Create utils/decorators.py

app/utils/decorators.py

@@ -0,0 +1,35 @@
+from functools import wraps
+from flask import redirect, url_for, flash
+from flask_login import current_user
+
+def admin_required(f):
+    """Decorator to restrict access to admin users only."""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        if not current_user.is_authenticated or current_user.role != "admin":
+            flash("You do not have permission to access this page.", "error")
+            return redirect(url_for("dashboard.index"))
+        return f(*args, **kwargs)
+    return decorated_function
+
+def login_required_json(f):
+    """Decorator to require login for JSON API endpoints."""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        if not current_user.is_authenticated:
+            return jsonify({"error": "Login required"}), 401
+        return f(*args, **kwargs)
+    return decorated_function
+
+def cache_response(timeout=60):
+    """Decorator to cache the response of a view for a given time."""
+    @wraps(f)
+    def decorated_function(*args, **kwargs):
+        cache_key = request.path
+        cached_response = cache.get(cache_key)
+        if cached_response:
+            return cached_response
+        response = f(*args, **kwargs)
+        cache.set(cache_key, response, timeout=timeout)
+        return response
+    return decorated_function