mynotes: add error popup in login page

lib/utilities/show_error_dialog.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+Future<void> showErrorDialog(
+  BuildContext context,
+  String text,
+) {
+  return showDialog(
+    context: context,
+    builder: (context) {
+      return AlertDialog(
+        title: const Text('An error occurred'),
+        content: Text(text),
+        actions: [
+          TextButton(
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+            child: const Text('OK'),
+          )
+        ],
+      );
+    },
+  );
+}

lib/views/login_view.dart

@@ -4,6 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:mynotes/constants/routes.dart';
 import 'package:mynotes/firebase_options.dart';
 import 'dart:developer' as devtools show log;
+import 'package:mynotes/utilities/show_error_dialog.dart';
 
 class LoginView extends StatefulWidget {
   const LoginView({super.key});
@@ -73,15 +74,31 @@ class _LoginViewState extends State<LoginView> {
                 );
               } on FirebaseAuthException catch (e) {
                 if (e.code == 'user-not-found') {
-                  devtools.log('No user found for that email.');
+                  await showErrorDialog(
+                    context,
+                    'No user found for that email.',
+                  );
                 } else if (e.code == 'wrong-password') {
-                  devtools.log('Wrong password provided for that user.');
+                  await showErrorDialog(
+                    context,
+                    'Wrong password provided for that user.',
+                  );
                 } else if (e.code == 'invalid-credential') {
-                  devtools.log('Invalid credential provided.');
+                  await showErrorDialog(
+                    context,
+                    'Invalid credential provided.',
+                  );
+                } else {
+                  await showErrorDialog(
+                    context,
+                    e.toString(),
+                  );
                 }
               } catch (e) {
-                devtools.log(e.toString());
+                await showErrorDialog(
-                devtools.log(e.runtimeType.toString());
+                  context,
+                  e.toString(),
+                );
               }
             },
             child: const Text('Login', style: TextStyle(color: Colors.blue)),