using System.Net;
using System.Text.Json;
using System.Text.RegularExpressions;
using XFEExtension.NetCore.ServerInteractive.Attributes;
using XFEExtension.NetCore.ServerInteractive.Models.UserModels;
using XFEExtension.NetCore.ServerInteractive.Utilities.Helpers;
using XFEExtension.NetCore.StringExtension;

namespace XFEExtension.NetCore.ServerInteractive.Utilities.Server.Services.CoreService;

/// <summary>
/// 用户登录校验服务
/// </summary>
public partial class UserReloginService<T> : ServerCoreUserLoginServiceBase<T> where T : class
{
    /// <summary>
    /// 用户登录校验入口点
    /// </summary>
    [EntryPoint("user/relogin")]
    public async Task Relogin()
    {
        Console.Write("校验登录请求：");
        var session = Regex.Unescape(Json?["session"]?.ToString() ?? string.Empty);
        Console.Write(session.Length <= 10 ? session : session[..10]);
        var deviceInfo = Json?["deviceInfo"]?.ToString();
        if (session.IsNullOrWhiteSpace()) throw Error("Session值不能为空");
        if (deviceInfo.IsNullOrWhiteSpace()) throw Error("电脑信息不能为空");
        var split = session.Split('|');
        if (split.Length != 2 || split[0].IsNullOrWhiteSpace() || split[1].IsNullOrWhiteSpace()) throw Error("Session格式不正确", HttpStatusCode.Forbidden);
        if (GetEncryptedUserLoginModelFunction().FirstOrDefault(user => user.UserLoginModel.Uid == split[0]) is not { } encryptedUserLoginModel) throw Error("Session值不正确或已过期", HttpStatusCode.Forbidden);
        if (encryptedUserLoginModel.UserLoginModel.DeviceInfo != deviceInfo) throw Error("电脑信息不匹配");
        UserLoginModel userLoginModel;
        try
        {
            userLoginModel = UserHelper.Decrypt<UserLoginModel>(encryptedUserLoginModel.Key, split[1]);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"[AUTH] 重登Session解密失败：uid={split[0]}, error={ex.Message}");
            throw Error("Session值不正确或已过期", HttpStatusCode.Forbidden);
        }
        if (userLoginModel.Uid.IsNullOrWhiteSpace() || userLoginModel.Uid != encryptedUserLoginModel.UserLoginModel.Uid)
            throw Error("登录用户ID不匹配");
        var user = UserHelper.GetUser(userLoginModel.Uid, GetUserFunction()) ?? throw Error("用户ID未注册", HttpStatusCode.Forbidden);
        if (!UserHelper.IsSameIPAddress(userLoginModel.LastIPAddress, ReturnArgs.ClientIP) || !UserHelper.IsSameIPAddress(userLoginModel.LastIPAddress, encryptedUserLoginModel.UserLoginModel.LastIPAddress))
        {
            Console.WriteLine($"[AUTH] 重登IP地址不匹配：uid={split[0]}, session={userLoginModel.LastIPAddress}, stored={encryptedUserLoginModel.UserLoginModel.LastIPAddress}, actual={ReturnArgs.ClientIP}");
            throw Error("IP地址不匹配");
        }
        if (userLoginModel.EndDateTime < DateTime.Now || userLoginModel.EndDateTime != encryptedUserLoginModel.UserLoginModel.EndDateTime) throw Error("登录已过期");
        if (userLoginModel.DeviceInfo != encryptedUserLoginModel.UserLoginModel.DeviceInfo) throw Error("电脑信息不匹配");
        await Close(JsonSerializer.Serialize(LoginResultConvertFunction(user), JsonSerializerOptions));
    }
}