public ActionResult Index(VehicleSalesModel viewModel)
{
var builder = new IndexBuilder(viewModel.FileUpload);
builder.Build(ModelState, viewModel);
return(View(viewModel));
}
// Build the Index view parsing the csv file
internal void Build(ModelStateDictionary modelState, VehicleSalesModel viewModel)
{
if (modelState.IsValid == false)
{
return;
}
if (FileUpload != null && FileUpload.ContentLength > 0)
{
if (FileUpload.FileName.EndsWith(".csv"))
{
// read file data to string
string csvData = StreamToString(FileUpload.InputStream);
if (string.IsNullOrEmpty(csvData))
{
modelState.AddModelError("File", "File is empty");
return;
}
// read csv to model
viewModel.SalesList = ReadCSVFile(csvData);
if (viewModel.SalesList == null || viewModel.SalesList.Count() <= 0)
{
modelState.AddModelError("File", "File error");
return;
}
// get vehicle sent most often
viewModel.MostSoldVehicle = GetMostSoldVehicle(viewModel.SalesList);
}
else
{
modelState.AddModelError("File", "This file format is not supported");
}
}
else
{
modelState.AddModelError("File", "Please Upload Your file");
}
}
