FACULTATE-HEALTHCARE_MANAGER/backend/Application/Endpoints/Doctors/Login/DoctorLoginValidation.cs

using Application.Services.Database;
using FluentValidation;

namespace Application.Endpoints.Doctors.Login
{
    public class DoctorLoginValidation : AbstractValidator<DoctorLoginDTO>
    {
        private readonly IDoctorRepository _doctorRepository;

        public DoctorLoginValidation(IDoctorRepository doctorRepository)
        {
            _doctorRepository = doctorRepository;

            RuleFor(x => x.Email)
                .NotEmpty().WithMessage("Email is required.")
                .EmailAddress().WithMessage("Invalid email format.")
                .MustAsync(BeExistingDoctor).WithMessage("Doctor with this email does not exist.");

            RuleFor(x => x.Password)
                .NotEmpty().WithMessage("Password is required.")
                .MinimumLength(8).WithMessage("Password must be at least 8 characters long.");
        }

        private async Task<bool> BeExistingDoctor(string email, CancellationToken cancellationToken)
        {
            return await _doctorRepository.IsDoctorExisting(email);
        }
    }
}