using System;

namespace CoreAgent.ProtocolClient.Models
{
    /// <summary>
    /// TMSI匹配结果模型
    /// 用于存储通过TMSI匹配的请求UE ID和接收UE ID
    /// </summary>
    public class TmsiMatchResult
    {
        /// <summary>
        /// TMSI标识符
        /// </summary>
        public uint Tmsi { get; set; }

        /// <summary>
        /// 请求UE ID
        /// </summary>
        public int RequestUeId { get; set; }

        /// <summary>
        /// 接收UE ID
        /// </summary>
        public int ReceiveUeId { get; set; }

        /// <summary>
        /// IMSI标识符
        /// </summary>
        public string Imsi { get; set; } = string.Empty;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="tmsi">TMSI标识符</param>
        /// <param name="requestUeId">请求UE ID</param>
        /// <param name="receiveUeId">接收UE ID</param>
        /// <param name="imsi">IMSI标识符</param>
        public TmsiMatchResult(uint tmsi, int requestUeId, int receiveUeId, string imsi = "")
        {
            Tmsi = tmsi;
            RequestUeId = requestUeId;
            ReceiveUeId = receiveUeId;
            Imsi = imsi;
        }

        /// <summary>
        /// 重写ToString方法，提供友好的字符串表示
        /// </summary>
        /// <returns>格式化的字符串</returns>
        public override string ToString()
        {
            var imsiInfo = string.IsNullOrEmpty(Imsi) ? "" : $", IMSI: {Imsi}";
            return $"TMSI: 0x{Tmsi:X8}, RequestUE: {RequestUeId}, ReceiveUE: {ReceiveUeId}{imsiInfo}";
        }
    }

    /// <summary>
    /// Service Request TMSI映射实体
    /// 用于平铺 SrTmsiToUeId 字典数据，包含 IMSI、TMSI、UE ID、Root UE ID 四个字段
    /// </summary>
    public class SrTmsiMapping
    {
        /// <summary>
        /// IMSI标识符
        /// </summary>
        public string Imsi { get; set; } = string.Empty;

        /// <summary>
        /// Service Request TMSI标识符
        /// </summary>
        public uint Tmsi { get; set; }

        /// <summary>
        /// UE ID
        /// </summary>
        public int UeId { get; set; }

        /// <summary>
        /// Root UE ID（链的根节点）
        /// </summary>
        public int RootUeId { get; set; }

        /// <summary>
        /// PLMN标识符
        /// </summary>
        public string Plmn { get; set; } = string.Empty;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="imsi">IMSI标识符</param>
        /// <param name="tmsi">Service Request TMSI标识符</param>
        /// <param name="ueId">UE ID</param>
        /// <param name="rootUeId">Root UE ID</param>
        /// <param name="plmn">PLMN标识符</param>
        public SrTmsiMapping(string imsi, uint tmsi, int ueId, int rootUeId = 0, string plmn = "")
        {
            Imsi = imsi;
            Tmsi = tmsi;
            UeId = ueId;
            RootUeId = rootUeId;
            Plmn = plmn;
        }

        /// <summary>
        /// 重写ToString方法，提供友好的字符串表示
        /// </summary>
        /// <returns>格式化的字符串</returns>
        public override string ToString()
        {
            var imsiInfo = string.IsNullOrEmpty(Imsi) ? "" : $", IMSI: {Imsi}";
            var rootInfo = RootUeId > 0 ? $", Root UE: {RootUeId}" : "";
            var plmnInfo = string.IsNullOrEmpty(Plmn) ? "" : $", PLMN: {Plmn}";
            return $"SR-TMSI: 0x{Tmsi:X8}, UE ID: {UeId}{imsiInfo}{rootInfo}{plmnInfo}";
        }
    }
}