/// 服务端上传历史页 widget 测试（UI-03 页面 16；A19 语义）。
///
/// 覆盖：标题/副标题（跨设备口径）与 A19 数据源区分横幅、行内容
/// （clientTaskId 短码/KB/状态徽章/时间 · 设备来源安全回退）、相册与
/// 日期客户端筛选、下拉刷新、游标加载更多、加载更多失败页脚重试、
/// 首屏错误重试。
library;

import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:photo_live/core/api_client.dart';
import 'package:photo_live/core/device_id.dart';
import 'package:photo_live/core/session_store.dart';
import 'package:photo_live/l10n/app_localizations.dart';
import 'package:photo_live/pages/server_history_page.dart';

import '../helpers/fakes.dart';

const String _kOwnDevice = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa';
const String _kOtherDevice = 'bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb';

class _FixedDeviceIdStore implements DeviceIdStore {
  _FixedDeviceIdStore(this._value);
  final String _value;

  @override
  Future<String?> read() async => _value;

  @override
  Future<void> write(String value) async {}
}

/// 契约 `UploadSessionRecord` 响应体（GET /uploads 条目）。
Map<String, dynamic> sessionJson({
  String uploadId = 'upl-0001',
  String albumId = 'alb-1',
  String clientTaskId = 'clienttask000000000000000000000001',
  String state = 'confirmed',
  int expectedBytes = 2048,
  String createdAt = '2026-09-19T08:00:00Z',
  String photoId = 'pho-0001',
  String processingState = 'ready',
  String? sourceDeviceId = _kOwnDevice,
}) =>
    <String, dynamic>{
      'uploadId': uploadId,
      'albumId': albumId,
      'clientTaskId': clientTaskId,
      'state': state,
      'expectedBytes': expectedBytes,
      'contentType': 'image/jpeg',
      'createdAt': createdAt,
      'sourceDeviceId': sourceDeviceId,
      'photo': <String, dynamic>{
        'photoId': photoId,
        'processingState': processingState,
        'visibility': 'published',
      },
    };

void main() {
  late FakeSessionStore sessionStore;

  setUp(() {
    sessionStore = FakeSessionStore()
      ..session = Session(token: 'tok-1', account: 'alice');
  });

  /// 页面 watch albumListProvider（相册筛选候选）——适配器统一供给
  /// GET /v1/albums；/v1/uploads 路由由各用例注入。
  FakeAdapter adapterOf(
    (int, Object?) Function(RequestOptions options) uploads, {
    List<Map<String, dynamic>> albums = const <Map<String, dynamic>>[],
  }) =>
      FakeAdapter((o) {
        if (o.method == 'GET' && o.path == '/v1/albums') {
          return (200, cursorPageBody(albums));
        }
        return uploads(o);
      });

  Future<void> pumpPage(WidgetTester tester, ApiClient client) async {
    await tester.pumpWidget(
      ProviderScope(
        overrides: [
          apiClientProvider.overrideWith((ref) => client),
          deviceIdProvider.overrideWith(
            (ref) => DeviceId(store: _FixedDeviceIdStore(_kOwnDevice)),
          ),
        ],
        child: MaterialApp(
          localizationsDelegates: AppLocalizations.localizationsDelegates,
          supportedLocales: AppLocalizations.supportedLocales,
          home: const ServerHistoryPage(),
        ),
      ),
    );
    await tester.pumpAndSettle();
  }

  ApiClient clientOf(FakeAdapter adapter) => ApiClient(
        sessionStore: sessionStore,
        dio: Dio(BaseOptions(baseUrl: 'http://test.local'))
          ..httpClientAdapter = adapter,
      );

  /// 仅 /v1/uploads 请求（剥离相册列表请求）。
  Iterable<RecordedRequest> uploadsRequests(FakeAdapter adapter) =>
      adapter.requests.where((r) => r.path == '/v1/uploads');

  testWidgets('标题/副标题（跨设备口径）+ A19 横幅 + 行内容与设备来源回退',
      (tester) async {
    final adapter = adapterOf((o) {
      if (o.method == 'GET' && o.path == '/v1/uploads') {
        return (
          200,
          cursorPageBody([
            sessionJson(clientTaskId: 'owndevice0000000000000000000001'),
            sessionJson(
              uploadId: 'upl-0002',
              clientTaskId: 'otherdev000000000000000000000002',
              state: 'pending',
              processingState: 'processing',
              expectedBytes: 5 * 1024 * 1024,
              sourceDeviceId: _kOtherDevice,
            ),
            sessionJson(
              uploadId: 'upl-0003',
              clientTaskId: 'nodevice0000000000000000000000003',
              state: 'expired',
              processingState: 'processing_failed',
              expectedBytes: 4096,
              sourceDeviceId: null,
            ),
          ]),
        );
      }
      throw StateError('unexpected ${o.method} ${o.path}');
    });

    await pumpPage(tester, clientOf(adapter));

    // 页面 16：标题 + 跨设备副标题（与本地队列口径区分）。
    expect(find.text('Server records'), findsOneWidget);
    expect(find.text('All devices · Your account'), findsOneWidget);

    // A19 数据源区分横幅（本机待传队列入口指向「上传」页）。
    expect(find.textContaining('all of your devices'), findsOneWidget);
    expect(find.textContaining('Uploads tab'), findsOneWidget);

    // 行：clientTaskId 前 8 位 + KB（2048B → 2 KB；5MB → 5120 KB）。
    expect(find.textContaining('owndevic ·'), findsOneWidget);
    expect(find.textContaining('2 KB'), findsOneWidget);
    expect(find.textContaining('otherdev ·'), findsOneWidget);
    expect(find.textContaining('5120 KB'), findsOneWidget);
    expect(find.textContaining('nodevice · 4 KB'), findsOneWidget);

    // 状态徽章（会话状态 + 处理状态；页面 16 专用文案）。
    expect(find.text('Confirmed'), findsOneWidget);
    expect(find.text('Pending'), findsOneWidget);
    expect(find.text('Ready'), findsOneWidget);
    expect(find.text('Processing'), findsOneWidget);
    expect(find.text('Expired'), findsOneWidget);
    expect(find.text('Processing failed'), findsOneWidget);

    // 设备来源安全回退：本机 → This device；他机/缺失 → Unknown device
    //（不展示裸设备 ID）。
    expect(find.textContaining('This device'), findsOneWidget);
    expect(find.textContaining('Unknown device'), findsNWidgets(2));
    expect(
      find.textContaining(_kOtherDevice.substring(0, 8)),
      findsNothing,
      reason: '契约无设备名——不展示裸设备 ID',
    );

    // listUploads 请求带分页 limit=20。
    expect(
      uploadsRequests(adapter).single.uri.queryParameters['limit'],
      '20',
    );
  });

  testWidgets('相册筛选（候选来自相册列表；客户端过滤已加载记录）',
      (tester) async {
    final adapter = adapterOf(
      (o) {
        if (o.method == 'GET' && o.path == '/v1/uploads') {
          return (
            200,
            cursorPageBody([
              sessionJson(
                albumId: 'alb-1',
                clientTaskId: 'galarow00000000000000000000000001',
              ),
              sessionJson(
                albumId: 'alb-2',
                clientTaskId: 'wedrow000000000000000000000000002',
              ),
            ]),
          );
        }
        throw StateError('unexpected ${o.method} ${o.path}');
      },
      albums: [
        albumJson(),
        albumJson(
          id: 'alb-2',
          publicToken: 'sharetoken000000000002',
          translations: [
            <String, dynamic>{
              'locale': 'zh-CN',
              'title': '婚礼当天',
              'description': null,
              'venue': null,
              'address': null,
            },
            <String, dynamic>{
              'locale': 'en',
              'title': 'Wedding Day',
              'description': null,
              'venue': null,
              'address': null,
            },
          ],
        ),
      ],
    );

    await pumpPage(tester, clientOf(adapter));
    expect(find.textContaining('galarow'), findsOneWidget);
    expect(find.textContaining('wedrow'), findsOneWidget);

    // 打开相册筛选菜单（默认 All albums）→ 选择 Wedding Day。
    await tester.tap(find.text('All albums'));
    await tester.pumpAndSettle();
    await tester.tap(find.text('Wedding Day'));
    await tester.pumpAndSettle();

    // 仅保留 alb-2 记录；筛选入口标签随选择更新。
    expect(find.textContaining('wedrow'), findsOneWidget);
    expect(find.textContaining('galarow'), findsNothing);
    expect(find.text('Wedding Day'), findsOneWidget, reason: '药丸标签');
  });

  testWidgets('日期筛选（Today：仅保留今天创建的记录）', (tester) async {
    final now = DateTime.now().toUtc().toIso8601String();
    final adapter = adapterOf((o) {
      if (o.method == 'GET' && o.path == '/v1/uploads') {
        return (
          200,
          cursorPageBody([
            sessionJson(
              clientTaskId: 'todayrow0000000000000000000000001',
              createdAt: now,
            ),
            sessionJson(
              uploadId: 'upl-0002',
              clientTaskId: 'oldrow00000000000000000000000002',
              createdAt: '2026-09-01T00:00:00Z',
            ),
          ]),
        );
      }
      throw StateError('unexpected ${o.method} ${o.path}');
    });

    await pumpPage(tester, clientOf(adapter));
    expect(find.textContaining('todayrow'), findsOneWidget);
    expect(find.textContaining('oldrow'), findsOneWidget);

    // 打开日期筛选菜单（默认 Any time）→ 选择 Today。
    await tester.tap(find.text('Any time'));
    await tester.pumpAndSettle();
    await tester.tap(find.text('Today'));
    await tester.pumpAndSettle();

    expect(find.textContaining('todayrow'), findsOneWidget);
    expect(find.textContaining('oldrow'), findsNothing);
  });

  testWidgets('下拉刷新重取第一页', (tester) async {
    var first = true;
    final adapter = adapterOf((o) {
      if (o.method == 'GET' && o.path == '/v1/uploads') {
        return first
            ? (
                200,
                cursorPageBody([
                  sessionJson(
                    clientTaskId: 'firstrow000000000000000000000001',
                  ),
                ]),
              )
            : (
                200,
                cursorPageBody([
                  sessionJson(
                    clientTaskId: 'refreshr000000000000000000000002',
                  ),
                ]),
              );
      }
      throw StateError('unexpected ${o.method} ${o.path}');
    });

    await pumpPage(tester, clientOf(adapter));
    expect(find.textContaining('firstrow'), findsOneWidget);

    first = false;
    await tester.fling(
      find.byType(ListView),
      const Offset(0, 300),
      600,
    );
    await tester.pump();
    await tester.pumpAndSettle();

    expect(find.textContaining('refreshr'), findsOneWidget);
    expect(find.textContaining('firstrow'), findsNothing);
  });

  testWidgets('游标加载更多（滚动触底 → 第二页带 cursor）', (tester) async {
    final page1 = List<Map<String, dynamic>>.generate(
      20,
      (i) => sessionJson(
        uploadId: 'upl-p1-$i',
        clientTaskId: 'page1row$i.padLeft-000000000000000000001',
      ),
    );
    final adapter = adapterOf((o) {
      final cursor = o.uri.queryParameters['cursor'];
      if (cursor == null) {
        return (200, cursorPageBody(page1, nextCursor: 'hc1'));
      }
      if (cursor == 'hc1') {
        return (
          200,
          cursorPageBody(
            [sessionJson(clientTaskId: 'page2item000000000000000000000001')],
          ),
        );
      }
      throw StateError('unexpected cursor $cursor');
    });

    await pumpPage(tester, clientOf(adapter));
    expect(uploadsRequests(adapter), hasLength(1), reason: '首页无 cursor');

    await tester.drag(find.byType(ListView), const Offset(0, -6000));
    await tester.pumpAndSettle();

    expect(
      uploadsRequests(adapter).last.uri.queryParameters['cursor'],
      'hc1',
    );
    expect(find.textContaining('page2ite'), findsOneWidget);
  });

  testWidgets('加载更多失败 → 页脚重试行；重试恢复追加第二页', (tester) async {
    final page1 = List<Map<String, dynamic>>.generate(
      20,
      (i) => sessionJson(
        uploadId: 'upl-p1-$i',
        clientTaskId: 'page1row$i.padLeft-000000000000000000001',
      ),
    );
    var failMore = true;
    final adapter = adapterOf((o) {
      final cursor = o.uri.queryParameters['cursor'];
      if (cursor == null) {
        return (200, cursorPageBody(page1, nextCursor: 'hc1'));
      }
      if (failMore) {
        failMore = false;
        throw DioException(
          requestOptions: RequestOptions(path: o.path),
          type: DioExceptionType.connectionError,
        );
      }
      return (
        200,
        cursorPageBody(
          [sessionJson(clientTaskId: 'page2item000000000000000000000001')],
        ),
      );
    });

    await pumpPage(tester, clientOf(adapter));

    await tester.drag(find.byType(ListView), const Offset(0, -6000));
    await tester.pumpAndSettle();

    // 首屏成功不整体报错：仅页脚错误说明 + 重试（页面 16）。
    expect(find.textContaining('Network error'), findsOneWidget);
    expect(find.byIcon(Icons.cloud_off), findsOneWidget);
    expect(find.text('Retry'), findsOneWidget);

    await tester.tap(find.text('Retry'));
    await tester.pumpAndSettle();

    expect(find.textContaining('Network error'), findsNothing);
    expect(find.textContaining('page2ite'), findsOneWidget);
  });

  testWidgets('首屏加载失败展示错误与重试；恢复后重试成功', (tester) async {
    var failFirst = true;
    final adapter = adapterOf((o) {
      if (o.method == 'GET' && o.path == '/v1/uploads') {
        if (failFirst) {
          throw DioException(
            requestOptions: RequestOptions(path: o.path),
            type: DioExceptionType.connectionError,
          );
        }
        return (200, cursorPageBody([sessionJson()]));
      }
      throw StateError('unexpected ${o.method} ${o.path}');
    });

    await pumpPage(tester, clientOf(adapter));
    expect(find.textContaining('Network error'), findsOneWidget);
    expect(find.byIcon(Icons.cloud_off), findsOneWidget);

    failFirst = false;
    await tester.tap(find.text('Retry'));
    await tester.pumpAndSettle();

    expect(find.textContaining('Network error'), findsNothing);
    expect(find.textContaining('clientta'), findsOneWidget, reason: '重试后行渲染');
  });
}