private void buildOutlookPattern(Event ev, AppointmentItem ai, out RecurrencePattern oPattern)
{
if (ev.Recurrence == null)
{
oPattern = null; return;
}
Dictionary <String, String> ruleBook = explodeRrule(ev.Recurrence);
if (ruleBook == null)
{
throw new ApplicationException("WARNING: The recurrence pattern is not compatible with Outlook. This event cannot be synced.");
}
log.Fine("Building Outlook recurrence pattern");
oPattern = ai.GetRecurrencePattern();
#region RECURRENCE PATTERN
//RRULE:FREQ=WEEKLY;UNTIL=20150906T000000Z;BYDAY=SA
switch (ruleBook["FREQ"])
{
case "DAILY": {
oPattern.RecurrenceType = OlRecurrenceType.olRecursDaily;
break;
}
case "WEEKLY": {
oPattern.RecurrenceType = OlRecurrenceType.olRecursWeekly;
// Need to work out dayMask from "BY" pattern
// Eg "BYDAY=MO,TU,WE,TH,FR"
OlDaysOfWeek dowMask = getDOWmask(ruleBook);
if (dowMask != 0)
{
oPattern.DayOfWeekMask = dowMask;
}
break;
}
case "MONTHLY": {
oPattern.RecurrenceType = OlRecurrenceType.olRecursMonthly;
if (ruleBook.ContainsKey("BYSETPOS"))
{
oPattern.RecurrenceType = OlRecurrenceType.olRecursMonthNth;
int gInstance = Convert.ToInt16(ruleBook["BYSETPOS"]);
oPattern.Instance = (gInstance == -1) ? 5 : gInstance;
oPattern.DayOfWeekMask = getDOWmask(ruleBook);
if (oPattern.DayOfWeekMask == (OlDaysOfWeek)127 && gInstance == -1 &&
(ev.Start.DateTime ?? DateTime.Parse(ev.Start.Date)).Day > 28)
{
//In Outlook this is simply a monthly recurring
oPattern.RecurrenceType = OlRecurrenceType.olRecursMonthly;
}
}
if (ruleBook.ContainsKey("BYDAY"))
{
if (ruleBook["BYDAY"].StartsWith("-1"))
{
oPattern.RecurrenceType = OlRecurrenceType.olRecursMonthNth;
oPattern.Instance = 5;
oPattern.DayOfWeekMask = getDOWmask(ruleBook["BYDAY"].TrimStart("-1".ToCharArray()));
}
else if ("1,2,3,4".Contains(ruleBook["BYDAY"].Substring(0, 1)))
{
oPattern.RecurrenceType = OlRecurrenceType.olRecursMonthNth;
oPattern.Instance = Convert.ToInt16(ruleBook["BYDAY"].Substring(0, 1));
oPattern.DayOfWeekMask = getDOWmask(ruleBook["BYDAY"].TrimStart(oPattern.Instance.ToString().ToCharArray()));
}
}
break;
}
case "YEARLY": {
oPattern.RecurrenceType = OlRecurrenceType.olRecursYearly;
//Google interval is years, Outlook is months
if (ruleBook.ContainsKey("INTERVAL") && Convert.ToInt16(ruleBook["INTERVAL"]) > 1)
{
oPattern.Interval = Convert.ToInt16(ruleBook["INTERVAL"]) * 12;
}
if (ruleBook.ContainsKey("BYSETPOS"))
{
oPattern.RecurrenceType = OlRecurrenceType.olRecursYearNth;
int gInstance = Convert.ToInt16(ruleBook["BYSETPOS"]);
oPattern.Instance = (gInstance == -1) ? 5 : gInstance;
oPattern.DayOfWeekMask = getDOWmask(ruleBook);
if (ruleBook.ContainsKey("BYMONTH"))
{
oPattern.MonthOfYear = Convert.ToInt16(ruleBook["BYMONTH"]);
}
}
break;
}
}
#endregion
#region RANGE
ai = OutlookOgcs.Calendar.Instance.IOutlook.WindowsTimeZone_set(ai, ev);
oPattern.PatternStartDate = ev.Start.DateTime ?? DateTime.Parse(ev.Start.Date);
if (ruleBook.ContainsKey("INTERVAL") && Convert.ToInt16(ruleBook["INTERVAL"]) > 1 && ruleBook["FREQ"] != "YEARLY")
{
oPattern.Interval = Convert.ToInt16(ruleBook["INTERVAL"]);
}
if (ruleBook.ContainsKey("COUNT"))
{
oPattern.Occurrences = Convert.ToInt16(ruleBook["COUNT"]);
}
if (ruleBook.ContainsKey("UNTIL"))
{
if (ruleBook["UNTIL"].StartsWith("4500"))
{
log.Warn("Outlook can't handle end dates this far in the future. Converting to no end date.");
oPattern.NoEndDate = true;
}
else
{
DateTime endDate;
if (ruleBook["UNTIL"].Length == 8 && !ruleBook["UNTIL"].EndsWith("Z"))
{
endDate = DateTime.ParseExact(ruleBook["UNTIL"], "yyyyMMdd", System.Globalization.CultureInfo.InvariantCulture).Date;
}
else
{
endDate = DateTime.ParseExact(ruleBook["UNTIL"], "yyyyMMddTHHmmssZ", System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.AdjustToUniversal);
endDate = endDate.AddHours(TimezoneDB.GetUtcOffset(ev.End.TimeZone)).Date;
}
if (endDate < oPattern.PatternStartDate)
{
log.Debug("PatternStartDate: " + oPattern.PatternStartDate.ToString("yyyyMMddHHmmss"));
log.Debug("PatternEndDate: " + ruleBook["UNTIL"].ToString());
String summary = GoogleOgcs.Calendar.GetEventSummary(ev, onlyIfNotVerbose: true);
Forms.Main.Instance.Console.Update(summary + "The recurring Google event has an end date <i>before</i> the start date, which Outlook doesn't allow.<br/>" +
"The synced Outlook recurrence has been changed to a single occurrence.", Console.Markup.warning);
oPattern.Occurrences = 1;
}
else
{
oPattern.PatternEndDate = endDate;
}
}
}
if (!ruleBook.ContainsKey("COUNT") && !ruleBook.ContainsKey("UNTIL"))
{
oPattern.NoEndDate = true;
}
#endregion
}
