// tablet_pages_golden_test.dart — iPad/tablet 整页 golden（连接/节点/统计/账户）
//
// 用 debugDefaultTargetPlatformOverride=iOS + 1180×820 surface 让 context.formFactor
// 判定为 tablet（宽 ≥900），渲染 TabletShell 各页，对照 design/ui_kits/tablet/tabapp.jsx
// 像素基准做保真校准 / 回归闸。注入演示数据(节点/用量/账户)让网格与柱图有内容；
// 覆盖矩阵 = 四视图 × {light,dark} × {zh,en}。生成基准：flutter test --update-goldens。
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:pangolin_vpn/bridge/vpn_bridge_mock.dart';
import 'package:pangolin_vpn/bridge/vpn_bridge_provider.dart';
import 'package:pangolin_vpn/l10n/app_text.dart';
import 'package:pangolin_vpn/models/device_usage.dart';
import 'package:pangolin_vpn/models/me.dart';
import 'package:pangolin_vpn/models/node.dart';
import 'package:pangolin_vpn/models/usage_point.dart';
import 'package:pangolin_vpn/pangolin_theme.dart';
import 'package:pangolin_vpn/services/token_store.dart';
import 'package:pangolin_vpn/shell/home_shell.dart';
import 'package:pangolin_vpn/shell/tablet_shell.dart';
import 'package:pangolin_vpn/state/account_providers.dart';
import 'package:pangolin_vpn/state/app_providers.dart';
import 'package:pangolin_vpn/state/auth_provider.dart';
import 'package:pangolin_vpn/state/navigation_provider.dart';
import 'package:pangolin_vpn/state/nodes_provider.dart';

class _NullTokenStore implements TokenStore {
  const _NullTokenStore();
  @override
  Future<void> saveTokens({required String access, required String refresh}) async {}
  @override
  Future<String?> loadAccessToken() async => null;
  @override
  Future<String?> loadRefreshToken() async => null;
  @override
  Future<void> clear() async {}
  @override
  Future<void> markOnboarded() async {}
  @override
  Future<bool> isOnboarded() async => true;
  @override
  Future<void> saveLastEmail(String email) async {}
  @override
  Future<String?> loadLastEmail() async => null;
}

// ── 演示数据（让网格/柱图/账户有内容；不依赖登录态与网络）─────────────
const List<Node> _demoNodes = [
  Node(code: 'HK', nameZh: '香港 · 流媒体', nameEn: 'Hong Kong', ping: 18, tag: NodeTag.streaming, host: 'hk', port: 443),
  Node(code: 'TW', nameZh: '台北', nameEn: 'Taipei', ping: 28, host: 'tw', port: 443),
  Node(code: 'JP', nameZh: '东京', nameEn: 'Tokyo', ping: 32, host: 'jp', port: 443),
  Node(code: 'KR', nameZh: '首尔', nameEn: 'Seoul', ping: 38, host: 'kr', port: 443),
  Node(code: 'SG', nameZh: '新加坡', nameEn: 'Singapore', ping: 45, tag: NodeTag.p2p, host: 'sg', port: 443),
  Node(code: 'US', nameZh: '洛杉矶', nameEn: 'Los Angeles', ping: 120, host: 'us', port: 443),
];

const Me _demoMe = Me(
  email: 'me@pangolin.vpn',
  plan: 'free',
  devicesUsed: 2,
  devicesMax: 1,
  quotaTodayMin: 6,
  dataTodayGb: 1.2,
  weeklyGb: [2.1, 3.4, 1.8, 4.6, 5.2, 6.1, 3.0],
);

final List<UsagePoint> _demoUsage = List.generate(30, (i) {
  return UsagePoint(
    date: '2026-06-${(i + 1).toString().padLeft(2, '0')}',
    bytesUp: 120 * 1024 * 1024 + i * 7 * 1024 * 1024,
    bytesDown: 900 * 1024 * 1024 + i * 31 * 1024 * 1024,
    minutesUsed: 24 + (i % 5) * 11,
  );
});

// 分设备用量演示数据(统计页「设备明细」section)：三台设备,流量递减以验证占比条。
const List<DeviceUsage> _demoDeviceUsage = [
  DeviceUsage(uuid: 'd1', name: 'iPhone 15', platform: 'ios', bytesUp: 1500 * 1024 * 1024, bytesDown: 9800 * 1024 * 1024, minutesUsed: 312),
  DeviceUsage(uuid: 'd2', name: 'MacBook Pro', platform: 'macos', bytesUp: 800 * 1024 * 1024, bytesDown: 5200 * 1024 * 1024, minutesUsed: 188),
  DeviceUsage(uuid: 'd3', name: 'Pixel 8', platform: 'android', bytesUp: 200 * 1024 * 1024, bytesDown: 1400 * 1024 * 1024, minutesUsed: 64),
];

class _FakeNodesNotifier extends NodesNotifier {
  @override
  Future<List<Node>> build() async => _demoNodes;
}

class _FakeMeNotifier extends MeNotifier {
  @override
  Future<Me> build() async => _demoMe;
}

// 固定语言的 locale notifier:localeProvider 是 StateNotifierProvider<LocaleNotifier,
// AppLang>,override 须返回 LocaleNotifier(子类)。构造后直接钉死 state 为目标语言
// (prefs 在测试态为空,父类 _load() 不会改写)。
class _FixedLocale extends LocaleNotifier {
  _FixedLocale(AppLang lang) {
    state = lang;
  }
}

const Size _ipad = Size(1180, 820); // 对齐设计源 tabapp.jsx 内屏

Future<void> _shoot(
  WidgetTester tester,
  NavView view,
  String name, {
  bool settle = true,
  Brightness brightness = Brightness.light,
  AppLang lang = AppLang.zh,
}) async {
  debugDefaultTargetPlatformOverride = TargetPlatform.iOS;
  tester.view.physicalSize = _ipad;
  tester.view.devicePixelRatio = 1.0;
  addTearDown(tester.view.resetPhysicalSize);
  addTearDown(tester.view.resetDevicePixelRatio);
  try {
    await tester.pumpWidget(ProviderScope(
      overrides: [
        tokenStoreProvider.overrideWithValue(const _NullTokenStore()),
        vpnBridgeProvider.overrideWithValue(VpnBridgeMock()),
        navViewProvider.overrideWith((ref) => view),
        localeProvider.overrideWith((ref) => _FixedLocale(lang)),
        nodesProvider.overrideWith(_FakeNodesNotifier.new),
        meProvider.overrideWith(_FakeMeNotifier.new),
        usageProvider((days: 30, device: null)).overrideWith((ref) async => _demoUsage),
        deviceUsageProvider(30).overrideWith((ref) async => _demoDeviceUsage),
      ],
      child: MaterialApp(
        debugShowCheckedModeBanner: false,
        theme: brightness == Brightness.dark ? PangolinTheme.dark : PangolinTheme.light,
        home: const HomeShell(),
      ),
    ));
    if (settle) {
      await tester.pumpAndSettle();
    } else {
      await tester.pump();
      await tester.pump(const Duration(milliseconds: 300));
    }
    await expectLater(find.byType(TabletShell), matchesGoldenFile('goldens/$name.png'));
  } finally {
    debugDefaultTargetPlatformOverride = null;
  }
}

void main() {
  // 连接页 off 态含连接键虚线环静态，但稳妥起见用 settle:false（pump 固定帧）。
  for (final lang in const [AppLang.zh, AppLang.en]) {
    final l = lang == AppLang.zh ? 'zh' : 'en';
    testWidgets('tablet 连接·light·$l',
        (t) => _shoot(t, NavView.connect, 'tablet_connect_light_$l', settle: false, lang: lang));
    testWidgets('tablet 节点·light·$l',
        (t) => _shoot(t, NavView.servers, 'tablet_servers_light_$l', lang: lang));
    testWidgets('tablet 统计·light·$l',
        (t) => _shoot(t, NavView.stats, 'tablet_stats_light_$l', lang: lang));
    testWidgets('tablet 账户·light·$l',
        (t) => _shoot(t, NavView.account, 'tablet_account_light_$l', lang: lang));
  }

  // 深色覆盖（中文，验证暗主题各视图）。
  testWidgets('tablet 连接·dark·zh',
      (t) => _shoot(t, NavView.connect, 'tablet_connect_dark_zh', settle: false, brightness: Brightness.dark));
  testWidgets('tablet 节点·dark·zh',
      (t) => _shoot(t, NavView.servers, 'tablet_servers_dark_zh', brightness: Brightness.dark));
  testWidgets('tablet 统计·dark·zh',
      (t) => _shoot(t, NavView.stats, 'tablet_stats_dark_zh', brightness: Brightness.dark));
  testWidgets('tablet 账户·dark·zh',
      (t) => _shoot(t, NavView.account, 'tablet_account_dark_zh', brightness: Brightness.dark));
}