using System.Collections.Generic;
using System.Threading.Tasks;

namespace LiveForum.IService.Flowers
{
    /// <summary>
    /// 送花服务接口
    /// </summary>
    public interface IFlowerService
    {
        /// <summary>
        /// 检查是否可以送花（1小时限制检查，优先Redis）
        /// </summary>
        /// <param name="userId">用户ID</param>
        /// <param name="targetType">目标类型：Streamer(主播)/Post(帖子)</param>
        /// <param name="targetId">目标ID</param>
        /// <returns>是否可以送花</returns>
        Task<bool> CanSendFlowerAsync(long userId, string targetType, long targetId);

        /// <summary>
        /// 获取花数（优先Redis，再查数据库）
        /// </summary>
        /// <param name="targetType">目标类型：Streamer(主播)/Post(帖子)</param>
        /// <param name="targetId">目标ID</param>
        /// <returns>花数</returns>
        Task<int> GetFlowerCountAsync(string targetType, long targetId);

        /// <summary>
        /// 批量查询花数（仅Post类型）
        /// </summary>
        /// <param name="targetType">目标类型：Streamer(主播)/Post(帖子)</param>
        /// <param name="targetIds">目标ID列表</param>
        /// <returns>目标ID到花数的映射</returns>
        Task<Dictionary<long, int>> BatchGetFlowerCountAsync(string targetType, List<long> targetIds);

        /// <summary>
        /// 执行送花操作（Redis+队列）
        /// </summary>
        /// <param name="userId">用户ID</param>
        /// <param name="targetType">目标类型：Streamer(主播)/Post(帖子)</param>
        /// <param name="targetId">目标ID</param>
        /// <param name="receiverId">接收者ID（用于消息通知）</param>
        /// <returns>是否操作成功</returns>
        Task<bool> SendFlowerAsync(long userId, string targetType, long targetId, long receiverId);
    }
}