using MediatR;
using Nashel.Modules.Identity.Domain.Aggregates;
using Nashel.Modules.Identity.Domain.Enums;
using Nashel.Modules.Identity.Domain.Repositories;
using Nashel.Modules.Identity.Domain.Services;

namespace Nashel.Modules.Identity.Application.Commands;

/// <summary>
/// Команда входа пользователя.
/// </summary>
public record LoginCommand : IRequest<string>
{
    /// <summary>
    /// Номер телефона.
    /// </summary>
    public string Phone { get; init; } = default!;

    /// <summary>
    /// Пароль.
    /// </summary>
    public string Password { get; init; } = default!;

    public LoginCommand(string phone, string password)
    {
        Phone = phone;
        Password = password;
    }

    public LoginCommand() { }
} // Возвращает JWT

public class LoginCommandHandler : IRequestHandler<LoginCommand, string>
{
    private readonly IAccountRepository _accountRepository;
    private readonly IJwtTokenGenerator _jwtTokenGenerator;
    private readonly IPasswordHasher _passwordHasher;

    public LoginCommandHandler(
        IAccountRepository accountRepository, 
        IJwtTokenGenerator jwtTokenGenerator,
        IPasswordHasher passwordHasher)
    {
        _accountRepository = accountRepository;
        _jwtTokenGenerator = jwtTokenGenerator;
        _passwordHasher = passwordHasher;
    }

    public async Task<string> Handle(LoginCommand request, CancellationToken cancellationToken)
    {
        var account = await _accountRepository.GetByPhoneAsync(request.Phone, cancellationToken);
        if (account == null || !_passwordHasher.VerifyPassword(request.Password, account.PasswordHash))
        {
            throw new Exception("Неверные учетные данные");
        }

        return _jwtTokenGenerator.GenerateToken(account.Id, account.Roles);
    }
}