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

namespace Domain.Entities.Developers;

/// <summary>
/// 개발자가 등록한 외부 API 앱.
/// OAuth2 Client Credentials 발급 단위 (ApiCredential)
/// </summary>
public class ApiApplication
{
    [ForeignKey(nameof(OwnerMemberID))]
    public virtual Member? Owner { get; private set; }

    public virtual ICollection<ApiCredential> Credentials { get; private set; } = new List<ApiCredential>();

    public virtual ICollection<ApiApplicationScope> Scopes { get; private set; } = new List<ApiApplicationScope>();

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

    public int OwnerMemberID { get; private set; }

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

    public string? Description { get; private set; }

    public string? HomepageUrl { get; private set; }

    public string? LogoPath { get; private set; }

    public ApplicationStatus Status { get; private set; } = ApplicationStatus.Pending;

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

    public DateTime? UpdatedAt { get; private set; }

    public DateTime? ApprovedAt { get; private set; }

    public DateTime? SuspendedAt { get; private set; }

    private ApiApplication() { }

    public static ApiApplication Create(int ownerMemberID, string name, string? description, string? homepageUrl)
    {
        if (string.IsNullOrWhiteSpace(name))
        {
            throw new ArgumentException("Name is required.", nameof(name));
        }

        if (name.Length > 100)
        {
            throw new ArgumentOutOfRangeException(nameof(name));
        }

        return new ApiApplication
        {
            OwnerMemberID = ownerMemberID,
            Name = name,
            Description = description,
            HomepageUrl = homepageUrl
        };
    }

    public void UpdateInfo(string name, string? description, string? homepageUrl)
    {
        Name = name;
        Description = description;
        HomepageUrl = homepageUrl;
        UpdatedAt = DateTime.UtcNow;
    }

    public void SetLogo(string? logoPath)
    {
        LogoPath = logoPath;
        UpdatedAt = DateTime.UtcNow;
    }

    public void Approve()
    {
        Status = ApplicationStatus.Active;
        ApprovedAt = DateTime.UtcNow;
        UpdatedAt = DateTime.UtcNow;
    }

    public void Reject()
    {
        Status = ApplicationStatus.Rejected;
        UpdatedAt = DateTime.UtcNow;
    }

    public void Suspend()
    {
        Status = ApplicationStatus.Suspended;
        SuspendedAt = DateTime.UtcNow;
        UpdatedAt = DateTime.UtcNow;
    }

    public void Reactivate()
    {
        Status = ApplicationStatus.Active;
        SuspendedAt = null;
        UpdatedAt = DateTime.UtcNow;
    }
}