public async static Task <IEnumerable <SegmentModel> > LoadSegments(APIConnection api, FileIdentifier identifier)
{
var parser = new VTTFormat();
using (var ms = new MemoryStream())
{
IEnumerable <SegmentModel> segments = null;
await api.File.DownloadAsync(identifier, async (stream, cancel) =>
{
var items = await parser.ParseStreamAsync(stream);
segments = items.Select(i => {
var text = i.Lines != null ? string.Join('\n', i.Lines) : string.Empty;
return(new SegmentModel
{
StartTime = (int)i.StartTime.TotalMilliseconds,
EndTime = (int)i.EndTime.TotalMilliseconds,
Text = text,
TextOriginal = text
});
});
});
return(segments);
}
}
public async Task DeleteInsertAsync(FileIdentifier identifier, TranscriptSet transcriptSetToInsert = null)
{
var rootFile = await Connection.File.GetAsync(identifier);
var oldTranscriptJsonIdentifier = FindViewByName(rootFile, FILENAME_JSON);
var oldTranscriptVttIdentifier = FindViewByName(rootFile, FILENAME_VTT);
FileModel newTranscriptJSONFile = null;
FileModel newTranscriptVTTFile = null;
if (transcriptSetToInsert != null)
{
newTranscriptJSONFile = await CreateHiddenChildFileAsync(
rootFile.Identifier,
FILENAME_JSON,
JsonConvert.SerializeObject(transcriptSetToInsert.Segments),
"application/json"
);
var vttFormat = new VTTFormat();
int segmentIndexNumber = 0;
var vttStringContent = vttFormat.CreateVTT(transcriptSetToInsert.Segments
.Select(s => new SubtitleSegmentModel
{
StartTime = TimeSpan.FromMilliseconds(s.StartTime),
EndTime = TimeSpan.FromMilliseconds(s.EndTime),
Lines = s.Text?.Split('\n').ToList(),
SegmentIndex = ++segmentIndexNumber
}).ToList()
);
newTranscriptVTTFile = await CreateHiddenChildFileAsync(
rootFile.Identifier,
FILENAME_VTT,
vttStringContent,
"text/vtt"
);
}
await Connection.ConcurrencyRetryBlock(async() =>
{
// get the current file
rootFile = await Connection.File.GetAsync(identifier);
ReplaceViewByName(rootFile, FILENAME_JSON, "application/json", newTranscriptJSONFile.Identifier);
ReplaceViewByName(rootFile, FILENAME_VTT, "text/vtt", newTranscriptVTTFile.Identifier);
await Connection.File.PutAsync(rootFile);
});
if (oldTranscriptJsonIdentifier != null)
{
await Connection.File.DeleteAsync(oldTranscriptJsonIdentifier);
}
if (oldTranscriptVttIdentifier != null)
{
await Connection.File.DeleteAsync(oldTranscriptVttIdentifier);
}
}