using AutoMapper;
using FastEndpoints;
using MetaCourse.Api.Data;
using MetaCourse.Api.DTOs.Users;
using MetaCourse.Api.Entities;
using Microsoft.EntityFrameworkCore;

namespace MetaCourse.Api.Endpoints.Users;

public class RegisterEndpoint(AppDbContext db, AutoMapper.IMapper mapper) : Endpoint<RegisterUserDto, GetUserDto>
{
    public override void Configure()
    {
        Post("api/users/register");
        AllowAnonymous();
        Summary(s =>
        {
            s.Summary = "Inscription d'un nouvel utilisateur";
            s.Description = "Crée un compte utilisateur avec email unique et mot de passe haché.";
        });
    }

    public override async Task HandleAsync(RegisterUserDto req, CancellationToken ct)
    {
        var emailExists = await db.Users.AnyAsync(u => u.Email == req.Email, ct);
        if (emailExists)
        {
            AddError(r => r.Email, "Cet email est déjà utilisé.");
            await SendErrorsAsync(409, ct);
            return;
        }

        var user = mapper.Map<User>(req);
        user.PasswordHash = BCrypt.Net.BCrypt.HashPassword(req.Password);

        db.Users.Add(user);
        await db.SaveChangesAsync(ct);

        await SendAsync(mapper.Map<GetUserDto>(user), 201, ct);
    }
}