/// <summary>
/// Filter events in loaded VCalendar based on provided filtering options
/// </summary>
/// <param name="filter"></param>
public void Filter(FilteringOptions filter)
{
if (filter.PredictEventDuration)
this.PredictEventDuration(filter.RemoveEventDurationFromTitle);
if (filter.HideAllDayEvents)
this.HideAllDayEvents(); // should be called before shortenig events
IList<string> projectsToSkip = filter.ProjectsToSkip;
if (projectsToSkip.Count > 0)
{
this.SkipEventsFromProjects(projectsToSkip);
}
if (filter.ShortenEvents)
this.ShortenEvents();
if (!String.IsNullOrEmpty(filter.HideEventsContainingThisString))
this.HideEventsContainingString(filter.HideEventsContainingThisString);
if (filter.ShortenEventsLongerThanThisMinutes > 0 && filter.ShortenEventsLongerThanToThisMinutes > 0)
this.ShortenEvents(filter.ShortenEventsLongerThanThisMinutes, filter.ShortenEventsLongerThanToThisMinutes);
if (filter.HideEventsShorterThanMinutes > 0)
this.HideEventsShorterThanMinutes(filter.HideEventsShorterThanMinutes);
}
/// <summary>
/// Parses parameters provided by user in QueryString, downloads calendar, filters events based on known rules
/// </summary>
/// <returns></returns>
public ActionResult Filter()
{
using (WebClient webClient = new WebClient())
{
try
{
// parse request parameters and validate requested action
FilteringOptions options = new FilteringOptions(Request.QueryString);
if (options.CalendarUrl == null)
throw new ArgumentException("calendarUrl parameter was not provided by the user");
if (!((options.CalendarUrl.Scheme.ToLowerInvariant() == "https") || (options.CalendarUrl.Scheme.ToLowerInvariant() == "http")))
throw new HttpException(400, "Specified protocol was not recognized. Url should begin with 'http' or 'https'.");
// download the source iCalendar file content
webClient.Encoding = Encoding.UTF8;
string icalContent = webClient.DownloadString(options.CalendarUrl);
// parse iCalendar and filter according to user-defined options
EventManager eventManager = new EventManager(icalContent);
eventManager.Filter(options);
// return filtered calendar as a response in iCalendar format
string icalResponse = eventManager.GetIcal();
return Content(icalResponse);
}
catch (ArgumentException ae)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest, ae.Message);
}
catch (UriFormatException)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest, "Specified URL was not valid.");
}
catch (WebException)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest, "Specified resource could not have been accessed.");
}
catch (PDIParserException)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest, "Requested file is not a valid iCalendar file.");
}
catch (Exception)
{
return new HttpStatusCodeResult(HttpStatusCode.InternalServerError, "Application exception");
}
}
}
