"""
Flask API module for Clean-Tracks.
"""

from flask import Flask, render_template
from flask_cors import CORS
from flask_socketio import SocketIO
import os

# Create Flask app factory
def create_app(config=None):
    """Create and configure the Flask application."""
    # Set template and static folder paths
    template_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', 'templates'))
    static_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', 'static'))
    
    app = Flask(__name__, template_folder=template_dir, static_folder=static_dir)
    
    # Default configuration
    app.config.update({
        'SECRET_KEY': 'dev-secret-key-change-in-production',
        'MAX_CONTENT_LENGTH': 500 * 1024 * 1024,  # 500MB max file size
        'UPLOAD_FOLDER': '/tmp/clean-tracks-uploads',
        'DATABASE_URL': None,  # Will use default SQLite
        'CORS_ORIGINS': '*',
    })
    
    # Override with custom config
    if config:
        app.config.update(config)
    
    # Initialize CORS
    CORS(app, origins=app.config['CORS_ORIGINS'])
    
    # Initialize SocketIO
    socketio = SocketIO(app, cors_allowed_origins="*")
    
    # Add main route
    @app.route('/')
    def index():
        """Serve the main application page."""
        return render_template('index.html')
    
    @app.route('/privacy')
    def privacy():
        """Serve the privacy policy page."""
        return render_template('privacy.html')
    
    @app.route('/terms')
    def terms():
        """Serve the terms of service page."""
        return render_template('terms.html')
    
    # Register blueprints
    from .routes import api_bp
    from .websocket import register_socketio_handlers
    
    app.register_blueprint(api_bp, url_prefix='/api')
    register_socketio_handlers(socketio)
    
    # Store socketio instance on app
    app.socketio = socketio
    
    return app, socketio