"""
Main application entry point for the Zulip Bot application.
"""
import os
from flask import Flask, request, jsonify
from app.config import load_config

def create_app(config_name=None):
    """Create and configure the Flask application."""
    app = Flask(__name__)
    
    # Load configuration
    config = load_config(config_name)
    app.config.from_object(config)
    
    # Set DEBUG mode for the app
    app.config['DEBUG'] = True
    
    # Override any environment flags to disable safety filters
    os.environ['GEMINI_NO_SAFETY'] = 'true'
    
    # Apply NumPy compatibility patch for ChromaDB
    from app.utils import patch_chromadb_numpy
    patch_chromadb_numpy()
    
    # Initialize database connections
    from app.db import init_db
    init_db(app)
    
    # Check if we're in the main process or a Flask reloader worker
    # When Flask reloads in debug mode, it sets an environment variable
    # We only want to start services in the main process to avoid duplication
    is_flask_reloader_process = os.environ.get('WERKZEUG_RUN_MAIN') == 'true'
    is_main_process = not os.environ.get('WERKZEUG_RUN_MAIN')
    
    # Only start services in the main process or if --no-reload is used
    # This prevents duplicate services when using Flask's debug mode
    should_start_services = is_flask_reloader_process or is_main_process
    
    # Initialize message sync service and bot service regardless of process
    # but only start them in the appropriate process
    from app.utils.sync_service import MessageSyncService
    sync_service = MessageSyncService(sync_interval=60)  # Sync every 60 seconds
    
    # Store sync_service in app context so it can be accessed elsewhere
    app.sync_service = sync_service
    
    # Initialize Zulip bot service
    from app.utils.bot_service import ZulipBotService
    bot_service = ZulipBotService()
    
    # Store bot_service in app context so it can be accessed elsewhere
    app.bot_service = bot_service
    
    # Start the services in a better way (avoiding deprecated before_first_request)
    # But only if this is the main process or Flask reloader's main thread
    with app.app_context():
        # Add logging to help diagnose any issues
        app.logger.info(f"App initialization, should_start_services={should_start_services}, " 
                      f"is_main_process={is_main_process}, is_flask_reloader_process={is_flask_reloader_process}")
        
        if should_start_services:
            # Start the sync service
            app.logger.info("Starting sync service...")
            sync_service.start()
            
            # Start the bot service and log the result
            app.logger.info("Starting Zulip bot service...")
            if bot_service.thread and bot_service.thread.is_alive():
                app.logger.info("Bot service is already running, not starting again")
            else:
                bot_service.start()
                app.logger.info("Bot service started successfully")
        else:
            app.logger.info("Skipping service startup in Flask reloader process")
    
    # Register a shutdown function to stop the services
    @app.teardown_appcontext
    def stop_services(exception=None):
        if hasattr(app, 'sync_service'):
            app.sync_service.stop()
        if hasattr(app, 'bot_service'):
            app.bot_service.stop()
    
    # Register blueprints
    # This will be implemented later
    
    @app.route('/health')
    def health_check():
        """Simple health check endpoint."""
        return jsonify({'status': 'ok'})
    
    @app.route('/sync/now')
    def trigger_sync():
        """Trigger an immediate sync."""
        if hasattr(app, 'sync_service'):
            app.sync_service.sync_now()
            return jsonify({'status': 'sync_triggered'})
        return jsonify({'status': 'error', 'message': 'Sync service not available'}), 500
    
    @app.route('/bot/status')
    def bot_status():
        """Get the status of the bot service."""
        if hasattr(app, 'bot_service') and app.bot_service.thread and app.bot_service.thread.is_alive():
            return jsonify({'status': 'running'})
        return jsonify({'status': 'stopped'})
    
    @app.route('/bot/start', methods=['POST'])
    def start_bot():
        """Start the bot service."""
        if hasattr(app, 'bot_service'):
            app.bot_service.start()
            return jsonify({'status': 'started'})
        return jsonify({'status': 'error', 'message': 'Bot service not available'}), 500
    
    @app.route('/bot/stop', methods=['POST'])
    def stop_bot():
        """Stop the bot service."""
        if hasattr(app, 'bot_service'):
            app.bot_service.stop()
            return jsonify({'status': 'stopped'})
        return jsonify({'status': 'error', 'message': 'Bot service not available'}), 500
    
    @app.route('/bot/test', methods=['POST'])
    def test_bot():
        """Send a test message to verify the bot is working."""
        if not hasattr(app, 'bot_service'):
            return jsonify({'status': 'error', 'message': 'Bot service not available'}), 500
        
        data = request.get_json()
        if not data or 'recipient' not in data or 'content' not in data:
            return jsonify({'status': 'error', 'message': 'Missing required fields: recipient, content'}), 400
        
        result = app.bot_service.send_test_message(data['recipient'], data['content'])
        return jsonify({'status': 'sent', 'result': result})
    
    @app.route('/bot/reset-cache', methods=['POST'])
    def reset_bot_cache():
        """Reset the bot's message cache to fix issues with message processing."""
        if not hasattr(app, 'bot_service'):
            return jsonify({'status': 'error', 'message': 'Bot service not available'}), 500
        
        result = app.bot_service.reset_cache()
        return jsonify({'status': 'success', 'message': result})
    
    return app