// 功能描述：草稿重开恢复、跨账户隔离、提交前持久化与存储失败不发单。
// 版本：1.0.0。
import 'dart:convert';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:go_router/go_router.dart';
import 'package:user_app/data/repositories/client_repository.dart';
import 'package:user_app/data/services/api_client.dart';
import 'package:user_app/data/services/repair_draft_store.dart';
import 'package:user_app/ui/features/tickets/repair_page.dart';

class _Drafts implements RepairDraftStore {
  final records = <String, Map<String, Object?>>{};
  bool fail = false;
  @override
  Future<Map<String, Object?>?> read(String owner) async => records[owner];
  @override
  Future<void> write(String owner, Map<String, Object?> draft) async {
    if (fail) throw Exception('storage');
    records[owner] = draft;
  }

  @override
  Future<void> delete(String owner) async {
    records.remove(owner);
  }
}

class _Repository extends ClientRepository {
  _Repository(this.store) : super(ApiClient(() => '', baseUrl: 'https://api.example.com'));
  final _Drafts store;
  String owner = 'api#alice';
  int submissions = 0;
  @override
  Future<String> repairDraftOwner() async => owner;
  @override
  Future<Uint8List?> uploadedTicketPhoto(String uri) async => base64Decode(
    'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+aX1cAAAAASUVORK5CYII=',
  );
  @override
  Future<String> submitRepair({
    required String requestNo,
    required String description,
    required String faultType,
    required String addressIdentity,
    DateTime? appointment,
    List<Map<String, Object?>> photos = const [],
  }) async {
    expect(requestNo, 'persisted-request');
    expect(store.records[owner]!['attempted'], true);
    expect(store.records[owner]!['request_no'], requestNo);
    expect(photos.length, 1);
    submissions++;
    if (submissions == 1) throw const ApiException(500, '结果待确认');
    return 'ticket-1';
  }
}

Map<String, Object?> draft({bool pending = true}) => {
  'schema': 1,
  'request_no': 'persisted-request',
  'description': '已保存故障',
  'fault_type': 'valve',
  'step': pending ? 2 : 0,
  'attempted': pending,
  'address': pending
      ? {
          'identity': 'address-1',
          'address': '草稿地址',
          'contact_name': '联系人',
          'contact_phone': '13800000001',
        }
      : null,
  'photos': pending
      ? [
          {
            'uri': '/uploads/ticket-photos/owned/photo.png',
            'source': 'gallery',
            'added_at': '2026-09-07T01:00:00Z',
          },
        ]
      : [],
};
GoRouter routerFor(ClientRepository repository, RepairDraftStore store) => GoRouter(
  initialLocation: '/repair',
  routes: [
    GoRoute(
      path: '/repair',
      builder: (_, s) => RepairPage(repository: repository, draftStore: store),
    ),
    GoRoute(
      path: '/me',
      builder: (_, s) => const Scaffold(body: Text('已暂存退出')),
    ),
    GoRoute(
      path: '/tickets/:identity',
      builder: (_, s) => const Scaffold(body: Text('已提交')),
    ),
    GoRoute(
      path: '/orders',
      builder: (_, s) => const Scaffold(body: Text('工单列表')),
    ),
  ],
);

void main() {
  testWidgets('损坏草稿不会自动丢弃，明确清除后才可重新填写', (tester) async {
    final store = _Drafts()..records['api#alice'] = {'schema': 1};
    final repository = _Repository(store);
    final router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    await tester.tap(find.text('恢复草稿'));
    await tester.pumpAndSettle();
    expect(store.records['api#alice'], isNotNull);
    await tester.tap(find.text('清除无法读取的草稿'));
    await tester.pumpAndSettle();
    expect(store.records['api#alice'], isNotNull);
    await tester.tap(find.text('清除草稿'));
    await tester.pumpAndSettle();
    expect(store.records['api#alice'], isNull);
    expect(find.byType(TextField), findsOneWidget);
    expect(repository.submissions, 0);
    await tester.pumpWidget(const SizedBox());
    router.dispose();
  });
  testWidgets('结果未知重开后恢复原请求，成功清理草稿', (tester) async {
    final store = _Drafts()..records['api#alice'] = draft();
    final repository = _Repository(store);
    var router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    expect(repository.submissions, 0);
    await tester.tap(find.text('恢复草稿'));
    await tester.pumpAndSettle();
    await tester.ensureVisible(find.text('重试提交'));
    await tester.tap(find.text('重试提交'));
    await tester.pumpAndSettle();
    expect(repository.submissions, 1);
    expect(store.records['api#alice']!['request_no'], 'persisted-request');
    await tester.pumpWidget(const SizedBox());
    router.dispose();
    router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    await tester.tap(find.text('恢复草稿'));
    await tester.pumpAndSettle();
    expect(find.text('已保存故障'), findsOneWidget);
    expect(repository.submissions, 1);
    await tester.ensureVisible(find.text('重试提交'));
    await tester.tap(find.text('重试提交'));
    await tester.pumpAndSettle();
    expect(repository.submissions, 2);
    expect(store.records['api#alice'], isNull);
    expect(find.text('已提交'), findsOneWidget);
    await tester.pumpWidget(const SizedBox());
    router.dispose();
  });
  testWidgets('保存失败不发送工单且保留输入', (tester) async {
    final store = _Drafts()
      ..records['api#alice'] = draft()
      ..fail = true;
    final repository = _Repository(store);
    final router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    await tester.tap(find.text('恢复草稿'));
    await tester.pumpAndSettle();
    await tester.ensureVisible(find.text('重试提交'));
    await tester.tap(find.text('重试提交'));
    await tester.pumpAndSettle();
    expect(repository.submissions, 0);
    expect(find.textContaining('提交前保存失败'), findsOneWidget);
    expect(find.text('已保存故障'), findsOneWidget);
    await tester.pumpWidget(const SizedBox());
    router.dispose();
  });
  testWidgets('其他账户不会出现已有草稿', (tester) async {
    final store = _Drafts()..records['api#alice'] = draft();
    final repository = _Repository(store)..owner = 'api#bob';
    final router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    expect(find.text('发现报修草稿'), findsNothing);
    expect(find.text('已保存故障'), findsNothing);
    expect(store.records['api#alice'], isNotNull);
    await tester.pumpWidget(const SizedBox());
    router.dispose();
  });
  testWidgets('暂存退出保存编辑和同一个请求号', (tester) async {
    tester.view.physicalSize = const Size(390, 844);
    tester.view.devicePixelRatio = 1;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);
    final store = _Drafts()..records['api#alice'] = draft(pending: false);
    final repository = _Repository(store);
    final router = routerFor(repository, store);
    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
    await tester.pumpAndSettle();
    await tester.tap(find.text('恢复草稿'));
    await tester.pumpAndSettle();
    await tester.enterText(find.byType(TextField), '修改后暂存');
    await tester.ensureVisible(find.text('暂存并退出'));
    await tester.tap(find.text('暂存并退出'));
    await tester.pumpAndSettle();
    expect(find.text('已暂存退出'), findsOneWidget);
    expect(store.records['api#alice']!['description'], '修改后暂存');
    expect(store.records['api#alice']!['request_no'], 'persisted-request');
    expect(repository.submissions, 0);
    await tester.pumpWidget(const SizedBox());
    router.dispose();
  });
}