public async Task <bool> CheckValidLogoAsync(string base64Image)
{
var settings = new LogoGrabSettings
{
ApiUrl = ConfigurationManager.AppSettings["LogoGrab:Url"],
DeveloperKey = ConfigurationManager.AppSettings["LogoGrab:Key"]
};
return(await _logoValidator.ValidateLogoAsync(base64Image, settings));
}
public async Task <bool> ValidateLogoAsync(string imageFilePath, LogoGrabSettings settings)
{
var response = await ServiceHelper.ValidateAsync(settings, imageFilePath);
if (response.Data.Detections[0].ConfidenceALE != null &&
response.Data.Detections[0].ConfidenceALE > 0.5)
{
return(true);
}
if (response.Data.Detections[0].ValidationFlags[0] != null &&
response.Data.Detections[0].ValidationFlags[0] > 0.2)
{
return(true);
}
return(false);
}
public static async Task <LogoGrabResponse> ValidateAsync(LogoGrabSettings settings, string imagePath)
{
if (settings == null)
{
throw new ArgumentNullException(nameof(settings), "LogoGrab settings cannot be null");
}
if (string.IsNullOrEmpty(imagePath))
{
throw new ArgumentNullException("imagePath cannot be null");
}
var apiUrl = new Uri(settings.ApiUrl);
using (var client = new HttpClient(clientHandler, false))
{
client.BaseAddress = apiUrl;
client.DefaultRequestHeaders.Add("X-DEVELOPER-KEY", settings.DeveloperKey);
var imageData = File.ReadAllBytes(imagePath);
var imageFileName = Path.GetFileName(imagePath);
using (var content = new MultipartFormDataContent())
{
content.Add(new StreamContent(new MemoryStream(imageData)), "mediaFile", imageFileName);
string result;
using (var response = await client.PostAsync(apiUrl, content))
{
using (var message = response.Content)
{
result = await message.ReadAsStringAsync();
}
}
return(JsonConvert.DeserializeObject <LogoGrabResponse>(result));
}
}
}
