/// <summary>
/// Asycronously downloads and returns quotes for a given company <paramref name="tickerSymbol"/>, up to a max range.
/// </summary>
/// <param name="tickerSymbol">The symbol of the company to store the quotes for.</param>
/// <param name="startDate">The beginning date of the day quotes that are returned.</param>
/// <returns>Returns the downloaded quotes for the given company <paramref name="tickerSymbol"/>.</returns>
public async Task <IEnumerable <Q> > GetDayQuotesForCompanyAsync(string tickerSymbol, DateTime startDate)
{
if (_isDisposed)
{
throw new ObjectDisposedException("MarketService", "The service has been disposed.");
}
if (string.IsNullOrEmpty(tickerSymbol))
{
throw new ArgumentNullException(nameof(tickerSymbol));
}
var currentDate = SystemTime.Now().Date;
if (startDate > currentDate)
{
throw new ArgumentException("Invalid start date supplied. Start date cannot be greater than the current date.");
}
// Retrieve the existing company using the ticker symbol so each quote can be updated with it.
var existingCompany = _companyService.FindCompany(tickerSymbol);
return(await Task.Run(() =>
{
// Download quotes in chunks based off the date difference between the last stored quote date and today's date.
var downloadedQuotes = startDate.AddDays(1) >= currentDate ? new[] { _downloader.DownloadPreviousDayQuote(tickerSymbol) } :
startDate.AddDays(5) >= currentDate ? _downloader.DownloadQuotesFiveDays(tickerSymbol) :
startDate.AddMonths(1) >= currentDate ? _downloader.DownloadQuotesOneMonth(tickerSymbol) :
startDate.AddMonths(3) >= currentDate ? _downloader.DownloadQuotesThreeMonths(tickerSymbol) :
startDate.AddMonths(5) >= currentDate ? _downloader.DownloadQuotesFiveMonths(tickerSymbol) :
startDate.AddYears(1) >= currentDate ? _downloader.DownloadQuotesOneYear(tickerSymbol) :
startDate.AddYears(2) >= currentDate ? _downloader.DownloadQuotesTwoYears(tickerSymbol) :
_downloader.DownloadQuotesTwoYears(tickerSymbol);
// Attach the company to the newly downloaded quotes if it exists.
if (existingCompany != null)
{
downloadedQuotes = downloadedQuotes.ToList().ForEach <Q>(q => { q.Company = existingCompany; q.CompanyId = existingCompany.Id; });
}
return downloadedQuotes.OrderBy(q => q.Date);
}));
}
public void DownloadQuotesThreeMonths_WithInvalidSymbol_ThrowsException()
{
// Act
_downloader.DownloadQuotesThreeMonths(null);
}