import 'package:flutter/cupertino.dart' show CupertinoPageTransitionsBuilder;
import 'package:flutter/foundation.dart'
    show LicenseEntryWithLineBreaks, LicenseRegistry;
import 'package:flutter/material.dart';
import 'package:flutter/services.dart' show rootBundle;

import 'app_info.dart';
import 'app_shell.dart';

void main() {
  _registerAppLicense();
  runApp(const KiriMemoApp());
}

/// 把 LICENSE（AGPL-3.0）注册进 Flutter 的许可清单，
/// 这样「关于 → 开源许可」里会和应用依赖的许可显示在一起。
void _registerAppLicense() {
  LicenseRegistry.addLicense(() async* {
    final String text = await rootBundle.loadString('LICENSE');
    yield LicenseEntryWithLineBreaks(<String>[appName], text);
  });
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: appName,
      debugShowCheckedModeBanner: false,
      theme: _theme(Brightness.light),
      darkTheme: _theme(Brightness.dark),
      home: const AppShell(),
    );
  }

  static ThemeData _theme(Brightness brightness) {
    return ThemeData(
      colorScheme: ColorScheme.fromSeed(
        seedColor: const Color(0xFF4C6EF5),
        brightness: brightness,
      ),
      // Flutter 3.47 起 Android 默认用 PredictiveBackPageTransitionsBuilder，
      // 配合 targetSdk 36（Android 15+ 默认开启预测式返回）会在单路由外壳里
      // 出现"预览走完直接退应用"的割裂感。这里显式换成无预测的 M3 水平
      // 滑入转场（FadeForwards），同时 AndroidManifest 里关掉了
      // enableOnBackInvokedCallback。
      pageTransitionsTheme: const PageTransitionsTheme(
        builders: <TargetPlatform, PageTransitionsBuilder>{
          TargetPlatform.android: FadeForwardsPageTransitionsBuilder(),
          TargetPlatform.iOS: CupertinoPageTransitionsBuilder(),
          TargetPlatform.macOS: CupertinoPageTransitionsBuilder(),
          TargetPlatform.linux: FadeForwardsPageTransitionsBuilder(),
          TargetPlatform.windows: FadeForwardsPageTransitionsBuilder(),
        },
      ),
    );
  }
}