317 lines
12 KiB
Dart
317 lines
12 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../../providers/user_provider.dart';
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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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bool isRegisterMode = false;
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bool isLoading = false;
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final usernameController = TextEditingController();
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final passwordController = TextEditingController();
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final inviterController = TextEditingController();
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String errorMessage = '';
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// 定义主题粉色
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static const _pinkColor = Color(0xFFFFC0D6);
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Future <void> submit() async {
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// 基本验证
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if (usernameController.text.trim().isEmpty || passwordController.text.trim().isEmpty) {
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setState(() => errorMessage = '用户名和密码不能为空');
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return;
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}
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setState(() {
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isLoading = true;
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errorMessage = '';
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});
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final userProvider = Provider.of<UserProvider>(context, listen: false);
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try {
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if (isRegisterMode) {
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await userProvider.register(
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usernameController.text.trim(),
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passwordController.text.trim(),
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inviterController.text.trim(),
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);
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} else {
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await userProvider.login(
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usernameController.text.trim(),
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passwordController.text.trim(),
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);
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}
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if (mounted) {
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Navigator.of(context).pop();
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}
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} catch (e) {
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if (mounted) {
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setState(() => errorMessage = e.toString().replaceAll('Exception: ', ''));
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}
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} finally {
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if (mounted) {
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setState(() => isLoading = false);
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}
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}
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}
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@override
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void dispose() {
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usernameController.dispose();
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passwordController.dispose();
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inviterController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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final isDark = theme.brightness == Brightness.dark;
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return Scaffold(
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backgroundColor: isDark ? Colors.black : Colors.white,
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appBar: AppBar(
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title: Text(isRegisterMode ? '创建账号' : '欢迎回来'),
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centerTitle: true,
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elevation: 0,
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backgroundColor: Colors.transparent,
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),
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body: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: isDark
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? [Colors.black, Colors.grey[900]!]
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: [Colors.white, Colors.grey[50]!],
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),
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),
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alignment: Alignment.center,
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padding: const EdgeInsets.all(24),
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child: Transform.translate(
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offset: const Offset(0, -30),
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child: SingleChildScrollView(
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 400),
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child: Card(
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elevation: 8,
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shadowColor: _pinkColor.withOpacity(0.3),
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(20),
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),
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color: isDark ? Colors.grey[850] : Colors.white,
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 32),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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// 头像/图标区域 - 已修改为黑白粉主题
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Container(
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padding: const EdgeInsets.all(20),
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decoration: BoxDecoration(
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color: _pinkColor.withOpacity(0.15),
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shape: BoxShape.circle,
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),
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child: Icon(
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// 更换为更美观的人物头像类图标
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isRegisterMode ? Icons.person_add_rounded : Icons.person_rounded,
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size: 48,
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color: _pinkColor,
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),
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),
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const SizedBox(height: 24),
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Text(
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isRegisterMode ? '注册新账号' : '账号登录',
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style: TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.bold,
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color: isDark ? Colors.white : Colors.black87,
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),
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),
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const SizedBox(height: 8),
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Text(
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isRegisterMode ? '请填写以下信息' : '请输入您的凭证以继续',
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style: TextStyle(
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fontSize: 14,
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color: isDark ? Colors.grey[400] : Colors.grey[600],
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),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 24),
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if (errorMessage.isNotEmpty)
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Container(
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width: double.infinity,
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padding: const EdgeInsets.all(12),
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margin: const EdgeInsets.only(bottom: 16),
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decoration: BoxDecoration(
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color: Colors.red.withOpacity(0.1),
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borderRadius: BorderRadius.circular(8),
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border: Border.all(color: Colors.red.withOpacity(0.3)),
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),
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child: Row(
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children: [
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const Icon(Icons.error_outline, color: Colors.red, size: 20),
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const SizedBox(width: 8),
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Expanded(
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child: Text(
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errorMessage,
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style: const TextStyle(color: Colors.red, fontSize: 13),
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),
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),
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],
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),
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),
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// 用户名输入框
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TextField(
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controller: usernameController,
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enabled: !isLoading,
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decoration: InputDecoration(
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labelText: '用户名',
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prefixIcon: const Icon(Icons.person_outline, color: _pinkColor),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: _pinkColor.withOpacity(0.5)),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor, width: 2),
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),
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filled: true,
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fillColor: isDark ? Colors.grey[800] : Colors.grey[50],
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),
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),
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const SizedBox(height: 16),
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// 密码输入框
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TextField(
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controller: passwordController,
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obscureText: true,
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enabled: !isLoading,
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decoration: InputDecoration(
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labelText: isRegisterMode ? '设置密码' : '密码 / TOTP验证码',
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prefixIcon: const Icon(Icons.lock_outline, color: _pinkColor),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: _pinkColor.withOpacity(0.5)),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor, width: 2),
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),
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filled: true,
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fillColor: isDark ? Colors.grey[800] : Colors.grey[50],
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),
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),
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if (isRegisterMode) ...[
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const SizedBox(height: 16),
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TextField(
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controller: inviterController,
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enabled: !isLoading,
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decoration: InputDecoration(
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labelText: '邀请人 ID (可选)',
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prefixIcon: const Icon(Icons.card_giftcard_outlined, color: _pinkColor),
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border: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor),
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),
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enabledBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: BorderSide(color: _pinkColor.withOpacity(0.5)),
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),
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focusedBorder: OutlineInputBorder(
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borderRadius: BorderRadius.circular(12),
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borderSide: const BorderSide(color: _pinkColor, width: 2),
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),
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filled: true,
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fillColor: isDark ? Colors.grey[800] : Colors.grey[50],
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),
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),
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],
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const SizedBox(height: 24),
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// 登录/注册按钮
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SizedBox(
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width: double.infinity,
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height: 50,
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child: ElevatedButton(
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onPressed: isLoading ? null : submit,
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style: ElevatedButton.styleFrom(
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backgroundColor: _pinkColor,
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foregroundColor: Colors.black,
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elevation: 2,
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shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(12),
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),
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),
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child: 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>(Colors.black),
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),
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)
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: Text(
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isRegisterMode ? '立即注册' : '登录',
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style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
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),
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),
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),
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const SizedBox(height: 16),
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// 切换登录/注册
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TextButton(
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onPressed: isLoading
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? null
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: () {
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setState(() {
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isRegisterMode = !isRegisterMode;
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errorMessage = '';
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});
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},
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child: Text(
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isRegisterMode
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? '已有账号？去登录'
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: '没有账号？去注册',
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style: const TextStyle(
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color: _pinkColor,
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fontWeight: FontWeight.w500,
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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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} |