first commit

app/middlewares/cors.py

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+# app/middlewares/cors.py
+from flask import request
+
+def cors_headers(response):
+    """Allow cross-origin requests"""
+    response.headers["Access-Control-Allow-Origin"] = "*"
+    response.headers["Access-Control-Allow-Methods"] = "GET, POST, PUT, PATCH, DELETE"
+    response.headers["Access-Control-Allow-Headers"] = "Authorization, Content-Type"
+    return response

app/middlewares/encryption.py

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+# app/middlewares/encryption.py
+from cryptography.fernet import Fernet
+import os
+
+ENCRYPTION_KEY = os.getenv("ENCRYPTION_KEY", Fernet.generate_key())
+cipher = Fernet(ENCRYPTION_KEY)
+
+def encrypt_data(data):
+    """Encrypt sensitive data"""
+    return cipher.encrypt(data.encode()).decode()
+
+def decrypt_data(data):
+    """Decrypt sensitive data"""
+    return cipher.decrypt(data.encode()).decode()

app/middlewares/request_validator.py

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+# app/middlewares/request_validator.py
+from flask import request
+from app.helpers.response_helper import ResponseHelper
+
+def validate_json():
+    """Ensure request has valid JSON"""
+    if not request.is_json:
+        return ResponseHelper.error(
+                message="Request must be JSON",
+                status_code=415
+            )

app/middlewares/verify_api_key.py

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+# app/middlewares/auth.py
+from flask import request, jsonify
+
+def require_api_key():
+    """Middleware to check if API key is present"""
+    api_key = request.headers.get("X-API-KEY")
+    if not api_key:
+        return jsonify({"error": "Missing API key"}), 403