import '../core/network/api_client.dart';
import '../core/network/endpoints.dart';
import '../models/comment_item.dart';

/// 评论服务（《03-接口文档》6.3~6.5）
class CommentService {
  CommentService._();

  /// 评论列表：parentId=0 查一级评论（带 reply_count），否则查该评论的二级回复
  static Future<CommentListPage> list(
    int videoId, {
    int page = 1,
    int pageSize = 20,
    int parentId = 0,
  }) async {
    final data = await ApiClient.get<Map<String, dynamic>>(
      Endpoints.videoComments(videoId),
      queryParameters: {
        'page': page,
        'page_size': pageSize,
        'parent_id': parentId,
      },
    );
    return CommentListPage.fromJson(data);
  }

  /// 发表评论（需登录）：回复时传 parentId（一级评论 ID）与 replyToUserId
  static Future<CommentCreateResult> create(
    int videoId,
    String content, {
    int? parentId,
    int? replyToUserId,
  }) async {
    final data = await ApiClient.post<Map<String, dynamic>>(
      Endpoints.videoComments(videoId),
      data: {
        'content': content,
        if (parentId != null) 'parent_id': parentId,
        if (replyToUserId != null) 'reply_to_user_id': replyToUserId,
      },
    );
    return CommentCreateResult.fromJson(data);
  }

  /// 删除评论（本人评论或本人视频下的评论）
  static Future<void> delete(int commentId) =>
      ApiClient.delete<Map<String, dynamic>>(Endpoints.commentDelete(commentId));
}