namespace WIDESEAWCS_RedisService.Leaderboard
{
    public interface ILeaderboardService
    {
        /// <summary>
        /// 添加或更新成员分数
        /// </summary>
        bool AddOrUpdate(string boardName, string member, double score);

        /// <summary>
        /// 增加成员分数
        /// </summary>
        double IncrementScore(string boardName, string member, double increment);

        /// <summary>
        /// 获取排名（从高到低，0开始）
        /// </summary>
        long? GetRank(string boardName, string member);

        /// <summary>
        /// 获取成员分数
        /// </summary>
        double? GetScore(string boardName, string member);

        /// <summary>
        /// 获取排行榜（从高到低）
        /// </summary>
        List<LeaderboardEntry> GetTopN(string boardName, int count);

        /// <summary>
        /// 获取指定排名范围
        /// </summary>
        List<LeaderboardEntry> GetRange(string boardName, long start, long stop);

        /// <summary>
        /// 移除成员
        /// </summary>
        bool Remove(string boardName, string member);

        /// <summary>
        /// 获取排行榜总人数
        /// </summary>
        long GetCount(string boardName);
    }

    public class LeaderboardEntry
    {
        public string Member { get; set; } = string.Empty;
        public double Score { get; set; }
        public long Rank { get; set; }
    }
}