namespace LingAdmin.Shared.Models;

/// <summary>
/// 用户实体模型
/// </summary>
public class User
{
    public int Id { get; set; }
    public required string Name { get; set; }
    public required string Email { get; set; }
    public required string PasswordHash { get; set; }
    public required string Status { get; set; }
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime? LastLoginAt { get; set; }
    public DateTime? UpdatedAt { get; set; }
    
    // 关联角色
    public ICollection<UserRole> UserRoles { get; set; } = new List<UserRole>();
}

/// <summary>
/// 角色实体模型
/// </summary>
public class Role
{
    public int Id { get; set; }
    public required string Name { get; set; }
    public required string Code { get; set; }
    public string? Description { get; set; }
    public bool IsSystem { get; set; } = false;
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public DateTime? UpdatedAt { get; set; }
    
    // 关联权限
    public ICollection<RolePermission> RolePermissions { get; set; } = new List<RolePermission>();
    public ICollection<UserRole> UserRoles { get; set; } = new List<UserRole>();
}

/// <summary>
/// 权限实体模型
/// </summary>
public class Permission
{
    public int Id { get; set; }
    public required string Name { get; set; }
    public required string Code { get; set; }
    public string? Description { get; set; }
    public required string Resource { get; set; }
    public required string Action { get; set; }
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    
    public ICollection<RolePermission> RolePermissions { get; set; } = new List<RolePermission>();
}

/// <summary>
/// 用户角色关联表
/// </summary>
public class UserRole
{
    public int UserId { get; set; }
    public User User { get; set; } = null!;
    
    public int RoleId { get; set; }
    public Role Role { get; set; } = null!;
    
    public DateTime AssignedAt { get; set; } = DateTime.UtcNow;
    public int? AssignedBy { get; set; }
}

/// <summary>
/// 角色权限关联表
/// </summary>
public class RolePermission
{
    public int RoleId { get; set; }
    public Role Role { get; set; } = null!;
    
    public int PermissionId { get; set; }
    public Permission Permission { get; set; } = null!;
    
    public DateTime AssignedAt { get; set; } = DateTime.UtcNow;
}

/// <summary>
/// 刷新令牌实体
/// </summary>
public class RefreshToken
{
    public int Id { get; set; }
    public int UserId { get; set; }
    public User User { get; set; } = null!;
    public required string Token { get; set; }
    public DateTime ExpiresAt { get; set; }
    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
    public string? CreatedByIp { get; set; }
    public DateTime? RevokedAt { get; set; }
    public string? RevokedByIp { get; set; }
    public string? ReplacedByToken { get; set; }
    
    public bool IsExpired => DateTime.UtcNow >= ExpiresAt;
    public bool IsRevoked => RevokedAt != null;
    public bool IsActive => !IsRevoked && !IsExpired;
}