Add group listing endpoint to API with optional user filtering

Author: upayanmazumder

api/auth/group/list.py

@@ -0,0 +1,39 @@
+# FILE: auth/group/list.py
+from flask import Blueprint, request, jsonify
+from firebase_admin import firestore
+
+list_group_bp = Blueprint('list_group', __name__)
+
+db = firestore.client()
+
+@list_group_bp.route('/auth/group/list', methods=['GET'])
+def list_groups():
+    """
+    Route to retrieve the list of public groups. Optionally filter by user email if a 'user' query parameter is provided.
+    """
+    try:
+        # Get the optional 'user' query parameter
+        user_email = request.args.get('user')
+
+        # Query Firestore for public groups
+        groups_ref = db.collection('groups').where("privacy", "==", "public")
+        public_groups = groups_ref.stream()
+
+        groups_list = []
+        for group in public_groups:
+            group_data = group.to_dict()
+            if user_email:
+                # If filtering by user email, only include groups where the user is a member
+                if user_email in group_data.get('members', []):
+                    groups_list.append({"id": group.id, **group_data})
+            else:
+                # Include all public groups if no user filter is applied
+                groups_list.append({"id": group.id, **group_data})
+
+        return jsonify({
+            "success": True,
+            "groups": groups_list
+        }), 200
+
+    except Exception as e:
+        return jsonify({"error": str(e)}), 500

api/main.py

@@ -69,12 +69,14 @@
     from auth.group.create import create_group_bp
     from auth.group.delete import delete_group_bp
     from auth.group.privacy import privacy_group_bp
+    from auth.group.list import list_group_bp
 
     app.register_blueprint(signup_bp)
     app.register_blueprint(login_bp)
     app.register_blueprint(create_group_bp)
     app.register_blueprint(delete_group_bp)
     app.register_blueprint(privacy_group_bp)
+    app.register_blueprint(list_group_bp)
     print("Auth blueprints registered successfully.")
 except ImportError as e:
     print(f"Error importing blueprints: {e}")