30 lines
1.0 KiB
C#
30 lines
1.0 KiB
C#
using ErrorOr;
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using Mediator;
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using Microsoft.EntityFrameworkCore;
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using Musify.Application.Contracts;
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using Musify.Application.Tracks.Responses;
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namespace Musify.Application.Tracks;
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public record GetTrackByIdQuery(Guid TrackId)
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: IQuery<ErrorOr<TrackApplicationResponse>>;
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public class GetTrackByIdQueryHandler(IDatabase database)
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: IQueryHandler<GetTrackByIdQuery, ErrorOr<TrackApplicationResponse>>
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{
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public async ValueTask<ErrorOr<TrackApplicationResponse>> Handle(GetTrackByIdQuery request, CancellationToken cancellationToken)
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{
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var entity = await database.Tracks.AsNoTracking()
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.Include(t => t.Owner)
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.Include(t => t.Tags)
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.Where(t => t.Id == request.TrackId)
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.Select(t => new { Track = t, ListensCount = t.ListeningHistories.Count(l => l.IsCounted) })
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.SingleOrDefaultAsync(cancellationToken);
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if (entity == null)
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return Error.NotFound();
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return TrackApplicationResponse.FromEntity(entity.Track, entity.ListensCount);
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}
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}
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