public static ICalCalendar ParseICalendarFile(string filePath, string countryCode, string countryName)
{
ICalCalendar result = new ICalCalendar(countryCode, countryName);
if (!File.Exists(filePath))
{
throw new FileNotFoundException(string.Format("Could not find {0}.", filePath));
}
if (Path.GetExtension(filePath).Trim().ToLower() != ICALENDAR_FILE_EXTENSION)
{
throw new ArgumentException(string.Format(
"Invalid file extension on iCalendar file. Expected file extension of '{0}'.",
ICALENDAR_FILE_EXTENSION));
}
string calendarText = File.ReadAllText(filePath);
Calendar calendar = Calendar.Load(calendarText);
foreach (CalendarEvent e in calendar.Events)
{
if (e.Class.ToLower() == PUBLIC_HOLIDAY_EVENT_CLASS_NAME) //This is a public holiday event.
{
string name = e.Name;
string eventName = e.Summary;
string description = e.Description;
CalDateTime startDate = e.Start as CalDateTime;
CalDateTime endDate = e.End as CalDateTime;
if (!startDate.HasDate || !endDate.HasDate)
{
continue;
}
result.PublicHolidays.Add(new ICalPublicHoliday(eventName, startDate.Year, startDate.Month, startDate.Day));
}
}
return(result);
}
/// <summary>
/// The country code, start date and end date will be applied to the download URL of this ICalCalendarDownloader.
/// The Country Name is only used for display purposes when constructing the resulting the ICalCalendar.
/// If the output file name is not specified, a temp file path will be generated in the current user's temp folder.
/// Country codes should be supplied as ISO 3166-1 alpha-3 Standard: https://en.wikipedia.org/wiki/ISO_3166-1_alpha-3
/// </summary>
/// <returns></returns>
public ICalCalendar DownloadICalCalendar(
string countryCode,
string countryName,
string startDate,
string endDate,
string outputFilePath,
bool deleteOutputFileAfterParsing)
{
if (string.IsNullOrEmpty(countryCode))
{
throw new NullReferenceException(string.Format("Country Code may not be null or empty when downloading an {0}", typeof(ICalCalendar).Name));
}
if (string.IsNullOrEmpty(countryName))
{
throw new NullReferenceException(string.Format("Country Name may not be null or empty when downloading an {0}", typeof(ICalCalendar).Name));
}
if (string.IsNullOrEmpty(startDate))
{
throw new NullReferenceException(string.Format("Start Date may not be null or empty when downloading an {0}", typeof(ICalCalendar).Name));
}
if (string.IsNullOrEmpty(endDate))
{
throw new NullReferenceException(string.Format("End Date may not be null or empty when downloading an {0}", typeof(ICalCalendar).Name));
}
if (string.IsNullOrEmpty(outputFilePath))
{
string outputFileName = string.Format("{0}-{1}-{2}{3}", countryCode, startDate, endDate, ICalPublicHolidayParser.ICALENDAR_FILE_EXTENSION);
outputFilePath = Path.Combine(Path.GetTempPath(), outputFileName);
}
using (WebClient webClient = new WebClient())
{
string formattedDownloadUrl = string.Format(_downloadUrl, countryCode, startDate, endDate);
if (File.Exists(outputFilePath))
{
File.Delete(outputFilePath);
}
webClient.DownloadFile(formattedDownloadUrl, outputFilePath);
}
ICalCalendar result = ICalPublicHolidayParser.ParseICalendarFile(outputFilePath, countryCode, countryName);
if (deleteOutputFileAfterParsing)
{
File.Delete(outputFilePath);
}
return(result);
}
