namespace WIDESEAWCS_RedisService.Geo
{
    public interface IGeoLocationService
    {
        /// <summary>
        /// 添加地理位置
        /// </summary>
        bool Add(string key, double longitude, double latitude, string member);

        /// <summary>
        /// 获取成员位置
        /// </summary>
        GeoPosition? GetPosition(string key, string member);

        /// <summary>
        /// 计算两个成员之间的距离（米）
        /// </summary>
        double? GetDistance(string key, string member1, string member2);

        /// <summary>
        /// 搜索指定半径内的成员
        /// </summary>
        List<GeoRadiusResult> SearchRadius(string key, double longitude, double latitude, double radiusMeters, int count = 10);

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

    public class GeoPosition
    {
        public double Longitude { get; set; }
        public double Latitude { get; set; }
    }

    public class GeoRadiusResult
    {
        public string Member { get; set; } = string.Empty;
        public double? Distance { get; set; }
        public GeoPosition? Position { get; set; }
    }
}