using FastEndpoints;
using MetaCourse.Api.Data;
using MetaCourse.Api.DTOs.Progress;
using MetaCourse.Api.Entities;
using Microsoft.EntityFrameworkCore;

namespace MetaCourse.Api.Endpoints.Progress;

public class MarkTopicProgressEndpoint(AppDbContext db) : Endpoint<MarkTopicProgressDto>
{
    public override void Configure()
    {
        Post("api/topics/{topicId}/progress");
        AllowAnonymous();
        Summary(s => s.Summary = "Marque un sujet comme terminé ou non terminé pour un utilisateur");
    }

    public override async Task HandleAsync(MarkTopicProgressDto req, CancellationToken ct)
    {
        var progress = await db.UserTopicProgresses
            .FirstOrDefaultAsync(p => p.UserId == req.UserId && p.TopicId == req.TopicId, ct);

        if (progress is null)
        {
            db.UserTopicProgresses.Add(new UserTopicProgress
            {
                UserId = req.UserId,
                TopicId = req.TopicId,
                Completed = req.Completed,
                CompletedAt = req.Completed ? DateTime.UtcNow : null
            });
        }
        else
        {
            progress.Completed = req.Completed;
            progress.CompletedAt = req.Completed ? DateTime.UtcNow : null;
        }

        await db.SaveChangesAsync(ct);
        await SendNoContentAsync(ct);
    }
}