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/profile/profile_display.dart';

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

void main() {
  group('展示名回退 nickname ?? username', () {
    test('有昵称：展示昵称，nickname 字段保留 DB 原值', () {
      final profile = buildProfile(username: 'llx', nickname: '小柴');
      expect(profile.displayName, '小柴');
      expect(profile.nickname, '小柴');
    });

    test('无昵称：展示 username，但 nickname 仍为 null（不被回退值污染）', () {
      final profile = buildProfile(username: 'llx');
      expect(profile.displayName, 'llx');
      expect(
        profile.nickname,
        isNull,
        reason: '回退只在展示层发生；nickname 必须保持 null，否则编辑页预填后会被固化成真昵称',
      );
    });

    test('hasAvatar 只看 avatarUrl（响应不外露 avatarAssetId）', () {
      expect(buildProfile().hasAvatar, isFalse);
      expect(
        buildProfile(avatarUrl: 'https://m/a.jpg?X-Amz-Signature=s').hasAvatar,
        isTrue,
      );
    });
  });

  group('UpdateMeRequest 三态载荷', () {
    test('什么都没碰 → isEmpty 且 JSON 为空对象', () {
      const request = UpdateMeRequest();
      expect(request.isEmpty, isTrue);
      expect(request.toJson(), isEmpty);
    });

    test('只改昵称：avatarAssetId 键**不出现**（不改，而不是清空）', () {
      const request = UpdateMeRequest(nickname: PatchField<String>.value('小柴'));
      final json = request.toJson();
      expect(json, {'nickname': '小柴'});
      expect(
        json.containsKey('avatarAssetId'),
        isFalse,
        reason: '发成 avatarAssetId: null 会把用户头像一起清掉',
      );
    });

    test('只清昵称：nickname 显式 null，头像键仍不出现', () {
      const request = UpdateMeRequest(nickname: PatchField<String>.clear());
      final json = request.toJson();
      expect(json.containsKey('nickname'), isTrue);
      expect(json['nickname'], isNull);
      expect(json.containsKey('avatarAssetId'), isFalse);
    });

    test('一次改两样：两键齐出', () {
      const request = UpdateMeRequest(
        nickname: PatchField<String>.value('小柴'),
        avatarAssetId: PatchField<String>.value('asset-9'),
      );
      expect(request.toJson(), {'nickname': '小柴', 'avatarAssetId': 'asset-9'});
      expect(request.isEmpty, isFalse);
    });

    test('只清头像：nickname 键不出现', () {
      const request = UpdateMeRequest(
        avatarAssetId: PatchField<String>.clear(),
      );
      final json = request.toJson();
      expect(json.containsKey('nickname'), isFalse);
      expect(json['avatarAssetId'], isNull);
    });
  });

  group('昵称校验与 ck_users_nickname 对齐', () {
    test('1 码点通过；32 CJK 通过；33 拒', () {
      expect(validateNickname('柴'), isNull);
      expect(validateNickname('柴' * 32), isNull);
      expect(validateNickname('柴' * 33), isNotNull);
    });

    test('32 个 emoji（UTF-16 长度 64）通过——长度按码点计而非 String.length', () {
      const emoji = '🐕';
      final name = emoji * 32;
      expect(name.length, 64, reason: '前提：UTF-16 长度确为 64');
      expect(
        validateNickname(name),
        isNull,
        reason: '按 String.length 校验会误拒数据库能存的 32 emoji 昵称',
      );
      expect(validateNickname(emoji * 33), isNotNull);
    });

    test('btrim 对齐：前后空格不计入长度', () {
      expect(validateNickname('  豆豆  '), isNull);
      expect(validateNickname('  ${'柴' * 32}  '), isNull);
    });

    test('纯空白不是隐式清空，而是校验失败并指向显式清除入口', () {
      final message = validateNickname('   ');
      expect(message, isNotNull);
      expect(message, contains('清除昵称'));
    });
  });

  group('错误文案分层', () {
    test('保存失败按 PATCH /me 错误谱分层', () {
      expect(
        profileSaveErrorMessage(
          const ApiBusinessException(code: ApiCodes.paramError, message: 'x'),
        ),
        '填写内容不符合要求，请检查后重试',
      );
      expect(
        profileSaveErrorMessage(
          const ApiBusinessException(
            code: ApiCodes.mediaNotFound,
            message: 'x',
          ),
        ),
        '头像已失效，请重新上传',
      );
      expect(
        profileSaveErrorMessage(
          const ApiBusinessException(
            code: ApiCodes.mediaNotReady,
            message: 'x',
          ),
        ),
        '头像还没上传完，请稍后重试',
      );
      expect(
        profileSaveErrorMessage(const ApiNetworkException()),
        '网络异常，请检查网络后重试',
      );
    });

    test('加载失败文案不透出服务端 message', () {
      expect(
        profileLoadErrorMessage(
          const ApiNetworkException('Connection refused'),
        ),
        '网络异常，请检查网络后重试',
      );
      expect(profileLoadErrorMessage(null), '加载失败，请稍后重试');
    });
  });
}