: 7 }
      },
      defaultPreset: 'standard',
      firstDayOfWeek: 1,
      syncStatus: 'synced'
    });

    // View configuration
    await viewConfigService.save({
      id: 'simple',
      groupings: [{ type: 'date', values: [], idProperty: 'date', derivedFrom: 'start' }],
      syncStatus: 'synced'
    });
  }

  navigatePrev(): void {
    if (!this.app) return;
    const eventBus = this.app.resolveType<EventBus>();
    eventBus.emit(CalendarEvents.CMD_NAVIGATE_PREV);
  }

  navigateNext(): void {
    if (!this.app) return;
    const eventBus = this.app.resolveType<EventBus>();
    eventBus.emit(CalendarEvents.CMD_NAVIGATE_NEXT);
  }

  toggleDrawer(): void {
    if (!this.app) return;
    const eventBus = this.app.resolveType<EventBus>();
    eventBus.emit(CalendarEvents.CMD_DRAWER_TOGGLE);
  }
}