public ShrinkMessage(ShrinkImage image, DateTimeOffset when)
{
CheckIsNotNull(nameof(image), image);
When = _when;
_image = image;
}
public async Task <ShrunkImage> Shrink(ShrinkImage image)
{
CheckIsNotNull(nameof(image), image);
ShrunkImage result;
try
{
result = await ShrinkImageAsync(image, _d.Settings);
}
catch (Exception ex)
{
_d.Logger.LogError(ex.Message);
throw;
}
return(result);
}
public ShrinkMessage(string folder, string fileName, string imageUrl, DateTimeOffset when)
{
When = _when;
_image = new ShrinkImage(folder, fileName, imageUrl);
}
public static async Task <ShrunkImage> ShrinkImageAsync(ShrinkImage image, AppSettings settings)
{
CheckIsNotNull(nameof(image), image);
CheckIsNotNull(nameof(settings), settings);
ShrunkImage result;
var filesToDelete = new List <FileInfo>();
try
{
string fileExtension = GetImageExtension(image.ImageUrl);
var fileToShrink = new FileInfo(image.FileName);
filesToDelete.Add(fileToShrink);
// Download image
var downloadPsi = new ProcessStartInfo {
FileName = "curl"
};
downloadPsi.Arguments = $@"{image} -o {fileToShrink}";
using (var download = Process.Start(downloadPsi))
{
download.Start();
download.WaitForExit();
download.EnsureSuccess();
}
// Shrink image
var filename = GetFileNameWithNewExtension(image.FileName, ".webp");
var shrunkFile = new FileInfo(filename);
filesToDelete.Add(shrunkFile);
var convertPsi = new ProcessStartInfo {
FileName = "cwebp"
};
convertPsi.Arguments = $@"{fileToShrink} -q 75 -o {shrunkFile}";
using (var shrink = Process.Start(convertPsi))
{
shrink.Start();
shrink.WaitForExit();
shrink.EnsureSuccess();
}
Uri shrunkUri;
using (var stream = shrunkFile.OpenRead())
{
shrunkUri = await UploadBlobAsync(settings.StorageAccount, "images", $"{image.Folder}/{shrunkFile.Name}", stream, contentType : "image/webp");
}
result = new ShrunkImage(image.ImageUrl, shrunkUri.ToString(), image.Folder);
}
finally
{
// Delete all files created during this operation
filesToDelete.EnsureDelete();
}
return(result);
}