freetubesync/FreeTubeSync/EndPoints/PlaylistEndpoint.cs

using FreeTubeSync.Database;
using FreeTubeSync.Model.Database;
using FreeTubeSync.Model.Json;

namespace FreeTubeSync.EndPoints;

public static class PlaylistEndpoint
{
    public static void MapPlaylistEndpoints(this WebApplication app)
    {
        var group = app.MapGroup("playlists");

        group.MapGet("/", async (IRepository<Playlist> repository, CancellationToken ct) =>
        {
            var results = (await repository.GetAllAsync(ct)).ToList();
            var jsonResults = new List<PlaylistJson>();
            results.MapTo(jsonResults);
            for (var i = 0; i < jsonResults.Count; i++)
                results[i].videos.MapTo(jsonResults[i].videos);
            
            return Results.Ok(jsonResults);
        });

        group.MapPost("/", async (IRepository<Playlist> repository, IRepository<Video> vidRepo, CancellationToken ct, PlaylistJson playlistJson) =>
        {
            var results = await repository.GetByIdAsync(playlistJson._id, ct);
            if (results == null)
            {
                results = new Playlist();
                results.MapFrom(playlistJson);
                foreach (var video in playlistJson.videos)
                {
                    var vid = new Video();
                    vid.MapFrom(video);
                    await vidRepo.AddAsync(vid, ct, false);
                }
                await repository.AddAsync(results, ct);
            }
            else
            {
                results.MapFrom(playlistJson);

                var remove = results.videos.Where(video => playlistJson.videos.All(x => x.playlistItemId != video.playlistItemId)).ToList();
                var add = playlistJson.videos.Where(video => results.videos.All(x => x.playlistItemId != video.playlistItemId)).ToList();
                var vids = new List<Video>();
                foreach (var video in remove)
                {
                    await vidRepo.DeleteAsync(video, ct, false);
                }

                foreach (var video in add)
                {
                    var vid = new Video();
                    vid.MapFrom(video);
                    await vidRepo.AddAsync(vid, ct, false);
                    vids.Add(vid);
                }

                results.videos.RemoveAll(x => remove.Contains(x));
                results.videos.AddRange(vids);

                await repository.UpdateAsync(results, ct);
            }

            return Results.Ok();
        });

        group.MapDelete("/{id}", async (IRepository<Playlist> repository, CancellationToken ct, string id) =>
        {
            var result = await repository.GetByIdAsync(id, ct);
            if (result == null) return Results.NotFound();
            await repository.DeleteAsync(result, ct);
            return Results.Ok();
        });
    }
}