public void GeneratorName()
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
Assert.AreEqual(gen.Name, nameof(GuidFileNameGenerator));
}
public void NullEmptyWhiteSpaceAppendix(string name, string appendix)
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
var fileName = gen.GetFileName(name, appendix);
Assert.IsTrue(fileName == $"img-{uid}.png");
}
public void LetterCase()
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
var fileName = gen.GetFileName("996 Sucks.PNG", "ICU");
Assert.IsTrue(fileName == $"img-{uid}-icu.png");
}
public void Appendix()
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
var fileName = gen.GetFileName("Microsoft Rocks.png", "origin");
Assert.IsTrue(fileName == $"img-{uid}-origin.png");
}
public void EmptyFileName(string name)
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
Assert.Throws <ArgumentNullException>(() =>
{
gen.GetFileName(name);
});
}
public void TestInvalidFileName(string name)
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
Assert.Catch <ArgumentException>(() =>
{
var fileName = gen.GetFileName(name);
});
}
public void TestNullEmptyWhiteSpaceAppendix()
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
var fileName1 = gen.GetFileName("Choose .NET Core.png", string.Empty);
var fileName2 = gen.GetFileName("And Microsoft Azure.png", null);
var fileName3 = gen.GetFileName("Stay away from 996.png", " ");
Assert.IsTrue(fileName1 == $"img-{uid}.png");
Assert.IsTrue(fileName2 == $"img-{uid}.png");
Assert.IsTrue(fileName3 == $"img-{uid}.png");
}
public void TestInvalidFileName()
{
var uid = Guid.NewGuid();
var gen = new GuidFileNameGenerator(uid);
Assert.Catch <ArgumentException>(() =>
{
var fileName = gen.GetFileName("007 Stupid");
});
Assert.Catch <ArgumentException>(() =>
{
var fileName = gen.GetFileName(".icu");
});
Assert.Catch <ArgumentNullException>(() =>
{
var fileName = gen.GetFileName(" ");
});
}
public async Task <IActionResult> UploadImageAsync(IFormFile file)
{
try
{
if (null == file)
{
Logger.LogError("file is null.");
return(BadRequest());
}
if (file.Length > 0)
{
var name = Path.GetFileName(file.FileName);
if (name == null)
{
return(BadRequest());
}
var ext = Path.GetExtension(name).ToLower();
var allowedImageFormats = new[] { ".png", ".jpg", ".jpeg", ".bmp", ".gif" };
if (!allowedImageFormats.Contains(ext))
{
Logger.LogError($"Invalid file extension: {ext}");
return(BadRequest());
}
var uid = Guid.NewGuid();
IFileNameGenerator gen = new GuidFileNameGenerator(uid);
var primaryFileName = gen.GetFileName(name);
var secondaryFieName = gen.GetFileName(name, "origin");
using (var stream = new MemoryStream())
{
await file.CopyToAsync(stream);
// Add watermark
MemoryStream watermarkedStream = null;
if (_blogConfig.WatermarkSettings.IsEnabled && ext != ".gif")
{
var watermarker = new ImageWatermarker(stream, ext)
{
SkipWatermarkForSmallImages = true,
SmallImagePixelsThreshold = Constants.SmallImagePixelsThreshold
};
Logger.LogInformation($"Adding watermark onto image {primaryFileName}");
watermarkedStream = watermarker.AddWatermark(
_blogConfig.WatermarkSettings.WatermarkText,
Color.FromArgb(128, 128, 128, 128),
WatermarkPosition.BottomRight,
15,
_blogConfig.WatermarkSettings.FontSize);
}
var response = await _imageStorageProvider.InsertAsync(primaryFileName,
watermarkedStream != null?
watermarkedStream.ToArray() :
stream.ToArray());
if (_blogConfig.WatermarkSettings.KeepOriginImage)
{
var arr = stream.ToArray();
_ = Task.Run(async() => await _imageStorageProvider.InsertAsync(secondaryFieName, arr));
}
Logger.LogInformation("Image Uploaded: " + JsonConvert.SerializeObject(response));
if (response.IsSuccess)
{
return(Json(new { location = $"/uploads/{response.Item}" }));
}
Logger.LogError(response.Message);
return(ServerError());
}
}
return(BadRequest());
}
catch (Exception e)
{
Logger.LogError(e, "Error uploading image.");
return(ServerError());
}
}
