import 'package:fl_clash/common/app_ports.dart';
import 'package:fl_clash/common/cidr.dart';
import 'package:fl_clash/common/constant.dart';
import 'package:fl_clash/common/system.dart';
import 'package:fl_clash/enum/enum.dart';
import 'package:fl_clash/l10n/l10n.dart';
import 'package:fl_clash/models/models.dart';
import 'package:fl_clash/providers/app.dart';
import 'package:fl_clash/providers/config.dart';
import 'package:fl_clash/providers/database.dart';
import 'package:fl_clash/providers/state.dart';
import 'package:fl_clash/ui/color.dart';
import 'package:fl_clash/views/navigation.dart';
import 'package:material_ui/material_ui.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:riverpod/riverpod.dart';

import '../helpers/test_profiles.dart';

void main() {
  late ProviderContainer container;

  setUp(() {
    navigationPort = navigation;
    addTearDown(() => navigationPort = null);
    container = ProviderContainer(
      overrides: [profilesProvider.overrideWith(TestProfiles.new)],
    );
  });

  tearDown(() {
    container.dispose();
  });

  test('group derivation sanitizes runtime state and respects clash mode', () {
    final groups = [
      const Group(
        name: 'Visible',
        type: GroupType.Selector,
        now: 'Selected',
        hidden: false,
        all: [Proxy(name: 'Selected', type: 'Direct', now: 'runtime')],
      ),
      const Group(name: 'Hidden', type: GroupType.Selector, hidden: true),
      Group(
        name: GroupName.GLOBAL.name,
        type: GroupType.Selector,
        hidden: true,
      ),
    ];
    container.read(groupsProvider.notifier).update((_) => groups);
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));

    final ruleGroups = container.read(currentGroupsStateProvider).value;
    expect(ruleGroups.map((group) => group.name), ['Visible']);
    expect(ruleGroups.single.now, isEmpty);
    expect(ruleGroups.single.all.single.now, isEmpty);

    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.global));
    expect(container.read(currentGroupsStateProvider).value, hasLength(3));

    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.direct));
    expect(container.read(currentGroupsStateProvider).value, isEmpty);
  });

  test('a GLOBAL group of the profile\'s own shows in rule mode', () {
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => [
            Group(
              name: GroupName.GLOBAL.name,
              type: GroupType.Selector,
              hidden: false,
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));

    expect(
      container
          .read(currentGroupsStateProvider)
          .value
          .map((group) => group.name),
      [GroupName.GLOBAL.name],
    );
  });

  test('group derivation ignores a change of selection only', () {
    Group group(String now, String nestedNow) => Group(
      name: 'Visible',
      type: GroupType.Selector,
      now: now,
      hidden: false,
      all: [
        const Proxy(name: 'Node', type: 'Direct'),
        Proxy(name: 'Auto', type: 'URLTest', now: nestedNow),
      ],
    );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container.read(groupsProvider.notifier).update((_) => [group('Node', 'a')]);
    var notified = 0;
    container.listen(currentGroupsStateProvider, (_, _) => notified++);

    container.read(groupsProvider.notifier).update((_) => [group('Auto', 'b')]);
    container.read(currentGroupsStateProvider);

    expect(notified, 0);
  });

  test('hiding timed-out nodes leaves the rest of the group alone', () {
    const testUrl = 'https://default.test';
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => [
            const Group(
              name: 'Visible',
              type: GroupType.Selector,
              hidden: false,
              all: [
                Proxy(name: 'fast', type: 'ss'),
                Proxy(name: 'slow', type: 'ss'),
              ],
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(testUrl: testUrl));
    container
        .read(delayDataSourceProvider.notifier)
        .setDelay(const Delay(url: testUrl, name: 'slow', value: -1));

    expect(
      container.read(visibleGroupsStateProvider).value.single.all,
      hasLength(2),
    );

    container
        .read(proxiesStyleSettingProvider.notifier)
        .update((state) => state.copyWith(hideTimeoutProxies: true));
    expect(
      container
          .read(visibleGroupsStateProvider)
          .value
          .single
          .all
          .map((proxy) => proxy.name),
      ['fast'],
    );
  });

  test('hidden timed-out nodes follow test batches and cleared delays', () {
    const testUrl = 'https://default.test';
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(testUrl: testUrl));
    container
        .read(proxiesStyleSettingProvider.notifier)
        .update((state) => state.copyWith(hideTimeoutProxies: true));
    void setGroup(String now) {
      container
          .read(groupsProvider.notifier)
          .update(
            (_) => [
              Group(
                name: 'Visible',
                type: GroupType.Selector,
                now: now,
                hidden: false,
                all: const [
                  Proxy(name: 'a', type: 'ss'),
                  Proxy(name: 'b', type: 'ss'),
                  Proxy(name: 'c', type: 'ss'),
                ],
              ),
            ],
          );
    }

    Iterable<String> visibleNames() => container
        .read(visibleGroupsStateProvider)
        .value
        .single
        .all
        .map((proxy) => proxy.name);

    setGroup('a');
    expect(visibleNames(), ['a', 'b', 'c']);

    container
        .read(delayDataSourceProvider.notifier)
        .setDelay(const Delay(url: testUrl, name: 'b', value: -1));
    setGroup('c');
    expect(visibleNames(), ['a', 'b', 'c']);

    container.read(sortNumProvider.notifier).add();
    expect(visibleNames(), ['a', 'c']);

    container
        .read(delayDataSourceProvider.notifier)
        .setDelay(const Delay(url: testUrl, name: 'c', value: -1));
    setGroup('a');
    expect(visibleNames(), ['a', 'c']);

    container.read(delayDataSourceProvider.notifier).value = {};
    expect(visibleNames(), ['a', 'b', 'c']);
  });

  test('hiding timed-out nodes keeps the core pick, never empties a group', () {
    const testUrl = 'https://default.test';
    const nodes = [Proxy(name: 'a', type: 'ss'), Proxy(name: 'b', type: 'ss')];
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => [
            const Group(
              name: 'Auto',
              type: GroupType.URLTest,
              now: 'b',
              hidden: false,
              all: nodes,
            ),
            const Group(
              name: 'Balance',
              type: GroupType.LoadBalance,
              hidden: false,
              all: nodes,
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(testUrl: testUrl));
    for (final node in nodes) {
      container
          .read(delayDataSourceProvider.notifier)
          .setDelay(Delay(url: testUrl, name: node.name, value: -1));
    }
    container
        .read(proxiesStyleSettingProvider.notifier)
        .update((state) => state.copyWith(hideTimeoutProxies: true));

    final groups = container.read(visibleGroupsStateProvider).value;
    expect(groups.first.all.map((proxy) => proxy.name), ['b']);
    expect(groups.last.all.map((proxy) => proxy.name), ['a', 'b']);
  });

  test('hiding timed-out nodes keeps a group listed in another', () {
    const testUrl = 'https://default.test';
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => const [
            Group(
              name: 'Proxy',
              type: GroupType.Selector,
              now: 'a',
              hidden: false,
              all: [
                Proxy(name: 'a', type: 'ss'),
                Proxy(name: 'HK', type: 'Selector'),
              ],
            ),
            Group(
              name: 'HK',
              type: GroupType.Selector,
              now: 'b',
              hidden: true,
              all: [Proxy(name: 'b', type: 'ss')],
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(testUrl: testUrl));
    container
        .read(delayDataSourceProvider.notifier)
        .setDelay(const Delay(url: testUrl, name: 'b', value: -1));
    container
        .read(proxiesStyleSettingProvider.notifier)
        .update((state) => state.copyWith(hideTimeoutProxies: true));

    expect(
      container
          .read(visibleGroupsStateProvider)
          .value
          .single
          .all
          .map((proxy) => proxy.name),
      ['a', 'HK'],
    );
  });

  test('a search whose matches all timed out keeps them and their group', () {
    const testUrl = 'https://default.test';
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => const [
            Group(
              name: 'Proxy',
              type: GroupType.Selector,
              now: 'JP',
              hidden: false,
              all: [
                Proxy(name: 'HK 01', type: 'ss'),
                Proxy(name: 'HK 02', type: 'ss'),
                Proxy(name: 'JP', type: 'ss'),
              ],
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));
    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(testUrl: testUrl));
    container
        .read(proxiesStyleSettingProvider.notifier)
        .update((state) => state.copyWith(hideTimeoutProxies: true));
    final delays = container.read(delayDataSourceProvider.notifier);
    delays.setDelay(const Delay(url: testUrl, name: 'HK 01', value: -1));
    delays.setDelay(const Delay(url: testUrl, name: 'HK 02', value: -1));

    List<String> names(String query) => [
      for (final proxy
          in container.read(filterGroupsStateProvider(query)).value.single.all)
        proxy.name,
    ];

    expect(names(''), ['JP']);
    expect(names('hk'), ['HK 01', 'HK 02']);

    delays.setDelay(const Delay(url: testUrl, name: 'HK 02', value: 80));
    container.read(sortNumProvider.notifier).add();
    expect(names('hk'), ['HK 02']);
  });

  test('navigation providers select items for width and current page', () {
    container
        .read(viewSizeProvider.notifier)
        .update((_) => Size(maxMobileWidth.toDouble(), 800));
    final mobile = container.read(currentNavigationItemsStateProvider).value;
    expect(
      mobile.map((item) => item.label),
      containsAll([PageLabel.dashboard, PageLabel.profiles, PageLabel.tools]),
    );
    expect(
      mobile.map((item) => item.label),
      isNot(contains(PageLabel.connections)),
    );

    container
        .read(viewSizeProvider.notifier)
        .update((_) => const Size(1200, 800));
    container
        .read(currentPageLabelProvider.notifier)
        .toPage(PageLabel.connections);
    final desktop = container.read(navigationStateProvider);
    expect(desktop.viewMode, ViewMode.desktop);
    expect(desktop.currentIndex, greaterThan(0));
    expect(
      desktop.navigationItems[desktop.currentIndex].label,
      PageLabel.connections,
    );

    container
        .read(currentPageLabelProvider.notifier)
        .toPage(PageLabel.resources);
    expect(container.read(navigationStateProvider).currentIndex, 0);
  });

  test('layout and page state providers compose their dependencies', () {
    final profile = Profile.normal(label: 'Primary');
    _profiles(container).replace([profile]);
    container.read(currentProfileIdProvider.notifier).update((_) => profile.id);
    container
        .read(viewSizeProvider.notifier)
        .update((_) => const Size(1000, 800));
    container.read(sideWidthProvider.notifier).update((_) => 200);

    final profiles = container.read(profilesStateProvider);
    expect(profiles.profiles.single.label, 'Primary');
    expect(profiles.currentProfileId, profile.id);

    final dashboard = container.read(dashboardStateProvider);
    expect(dashboard.dashboardWidgets, isNotEmpty);
  });

  test(
    'proxy list and tab providers filter groups and preserve selections',
    () {
      final profile = Profile.normal().copyWith(
        currentGroupName: 'Group B',
        unfoldSet: {'Group A'},
      );
      final groups = [
        const Group(
          name: 'Group A',
          type: GroupType.Selector,
          hidden: false,
          all: [
            Proxy(name: 'Alpha', type: 'Direct'),
            Proxy(name: 'Beta', type: 'Direct'),
          ],
        ),
        const Group(
          name: 'Group B',
          type: GroupType.URLTest,
          hidden: false,
          testUrl: 'https://group.test',
          all: [Proxy(name: 'Gamma', type: 'Direct')],
        ),
      ];
      _profiles(container).replace([profile]);
      container
          .read(currentProfileIdProvider.notifier)
          .update((_) => profile.id);
      container.read(groupsProvider.notifier).update((_) => groups);
      container
          .read(patchClashConfigProvider.notifier)
          .update((state) => state.copyWith(mode: Mode.rule));
      container
          .read(viewSizeProvider.notifier)
          .update((_) => const Size(900, 800));

      expect(container.read(filterGroupsStateProvider('')).value, hasLength(2));
      final filtered = container.read(filterGroupsStateProvider('ALP')).value;
      expect(filtered, hasLength(1));
      expect(filtered.single.all.single.name, 'Alpha');

      container
          .read(queryProvider(QueryTag.proxies).notifier)
          .update((_) => 'ga');
      final list = container.read(proxiesListStateProvider);
      expect(list.groups.single.name, 'Group B');
      expect(list.currentUnfoldSet, {'Group A'});

      final tab = container.read(proxiesTabStateProvider);
      expect(tab.currentGroupName, 'Group B');
      expect(tab.groups.single.all.single.name, 'Gamma');
      final controller = container.read(proxiesTabControllerStateProvider);
      expect(controller.groupNames, ['Group B']);
      expect(controller.currentGroupName, 'Group B');
    },
  );

  test('proxy search matches the proxy type and needs every term', () {
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => const [
            Group(
              name: 'Group A',
              type: GroupType.Selector,
              hidden: false,
              all: [
                Proxy(name: 'HK 01', type: 'Vmess'),
                Proxy(name: 'HK 02', type: 'Trojan'),
                Proxy(name: 'JP 01', type: 'Trojan'),
              ],
            ),
          ],
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(mode: Mode.rule));

    List<String> names(String query) => [
      for (final proxy
          in container.read(filterGroupsStateProvider(query)).value.single.all)
        proxy.name,
    ];

    expect(names('trojan'), ['HK 02', 'JP 01']);
    expect(names('hk TROJAN'), ['HK 02']);
    expect(container.read(filterGroupsStateProvider('hk jp')).value, isEmpty);
  });

  test('runtime, VPN, tray, and DNS states follow live state', () async {
    container
        .read(runTimeProvider.notifier)
        .update((_) => DateTime(2026).millisecondsSinceEpoch);
    container
        .read(networkSettingProvider.notifier)
        .update(
          (state) => state.copyWith(
            systemProxy: false,
            bypassDomain: const ['localhost'],
            autoSetSystemDns: true,
          ),
        );
    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            mixedPort: 8899,
            mode: Mode.global,
            tun: state.tun.copyWith(enable: true),
          ),
        );
    expect(container.read(shouldPatchSystemDnsProvider), isFalse);

    container
        .read(authorizedTunEnableProvider.notifier)
        .update((_) => TunAuthorizationState.authorized);

    final proxy = container.read(proxyStateProvider);
    expect(proxy.isStart, isTrue);
    expect(proxy.systemProxy, isFalse);
    expect(proxy.bassDomain, ['localhost']);
    expect(proxy.port, 8899);
    expect(container.read(isStartProvider), isTrue);

    final tray = container.read(trayStateProvider);
    expect(tray.mode, Mode.global);
    expect(tray.port, 8899);
    expect(tray.tunEnable, isTrue);
    expect(tray.isStart, isTrue);

    final vpn = await container.read(vpnOptionsProvider.future);
    expect(vpn.stack, container.read(patchClashConfigProvider).tun.stack.name);
    expect(vpn.port, 8899);
    expect(vpn.bypassDomain, ['localhost']);

    expect(container.read(shouldPatchSystemDnsProvider), isTrue);

    container
        .read(networkSettingProvider.notifier)
        .update((state) => state.copyWith(autoSetSystemDns: false));
    expect(container.read(shouldPatchSystemDnsProvider), isFalse);
    container
        .read(networkSettingProvider.notifier)
        .update((state) => state.copyWith(autoSetSystemDns: true));

    container
        .read(authorizedTunEnableProvider.notifier)
        .update((_) => TunAuthorizationState.unauthorized);
    expect(container.read(shouldPatchSystemDnsProvider), isFalse);

    container.read(excludeSSIDsProvider.notifier).update((_) => ['Office']);
    container.read(currentSSIDProvider.notifier).update((_) => 'Office');
    expect(container.read(suspendProvider), isTrue);
    expect(container.read(proxyStateProvider).isStart, isFalse);
  });

  test('safe mode keeps every host integration off', () async {
    await AppLocalizations.load(const Locale('en'));
    final scoped = ProviderContainer(
      overrides: [
        profilesProvider.overrideWith(TestProfiles.new),
        safeModeProvider.overrideWithValue(true),
      ],
    );
    addTearDown(scoped.dispose);
    scoped.listen(sharedStateProvider, (_, _) {});
    scoped.read(runTimeProvider.notifier).update((_) => 1);
    scoped
        .read(networkSettingProvider.notifier)
        .update(
          (state) => state.copyWith(systemProxy: true, autoSetSystemDns: true),
        );
    scoped
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(tun: state.tun.copyWith(enable: true)),
        );
    scoped
        .read(authorizedTunEnableProvider.notifier)
        .update((_) => TunAuthorizationState.authorized);
    scoped
        .read(vpnSettingProvider.notifier)
        .update((state) => state.copyWith(enable: true, systemProxy: true));

    scoped
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(showTrayTitle: true));
    scoped.listen(trayStateProvider, (_, _) {});
    scoped
        .read(hotKeyActionsProvider.notifier)
        .update(
          (_) => const [
            HotKeyAction(
              action: HotAction.view,
              key: 1,
              modifiers: {KeyboardModifier.control},
            ),
          ],
        );

    final tray = scoped.read(trayStateProvider);
    expect(tray.safeMode, isTrue);
    expect(tray.showTrayTitle, isTrue);
    expect(tray.hotKeys.keys, [HotAction.view]);
    expect(scoped.read(trayTitleStateProvider).showTrayTitle, isTrue);
    expect(scoped.read(shouldPatchSystemDnsProvider), isFalse);
    await scoped.read(vpnOptionsProvider.future);
    final vpnOptions = scoped.read(sharedStateProvider).vpnOptions!;
    expect(vpnOptions.enable, isFalse);
    expect(vpnOptions.systemProxy, isFalse);
  });

  test('selection and delay providers resolve groups and profile state', () {
    final profile = Profile.normal().copyWith(
      selectedMap: {'Selector': 'Leaf'},
      unfoldSet: {'Selector'},
    );
    const groups = [
      Group(
        name: 'Selector',
        type: GroupType.Selector,
        all: [Proxy(name: 'Leaf', type: 'Direct')],
      ),
    ];
    _profiles(container).replace([profile]);
    container.read(currentProfileIdProvider.notifier).update((_) => profile.id);
    container.read(groupsProvider.notifier).update((_) => groups);
    container
        .read(delayDataSourceProvider.notifier)
        .setDelay(
          const Delay(
            name: 'Leaf',
            url: 'https://www.gstatic.com/generate_204',
            value: 42,
          ),
        );

    expect(container.read(selectedMapProvider), {'Selector': 'Leaf'});
    expect(container.read(unfoldSetProvider), {'Selector'});
    expect(container.read(proxyNameProvider('Selector')), 'Leaf');
    expect(container.read(selectedProxyNameProvider('Selector')), 'Leaf');
    expect(
      container.read(realSelectedProxyStateProvider('Selector')).proxyName,
      'Leaf',
    );
    expect(container.read(delayProvider(proxyName: 'Selector')), 42);
  });

  test('tray delays follow the listed groups and their test URLs', () {
    const probeUrl = 'https://probe.example/204';
    container
        .read(groupsProvider.notifier)
        .update(
          (_) => const [
            Group(
              name: 'Selector',
              type: GroupType.Selector,
              hidden: false,
              all: [
                Proxy(name: 'Leaf', type: 'Direct'),
                Proxy(name: 'Idle', type: 'Direct'),
              ],
            ),
            Group(
              name: 'Probe',
              type: GroupType.URLTest,
              hidden: false,
              testUrl: probeUrl,
              all: [Proxy(name: 'Leaf', type: 'Direct')],
            ),
          ],
        );
    container.read(delayDataSourceProvider.notifier)
      ..setDelay(const Delay(name: 'Leaf', url: defaultTestUrl, value: 42))
      ..setDelay(const Delay(name: 'Leaf', url: probeUrl, value: -1));

    expect(container.read(trayDelaysProvider), {
      'Selector': {'Leaf': 42},
      'Probe': {'Leaf': -1},
    });
  });

  test('tray hotkeys leave out bindings that cannot fire', () {
    container.listen(trayStateProvider, (_, _) {});
    container
        .read(hotKeyActionsProvider.notifier)
        .update(
          (_) => const [
            HotKeyAction(
              action: HotAction.view,
              key: 1,
              modifiers: {KeyboardModifier.control},
            ),
            HotKeyAction(
              action: HotAction.start,
              key: 2,
              modifiers: {KeyboardModifier.capsLock},
            ),
            HotKeyAction(
              action: HotAction.tun,
              key: 3,
              modifiers: {KeyboardModifier.control},
            ),
          ],
        );
    container.read(hotKeyFailuresProvider.notifier).value = {
      HotAction.tun: 'taken',
    };

    expect(container.read(trayStateProvider).hotKeys.keys, [HotAction.view]);
  });

  test('theme and simple derived providers cover fallback branches', () {
    expect(container.read(currentBrightnessProvider), Brightness.dark);
    container
        .read(systemBrightnessProvider.notifier)
        .update((_) => Brightness.light);
    container
        .read(themeSettingProvider.notifier)
        .update((state) => state.copyWith(themeMode: ThemeMode.system));
    expect(container.read(currentBrightnessProvider), Brightness.light);

    final fallback = container.read(
      genColorSchemeProvider(Brightness.light, ignoreConfig: true),
    );
    expect(fallback.brightness, Brightness.light);
    final explicit = container.read(
      genColorSchemeProvider(Brightness.dark, color: Colors.purple),
    );
    expect(explicit.brightness, Brightness.dark);

    expect(
      container.read(realTestUrlProvider('https://custom.test')),
      'https://custom.test',
    );
  });

  test('a color scheme outlives the provider that generated it', () {
    final provider = genColorSchemeProvider(
      Brightness.dark,
      color: Colors.teal,
    );
    final first = container.read(provider);
    container.invalidate(provider);

    expect(container.read(provider), same(first));

    container
        .read(themeSettingProvider.notifier)
        .update((state) => state.copyWith(colorStyle: ColorStyle.soft));
    expect(container.read(provider), isNot(same(first)));
  });

  test('hotkey, profile, and extend providers expose defaults', () {
    const action = HotKeyAction(
      action: HotAction.start,
      key: 1,
      modifiers: {KeyboardModifier.control},
    );
    container.read(hotKeyActionsProvider.notifier).update((_) => [action]);
    expect(container.read(getHotKeyActionProvider(HotAction.start)), action);
    expect(
      container.read(getHotKeyActionProvider(HotAction.tun)).action,
      HotAction.tun,
    );

    final profile = Profile.normal().copyWith(extendType: ExtendType.script);
    _profiles(container).replace([profile]);
    expect(container.read(profileProvider(profile.id)), profile);
    expect(container.read(extendTypeProvider(profile.id)), ExtendType.script);
    expect(container.read(extendTypeProvider(-1)), ExtendType.standard);

    expect(
      container.read(accessControlStateProvider),
      const AccessControlProps(),
    );
  });

  test(
    'a custom profile is no proxy provider and has no config file',
    () async {
      final subscription = Profile.normal(label: 'Sub');
      final file = Profile.normal(label: 'File');
      final custom = Profile.custom(label: 'Mine');
      _profiles(container).replace([subscription, file, custom]);

      expect(container.read(profileProvidersProvider), {
        'Sub': subscription.id,
        'File': file.id,
      });
      expect(
        await container.read(clashConfigProvider(custom.id).future),
        const ClashConfig(),
      );
    },
  );

  test('shared state hands the VPN service the resolved route list', () async {
    await AppLocalizations.load(const Locale('en'));
    container.listen(sharedStateProvider, (_, _) {});
    container
        .read(networkSettingProvider.notifier)
        .update((state) => state.copyWith(bypassPrivateRoute: false));
    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            tun: state.tun.copyWith(routeAddress: const ['10.0.0.0/8']),
          ),
        );
    await container.read(vpnOptionsProvider.future);
    expect(container.read(sharedStateProvider).vpnOptions?.routeAddress, [
      '10.0.0.0/8',
      '::/0',
    ]);

    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(tun: state.tun.copyWith(routeAddress: [])),
        );
    container
        .read(networkSettingProvider.notifier)
        .update((state) => state.copyWith(bypassPrivateRoute: true));
    await container.read(vpnOptionsProvider.future);
    expect(
      container.read(sharedStateProvider).vpnOptions?.routeAddress,
      subtractCidrs(const [], privateRouteAddress, wholeWhenEmpty: true),
    );
  });

  test('only the route lists recompute the VPN routes', () async {
    final computed = <List<String>?>[];
    container.listen(
      vpnRouteAddressProvider,
      (_, next) => computed.add(next.value),
      fireImmediately: true,
    );
    await container.read(vpnRouteAddressProvider.future);
    computed.clear();

    container
        .read(vpnSettingProvider.notifier)
        .update((state) => state.copyWith(ipv6: !state.ipv6));
    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            mixedPort: state.mixedPort + 1,
            tun: state.tun.copyWith(mtu: state.tun.mtu - 1),
          ),
        );
    await container.read(vpnOptionsProvider.future);
    expect(computed, isEmpty);

    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            tun: state.tun.copyWith(routeExcludeAddress: ['10.0.0.0/8']),
          ),
        );
    await container.read(vpnRouteAddressProvider.future);
    expect(computed.last, isNot(contains('0.0.0.0/0')));
  });

  test('shared state keeps the last routes while new ones compute', () async {
    await AppLocalizations.load(const Locale('en'));
    container.listen(sharedStateProvider, (_, _) {});
    container
        .read(networkSettingProvider.notifier)
        .update((state) => state.copyWith(bypassPrivateRoute: false));
    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            tun: state.tun.copyWith(routeAddress: const ['10.0.0.0/8']),
          ),
        );
    await container.read(vpnOptionsProvider.future);

    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            tun: state.tun.copyWith(routeAddress: const ['172.16.0.0/12']),
          ),
        );
    expect(container.read(sharedStateProvider).vpnOptions?.routeAddress, [
      '10.0.0.0/8',
      '::/0',
    ]);

    await container.read(vpnOptionsProvider.future);
    expect(container.read(sharedStateProvider).vpnOptions?.routeAddress, [
      '172.16.0.0/12',
      '::/0',
    ]);
  });

  // VpnService.setHttpProxy cannot carry credentials.
  test('local authentication withholds the VPN system proxy', () async {
    await AppLocalizations.load(const Locale('en'));
    container.listen(sharedStateProvider, (_, _) {});
    await container.read(vpnOptionsProvider.future);
    expect(container.read(sharedStateProvider).vpnOptions?.systemProxy, true);

    container
        .read(networkSettingProvider.notifier)
        .update(
          (state) => state.copyWith(
            authentication: const AuthenticationProps(
              enable: true,
              username: 'user',
              password: 'pass',
            ),
          ),
        );
    await container.read(vpnOptionsProvider.future);
    expect(container.read(sharedStateProvider).vpnOptions?.systemProxy, false);
    expect(container.read(updateParamsProvider).authentication, ['user:pass']);

    container
        .read(networkSettingProvider.notifier)
        .update(
          (state) => state.copyWith(
            authentication: const AuthenticationProps(enable: false),
          ),
        );
    await container.read(vpnOptionsProvider.future);
    expect(container.read(sharedStateProvider).vpnOptions?.systemProxy, true);
    expect(container.read(updateParamsProvider).authentication, isEmpty);
  });

  test('the setup patch changes only with what a re-apply carries', () {
    container.listen(setupPatchProvider, (_, _) {});
    final initial = container.read(setupPatchProvider);

    container
        .read(patchClashConfigProvider.notifier)
        .update(
          (state) => state.copyWith(
            mode: Mode.global,
            mixedPort: 8899,
            tun: state.tun.copyWith(enable: true),
          ),
        );
    expect(container.read(setupPatchProvider), initial);

    container
        .read(patchClashConfigProvider.notifier)
        .update((state) => state.copyWith(hosts: const {'a.test': '1.1.1.1'}));
    final withHosts = container.read(setupPatchProvider);
    expect(withHosts, isNot(initial));

    container
        .read(networkSettingProvider.notifier)
        .update(
          (state) => state.copyWith(appendSystemDns: !state.appendSystemDns),
        );
    final withSystemDns = container.read(setupPatchProvider);
    expect(withSystemDns, isNot(withHosts));

    container
        .read(networkSettingProvider.notifier)
        .update(
          (state) =>
              state.copyWith(bypassPrivateRoute: !state.bypassPrivateRoute),
        );
    expect(
      container.read(setupPatchProvider),
      system.isDesktop ? isNot(withSystemDns) : withSystemDns,
    );
  });

  test('shared state carries the notification stop action switch', () async {
    await AppLocalizations.load(const Locale('en'));
    container.listen(sharedStateProvider, (_, _) {});
    expect(container.read(sharedStateProvider).showStopAction, true);

    container
        .read(appSettingProvider.notifier)
        .update((state) => state.copyWith(showNotificationStopAction: false));
    expect(container.read(sharedStateProvider).showStopAction, false);
  });

  test('shared state follows the locale whose messages are loaded', () async {
    container.listen(sharedStateProvider, (_, _) {});
    await AppLocalizations.load(const Locale('en'));
    container.read(loadedLocaleProvider.notifier).value = const Locale('en');
    final en = container.read(sharedStateProvider);

    await AppLocalizations.load(const Locale('zh', 'CN'));
    addTearDown(() => AppLocalizations.load(const Locale('en')));
    expect(container.read(sharedStateProvider).stopText, en.stopText);

    container.read(loadedLocaleProvider.notifier).value = const Locale(
      'zh',
      'CN',
    );
    final zh = container.read(sharedStateProvider);
    expect(zh.stopText, isNot(en.stopText));
    expect(zh.stopTip, isNot(en.stopTip));
    expect(zh.startTip, isNot(en.startTip));
  });
}

TestProfiles _profiles(ProviderContainer container) {
  return container.read(profilesProvider.notifier) as TestProfiles;
}