using Atomx.Admin.Client.Models;
using FluentValidation;
using Microsoft.Extensions.Localization;

namespace Atomx.Admin.Client.Validators
{
    public class LoginModelValidator : AbstractValidator<LoginModel>
    {
        public LoginModelValidator(IStringLocalizer<LoginModelValidator> localizer)
        {
            // helper funcs to get localized text or fallback
            string AccountEmpty() => localizer?["Login.Account.Empty"].Value ?? "登录账号不能为空";
            string AccountLength() => localizer?["Login.Account.Length"].Value ?? "用户名长度必须再2-100个字符之间";
            string PasswordEmpty() => localizer?["Login.Password.Empty"].Value ?? "请输入登录密码";
            string PasswordLength() => localizer?["Login.Password.Length"].Value ?? "登录密码必须在6-32位长度之间";

            RuleFor(p => p.Account)
                .NotEmpty()
                .WithMessage(_ => AccountEmpty());

            RuleFor(p => p.Account)
                .Length(2, 100)
                .When(p => !string.IsNullOrEmpty(p.Account))
                .WithMessage(_ => AccountLength());

            RuleFor(p => p.Password)
                .NotEmpty()
                .WithMessage(_ => PasswordEmpty());

            RuleFor(p => p.Password)
                .Length(6, 32)
                .When(p => !string.IsNullOrEmpty(p.Password))
                .WithMessage(_ => PasswordLength());
        }

        public Func<object, string, Task<IEnumerable<string>>> ValidateValue => async (model, propertyName) =>
        {
            var result = await ValidateAsync(ValidationContext<LoginModel>.CreateWithOptions((LoginModel)model, x => { x.IncludeProperties(propertyName); }));
            if (result.IsValid)
                return Array.Empty<string>();
            return result.Errors.Select(e => e.ErrorMessage);
        };
    }
}