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

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

namespace Domain.Entities.Members.Logs;

/// <summary>
/// 사용자 별명 변경 내역
/// </summary>
public class MemberNameChangeLog
{
    [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 string? BeforeName { get; private set; } = default;

    public string? AfterName { get; private set; } = default;

    public string? Referer { get; private set; } = default;

    public string? IpAddress { get; private set; } = default;

    public string? UserAgent { get; private set; } = default;

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

    private MemberNameChangeLog() { }

    private MemberNameChangeLog(int memberID, string? beforeName, string? afterName, string? referer, string? ipAddress, string? userAgent)
    {
        if (memberID <= 0)
        {
            throw new ArgumentOutOfRangeException(nameof(memberID));
        }

        if (beforeName is not null && beforeName.Length > 40)
        {
            throw new ArgumentOutOfRangeException(nameof(beforeName));
        }

        if (afterName is not null && afterName.Length > 40)
        {
            throw new ArgumentOutOfRangeException(nameof(afterName));
        }

        // Cloudflare 더블 경유 방어 — throw 대신 truncate.
        if (ipAddress is not null && ipAddress.Length > 45)
        {
            ipAddress = ipAddress[..45];
        }

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

        MemberID = memberID;
        BeforeName = beforeName;
        AfterName = afterName;
        Referer = referer;
        IpAddress = ipAddress;
        UserAgent = userAgent;
        CreatedAt = DateTime.UtcNow;
    }

    public static MemberNameChangeLog Create(int memberID, string? beforeName, string? afterName, string? referer = null, string? ipAddress = null, string? userAgent = null)
    {
        return new(memberID, beforeName, afterName, referer, ipAddress, userAgent);
    }
}