public static InternetArchiveFile GetMiddleAssociatedThumbnailFile(
InternetArchiveItem iaItem,
InternetArchiveFile iaFile)
{
var associatedThumbnailFiles = GetAssociatedThumbnailFiles(iaItem, iaFile)
.ToArray();
var centerIndex = (int)Math.Floor(associatedThumbnailFiles.Length / 2d);
return(associatedThumbnailFiles[centerIndex]);
}
public static string GetPrimaryAssociatedThumbnailFileUrl(
InternetArchiveFile iaFile)
{
var fileNameWithoutExtension = iaFile.FileName.RemoveFileExtension();
var groupIndex = iaFile.OwnerArchiveItem.Identifier.Replace("emj-archive-", "");
var expectedThumbnailName = $"{groupIndex}.{fileNameWithoutExtension}.thumbs.primary.jpg";
var expectedThumbnailUrlUnEncoded =
$"https://archive.org/download/emj-archive-thumbs-primary/{expectedThumbnailName}";
var expectedThumbnailUrl = expectedThumbnailUrlUnEncoded.UrlEncode();
return(expectedThumbnailUrl);
}
public static IEnumerable <InternetArchiveFile> GetAssociatedThumbnailFiles(
InternetArchiveItem iaItem,
InternetArchiveFile iaFile)
{
var thumbnailFiles = ArchiveFileInterpreter.ScrapeArchiveThumbnailFiles(iaItem);
foreach (var thumbnailFile in thumbnailFiles)
{
var thumbnailFileName = thumbnailFile.Title.RemoveFileExtension();
var videoFileName = iaFile.Title.RemoveFileExtension();
if (thumbnailFileName.StartsWith(videoFileName))
{
yield return(thumbnailFile);
}
}
}