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

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

namespace Domain.Entities.Members.Logs;

/// <summary>
/// 한마디 변경 내역
/// </summary>
public class MemberSummaryChangeLog
{
    [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? BeforeSummary { get; private set; } = default;

    public string? AfterSummary { 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 MemberSummaryChangeLog() { }

    private MemberSummaryChangeLog(int memberID, string? beforeSummary, string? afterSummary, string? referer, string? ipAddress, string? userAgent)
    {
        if (memberID <= 0)
        {
            throw new ArgumentOutOfRangeException(nameof(memberID));
        }

        if (beforeSummary is not null && beforeSummary.Length > 50)
        {
            throw new ArgumentOutOfRangeException(nameof(beforeSummary));
        }

        if (afterSummary is not null && afterSummary.Length > 50)
        {
            throw new ArgumentOutOfRangeException(nameof(afterSummary));
        }

        // 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;
        BeforeSummary = beforeSummary;
        AfterSummary = afterSummary;
        Referer = referer;
        IpAddress = ipAddress;
        UserAgent = userAgent;
        CreatedAt = DateTime.UtcNow;
    }

    public static MemberSummaryChangeLog Create(int memberID, string? beforeSummary, string? afterSummary, string? referer = null, string? ipAddress = null, string? userAgent = null)
    {
        return new(memberID, beforeSummary, afterSummary, referer, ipAddress, userAgent);
    }
}