public void ValidateData()
{
switch (this._currentStage)
{
case ProcessStage.Start:
throw new System.InvalidOperationException("Can't validate without initializing");
case ProcessStage.Init:
string fileContents = FileManager.ReadFile(this._formFile);
DailyStockPrice[] parsedData;
this.validationResult = ParseData(fileContents, out parsedData);
if (this.validationResult.isValid)
{
DailyStockPrice[] orderedData = parsedData.OrderBy(d => d.price).ToArray();
this.buyDayAndPrice = orderedData.First();
this.sellDayAndPrice = orderedData.Last();
}
this._currentStage = ProcessStage.Validation;
break;
case ProcessStage.Validation:
case ProcessStage.SaveFile:
case ProcessStage.SaveReport:
default:
throw new System.InvalidOperationException("Validation done already");
}
}
public FileViewModel()
{
this.originalFileName = "";
this.tempFileName = "";
this.validationResult = new ValidationResult();
this.buyDayAndPrice = new DailyStockPrice();
this.sellDayAndPrice = new DailyStockPrice();
this._currentStage = ProcessStage.Start;
}
public FileViewModel(IFormFile fl)
{
this._formFile = fl;
this.originalFileName = this._formFile.FileName;
this.tempFileName = FileManager.GetTempFileName(this._formFile.FileName);
this.validationResult = new ValidationResult();
this.buyDayAndPrice = new DailyStockPrice();
this.sellDayAndPrice = new DailyStockPrice();
this._currentStage = ProcessStage.Init;
}
private ValidationResult ParseData(string fileContents, out DailyStockPrice[] parsedData)
{
ValidationResult retVal = new ValidationResult();
parsedData = new DailyStockPrice[NumberOfDays];
string[] tokens = fileContents.Split(",");
if (tokens.Length == NumberOfDays)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < tokens.Length; i++)
{
decimal parsedDataCell = 0;
bool isParsable = decimal.TryParse(tokens[i], out parsedDataCell);
if (isParsable)
{
DailyStockPrice dailyStockPrice = new DailyStockPrice()
{
day = i + 1,
price = parsedDataCell
};
parsedData[i] = dailyStockPrice;
}
else
{
sb.AppendFormat("Column #{0}({1}),", i + 1, tokens[i]);
}
}
if (sb.Length > 0)
{
string errorMsg = sb.ToString();
retVal.isValid = false;
retVal.message = string.Format(
"{0} {1} not parsable",
errorMsg.Substring(0, errorMsg.Length - 1),
sb.Length == 1 ? "is" : "are");
}
else
{
retVal.isValid = true;
retVal.message = "Data is valid";
}
}
else
{
retVal.isValid = false;
retVal.message = string.Format("Please load {0} days' data", NumberOfDays);
}
return(retVal);
}
