ANTOOZA-BACKEND/Domain/Entities/Members/Logs/MemberLoginLog.cs

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Domain.Entities.Members.Logs;

/// <summary>
/// 로그인 기록
/// </summary>
public class MemberLoginLog
{
    [ForeignKey(nameof(MemberID))]
    public virtual Member Member { get; private set; } = null!;

    [Key]
    public int ID { get; private set; }

    public int? MemberID { get; private set; }

    public bool Success { get; private set; } = false;

    public string Account { get; private set; } = default!;

    public string? Reason { get; private set; }

    public string? Referer { get; private set; }

    public string? Url { get; private set; }

    public string? IpAddress { get; private set; }

    public string? UserAgent { get; private set; }

    public DateTime CreatedAt { get; private set; } = DateTime.UtcNow;

    private MemberLoginLog() { }

    private MemberLoginLog(int? memberID, bool success, string account, string? reason, string? referer, string? url, string? ipAddress, string? userAgent)
    {
        if (string.IsNullOrWhiteSpace(account))
        {
            throw new ArgumentException("Account is required.", nameof(account));
        }

        if (account.Length > 120)
        {
            throw new ArgumentOutOfRangeException(nameof(account));
        }

        if (reason is not null && reason.Length > 225)
        {
            throw new ArgumentOutOfRangeException(nameof(reason));
        }

        if (url is not null && url.Length > 500)
        {
            throw new ArgumentOutOfRangeException(nameof(url));
        }

        // Cloudflare 더블 경유 / 비정상 헤더 방어 — throw 대신 truncate.
        // 실 user IP 는 Next.js Route Handler 가 X-Original-Client-IP 로 forward (백엔드 GetClientIP 0순위).
        if (ipAddress is not null && ipAddress.Length > 45)
        {
            ipAddress = ipAddress[..45];
        }

        if (userAgent is not null && userAgent.Length > 512)
        {
            userAgent = userAgent[..512];
        }

        MemberID = memberID;
        Success = success;
        Account = account;
        Reason = reason;
        Referer = referer;
        Url = url;
        IpAddress = ipAddress;
        UserAgent = userAgent;
        CreatedAt = DateTime.UtcNow;
    }

    public static MemberLoginLog Create(int? memberID, bool success, string account, string? reason = null, string? referer = null, string? url = null, string? ipAddress = null, string? userAgent = null)
    {
        return new(memberID, success, account, reason, referer, url, ipAddress, userAgent);
    }
}