新增忘記密碼頁面/忘記密碼，傳送臨時密碼

lib/ForgetPasswordPage.dart

@@ -0,0 +1,217 @@
+import 'package:flutter/material.dart';
+import 'package:mysql_client/mysql_client.dart';
+import 'dart:async';
+import 'dart:math';
+import 'package:mailer/mailer.dart';
+import 'package:mailer/smtp_server.dart';
+import 'package:validators/validators.dart' as validator;
+
+void main() {
+  runApp(MaterialApp(
+    home: ForgetPasswordPage(),
+  ));
+}
+
+class ForgetPasswordPage extends StatefulWidget {
+  @override
+  _ForgetPasswordPageState createState() => _ForgetPasswordPageState();
+}
+
+class _ForgetPasswordPageState extends State<ForgetPasswordPage> {
+  late FocusNode _emailFocusNode;
+  final TextEditingController _emailController = TextEditingController();
+
+  bool _isButtonEnabled = true;
+  String _generatedCode = ''; // 用來存儲生成的臨時密碼
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchData();
+    _emailFocusNode = FocusNode();
+  }
+
+  void _fetchData() async {
+    final conn = await MySQLConnection.createConnection(
+      host: '203.64.84.154',
+      port: 33061,
+      userName: 'root',
+      password: 'Topic@2024',
+      databaseName: 'care',
+    );
+    await conn.connect();
+  }
+
+  String _generateVerificationCode() {
+    final random = Random();
+    const availableChars = '0123456789';
+    return List.generate(
+        6, (index) => availableChars[random.nextInt(availableChars.length)])
+        .join();
+  }
+
+  Future<void> _sendEmail(String recipientEmail, String code) async {
+    final smtpServer = SmtpServer(
+      'smtp.gmail.com',
+      port: 587,
+      username: 'kueikuei8011@gmail.com',
+      password: 'yqns onwf tydq obzl',
+      ssl: false,
+      allowInsecure: false,
+    );
+
+    final message = Message()
+      ..from = Address('kueikuei8011@gmail.com', 'Kuei')
+      ..recipients.add(recipientEmail)
+      ..subject = '您的臨時密碼'
+      ..text = '您的臨時密碼是: $code';
+
+    try {
+      await send(message, smtpServer);
+      print('臨時密碼發送成功');
+    } catch (e) {
+      print('臨時密碼發送失敗: $e');
+    }
+  }
+
+  void _sendVerificationCode() async {// 發送並更新資料庫中的密碼
+    final email = _emailController.text;
+    if (email.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('請輸入電子信箱地址')),
+      );
+      return;
+    } else if (!validator.isEmail(email)) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('請輸入正確的電子信箱')),
+      );
+      _emailFocusNode.requestFocus();
+      return;
+    }
+
+    //_generatedCode = _generateVerificationCode();
+    //_sendEmail(email, _generatedCode);
+
+    final conn = await MySQLConnection.createConnection(
+      host: '203.64.84.154',
+      port: 33061,
+      userName: 'root',
+      password: 'Topic@2024',
+      databaseName: 'care',
+    );
+    await conn.connect();
+    try {
+      var result = await conn.execute(
+        'SELECT * FROM HomeLogin WHERE homeEmail = :email',
+        {'email': email},
+      );
+
+      if (result.rows.isEmpty) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('失敗')),
+        );
+      } else {
+
+        _generatedCode = _generateVerificationCode();
+        await conn.execute(
+          'UPDATE HomeLogin SET homePassword = :tempPassword WHERE homeEmail = :email',
+          {'tempPassword': _generatedCode, 'email': email},
+        );
+
+        // 發送臨時密碼到用戶電子信箱
+        _sendEmail(email, _generatedCode);
+
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text('臨時密碼已發送到您的電子信箱')),
+        );
+
+        _emailController.clear();
+      }
+    } catch (e) {
+      print('資料庫錯誤: $e');
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text('註冊失敗：系統錯誤')),
+      );
+    } finally {
+      await conn.close();
+    }
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+    _emailFocusNode.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: SafeArea(
+        child: Center(
+          child: SingleChildScrollView(
+            child: Padding(
+              padding: const EdgeInsets.symmetric(horizontal: 32.0),
+              child: Column(
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Container(
+                    margin: EdgeInsets.only(bottom: 40),
+                    height: 100,
+                    child: Icon(
+                      Icons.account_circle,
+                      size: 100,
+                      color: Color(0xFF4FC3F7),
+                    ),
+                  ),
+                  Text(
+                    '全方位照護守護者',
+                    style: TextStyle(
+                      fontSize: 32,
+                      fontWeight: FontWeight.bold,
+                      color: Colors.black,
+                    ),
+                  ),
+                  SizedBox(height: 20),
+                  TextField(
+                    controller: _emailController,
+                    focusNode: _emailFocusNode,
+                    decoration: InputDecoration(
+                      border: OutlineInputBorder(),
+                      prefixIcon: Icon(Icons.email_outlined),
+                      labelText: '電子信箱',
+                    ),
+                    keyboardType: TextInputType.emailAddress,
+                  ),
+                  SizedBox(height: 20),
+
+                  ElevatedButton(
+                    onPressed:  _sendVerificationCode,
+                    child: Text('送出'),
+                    style: ElevatedButton.styleFrom(
+                      backgroundColor: Color(0xFF4FC3F7),
+                      padding:
+                      EdgeInsets.symmetric(horizontal: 50, vertical: 15),
+                      textStyle: TextStyle(fontSize: 18),
+                    ),
+                  ),
+                  SizedBox(height: 10),
+                  ElevatedButton(
+                    onPressed: () {
+                      Navigator.pop(context);
+                    },
+                    child: Text('取消'),
+                    style: TextButton.styleFrom(
+                      backgroundColor: Colors.transparent,
+                      textStyle: TextStyle(fontSize: 18),
+                      shadowColor: Colors.transparent,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/PersonalInfo.dart

@@ -470,11 +470,6 @@ class _AccountPageState extends State<AccountPage> {
         subtitle: _isEditing
             ? TextField(
               controller: _emailController,
-              onChanged: (value) {
-                setState(() {
-                  widget.email = value;
-                });
-              },
             )
             : Text(widget.email),
       ),
@@ -495,11 +490,7 @@ class _AccountPageState extends State<AccountPage> {
                   },
                 ),
               ),
-              onChanged: (value) {
+
-                setState(() {
-                  widget.password = value;
-                });
-              },
             )
             : Text(widget.password),
       ),

lib/main.dart

@@ -5,6 +5,7 @@ import 'package:topic/HomePage.dart';
 import 'package:mysql_client/mysql_client.dart';
 import 'package:topic/NoSwipeBackRoute.dart';
 import 'package:topic/RegisterPage.dart';
+import 'package:topic/ForgetPasswordPage.dart';
 import 'package:validators/validators.dart' as validator;
 
 
@@ -243,9 +244,7 @@ class _LoginPageState extends State<LoginPage> {
                         Navigator.push(
                           context,
                           MaterialPageRoute(
-                              builder: (context) => HomePage(
+                              builder: (context) => ForgetPasswordPage()),
-                                    email: _emailController.text,
-                                  )),
                         );
                       },
                       child: Text('忘記密碼'),