using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using Domain.Entities.Developers.ValueObject;

namespace Domain.Entities.Developers;

/// <summary>
/// OAuth2 Client Credentials (ClientID + SecretHash).
/// Secret 회전을 위해 한 앱이 여러 credential 을 가질 수 있고 구 credential 은 Revoked 처리.
/// </summary>
public class ApiCredential
{
    [ForeignKey(nameof(ApplicationID))]
    public virtual ApiApplication? Application { get; private set; }

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

    public int ApplicationID { get; private set; }

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

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

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

    public CredentialStatus Status { get; private set; } = CredentialStatus.Active;

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

    public DateTime? LastUsedAt { get; private set; }

    public DateTime? RevokedAt { get; private set; }

    private ApiCredential() { }

    public static ApiCredential Create(int applicationID, string clientID, string secretHash, string secretHint)
    {
        return new ApiCredential
        {
            ApplicationID = applicationID,
            ClientID = clientID,
            SecretHash = secretHash,
            SecretHint = secretHint
        };
    }

    public void Revoke()
    {
        Status = CredentialStatus.Revoked;
        RevokedAt = DateTime.UtcNow;
    }

    public void TouchLastUsed()
    {
        LastUsedAt = DateTime.UtcNow;
    }

    public bool IsActive => Status == CredentialStatus.Active && RevokedAt == null;
}