48 lines
1.9 KiB
C#
48 lines
1.9 KiB
C#
using ErrorOr;
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using Mediator;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.Extensions.Logging;
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using Musify.Application.Configuration;
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using Musify.Application.Contracts;
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using Musify.Application.Services;
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using Musify.Application.Tracks.Responses;
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using Musify.Domain.ValueObjects;
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using Musify.Application.Shared;
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namespace Musify.Application.Tracks;
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public record GetTrackStreamQuery(Guid TrackId, long? UserId)
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: IQuery<ErrorOr<TrackStreamResponse>>;
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public class GetTrackStreamQueryHandler(
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IDatabase database,
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TrackStreamIssuer streamIssuer,
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PlaybackConfiguration playbackConfiguration,
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ILogger<GetTrackStreamQueryHandler> logger)
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: IQueryHandler<GetTrackStreamQuery, ErrorOr<TrackStreamResponse>>
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{
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public async ValueTask<ErrorOr<TrackStreamResponse>> Handle(GetTrackStreamQuery request, CancellationToken cancellationToken)
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{
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if (request.UserId == null && !playbackConfiguration.AllowAnonymousListening)
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return Error.Unauthorized(description: "Sign in to stream music, or ask an administrator to enable anonymous listening.");
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var track = await database.Tracks.AsNoTracking()
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.Where(t => t.Id == request.TrackId && t.LifeCycleStatus == LifeCycleStatus.Active)
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.Select(t => new { t.Id, t.Audio })
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.SingleOrDefaultAsync(cancellationToken);
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if (track == null)
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return AppErrors.NotFound("Track", request.TrackId);
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if (!track.Audio.IsProcessed)
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return AppErrors.Conflict("Track.AudioNotReady", "Track audio is not available for streaming yet.");
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var response = await streamIssuer.IssueAsync(track.Id, track.Audio.FolderName, request.UserId, cancellationToken);
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logger.LogInformation("Issued stream ticket for track {TrackId} to user {UserId}", request.TrackId, request.UserId?.ToString() ?? "(anonymous)");
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return response;
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}
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}
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