36 lines
1.4 KiB
C#
36 lines
1.4 KiB
C#
using Musify.Application.Configuration;
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using Musify.Application.Contracts;
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using Musify.Application.Tracks.Responses;
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namespace Musify.Application.Services;
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/// <summary>Builds the stream URL and signed ticket for a processed track. It never touches the database.</summary>
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public sealed class TrackStreamIssuer(
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IStreamTicketService ticketService,
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TrackConfiguration trackConfiguration,
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StreamGatewayConfiguration streamGatewayConfiguration,
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PlaybackConfiguration playbackConfiguration)
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{
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public TrackStreamResponse Issue(string audioFolderName, long? userId, Guid? listenId)
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{
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var folderPath = trackConfiguration.Routes.BuildProcessedAudioPath(audioFolderName);
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var ticket = ticketService.IssueTicket(userId, $"{folderPath}/", AnonymousFragmentBytes(userId));
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var manifestUrl = string.Join('/',
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streamGatewayConfiguration.PublicBaseUrl.TrimEnd('/'),
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"media",
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folderPath,
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streamGatewayConfiguration.AudioFileName);
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return new TrackStreamResponse(manifestUrl, ticket.Token, ticket.ExpiresInSeconds, listenId);
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}
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private long? AnonymousFragmentBytes(long? userId)
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{
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if (userId != null || playbackConfiguration.AnonymousFragmentSeconds <= 0)
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return null;
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return (long)playbackConfiguration.AnonymousFragmentSeconds * playbackConfiguration.EstimatedAudioBytesPerSecond;
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}
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}
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