import 'dart:convert';
import 'package:aioa_mobile/app/app.dart';
import 'package:aioa_mobile/app/router.dart';
import 'package:aioa_mobile/core/config/runtime_config.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:http/http.dart' as http;
import 'package:integration_test/integration_test.dart';

void main() {
  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
  testWidgets('complete MVP frontend business scenario', (tester) async {
    final api = _E2eApi(RuntimeConfig.e2eAccessToken);
    await api.registerDevice('90000000-0000-4000-8000-000000000001');
    await tester.pumpWidget(const ProviderScope(child: AioaApp()));
    await tester.pumpAndSettle(const Duration(seconds: 10));
    expect(find.text('工作台'), findsOneWidget);
    switch (RuntimeConfig.e2eRole) {
      case 'manager':
        await _managerScenario(tester);
      case 'admin':
        await _adminScenario(tester);
      default:
        await _employeeScenario(tester, api);
    }
  });
}

Future<void> _employeeScenario(WidgetTester tester, _E2eApi api) async {
  await tester.tap(find.text('发起请假'));
  await tester.pumpAndSettle(const Duration(seconds: 8));
  expect(find.text('请假申请'), findsOneWidget);
  expect(find.text('千问表单助手'), findsOneWidget);
  expect(find.byKey(const ValueKey('type')), findsOneWidget);
  expect(find.byKey(const ValueKey('startsAt')), findsOneWidget);
  expect(find.byKey(const ValueKey('endsAt')), findsOneWidget);
  expect(find.byKey(const ValueKey('reason')), findsOneWidget);
  appRouter.go('/workspace');
  await tester.pumpAndSettle();

  final reason = 'iOS MVP 集成测试 ${DateTime.now().millisecondsSinceEpoch}';
  final draft = await api.createDraft(reason);
  await tester.tap(find.text('我的请假申请'));
  await tester.pumpAndSettle(const Duration(seconds: 5));
  expect(find.textContaining(reason), findsOneWidget);
  await tester.tap(find.textContaining(reason));
  await tester.pumpAndSettle();
  expect(find.text('草稿'), findsOneWidget);
  await tester.tap(find.text('提交审批'));
  await tester.pumpAndSettle();
  await tester.tap(find.widgetWithText(FilledButton, '确认'));
  await tester.pumpAndSettle(const Duration(seconds: 5));
  expect(find.text('审批中'), findsOneWidget);

  appRouter.go('/workspace');
  await tester.pumpAndSettle();
  await tester.tap(find.text('AI 助手'));
  await tester.pumpAndSettle();
  expect(find.text('AI 流程助手'), findsOneWidget);
  await tester.enterText(find.byType(TextField).first, '我最近提交的请假到哪一步了？');
  await tester.tap(find.text('查询进度'));
  await tester.pumpAndSettle(const Duration(seconds: 8));
  expect(find.textContaining('查询失败'), findsWidgets);

  await tester.tap(find.text('待办'));
  await tester.pumpAndSettle();
  expect(find.textContaining('通知'), findsWidgets);
  await tester.tap(find.text('我的'));
  await tester.pumpAndSettle(const Duration(seconds: 5));
  expect(find.text('登录设备'), findsOneWidget);
  expect(draft['id'], isNotNull);
}

Future<void> _managerScenario(WidgetTester tester) async {
  final employee = _E2eApi(RuntimeConfig.e2eEmployeeToken);
  await employee.registerDevice('90000000-0000-4000-8000-000000000002');
  final reason = '主管 iOS 审批测试 ${DateTime.now().millisecondsSinceEpoch}';
  final draft = await employee.createDraft(
    reason,
    deviceId: '90000000-0000-4000-8000-000000000002',
  );
  await employee.submitDraft(
    draft,
    deviceId: '90000000-0000-4000-8000-000000000002',
  );
  await tester.tap(find.text('待办'));
  await tester.pumpAndSettle(const Duration(seconds: 8));
  expect(find.text(reason), findsOneWidget);
  final taskCard = find.ancestor(
    of: find.text(reason),
    matching: find.byType(Card),
  );
  await tester.tap(find.descendant(of: taskCard, matching: find.text('批准')));
  await tester.pumpAndSettle();
  await tester.tap(find.widgetWithText(FilledButton, '确认批准'));
  await tester.pumpAndSettle(const Duration(seconds: 8));
  expect(find.text('已批准'), findsOneWidget);
}

Future<void> _adminScenario(WidgetTester tester) async {
  await tester.tap(find.text('我的'));
  await tester.pumpAndSettle(const Duration(seconds: 8));
  expect(find.text('OA 管理中心'), findsOneWidget);
  await tester.tap(find.text('OA 管理中心'));
  await tester.pumpAndSettle(const Duration(seconds: 10));
  expect(find.text('指标'), findsOneWidget);
  expect(find.text('组织'), findsOneWidget);
  expect(find.text('流程'), findsOneWidget);
  expect(find.text('审计'), findsOneWidget);
  await tester.tap(find.text('组织'));
  await tester.pumpAndSettle();
  expect(find.text('新增部门'), findsOneWidget);
  await tester.tap(find.text('流程'));
  await tester.pumpAndSettle();
  expect(find.text('流程定义'), findsOneWidget);
  await tester.tap(find.text('审计'));
  await tester.pumpAndSettle();
  expect(find.byType(Card), findsWidgets);
}

class _E2eApi {
  _E2eApi(this.token);
  final String token;
  String get base => RuntimeConfig.apiBaseUrl;
  Map<String, String> headers([String? device]) => {
    'Authorization': 'Bearer $token',
    'Content-Type': 'application/json',
    'X-AIOA-Device-Id': ?device,
  };
  static const device = '90000000-0000-4000-8000-000000000001';
  Future<void> registerDevice(String id) async {
    final r = await http.post(
      Uri.parse('$base/devices/register'),
      headers: headers(),
      body: jsonEncode({
        'id': id,
        'name': 'iOS integration test',
        'platform': 'IOS',
      }),
    );
    expect(r.statusCode, 200);
  }

  Future<Map<String, Object?>> createDraft(
    String reason, {
    String deviceId = device,
  }) async {
    final now = DateTime.now().toUtc().add(const Duration(days: 2));
    final r = await http.post(
      Uri.parse('$base/leave-requests/drafts'),
      headers: {
        ...headers(deviceId),
        'Idempotency-Key': 'ios-e2e-${DateTime.now().microsecondsSinceEpoch}',
      },
      body: jsonEncode({
        'type': 'PERSONAL',
        'startsAt': now.toIso8601String(),
        'endsAt': now.add(const Duration(hours: 4)).toIso8601String(),
        'reason': reason,
        'version': 0,
      }),
    );
    expect(r.statusCode, 201);
    return Map<String, Object?>.from(jsonDecode(r.body) as Map);
  }

  Future<void> submitDraft(
    Map<String, Object?> draft, {
    String deviceId = device,
  }) async {
    final r = await http.post(
      Uri.parse('$base/leave-requests/${draft['id']}/submit'),
      headers: {
        ...headers(deviceId),
        'Idempotency-Key':
            'ios-submit-${DateTime.now().microsecondsSinceEpoch}',
      },
      body: jsonEncode({'version': draft['version']}),
    );
    expect(r.statusCode, 200);
  }
}