79 lines
2.2 KiB
C#
79 lines
2.2 KiB
C#
using System;
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using System.Threading;
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using System.Threading.Tasks;
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using Dinah.Core.Net.Http;
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using Dinah.Core.StepRunner;
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using FileManager;
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namespace AaxDecrypter
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{
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public class UnencryptedAudiobookDownloader : AudiobookDownloadBase
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{
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protected override StepSequence Steps { get; }
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public UnencryptedAudiobookDownloader(string outFileName, string cacheDirectory, IDownloadOptions dlLic)
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: base(outFileName, cacheDirectory, dlLic)
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{
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Steps = new StepSequence
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{
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Name = "Download Mp3 Audiobook",
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["Step 1: Get Mp3 Metadata"] = Step_GetMetadata,
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["Step 2: Download Audiobook"] = Step_DownloadAudiobookAsSingleFile,
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["Step 3: Create Cue"] = Step_CreateCue,
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["Step 4: Cleanup"] = Step_Cleanup,
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};
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}
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public override Task CancelAsync()
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{
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IsCanceled = true;
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CloseInputFileStream();
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return Task.CompletedTask;
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}
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protected bool Step_GetMetadata()
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{
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OnRetrievedCoverArt(null);
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return !IsCanceled;
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}
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private bool Step_DownloadAudiobookAsSingleFile()
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{
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DateTime startTime = DateTime.Now;
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// MUST put InputFileStream.Length first, because it starts background downloader.
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while (InputFileStream.Length > InputFileStream.WritePosition && !InputFileStream.IsCancelled)
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{
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var rate = InputFileStream.WritePosition / (DateTime.Now - startTime).TotalSeconds;
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var estTimeRemaining = (InputFileStream.Length - InputFileStream.WritePosition) / rate;
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if (double.IsNormal(estTimeRemaining))
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OnDecryptTimeRemaining(TimeSpan.FromSeconds(estTimeRemaining));
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var progressPercent = (double)InputFileStream.WritePosition / InputFileStream.Length;
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OnDecryptProgressUpdate(
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new DownloadProgress
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{
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ProgressPercentage = 100 * progressPercent,
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BytesReceived = (long)(InputFileStream.Length * progressPercent),
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TotalBytesToReceive = InputFileStream.Length
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});
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Thread.Sleep(200);
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}
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CloseInputFileStream();
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var realOutputFileName = FileUtility.SaferMoveToValidPath(InputFileStream.SaveFilePath, OutputFileName, DownloadOptions.ReplacementCharacters);
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SetOutputFileName(realOutputFileName);
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OnFileCreated(realOutputFileName);
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return !IsCanceled;
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}
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}
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}
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