public async Task <IActionResult> GetContinuedFractionResponse([FromBody] ContinuedFractionRequest rqst)
{
var contFracResp = await _algorithmService.GetContinuedFractionExpansion(rqst);
if (contFracResp == null)
{
return(BadRequest(new { message = "Bad Request." }));
}
return(Ok(contFracResp));
}
public async Task <ContinuedFractionResponse> GetContinuedFractionExpansion(ContinuedFractionRequest rqst)
{
if (string.IsNullOrWhiteSpace(GlobalVariables.CPP_AppPath) || !File.Exists(GlobalVariables.CPP_AppPath))
{
throw new NotImplementedException();
}
if (rqst.Number == 0 || rqst.Count == 0)
{
return(new ContinuedFractionResponse()
{
ServerResponse = "Missing or invalid inputs."
});
}
string filename = string.Format("{0}.json", Guid.NewGuid().ToString()); //cant use a static filename when the server is processing multiple requests
var info = new ProcessStartInfo(GlobalVariables.CPP_AppPath);
info.CreateNoWindow = true;
info.Arguments = string.Format("{0} {1} {2} /s", rqst.Number, rqst.Count, filename);
var p = Process.Start(info);
p.WaitForExit();
ContinuedFractionResponse resp = null;
if (File.Exists(filename))
{
//the c++ program wont output anything if there were problems
using (var sr = new StreamReader(filename))
{
var jsonString = await sr.ReadToEndAsync();
try
{
resp = JsonConvert.DeserializeObject <ContinuedFractionResponse>(jsonString);
}
catch (Exception ex)
{
resp = new ContinuedFractionResponse()
{
ServerResponse = ex.Message
};
}
}
//delete the file now to save room when processing multiple requests
try
{
File.Delete(filename);
}
catch (Exception ex)
{
}
}
else
{
resp = new ContinuedFractionResponse()
{
ServerResponse = "There was an issue processing the request."
};
}
return(resp);
}
