Admin
6e2f3a257a
Drop the now-redundant Track.Artist string column now that every track (local and YouTube) links its credited artists through TrackArtist. TrackApplicationResponse formats the display string by joining TrackArtists ordered by position, and every read query that projects a track now includes TrackArtists/Artist so the join isn't empty at response time.
31 lines
1.1 KiB
C#
31 lines
1.1 KiB
C#
using ErrorOr;
|
|
using Mediator;
|
|
using Microsoft.EntityFrameworkCore;
|
|
using Musify.Application.Contracts;
|
|
using Musify.Application.Tracks.Responses;
|
|
|
|
namespace Musify.Application.Tracks
|
|
{
|
|
public record GetTrackByIdQuery(Guid TrackId)
|
|
: IQuery<ErrorOr<TrackApplicationResponse>>;
|
|
|
|
public class GetTrackByIdQueryHandler(IDatabase database)
|
|
: IQueryHandler<GetTrackByIdQuery, ErrorOr<TrackApplicationResponse> >
|
|
{
|
|
public async ValueTask<ErrorOr<TrackApplicationResponse>> Handle(GetTrackByIdQuery request, CancellationToken cancellationToken)
|
|
{
|
|
var entity = await database.Tracks.AsNoTracking()
|
|
.Include(t => t.TrackArtists)
|
|
.ThenInclude(trackArtist => trackArtist.Artist)
|
|
.Where(t => t.Id == request.TrackId)
|
|
.Select(t => new { Track = t, ListensCount = t.ListeningHistories.Count })
|
|
.SingleOrDefaultAsync(cancellationToken);
|
|
|
|
if (entity is null)
|
|
return Error.NotFound();
|
|
|
|
return TrackApplicationResponse.FromEntity(entity.Track, entity.ListensCount);
|
|
}
|
|
}
|
|
}
|