feat(P2): 粉丝/关注数 + 用户主页统计 (getProfile/getCounts)

backend/internal/social/repo.go

@@ -91,3 +91,19 @@ func (r *SocialRepository) IsFollowed(ctx context.Context, social *Social) (bool
 	}
 	return count > 0, nil
 }
+
+func (r *SocialRepository) CountFollowers(ctx context.Context, vloggerID uint) (int64, error) {
+	var count int64
+	if err := r.db.WithContext(ctx).Model(&Social{}).Where("vlogger_id = ?", vloggerID).Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+func (r *SocialRepository) CountVloggers(ctx context.Context, followerID uint) (int64, error) {
+	var count int64
+	if err := r.db.WithContext(ctx).Model(&Social{}).Where("follower_id = ?", followerID).Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}