优化
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290
client/flutter/lib/pages/login_page.dart
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290
client/flutter/lib/pages/login_page.dart
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:sales_chat/providers/auth_provider.dart';
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import 'package:sales_chat/theme/app_theme.dart';
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/// 登录页面 —— 微信风格，简约现代
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class LoginPage extends StatefulWidget {
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const LoginPage({super.key});
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@override
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State<LoginPage> createState() => _LoginPageState();
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}
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class _LoginPageState extends State<LoginPage> {
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final _formKey = GlobalKey<FormState>();
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final _accountController = TextEditingController();
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final _passwordController = TextEditingController();
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bool _obscurePassword = true;
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@override
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void dispose() {
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_accountController.dispose();
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_passwordController.dispose();
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super.dispose();
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}
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/// 处理登录请求
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Future<void> _handleLogin() async {
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if (!_formKey.currentState!.validate()) return;
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final authProvider = context.read<AuthProvider>();
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final account = _accountController.text.trim();
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// 判断输入是邮箱还是用户名
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final isEmail = account.contains('@');
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final success = await authProvider.login(
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email: isEmail ? account : null,
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username: isEmail ? null : account,
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password: _passwordController.text,
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);
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if (success && mounted) {
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Navigator.of(context).pushReplacementNamed('/home');
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}
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}
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/// 访客登录弹窗
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Future<void> _handleGuestLogin() async {
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final nickname = await showDialog<String>(
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context: context,
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builder: (context) {
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final controller = TextEditingController();
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return AlertDialog(
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title: const Text('访客登录'),
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content: TextField(
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controller: controller,
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decoration: const InputDecoration(
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labelText: '昵称',
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hintText: '请输入昵称',
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),
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('取消'),
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),
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ElevatedButton(
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onPressed: () => Navigator.pop(context, controller.text.trim()),
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child: const Text('登录'),
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),
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],
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);
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},
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);
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if (nickname != null && nickname.isNotEmpty && mounted) {
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final authProvider = context.read<AuthProvider>();
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final success = await authProvider.loginAsGuest(nickname: nickname);
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if (success && mounted) {
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Navigator.of(context).pushReplacementNamed('/home');
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: AppTheme.scaffoldBackground,
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body: SafeArea(
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child: Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 24),
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 400),
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child: Column(
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children: [
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// 顶部品牌区域
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const SizedBox(height: 48),
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Text(
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'销售聊天',
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style: Theme.of(context).textTheme.headlineLarge?.copyWith(
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fontWeight: FontWeight.bold,
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color: AppTheme.textPrimary,
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fontSize: 28,
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 40),
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// 白色卡片容器 —— 表单区域
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Container(
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padding: const EdgeInsets.symmetric(
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horizontal: 24,
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vertical: 28,
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),
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decoration: BoxDecoration(
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color: AppTheme.cardBackground,
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borderRadius: BorderRadius.circular(12),
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),
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child: Form(
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key: _formKey,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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// 账号输入框（邮箱或用户名）
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TextFormField(
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controller: _accountController,
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keyboardType: TextInputType.emailAddress,
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decoration: const InputDecoration(
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labelText: '邮箱 / 用户名',
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hintText: '请输入邮箱或用户名',
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prefixIcon: Icon(Icons.person_outline),
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return '请输入邮箱或用户名';
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}
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return null;
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},
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),
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const SizedBox(height: 14),
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// 密码输入框
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TextFormField(
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controller: _passwordController,
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obscureText: _obscurePassword,
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decoration: InputDecoration(
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labelText: '密码',
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hintText: '请输入密码',
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prefixIcon: const Icon(Icons.lock_outlined),
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suffixIcon: IconButton(
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icon: Icon(
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_obscurePassword
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? Icons.visibility_off
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: Icons.visibility,
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),
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onPressed: () {
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setState(() {
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_obscurePassword = !_obscurePassword;
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});
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},
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),
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),
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validator: (value) {
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if (value == null || value.isEmpty) {
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return '请输入密码';
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}
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if (value.length < 6) {
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return '密码至少需要6个字符';
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}
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return null;
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},
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onFieldSubmitted: (_) => _handleLogin(),
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),
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const SizedBox(height: 24),
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// 登录按钮
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Consumer<AuthProvider>(
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builder: (context, auth, _) {
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return ElevatedButton(
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onPressed: auth.isLoading ? null : _handleLogin,
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style: ElevatedButton.styleFrom(
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backgroundColor: AppTheme.primaryColor,
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padding: const EdgeInsets.symmetric(vertical: 14),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(8),
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),
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),
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child: auth.isLoading
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? const SizedBox(
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height: 20,
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width: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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valueColor: AlwaysStoppedAnimation<Color>(
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Colors.white),
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),
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)
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: const Text(
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'登录',
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style: TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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),
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),
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);
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},
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),
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],
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),
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),
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),
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// 错误信息 —— 卡片下方，红色提示文字
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Consumer<AuthProvider>(
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builder: (context, auth, _) {
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if (auth.error != null) {
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return Padding(
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padding: const EdgeInsets.only(top: 12),
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child: Text(
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auth.error!,
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style: TextStyle(
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color: AppTheme.errorColor,
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fontSize: 13,
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),
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textAlign: TextAlign.center,
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),
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);
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}
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return const SizedBox.shrink();
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},
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),
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const SizedBox(height: 20),
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// 访客登录 —— 文字按钮，低调
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Consumer<AuthProvider>(
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builder: (context, auth, _) {
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return TextButton(
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onPressed: auth.isLoading ? null : _handleGuestLogin,
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style: TextButton.styleFrom(
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foregroundColor: AppTheme.textSecondary,
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),
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child: const Text(
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'访客登录',
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style: TextStyle(fontSize: 14),
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),
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);
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},
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),
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const SizedBox(height: 8),
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// 注册链接
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(
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'没有账号？',
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style: TextStyle(
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color: AppTheme.textSecondary,
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fontSize: 14,
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),
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),
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TextButton(
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onPressed: () {
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Navigator.of(context).pushReplacementNamed('/register');
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},
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style: TextButton.styleFrom(
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padding: const EdgeInsets.symmetric(horizontal: 4),
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minimumSize: Size.zero,
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tapTargetSize: MaterialTapTargetSize.shrinkWrap,
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),
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child: const Text(
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'注册',
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style: TextStyle(fontSize: 14),
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),
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),
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],
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),
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],
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),
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),
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),
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),
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),
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);
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}
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}
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