Resolve "Fix error messages kratos during login"

Closes #131 (closed)

backend/web/login/login.py

@@ -131,12 +131,52 @@ def login():
     # Check if we are logged in:
     identity = get_auth()
 
+    # List to contain messages pushed to the frontend
+    messages = list()
+
+
     refresh = False
     flow = request.args.get("flow")
     if flow:
         cookies = request.headers['cookie']
         flow = kratos_public_frontend_api.get_login_flow(flow, cookie=cookies)
         refresh = flow['refresh']
+        if refresh:
+            message = {
+                "id": "S_CONFIRM_CREDENTIALS",
+                "message": "Please confirm your credentials to complete this action.",
+                "type": "info"
+            }
+            messages.append(message)
+        try:
+            for msg in flow.ui.messages.value:
+                current_app.logger.info("Kratos message:" + msg.text)
+                if msg.id == 4000006:
+                    message = {
+                        "id": msg.id,
+                        "message": "The provided login e-mail address or password is incorrect. Please try again.",
+                        "type": "error"
+                    }
+                else:
+                    message = {
+                        "id": msg.id,
+                        "message": msg.text,
+                    }
+
+                    if msg.type == 'error':
+                        message['type'] = 'error'
+                    else:
+                        message['type'] = 'info'
+
+                messages.append(message)
+
+        except ory_kratos_client.exceptions.ApiAttributeError as ex:
+            # This exception is expected when there are no messages
+            pass
+        except Exception as ex:
+            # An unkown exception happens, we log the error but continue as it
+            # only affects the messages part
+            current_app.logger.error("Unknown exception: " + str(ex))
 
     if identity and not refresh:
         # We are already logged in, and don't need to refresh.
@@ -164,7 +204,9 @@ def login():
     # or `not identity`
     #     User is not logged in yet.
     # In either case, we present the login screen now.
-    return render_template("login.html", api_url=KRATOS_PUBLIC_URL, dashboard_url=DASHBOARD_URL, refresh=refresh, demo=DEMO_INSTANCE)
+    return render_template("login.html", api_url=KRATOS_PUBLIC_URL,
+            dashboard_url=DASHBOARD_URL, messages=messages,
+            demo=DEMO_INSTANCE)
 
 
 @web.route("/auth", methods=["GET", "POST"])