private static Task HandleErrorAsync(HttpContext context, Exception exception)
{
var statusCode = HttpStatusCode.BadRequest;
var response = new QrResponseModel
{
Data = null,
Error = exception.Message
};
var payload = JsonSerializer.Serialize(response);
context.Response.ContentType = "application/json";
context.Response.StatusCode = (int)statusCode;
return(context.Response.WriteAsync(payload));
}
public async Task <QrResponseModel> ScanQrAsync(string qrPath)
{
_logger.LogTrace($"{TAG} ScanQrAsync called with path: {qrPath}");
if (string.IsNullOrWhiteSpace(qrPath))
{
throw new ArgumentException("The path cannot be null or empty.");
}
var cacheKey = new QrCacheKey(qrPath);
var cachedResponse = await _cacheStore.GetAsync <QrResponseModel>(cacheKey);
if (cachedResponse != null)
{
_logger.LogTrace($"{TAG} Returning response found in cache.");
return(cachedResponse);
}
QrFileModel file = null;
try
{
file = await _provider.ProvideQrAsync(qrPath);
}
catch (Exception e)
{
_logger.LogError($"{TAG} Provider call failed. Reason: '{e.Message}'.");
throw;
}
QrResponseModel result = null;
try
{
result = await _client.PostQrAsync(file);
}
catch (Exception e)
{
_logger.LogError($"{TAG} QR api call failed. Reason: '{e.Message}'.");
throw;
}
await _cacheStore.AddAsync(cacheKey, result);
return(result);
}