import os
import tempfile
from flask import Flask
from flask_cors import CORS
from config import Config
from routes.api import api_bp
from routes.health import health_bp

def create_app():
    app = Flask(__name__)
    app.config.from_object(Config)
    
    # Configure CORS - allow localhost in development
    if Config.IS_DEVELOPMENT:
        CORS(app, 
             origins=["http://localhost:3000", "http://127.0.0.1:3000", Config.FRONTEND_URL],
             supports_credentials=True,
             allow_headers=["Content-Type", "Authorization", "Access-Control-Allow-Credentials"],
             methods=["GET", "POST", "DELETE", "OPTIONS"])
        print(f"Development mode: CORS enabled for localhost:3000 and {Config.FRONTEND_URL}")
    else:
        CORS(app, origins=[Config.FRONTEND_URL])
        print(f"Production mode: CORS enabled for {Config.FRONTEND_URL}")
    
    # Register blueprints
    app.register_blueprint(health_bp, url_prefix='/')
    app.register_blueprint(api_bp, url_prefix='/api')
    
    # Create temp download directory
    print(f"DEBUG: Creating temp directory at: {Config.TEMP_DOWNLOAD_PATH}")
    os.makedirs(Config.TEMP_DOWNLOAD_PATH, exist_ok=True)
    print(f"DEBUG: Temp directory exists: {os.path.exists(Config.TEMP_DOWNLOAD_PATH)}")
    print(f"DEBUG: Temp directory is writable: {os.access(Config.TEMP_DOWNLOAD_PATH, os.W_OK)}")
    
    # Set tempfile module to use our directory as default
    tempfile.tempdir = Config.TEMP_DOWNLOAD_PATH
    print(f"DEBUG: Set tempfile.tempdir to: {tempfile.tempdir}")
    
    return app

if __name__ == '__main__':
    app = create_app()
    app.run(host='0.0.0.0', port=Config.PORT, debug=Config.FLASK_DEBUG)