import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:patbond_flutter/app/app_localization.dart';
import 'package:patbond_flutter/core/network/api_exception.dart';
import 'package:patbond_flutter/core/theme/app_theme.dart';
import 'package:patbond_flutter/core/widgets/app_date_picker.dart';
import 'package:patbond_flutter/features/pets/health_event_form_page.dart';
import 'package:patbond_flutter/features/pets/health_record_analytics.dart';
import 'package:patbond_flutter/features/pets/pet_exceptions.dart';
import 'package:patbond_flutter/features/pets/pet_models.dart';

import '../../helpers/pet_test_helpers.dart';

void main() {
  late FakePetsRepository repository;
  late List<(String, Map<String, dynamic>?)> events;
  late HealthRecordAnalytics analytics;

  setUp(() {
    repository = FakePetsRepository();
    events = [];
    analytics = HealthRecordAnalytics(
      (name, [props]) async => events.add((name, props)),
    );
  });

  List<Map<String, dynamic>?> eventsOf(String name) => [
    for (final e in events)
      if (e.$1 == name) e.$2,
  ];

  Future<void> pumpForm(WidgetTester tester) async {
    tester.view.physicalSize = const Size(700, 1700);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.reset);
    await tester.pumpWidget(
      MaterialApp(
        theme: buildAppTheme(),
        // M3.5-01：与生产一致挂 zh-CN delegate，否则测里的日期选择器是
        // 英文兜底，测不出用户真机看到的东西。
        localizationsDelegates: appLocalizationsDelegates,
        supportedLocales: appSupportedLocales,
        locale: appLocale,
        home: Builder(
          builder: (context) => Scaffold(
            body: Center(
              child: TextButton(
                onPressed: () => Navigator.of(context).push(
                  MaterialPageRoute<HealthEvent>(
                    builder: (_) => HealthEventFormPage(
                      repository: repository,
                      petId: 'p-1',
                      analytics: analytics,
                    ),
                  ),
                ),
                child: const Text('打开表单'),
              ),
            ),
          ),
        ),
      ),
    );
    await tester.tap(find.text('打开表单'));
    await tester.pumpAndSettle();
  }

  Future<void> fillValid(WidgetTester tester, {String? amount}) async {
    await tester.tap(find.text('就医'));
    await tester.pump();
    await tester.enterText(
      find.widgetWithText(TextFormField, '标题（如：皮肤检查）'),
      '皮肤检查',
    );
    if (amount != null) {
      await tester.enterText(
        find.widgetWithText(TextFormField, '金额（元，可选）'),
        amount,
      );
    }
    await tester.pump();
  }

  testWidgets('本地校验：类型/标题缺失与金额非法拦截，不发请求且报 validation_error', (tester) async {
    var called = false;
    repository.createHealthEventHandler = (petId, request) async {
      called = true;
      return buildHealthEvent('e-1');
    };

    await pumpForm(tester);
    await tester.enterText(
      find.widgetWithText(TextFormField, '金额（元，可选）'),
      '12.345',
    );
    await tester.tap(find.text('保存记录'));
    await tester.pump();

    expect(find.text('请选择事件类型'), findsOneWidget);
    expect(find.text('请输入标题'), findsOneWidget);
    expect(find.text('金额格式不正确，最多两位小数'), findsOneWidget);
    expect(called, isFalse);
    final failed = eventsOf('health_record_create_failed');
    expect(failed.single!['recordType'], 'health_event');
    expect(failed.single!['failureReason'], 'validation_error');
  });

  testWidgets('成功请求形状：六类类型、UTC 时间戳、金额元→整数分、无金额时键缺席', (tester) async {
    CreateHealthEventRequest? captured;
    repository.createHealthEventHandler = (petId, request) async {
      captured = request;
      return buildHealthEvent('e-1');
    };

    await pumpForm(tester);
    await fillValid(tester, amount: '128.50');
    await tester.tap(find.text('保存记录'));
    await tester.pumpAndSettle();

    final json = captured!.toJson();
    expect(json['eventType'], 'medical');
    expect(json['title'], '皮肤检查');
    // 金额以元录入 → 整数分传输（工单硬项）。
    expect(json['amountCents'], 12850);
    // 今日默认此刻，转 UTC 带 Z 上送。
    expect(json['occurredAt'], endsWith('Z'));
    expect(json.containsKey('notes'), isFalse);

    final succeeded = eventsOf('health_record_create_succeeded');
    expect(succeeded.single!['recordType'], 'health_event');
    expect(succeeded.single!['durationMs'], isA<int>());
  });

  testWidgets('无金额提交：amountCents 键整体缺席（非 0、非 null）', (tester) async {
    CreateHealthEventRequest? captured;
    repository.createHealthEventHandler = (petId, request) async {
      captured = request;
      return buildHealthEvent('e-1');
    };

    await pumpForm(tester);
    await fillValid(tester);
    await tester.tap(find.text('保存记录'));
    await tester.pumpAndSettle();
    expect(captured!.toJson().containsKey('amountCents'), isFalse);
  });

  testWidgets('started 去重：首次输入一次，后续输入不再上报', (tester) async {
    await pumpForm(tester);
    await fillValid(tester);
    await tester.enterText(
      find.widgetWithText(TextFormField, '备注（可选）'),
      '换季护理',
    );
    await tester.pump();

    final started = eventsOf('health_record_create_started');
    expect(started.single, {
      'recordType': 'health_event',
      'entryPoint': 'record_list',
    });
  });

  testWidgets('40300 横幅 / 40000 横幅 / 网络 SnackBar 三兜底 + 失败事件', (tester) async {
    var attempt = 0;
    repository.createHealthEventHandler = (petId, request) async {
      attempt++;
      switch (attempt) {
        case 1:
          throw const PetAccessDeniedException(message: '无权限');
        case 2:
          throw const ApiBusinessException(code: 40000, message: '参数错误');
        default:
          throw const ApiNetworkException('断网');
      }
    };

    await pumpForm(tester);
    await fillValid(tester);

    await tester.tap(find.text('保存记录'));
    await tester.pumpAndSettle();
    expect(find.text('你没有权限为该宠物添加记录'), findsOneWidget);

    await tester.tap(find.text('保存记录'));
    await tester.pumpAndSettle();
    expect(find.text('请检查填写内容后重试'), findsOneWidget);

    await tester.tap(find.text('保存记录'));
    await tester.pumpAndSettle();
    expect(find.text('网络异常，请检查网络后重试'), findsOneWidget);

    final failed = eventsOf('health_record_create_failed');
    expect(failed.length, 3);
    expect(failed[0]!['failureReason'], 'permission_denied');
    expect(failed[0]!['errorCode'], 40300);
    expect(failed[1]!['failureReason'], 'validation_error');
    expect(failed[1]!['errorCode'], 40000);
    expect(failed[2]!['failureReason'], 'network_error');
    expect(failed[2]!['attemptSeq'], 3);
  });

  group('M3.5-02 · 日期录入（用户误录 2026-04 的那一格）', () {
    testWidgets('点「今天」直接落今天，不开弹窗；同时算首次输入触发 started', (tester) async {
      await pumpForm(tester);

      final expected = dateToJson(DateTime.now());
      // 先把日期改成远月，模拟用户翻错月份后的状态。
      await tester.tap(find.widgetWithText(ListTile, '发生日期'));
      await tester.pumpAndSettle();
      await tester.tap(find.byIcon(Icons.edit_outlined));
      await tester.pumpAndSettle();
      await tester.enterText(
        find.descendant(
          of: find.byType(DatePickerDialog),
          matching: find.byType(TextField),
        ),
        '2026/04/09',
      );
      await tester.pumpAndSettle();
      await tester.tap(find.text('确定'));
      await tester.pumpAndSettle();
      expect(find.text('2026-04-09'), findsOneWidget);

      // 一键回今天：不经日期选择器。
      await tester.tap(find.text('今天'));
      await tester.pumpAndSettle();

      expect(find.text(expected), findsOneWidget);
      expect(find.text('选择日期'), findsNothing);
      expect(eventsOf('health_record_create_started'), hasLength(1));
    });

    testWidgets('选择器为中文，且业务约束不变（firstDate 1990 / lastDate 今天，不许未来）', (
      tester,
    ) async {
      await pumpForm(tester);

      await tester.tap(find.widgetWithText(ListTile, '发生日期'));
      await tester.pumpAndSettle();

      expect(find.text('选择日期'), findsOneWidget);
      expect(find.text('确定'), findsOneWidget);
      expect(find.text('取消'), findsOneWidget);
      // 手输快路可达（原生 calendarOnly 会砍掉它）。
      expect(find.byIcon(Icons.edit_outlined), findsOneWidget);

      final dialog = tester.widget<DatePickerDialog>(
        find.byType(DatePickerDialog),
      );
      expect(dialog.firstDate, DateTime(1990));
      expect(dialog.lastDate, dateOnly(DateTime.now()));
    });

    testWidgets('提交中禁用「今天」快捷键', (tester) async {
      final gate = Completer<HealthEvent>();
      repository.createHealthEventHandler = (petId, req) => gate.future;
      await pumpForm(tester);
      await fillValid(tester);

      await tester.tap(find.text('保存记录'));
      await tester.pump();

      expect(
        tester
            .widget<TextButton>(find.widgetWithText(TextButton, '今天'))
            .onPressed,
        isNull,
      );

      gate.complete(buildHealthEvent('he-1'));
      await tester.pumpAndSettle();
    });
  });
}