first commit

app/api/middlewares/app_id_checker.py

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+from functools import wraps
+from flask import request, jsonify
+from app.utils.logger import logger
+from app.config import Config
+
+
+
+VALID_APP_ID = Config.VALID_APP_ID
+
+def require_app_id(f):
+    """Decorator to enforce App-ID validation."""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        app_id = request.headers.get("App-ID")
+
+        if not app_id:
+            logger.error("Unauthorized access: Missing App-ID.")
+            return jsonify({"message": "Invalid request"}), 400
+
+
+        if app_id != VALID_APP_ID:
+            logger.error(f"Unauthorized access: Invalid App-ID {app_id}.")
+            return jsonify({"message": "Invalid request"}), 400
+
+        return f(*args, **kwargs)
+
+    return decorated_function