419 lines
15 KiB
Dart
419 lines
15 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter/foundation.dart' show defaultTargetPlatform, TargetPlatform;
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import 'package:fluwx/fluwx.dart';
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import 'package:tobias/tobias.dart';
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import 'package:google_sign_in/google_sign_in.dart';
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import 'package:sign_in_with_apple/sign_in_with_apple.dart';
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import '../../../../app/theme/app_colors.dart';
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import '../../../../app/theme/app_typography.dart';
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import '../../../../app/theme/app_spacing.dart';
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import '../../../../shared/widgets/genex_button.dart';
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import '../../../../app/i18n/app_localizations.dart';
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import '../../../../core/services/auth_service.dart';
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/// A1. 欢迎页 - 品牌展示 + 注册/登录入口
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///
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/// 平台差异（运行时判断）：
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/// Android: 微信 + 支付宝 + Google
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/// iOS: 微信 + 支付宝 + Google + Apple
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class WelcomePage extends StatefulWidget {
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const WelcomePage({super.key});
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@override
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State<WelcomePage> createState() => _WelcomePageState();
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}
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class _WelcomePageState extends State<WelcomePage> {
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bool _wechatLoading = false;
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bool _alipayLoading = false;
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bool _googleLoading = false;
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bool _appleLoading = false;
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final _googleSignIn = GoogleSignIn(scopes: ['email', 'profile']);
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@override
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void initState() {
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super.initState();
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// 监听微信授权回调（用户授权后，微信 App 返回 code）
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weChatResponseEventHandler.distinct().listen((res) {
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if (res is WXAuthResp && mounted) {
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_handleWechatAuthResp(res);
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}
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});
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}
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// ── 微信 ─────────────────────────────────────────────────────────────────
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Future<void> _onWechatTap() async {
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final installed = await isWeChatInstalled;
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if (!installed) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.wechatNotInstalled'))),
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);
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}
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return;
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}
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setState(() => _wechatLoading = true);
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await sendWeChatAuth(scope: 'snsapi_userinfo', state: 'genex_login');
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// 授权结果通过 weChatResponseEventHandler 异步回调
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}
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Future<void> _handleWechatAuthResp(WXAuthResp resp) async {
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setState(() => _wechatLoading = false);
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if (resp.errCode != 0 || resp.code == null) return;
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try {
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await AuthService.instance.loginByWechat(code: resp.code!);
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if (mounted) Navigator.pushReplacementNamed(context, '/main');
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.wechatLoginFailed'))),
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);
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}
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}
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}
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// ── 支付宝 ─────────────────────────────────────────────────────────────────
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// tobias 包使用方法：
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// isAliPayInstalled() → Future<bool>
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// aliPay(String orderStr) — 用于支付
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// 但 OAuth 授权用的是 Alipay.authCode(appId, scope) 返回 auth_code
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//
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// tobias v3.x API: aliPayAuth(appId, scope) → Future<Map>
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// 返回 {'resultStatus': '9000', 'memo': '', 'result': '...(含 auth_code)...'}
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// resultStatus: 9000=成功, 6001=取消, 4000=错误
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Future<void> _onAlipayTap() async {
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final installed = await isAliPayInstalled;
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if (!installed) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.alipayNotInstalled'))),
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);
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}
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return;
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}
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setState(() => _alipayLoading = true);
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try {
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// appId 与后端 ALIPAY_APP_ID 一致
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const alipayAppId = String.fromEnvironment('ALIPAY_APP_ID', defaultValue: '');
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final result = await aliPayAuth(alipayAppId, 'auth_user');
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final status = result['resultStatus']?.toString() ?? '';
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if (status != '9000') {
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// 用户取消或错误
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return;
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}
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// 从 result 字符串中解析 auth_code
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// result 格式: "auth_code=AP_xxxxxxxx&scope=auth_user&state=..."
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final resultStr = result['result']?.toString() ?? '';
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final authCode = _parseParam(resultStr, 'auth_code');
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if (authCode == null || authCode.isEmpty) {
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throw Exception('未获取到 auth_code');
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}
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await AuthService.instance.loginByAlipay(authCode: authCode);
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if (mounted) Navigator.pushReplacementNamed(context, '/main');
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.alipayLoginFailed'))),
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);
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}
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} finally {
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if (mounted) setState(() => _alipayLoading = false);
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}
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}
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/// 从 URL Query 格式字符串中提取参数值
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String? _parseParam(String str, String key) {
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final uri = Uri(query: str);
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return uri.queryParameters[key];
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}
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// ── Google ─────────────────────────────────────────────────────────────────
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Future<void> _onGoogleTap() async {
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setState(() => _googleLoading = true);
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try {
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final account = await _googleSignIn.signIn();
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if (account == null) return; // 用户取消
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final auth = await account.authentication;
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final idToken = auth.idToken;
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if (idToken == null) throw Exception('未获取到 ID Token');
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await AuthService.instance.loginByGoogle(idToken: idToken);
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if (mounted) Navigator.pushReplacementNamed(context, '/main');
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.googleLoginFailed'))),
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);
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}
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} finally {
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if (mounted) setState(() => _googleLoading = false);
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}
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}
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// ── Apple（仅 iOS）────────────────────────────────────────────────────────
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Future<void> _onAppleTap() async {
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setState(() => _appleLoading = true);
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try {
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final credential = await SignInWithApple.getAppleIDCredential(
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scopes: [
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AppleIDAuthorizationScopes.email,
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AppleIDAuthorizationScopes.fullName,
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],
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);
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final identityToken = credential.identityToken;
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if (identityToken == null) throw Exception('未获取到 Identity Token');
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// 拼接用户显示名（Apple 首次登录时提供，之后为 null）
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final displayName = [
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credential.givenName,
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credential.familyName,
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].where((s) => s != null && s.isNotEmpty).join(' ');
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await AuthService.instance.loginByApple(
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identityToken: identityToken,
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displayName: displayName.isNotEmpty ? displayName : null,
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);
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if (mounted) Navigator.pushReplacementNamed(context, '/main');
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text(context.t('welcome.appleLoginFailed'))),
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);
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}
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} finally {
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if (mounted) setState(() => _appleLoading = false);
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}
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}
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// ── Build ─────────────────────────────────────────────────────────────────
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@override
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Widget build(BuildContext context) {
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final isIos = defaultTargetPlatform == TargetPlatform.iOS;
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return Scaffold(
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body: SafeArea(
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 24),
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child: Column(
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children: [
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const Spacer(flex: 2),
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// Brand Logo
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ClipRRect(
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borderRadius: AppSpacing.borderRadiusXl,
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child: Image.asset(
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'assets/images/logo_icon.png',
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width: 80,
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height: 80,
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),
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),
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const SizedBox(height: 12),
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// Brand Name — 遵循 lockup 设计: "GEN" 深色 + "EX" 渐变
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Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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'GEN',
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style: AppTypography.displayLarge.copyWith(
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color: const Color(0xFF1A103A),
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fontWeight: FontWeight.w800,
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letterSpacing: -0.3,
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),
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),
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ShaderMask(
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shaderCallback: (bounds) => const LinearGradient(
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colors: [Color(0xFF9B8FFF), Color(0xFFB8ADFF)],
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).createShader(bounds),
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child: Text(
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'EX',
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style: AppTypography.displayLarge.copyWith(
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color: Colors.white,
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fontWeight: FontWeight.w800,
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letterSpacing: -0.3,
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),
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),
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),
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],
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),
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const SizedBox(height: 6),
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// Slogan
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Text(
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context.t('welcome.slogan'),
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style: AppTypography.bodyLarge.copyWith(
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color: AppColors.textSecondary,
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),
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),
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const Spacer(flex: 3),
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// Phone Register
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GenexButton(
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label: context.t('welcome.phoneRegister'),
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icon: Icons.phone_android_rounded,
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onPressed: () {
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Navigator.pushNamed(context, '/register');
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},
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),
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const SizedBox(height: 12),
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// Email Register
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GenexButton(
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label: context.t('welcome.emailRegister'),
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icon: Icons.email_outlined,
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variant: GenexButtonVariant.outline,
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onPressed: () {
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Navigator.pushNamed(context, '/register', arguments: {'isEmail': true});
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},
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),
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const SizedBox(height: 24),
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// Social Login Divider
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Row(
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children: [
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const Expanded(child: Divider(color: AppColors.border)),
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Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16),
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child: Text(context.t('welcome.otherLogin'), style: AppTypography.caption),
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),
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const Expanded(child: Divider(color: AppColors.border)),
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],
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),
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const SizedBox(height: 16),
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// Social Login Buttons
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// Android: 微信 + 支付宝 + Google
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// iOS: 微信 + 支付宝 + Google + Apple
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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_SocialLoginButton(
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icon: Icons.wechat,
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label: context.t('welcome.wechat'),
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color: const Color(0xFF07C160),
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loading: _wechatLoading,
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onTap: _onWechatTap,
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),
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const SizedBox(width: 20),
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_SocialLoginButton(
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// 支付宝官方蓝色
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icon: Icons.account_balance_wallet_outlined,
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label: context.t('welcome.alipay'),
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color: const Color(0xFF1677FF),
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loading: _alipayLoading,
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onTap: _onAlipayTap,
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),
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const SizedBox(width: 20),
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_SocialLoginButton(
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icon: Icons.g_mobiledata_rounded,
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label: 'Google',
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loading: _googleLoading,
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onTap: _onGoogleTap,
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),
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if (isIos) ...[
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const SizedBox(width: 20),
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_SocialLoginButton(
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icon: Icons.apple_rounded,
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label: 'Apple',
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loading: _appleLoading,
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onTap: _onAppleTap,
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),
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],
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],
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),
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const SizedBox(height: 32),
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// Already have account
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Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Text(context.t('welcome.hasAccount'), style: AppTypography.bodyMedium.copyWith(
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color: AppColors.textSecondary,
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)),
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GestureDetector(
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onTap: () {
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Navigator.pushNamed(context, '/login');
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},
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child: Text(context.t('welcome.login'), style: AppTypography.labelMedium.copyWith(
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color: AppColors.primary,
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)),
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),
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],
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),
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const SizedBox(height: 16),
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// Terms
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Text(
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context.t('welcome.agreement'),
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style: AppTypography.caption.copyWith(fontSize: 10),
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textAlign: TextAlign.center,
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),
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const SizedBox(height: 16),
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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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class _SocialLoginButton extends StatelessWidget {
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final IconData icon;
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final String label;
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final Color? color;
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final VoidCallback onTap;
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final bool loading;
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const _SocialLoginButton({
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required this.icon,
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required this.label,
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required this.onTap,
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this.color,
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this.loading = false,
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});
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTap: loading ? null : onTap,
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child: Column(
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children: [
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Container(
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width: 52,
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height: 52,
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decoration: BoxDecoration(
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color: color != null ? color!.withValues(alpha: 0.1) : AppColors.gray50,
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shape: BoxShape.circle,
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border: Border.all(color: color?.withValues(alpha: 0.3) ?? AppColors.border),
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),
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child: loading
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? Padding(
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padding: const EdgeInsets.all(14),
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: color ?? AppColors.textPrimary,
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),
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)
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: Icon(icon, size: 28, color: color ?? AppColors.textPrimary),
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),
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const SizedBox(height: 6),
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Text(label, style: AppTypography.caption),
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],
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),
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);
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}
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}
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