import 'dart:async';

import 'package:flutter_test/flutter_test.dart';
import 'package:patbond_flutter/core/network/api_exception.dart';
import 'package:patbond_flutter/features/auth/auth_models.dart';
import 'package:patbond_flutter/features/community/community_models.dart';
import 'package:patbond_flutter/features/profile/profile_controller.dart';

import '../../helpers/auth_test_helpers.dart';
import '../../helpers/community_test_helpers.dart';

void main() {
  late FakeCommunityRepository community;

  setUp(() {
    community = FakeCommunityRepository();
  });

  ProfileController build(FakeAuthRepository auth) =>
      ProfileController(authRepository: auth, communityRepository: community);

  test('四态：initial → loading → ready（资料 + 两块统计齐备）', () async {
    final gate = Completer<UserProfile>();
    final controller = build(FakeAuthRepository(meHandler: () => gate.future));
    community.onGetMyCommunityStats = () async =>
        CommunityStats.fromJson(sampleCommunityStatsJson());
    community.onGetFollowStats = (_) async =>
        FollowStats.fromJson(sampleFollowStatsJson());

    expect(controller.phase, ProfileLoadPhase.initial);
    final pending = controller.refresh();
    expect(controller.phase, ProfileLoadPhase.loading);

    gate.complete(buildProfile(nickname: '小柴'));
    await pending;

    expect(controller.phase, ProfileLoadPhase.ready);
    expect(controller.statsPhase, ProfileStatsPhase.ready);
    expect(controller.displayName, '小柴');
    expect(controller.communityStats!.receivedLikeCount, 128);
    expect(controller.followStats!.followerCount, 24);
  });

  test('/me 失败且无副本 → error 态 + 可重试；不外抛', () async {
    var attempts = 0;
    final auth = FakeAuthRepository(
      meHandler: () async {
        attempts += 1;
        if (attempts == 1) throw const ApiNetworkException('断网');
        return buildProfile(nickname: '小柴');
      },
    );
    final controller = build(auth);

    await controller.refresh();
    expect(controller.phase, ProfileLoadPhase.error);
    expect(controller.lastError, isA<ApiNetworkException>());
    expect(controller.profile, isNull);

    await controller.refresh();
    expect(controller.phase, ProfileLoadPhase.ready);
    expect(controller.displayName, '小柴');
  });

  test('已有副本时刷新失败保留副本（不打断阅读，停在 ready）', () async {
    var attempts = 0;
    final controller = build(
      FakeAuthRepository(
        meHandler: () async {
          attempts += 1;
          if (attempts == 1) return buildProfile(nickname: '小柴');
          throw const ApiNetworkException('断网');
        },
      ),
    );

    await controller.refresh();
    await controller.refresh();

    expect(controller.phase, ProfileLoadPhase.ready);
    expect(controller.displayName, '小柴');
    expect(controller.lastError, isA<ApiNetworkException>());
  });

  test('统计失败只降级统计块，资料仍 ready；refreshStats 可单独重试', () async {
    var statsAttempts = 0;
    community.onGetMyCommunityStats = () async {
      statsAttempts += 1;
      if (statsAttempts == 1) throw const ApiNetworkException('断网');
      return CommunityStats.fromJson(sampleCommunityStatsJson());
    };
    community.onGetFollowStats = (_) async =>
        FollowStats.fromJson(sampleFollowStatsJson());
    final controller = build(FakeAuthRepository());

    await controller.refresh();
    expect(controller.phase, ProfileLoadPhase.ready);
    expect(controller.statsPhase, ProfileStatsPhase.error);
    expect(controller.communityStats, isNull);

    await controller.refreshStats();
    expect(controller.statsPhase, ProfileStatsPhase.ready);
    expect(controller.phase, ProfileLoadPhase.ready);
  });

  test('空数据：两个数字为 0（不是 null、不是 404）', () async {
    community.onGetMyCommunityStats = () async => CommunityStats.fromJson(
      sampleCommunityStatsJson(receivedLikeCount: 0, publishedPostCount: 0),
    );
    community.onGetFollowStats = (_) async => FollowStats.fromJson(
      sampleFollowStatsJson(followerCount: 0, followingCount: 0),
    );
    final controller = build(FakeAuthRepository());

    await controller.refresh();

    expect(controller.communityStats!.receivedLikeCount, 0);
    expect(controller.communityStats!.publishedPostCount, 0);
  });

  test('save：空 patch 直接短路，不发请求（服务端对空 patch 答 400）', () async {
    final auth = FakeAuthRepository(
      updateMeHandler: (_) async => buildProfile(nickname: '不该被调用'),
    );
    final controller = build(auth);
    await controller.refresh();

    await controller.save(const UpdateMeRequest());

    expect(auth.updateMePayloads, isEmpty);
  });

  test('save 成功即以服务端回显替换副本（含 avatarUrl 现签值）', () async {
    final auth = FakeAuthRepository(
      updateMeHandler: (_) async => buildProfile(
        nickname: '小柴',
        avatarUrl: 'https://m/a.jpg?X-Amz-Signature=new',
      ),
    );
    final controller = build(auth);
    await controller.refresh();
    expect(controller.displayName, 'llx');

    await controller.save(
      const UpdateMeRequest(nickname: PatchField<String>.value('小柴')),
    );

    expect(controller.displayName, '小柴');
    expect(controller.profile!.avatarUrl, contains('X-Amz-Signature=new'));
    expect(auth.updateMePayloads.single, {'nickname': '小柴'});
  });

  test('save 失败按类型化异常外抛（供编辑页分层呈现），副本不动', () async {
    final auth = FakeAuthRepository(
      updateMeHandler: (_) async => throw const ApiBusinessException(
        code: ApiCodes.mediaNotReady,
        message: 'not ready',
      ),
    );
    final controller = build(auth);
    await controller.refresh();

    await expectLater(
      controller.save(
        const UpdateMeRequest(avatarAssetId: PatchField<String>.value('a-1')),
      ),
      throwsA(
        isA<ApiBusinessException>().having(
          (e) => e.code,
          'code',
          ApiCodes.mediaNotReady,
        ),
      ),
    );
    expect(controller.displayName, 'llx');
  });

  test('reset：登出清空资料与统计，回 initial（跨账号不泄漏）', () async {
    final controller = build(FakeAuthRepository());
    await controller.refresh();
    expect(controller.profile, isNotNull);

    controller.reset();

    expect(controller.phase, ProfileLoadPhase.initial);
    expect(controller.profile, isNull);
    expect(controller.displayName, isNull);
    expect(controller.communityStats, isNull);
    expect(controller.followStats, isNull);
  });

  test('follow-stats 用的是本人 userId（路径主体正确）', () async {
    final controller = build(
      FakeAuthRepository(meHandler: () async => buildProfile(userId: 'u-42')),
    );
    await controller.refresh();
    expect(community.calls, contains('followStats:u-42'));
    expect(community.calls, contains('communityStats'));
  });
}