// Main entry point for Calendar Plantempus
import { eventBus } from './core/EventBus.js';
import { CalendarManager } from './managers/CalendarManager.js';
import { NavigationManager } from './managers/NavigationManager.js';
import { ViewManager } from './managers/ViewManager.js';
import { EventManager } from './managers/EventManager.js';
import { EventRenderer } from './managers/EventRenderer.js';
import { GridManager } from './managers/GridManager.js';
import { ScrollManager } from './managers/ScrollManager.js';
import { calendarConfig } from './core/CalendarConfig.js';
import { CalendarTypeFactory } from './factories/CalendarTypeFactory.js';

/**
 * Initialize the calendar application with new state-driven approach
 */
async function initializeCalendar(): Promise<void> {
  console.log('🗓️ Initializing Calendar Plantempus with state management...');
  
  // Declare managers outside try block for global access
  let calendarManager: CalendarManager;
  let navigationManager: NavigationManager;
  let viewManager: ViewManager;
  let eventManager: EventManager;
  let eventRenderer: EventRenderer;
  let gridManager: GridManager;
  let scrollManager: ScrollManager;
  
  try {
    // Use the singleton calendar configuration
    const config = calendarConfig;
    
    // Initialize the CalendarTypeFactory before creating managers
    console.log('🏭 Phase 0: Initializing CalendarTypeFactory...');
    CalendarTypeFactory.initialize();
    
    // Initialize managers in proper order
    console.log('📋 Phase 1: Creating core managers...');
    calendarManager = new CalendarManager(eventBus, config);
    navigationManager = new NavigationManager(eventBus);
    viewManager = new ViewManager(eventBus);
    
    console.log('🎯 Phase 2: Creating data and rendering managers...');
    // These managers will now respond to state-driven events
    eventManager = new EventManager(eventBus);
    eventRenderer = new EventRenderer(eventBus);
    
    console.log('🏗️ Phase 3: Creating layout managers...');  
    scrollManager = new ScrollManager(); // Will respond to GRID_RENDERED
    gridManager = new GridManager(); // Will respond to RENDERING_STARTED
    
    // Enable debug mode for development
    eventBus.setDebug(true);
    
    // Initialize all managers using state-driven coordination
    console.log('🚀 Phase 4: Starting state-driven initialization...');
    await calendarManager.initialize(); // Now async and fully coordinated
    
    console.log('🎊 Calendar Plantempus initialized successfully!');
    console.log('📊 Initialization Report:', calendarManager.getInitializationReport());
    
  } catch (error) {
    console.error('💥 Calendar initialization failed:', error);
    // Could implement fallback or retry logic here
    throw error;
  }
  
  // Expose to window for debugging
  (window as any).calendarDebug = {
    eventBus,
    calendarManager,
    navigationManager,
    viewManager,
    eventManager,
    eventRenderer,
    gridManager,
    scrollManager
  };
}

// Initialize when DOM is ready - now handles async properly
if (document.readyState === 'loading') {
  document.addEventListener('DOMContentLoaded', () => {
    initializeCalendar().catch(error => {
      console.error('Failed to initialize calendar:', error);
    });
  });
} else {
  initializeCalendar().catch(error => {
    console.error('Failed to initialize calendar:', error);
  });
}