public async Task <string> UploadFixtureImageAsync(IFormFile file)
{
bool isImage = false;
try {
isImage = ImageUtils.IsImage(file);
} catch (ArgumentException) {
throw new ArgumentException("Image not valid");
}
if (isImage)
{
string hash = "";
using (var fileStream = file.OpenReadStream()) {
hash = ImageUtils.FileHash(fileStream);
}
// check if already exists
StoredImage existing = await _context.StoredImages.AsNoTracking().SingleOrDefaultAsync(i => i.Hash == hash);
if (existing != default(StoredImage))
{
return(existing.Id);
}
string filePath = Path.Combine("/openld-data/fixture-images", Path.GetRandomFileName());
// convert image to jpeg if necessary, with white background
await ImageUtils.SaveAsJpeg(file, filePath);
StoredImage image = new StoredImage {
Path = filePath, Hash = hash
};
await _context.StoredImages.AddAsync(image);
await _context.SaveChangesAsync();
return(image.Id);
}
else
{
throw new ArgumentException("Image not valid");
}
}
public async Task <StoredImage> CreateSymbolBitmapAsync(string svgPath)
{
string bitmapPath = Path.Combine("/openld-data/fixture-symbol-bitmaps", Path.GetRandomFileName());
ImageUtils.SaveSvgAsPng(svgPath, bitmapPath, 500);
string hash = "";
using (var fileStream = new FileStream(bitmapPath, FileMode.Open, FileAccess.Read)) {
hash = ImageUtils.FileHash(fileStream);
}
StoredImage bitmap = new StoredImage {
Path = bitmapPath, Hash = hash
};
_context.StoredImages.Add(bitmap);
await _context.SaveChangesAsync();
return(bitmap);
}