import 'package:new_learn/core/api/class/model.dart';
import 'package:new_learn/core/network/dio_client.dart';

/// ============================================================
/// 【class 模块接口】班级模块请求 —— 对标 Vue3 端 api/class/index.ts + api/userPoint/index.ts
///
/// ClassApi：班级动态/成员/点赞/评论
///   getUserClassPost → 班级动态分页（游标 pageIndex + prevPageId）
///   getClassUsers     → 班级成员在线状态
///   addUserLike       → 点赞 / 取消点赞
///   addUserComment    → 评论
///
/// UserRankApi：积分排行榜
///   getUserCount → 排行榜总人数（本班级 / 同年级 / 同云校）
///   getRankPage  → 排行榜分页（游标分页：pageIndex + prevPageId）
///
/// 注意：页面只调这里，不直接碰 Dio；异常不在这里 catch，交页面统一处理。
/// ============================================================
class ClassApi {
  ClassApi._();

  static final ClassApi instance = ClassApi._();

  /// 班级动态列表（queryType: 0 我的动态 / 1 班级动态）
  Future<UserPostResponse> getUserClassPost({
    int queryType = 1,
    int pageIndex = 1,
    int pageSize = 10,
    int prevPageId = 0,
  }) async {
    final data = await DioClient.instance.get(
      '/api/v1/UserPost/GetUserClassPost',
      query: {
        'queryType': queryType,
        'pageIndex': pageIndex,
        'pageSize': pageSize,
        'prevPageId': prevPageId,
      },
    );
    return UserPostResponse.fromJson(data as Map<String, dynamic>);
  }

  /// 班级成员（在线状态）
  Future<List<ClassUser>> getClassUsers() async {
    final data = await DioClient.instance.get('/api/v1/User/GetClassUsers');
    final list = data is Map<String, dynamic> ? data['data'] : data;
    if (list is List) {
      return list
          .whereType<Map<String, dynamic>>()
          .map(ClassUser.fromJson)
          .toList();
    }
    return const [];
  }

  /// 点赞 / 取消点赞（likeStatus: true 点赞 / false 取消）
  Future<void> addUserLike({
    required int userPostId,
    required bool likeStatus,
  }) async {
    await DioClient.instance.post('/api/v1/UserLike/AddUserLike', data: {
      'userPostId': userPostId,
      'likeStatus': likeStatus,
    });
  }

  /// 评论动态
  Future<void> addUserComment({
    required int userPostId,
    required String content,
  }) async {
    await DioClient.instance.post('/api/v1/UserPost/AddUserCommon', data: {
      'userPostId': userPostId,
      'content': content,
    });
  }

  /// 我的点赞列表 —— GET /api/v1/UserLike/GetUserLike（游标分页）
  ///
  /// 后端每项包一层 {userPost: {...}}，这里统一解包成 UserPostDto，
  /// 页面拿到的是与班级动态一致的结构，直接复用 PostCard。
  Future<UserPostResponse> getMyLikePage({
    int pageIndex = 1,
    int pageSize = 10,
    int prevPageId = 0,
  }) async {
    final data = await DioClient.instance.get(
      '/api/v1/UserLike/GetUserLike',
      query: {
        'pageIndex': pageIndex,
        'pageSize': pageSize,
        'prevPageId': prevPageId,
      },
    );
    return _unwrapUserPostResponse(data);
  }

  /// 我的留言列表 —— GET /api/v1/UserPost/GetUserCommon（游标分页）
  Future<UserPostResponse> getMyCommentPage({
    int pageIndex = 1,
    int pageSize = 10,
    int prevPageId = 0,
  }) async {
    final data = await DioClient.instance.get(
      '/api/v1/UserPost/GetUserCommon',
      query: {
        'pageIndex': pageIndex,
        'pageSize': pageSize,
        'prevPageId': prevPageId,
      },
    );
    return _unwrapUserPostResponse(data);
  }

  /// 动态详情（含全量留言 / 点赞头像）—— GET /api/v1/UserPost/GetUserPostDetail/{id}
  Future<UserPostDto> getUserPostDetail(int id) async {
    final data = await DioClient.instance.get(
      '/api/v1/UserPost/GetUserPostDetail/$id',
    );
    return UserPostDto.fromJson(data as Map<String, dynamic>);
  }

  /// 删除评论 —— DELETE /api/v1/UserPost/DeleteUserCommon/{id}
  Future<void> deleteUserCommon(int commentId) async {
    await DioClient.instance.delete(
      '/api/v1/UserPost/DeleteUserCommon/$commentId',
    );
  }
}

/// 解包「我的点赞/留言」列表：每项若包了 userPost 则取内层，再统一转 UserPostDto
UserPostResponse _unwrapUserPostResponse(dynamic data) {
  final raw = data is Map<String, dynamic> ? data : {'data': data};
  final payload = raw['data'] is Map<String, dynamic>
      ? raw['data'] as Map<String, dynamic>
      : raw;
  final list = payload['data'];
  final posts = <UserPostDto>[];
  if (list is List) {
    for (final e in list) {
      if (e is! Map<String, dynamic>) continue;
      final inner = e['userPost'] is Map<String, dynamic>
          ? e['userPost'] as Map<String, dynamic>
          : e;
      posts.add(UserPostDto.fromJson(inner));
    }
  }
  return UserPostResponse(
    data: posts,
    total: _toInt(payload['total']),
    pageIndex: _toInt(payload['pageIndex']),
    pageSize: _toInt(payload['pageSize']),
  );
}

int _toInt(dynamic v) {
  if (v is num) return v.toInt();
  if (v is String) return int.tryParse(v) ?? 0;
  return 0;
}

/// 积分排行榜接口
class UserRankApi {
  UserRankApi._();

  static final UserRankApi instance = UserRankApi._();

  /// 排行榜总人数（本班级 / 同年级 / 同云校）
  Future<UserCountResult> getUserCount() async {
    final data = await DioClient.instance.get(
      '/api/v1/UserPointsRecord/GetUserCount',
    );
    return UserCountResult.fromJson(data as Map<String, dynamic>);
  }

  /// 排行榜分页（游标分页：pageIndex + prevPageId）
  /// [userRankType] 0 总榜 / 1 本周 / 2 上周 / 3 今天 / 4 昨天
  /// [userClass]    0 本班级 / 1 同年级 / 2 同云校
  Future<UserRankPagedList> getRankPage({
    required int pageIndex,
    required int pageSize,
    required int prevPageId,
    required int userRankType,
    required int userClass,
    required bool desc,
  }) async {
    final data = await DioClient.instance.get(
      '/api/v1/UserPointsRecord/GetUserRank',
      query: {
        'pageIndex': pageIndex,
        'pageSize': pageSize,
        'prevPageId': prevPageId,
        'UserRankType': userRankType,
        'UserClass': userClass,
        'desc': desc,
      },
    );
    return UserRankPagedList.fromJson(data as Map<String, dynamic>);
  }
}