using AutoMapper;
using FastEndpoints;
using MetaCourse.Api.Data;
using MetaCourse.Api.DTOs.Courses;
using Microsoft.EntityFrameworkCore;

namespace MetaCourse.Api.Endpoints.Courses;

public class GetCourseRequest
{
    public Guid Id { get; set; }
}

public class GetCourseEndpoint(AppDbContext db, AutoMapper.IMapper mapper) : Endpoint<GetCourseRequest, GetCourseDetailsDto>
{
    public override void Configure()
    {
        Get("api/courses/{id}");
        AllowAnonymous();
        Summary(s => s.Summary = "Récupère le détail d'un cours avec ses sujets et ressources");
    }

    public override async Task HandleAsync(GetCourseRequest req, CancellationToken ct)
    {
        var course = await db.Courses
            .AsNoTracking()
            .Include(c => c.Creator)
            .Include(c => c.Topics.OrderBy(t => t.Position))
                .ThenInclude(t => t.TopicResources.OrderBy(tr => tr.Position))
                    .ThenInclude(tr => tr.Resource)
            .FirstOrDefaultAsync(c => c.Id == req.Id, ct);

        if (course is null)
        {
            await SendNotFoundAsync(ct);
            return;
        }

        await SendOkAsync(mapper.Map<GetCourseDetailsDto>(course), ct);
    }
}