Create login widget

2025-06-19 00:05:16 +00:00 · 2021-04-17 09:52:05 +02:00
parent d426bf1eb6
commit dafa9e157a
3 changed files with 118 additions and 111 deletions
--- a/lib/ui/widgets/login_widget.dart
+++ b/lib/ui/widgets/login_widget.dart
@ -0,0 +1,109 @@
+import 'package:comunic/helpers/account_helper.dart';
+import 'package:comunic/models/authentication_details.dart';
+import 'package:comunic/utils/input_utils.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Login widget
+///
+/// Used to authenticate user
+///
+/// @author Pierre Hubert
+
+class LoginWidget extends StatefulWidget {
+  final void Function() onSignedIn;
+
+  const LoginWidget({Key key, @required this.onSignedIn}) : super(key: key);
+
+  @override
+  _LoginWidgetState createState() => _LoginWidgetState();
+}
+
+class _LoginWidgetState extends State<LoginWidget> {
+  final _emailEditingController = TextEditingController();
+  final _passwordEditionController = TextEditingController();
+  bool _loading = false;
+  AuthResult _authResult;
+
+  String get _currEmail => _emailEditingController.text;
+
+  String get _currPassword => _passwordEditionController.text;
+
+  bool get _canSubmit => validateEmail(_currEmail) && _currPassword.length >= 3;
+
+  /// Build error card
+  Widget _buildErrorCard() {
+    if (_authResult == null) return null;
+
+    //Determine the right message
+    final message = (_authResult == AuthResult.INVALID_CREDENTIALS
+        ? tr("Invalid credentials!")
+        : (_authResult == AuthResult.TOO_MANY_ATTEMPTS
+            ? tr(
+                "Too many unsuccessful login attempts! Please try again later...")
+            : tr("A network error occurred!")));
+
+    return buildErrorCard(message);
+  }
+
+  @override
+  Widget build(BuildContext context) => Column(
+        children: [
+          Container(
+            child: _buildErrorCard(),
+          ),
+          //Email address
+          TextField(
+            controller: _emailEditingController,
+            keyboardType: TextInputType.emailAddress,
+            decoration: InputDecoration(
+                labelText: tr("Email address"),
+                alignLabelWithHint: true,
+                errorText: _currEmail.length > 0 && !validateEmail(_currEmail)
+                    ? tr("Invalid email address!")
+                    : null),
+            onChanged: (s) => setState(() {}),
+          ),
+
+          //Password
+          TextField(
+            obscureText: true,
+            decoration: InputDecoration(
+              labelText: tr("Password"),
+              alignLabelWithHint: true,
+            ),
+            onChanged: (s) => setState(() {}),
+            onSubmitted: _canSubmit ? (s) => _submitForm(context) : null,
+          ),
+
+          Container(
+            padding: EdgeInsets.all(8.0),
+            child: _loading
+                ? CircularProgressIndicator()
+                : ElevatedButton(
+                    child: Text(tr("Sign in")),
+                    onPressed: _canSubmit ? () => _submitForm(context) : null,
+                  ),
+          ),
+        ],
+      );
+
+  /// Call this whenever the user request to perform login
+  Future<void> _submitForm(BuildContext context) async {
+    setState(() {
+      _loading = true;
+    });
+
+    final loginResult = await AccountHelper().signIn(
+        AuthenticationDetails(email: _currEmail, password: _currPassword));
+
+    if (loginResult == AuthResult.SUCCESS)
+      widget.onSignedIn();
+    else
+      setState(() {
+        _authResult = loginResult;
+        _loading = false;
+      });
+  }
+}