ANTOOZA-BACKEND/Domain/Entities/Members/ChannelHandleHistory.cs

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

namespace Domain.Entities.Members;

/// <summary>
/// 채널 핸들 변경 이력 — 이전 핸들로 접속 시 현재 핸들로 리다이렉트 하기 위한 테이블
/// </summary>
public sealed class ChannelHandleHistory
{
    [ForeignKey(nameof(ChannelID))]
    public Channel Channel { get; private set; } = null!;

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

    public int ChannelID { get; private set; }

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

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

    private ChannelHandleHistory() { }

    private ChannelHandleHistory(int channelID, string oldHandle)
    {
        if (channelID <= 0)
        {
            throw new ArgumentOutOfRangeException(nameof(channelID));
        }

        if (string.IsNullOrWhiteSpace(oldHandle))
        {
            throw new ArgumentException("OldHandle is required.", nameof(oldHandle));
        }

        if (oldHandle.Length > 30)
        {
            throw new ArgumentOutOfRangeException(nameof(oldHandle));
        }

        ChannelID = channelID;
        OldHandle = oldHandle;
        ChangedAt = DateTime.UtcNow;
    }

    public static ChannelHandleHistory Create(int channelID, string oldHandle)
    {
        return new(channelID, oldHandle);
    }
}