/// <summary>
/// Writes a ticker symbol's downloaded data to a file
/// </summary>
/// <param name="tradingDate">The date for the trades</param>
/// <param name="buffer">the csv data to be written</param>
/// <param name="directory">the base folder to write the data to. Generally this will be the exchange folder and single letter folder</param>
/// <param name="ticker">the symbol to write. If a folder for the symbols in NYSE\A\{symbol} does not exist it will be created</param>
/// <returns>A generic task for the async call. There is not actual result, but Async/Await does not allow voids.</returns>
public async Task WriteStreamAsync(DateTime tradingDate, string buffer, string directory, string ticker)
{
if (directory.Length == 0)
{
directory = Config.GetDefaultDownloadDirectory();
}
if (!directory.EndsWith(@"\"))
{
directory += @"\";
}
if (ticker.Length == 0)
{
throw new NullReferenceException("Ticker symbol is null");
}
// Add the ticker symbol directory to the \exchange\singleletter\ directory and make sure it exists.
string folder = directory + ticker + @"\";
if (!System.IO.Directory.Exists(folder))
{
System.IO.Directory.CreateDirectory(folder);
}
// Create the dated filename
string filename = FilenameDateFormatter.FormatDt(tradingDate) + "_trade.csv";
// Create the final path for writing the stream
string filepath = folder + filename;
// No point if writing if there is no data in the buffer
// For example, on a bank holiday
if (buffer.Length > 0)
{
// Check to see if the trading day is today,
// and if so overwrite the current day's file.
// If we download during the trading day, we will get the latest day's trades
// up to the amount of delay Google builds into their quote mechanism. (I think 15 minutes)
// If the current hour is after say 4:45 GMT-5 (East Coast time) we will get all of the day's prices
if (tradingDate.Day == DateTime.Now.Day)
{
// If today is Saturday or Sunday, the equity markets are closed.
if (!(DateTime.Now.DayOfWeek == DayOfWeek.Sunday || DateTime.Now.DayOfWeek == DayOfWeek.Saturday))
{
await WriteFileAsync(buffer, filepath, filename);
}
}
// If we write a file in the above if block, we do not need to write it again
// If we have a file in the folder already for a date, we do not need to write it again
if (!File.Exists(filename))
{
await WriteFileAsync(buffer, filepath, filename);
}
}
}
/// <summary>
/// Builds the output file name by check the form's check boxes
/// </summary>
/// <returns>A filename</returns>
private string BuildOutputFilename()
{
StringBuilder sb = new StringBuilder();
//if (textBoxExchange.Text.Length > 0)
// sb.Append(textBoxExchange.Text + "_");
sb.Append(textBoxTicker.Text);
if (checkBoxRawData.Checked)
{
sb.Append("RawData");
}
else if (radioButtonMinutes.Checked)
{
if (checkBoxDateTime.Checked)
{
sb.Append("Milliseconds");
}
else
{
sb.Append("DateTime");
}
}
else if (radioButtonAllData.Checked)
{
//sb.Append("AllData");
}
else if (radioButtonSince.Checked)
{
sb.Append("Since");
DateTime dt = System.Convert.ToDateTime(dateTimePickerSinceDate.Text);
sb.Append(FilenameDateFormatter.FormatDt(dt));
sb.Append("-");
sb.Append(FilenameDateFormatter.FormatDt(DateTime.Now));
}
if (radioButtonLastQuoute.Checked)
{
sb.AppendFormat("_LastQuote_{0}", FilenameDateFormatter.FormatDt(DateTime.Now));
}
sb.Append(".csv");
return(sb.ToString());
}
