using System.ComponentModel.DataAnnotations;

namespace Dpz.Core.Auth.Models;

public class ChangePasswordModel : IValidatableObject
{
    /// <summary>
    /// 当前密码
    /// </summary>
    [Required(ErrorMessage = "请输入当前密码")]
    [Display(Name = "当前密码")]
    public string? Password { get; set; }

    /// <summary>
    /// 新密码
    /// </summary>
    [Required(ErrorMessage = "请输入新密码")]
    [StringLength(100, MinimumLength = 8, ErrorMessage = "新密码长度必须在8-100个字符之间")]
    [RegularExpression(
        @"^[\x21-\x7E]{8,}$",
        ErrorMessage = "新密码只能包含ASCII可打印字符，不能包含空格"
    )]
    [Display(Name = "新密码")]
    public string? NewPassword { get; set; }

    /// <summary>
    /// 新密码确认
    /// </summary>
    [Required(ErrorMessage = "请确认新密码")]
    [Display(Name = "确认新密码")]
    public string? NewRepeatPassword { get; set; }

    /// <summary>
    /// 双因素验证码（如已启用）
    /// </summary>
    [StringLength(6, MinimumLength = 6, ErrorMessage = "验证码必须为6位数字")]
    [RegularExpression(@"^\d{6}$", ErrorMessage = "验证码必须为6位数字")]
    [Display(Name = "双因素验证码")]
    public string? PinCode { get; set; }

    /// <summary>
    /// 自定义验证逻辑
    /// </summary>
    public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
    {
        // 验证新密码确认
        if (!string.IsNullOrEmpty(NewPassword) && !string.IsNullOrEmpty(NewRepeatPassword))
        {
            if (NewPassword != NewRepeatPassword)
            {
                yield return new ValidationResult(
                    "新密码与确认密码不匹配",
                    new[] { nameof(NewRepeatPassword) }
                );
            }
        }

        // 验证新密码不能与当前密码相同
        if (!string.IsNullOrEmpty(Password) && !string.IsNullOrEmpty(NewPassword))
        {
            if (Password == NewPassword)
            {
                yield return new ValidationResult(
                    "新密码不能与当前密码相同",
                    new[] { nameof(NewPassword) }
                );
            }
        }
    }
}