flutter_paydemo/lib/main.dart

/// App 入口
///
/// 启动时完成：
/// 1. 微信 SDK 注册（fluwx registerApi + addSubscriber）
/// 2. Stripe 发布密钥初始化
/// 3. 国际化（中/英）、ScreenUtil 适配、EasyLoading 全局配置
library;

import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

import 'constants.dart';
import 'pages/home_page.dart';
import 'service/platform/stripe_flow.dart';
import 'service/platform/wechat_flow.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // 微信 SDK：注册 AppID + 订阅支付结果回调（Web 端为空实现，安全失败）
  try {
    await WechatFlow.instance.init();
    WechatFlow.instance.subscribe();
  } catch (e) {
    // 微信 SDK 初始化失败不阻塞启动（Web / 未配置 AppID 场景）
    debugPrint('微信 SDK 初始化失败（忽略）: $e');
  }

  // Stripe：发布密钥初始化（真实密钥由后端 createStripePayment 下发）
  StripeFlow.instance.init(kStripePublishableKey);

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    // ScreenUtil 设计稿尺寸（750 宽，对应常见移动端设计稿）
    return ScreenUtilInit(
      designSize: const Size(750, 1334),
      minTextAdapt: true,
      builder: (context, child) {
        return MaterialApp(
          title: 'flutter_paydemo',
          debugShowCheckedModeBanner: false,
          theme: ThemeData(
            colorScheme: ColorScheme.fromSeed(seedColor: Colors.indigo),
            useMaterial3: true,
          ),
          localizationsDelegates: const [
            GlobalMaterialLocalizations.delegate,
            GlobalWidgetsLocalizations.delegate,
            GlobalCupertinoLocalizations.delegate,
          ],
          supportedLocales: const [
            Locale('zh', 'CN'),
            Locale('en', 'US'),
          ],
          locale: const Locale('zh', 'CN'),
          home: child ?? const HomePage(),
          // EasyLoading 全局配置
          builder: EasyLoading.init(),
        );
      },
    );
  }
}