using System.Reflection;
using Dpz.Core.EnumLibrary;

namespace Dpz.Core.Public.ViewModel;

/// <summary>
/// Represents the VmUserInfo type.
/// </summary>
public class VmUserInfo
{
    /// <summary>
    /// 账号
    /// </summary>
    public required string Id { get; set; }

    /// <summary>
    /// 昵称
    /// </summary>
    public required string Name { get; set; }

    /// <summary>
    /// 最后访问时间
    /// </summary>
    public DateTime? LastAccessTime { get; set; } = DateTime.Now;

    /// <summary>
    /// 个性签名
    /// </summary>
    public string? Sign { get; set; }

    /// <summary>
    /// 邮箱
    /// </summary>
    public string? Email { get; set; }

    /// <summary>
    /// 头像
    /// </summary>
    public required string Avatar { get; set; }

    /// <summary>
    /// 性别
    /// </summary>
    public Sex Sex { get; set; }

    /// <summary>
    /// 权限
    /// </summary>
    public Permissions? Permissions { get; set; }

    /// <summary>
    /// 是否启用
    /// </summary>
    public bool? Enable { get; set; }

    /// <summary>
    /// 唯一 key
    /// 当密码修改时，这个key将会改变
    /// </summary>
    public required string Key { get; set; }

    /// <summary>
    /// 当前登录会话 ID
    /// </summary>
    public string? SessionId { get; set; }

    /// <summary>
    /// 邮箱是否已验证
    /// </summary>
    public bool EmailVerified { get; set; } = false;

    private static readonly Lazy<Dictionary<string, PropertyInfo>> PropertyCache = new(() =>
    {
        var type = typeof(VmUserInfo);
        return type.GetProperties().ToDictionary(x => x.Name, x => x);
    });

    /// <summary>
    /// Executes GetCanWriteProperties.
    /// </summary>
    public static Dictionary<string, PropertyInfo> GetCanWriteProperties()
    {
        return PropertyCache
            .Value.Where(x => x.Value.CanWrite)
            .ToDictionary(x => x.Key, x => x.Value);
    }

    /// <summary>
    /// Executes Empty.
    /// </summary>
    public static VmUserInfo Empty() =>
        new()
        {
            Id = "",
            Name = "",
            LastAccessTime = DateTime.Now,
            Sign = "",
            Email = "",
            Avatar = "",
            Sex = Sex.Other,
            Permissions = null,
            Enable = true,
            Key = "",
            SessionId = null,
        };
}