updates, back and front

backend/app/__init__.py

@@ -1,6 +1,7 @@
 import os
 
-from flask import Flask, send_from_directory
+from flask import Flask, send_from_directory, jsonify
+from werkzeug.exceptions import HTTPException, NotFound, BadRequest
 from sqlalchemy import text
 
 from .extensions import db, migrate, cors
@@ -35,6 +36,21 @@ def create_app(config_name=None):
         if path and os.path.exists(os.path.join(static_folder, path)):
             return send_from_directory(static_folder, path)
         return send_from_directory(static_folder, 'index.html')
+    
+    @app.errorhandler(404)
+    def not_found(e):
+        return jsonify({'error': 'Resource not found', 'message': str(e)}), 404
+
+    @app.errorhandler(400)
+    def bad_request(e):
+        return jsonify({'error': 'Bad request', 'message': str(e)}), 400
+
+    @app.errorhandler(Exception)
+    def handle_exception(e):
+        if isinstance(e, HTTPException):
+            return jsonify({'error': e.name, 'message': e.description}), e.code
+        app.logger.error(f"Unhandled exception: {str(e)}", exc_info=True)
+        return jsonify({'error': 'Internal server error', 'message': 'An unexpected error occurred'}), 500
 
     return app