public async Task <int?> GetMaximumAllowedPointsAsync(int siteId)
{
var(IsSet, SetValue) = await _siteLookupService.GetSiteSettingIntAsync(siteId,
SiteSettingKey.Challenges.MaxPointsPerChallengeTask);
return(IsSet ? SetValue : (int?)null);
}
public async Task ValidateBadgeImageAsync(byte[] badgeImage)
{
var(IsSet, SetValue) = await _siteLookupService
.GetSiteSettingIntAsync(GetCurrentSiteId(), SiteSettingKey.Badges.MaxFileSize);
if (IsSet && badgeImage != null && badgeImage.Length > SetValue * KBSize)
{
throw new GraException($"File size exceeds the maximum of {SetValue}KB");
}
try
{
using var image = Image.Load(badgeImage);
if (image.Height != image.Width)
{
throw new GraException("Image must be square.");
}
}
catch (UnknownImageFormatException uifex)
{
throw new GraException("Unknown image type, please upload a JPEG or PNG image.",
uifex);
}
}
private async Task <string> WriteBadgeFileAsync(Badge badge,
byte[] imageFile,
ImageType?imageType)
{
string extension = imageType.HasValue
? "." + imageType.ToString().ToLowerInvariant()
: Path.GetExtension(badge.Filename).ToLowerInvariant();
string filename = $"badge{badge.Id}{extension}";
string fullFilePath = GetFilePath(filename);
using (var image = Image.Load(imageFile))
{
var(IsSet, SetValue) = await _siteLookupService.GetSiteSettingIntAsync(
GetCurrentSiteId(),
SiteSettingKey.Badges.MaxDimension);
int maxDimension = IsSet
? SetValue
: DefaultMaxDimension;
if (image.Width > maxDimension || image.Height > maxDimension)
{
_logger.LogInformation("Resizing badge file {BadgeFile}", fullFilePath);
var sw = Stopwatch.StartNew();
image.Mutate(_ => _.Resize(maxDimension,
maxDimension,
KnownResamplers.Lanczos3));
if (image.Metadata != null)
{
image.Metadata.ExifProfile = null;
image.Metadata.IccProfile = null;
image.Metadata.IptcProfile = null;
}
switch (extension)
{
case "jpg":
case "jpeg":
await image.SaveAsJpegAsync(fullFilePath, new JpegEncoder
{
Quality = 77
});
break;
default:
await image.SaveAsPngAsync(fullFilePath, new PngEncoder
{
CompressionLevel = PngCompressionLevel.BestCompression,
IgnoreMetadata = true
});
break;
}
_logger.LogInformation("Image resize and save of {Filename} took {Elapsed} ms",
filename,
sw.ElapsedMilliseconds);
}
else
{
_logger.LogDebug("Writing out badge file {BadgeFile}", fullFilePath);
File.WriteAllBytes(fullFilePath, imageFile);
}
return(GetUrlPath(filename));
}
}