NOTE TO TESTER: This feature really needs full QA testing, in the absence of detailed QA tests, please do exploitory testing on this feature. Particularly paying attention to editing, updating, deleting. Invalid files etc. Import form in calendar view The import subscription form should only appear for those users who already have the capability to add calendar events to that course calendar. Subscriptions list The import calendar form should show you a list of existing subscriptions, if any. This list allows you to Update the poll interval. This can be never, hourly, daily, weekly, monthly, or annually. Choose one from the list and click the Update button for that subscription. Remove the subscription. This will also remove any events added by the subscription from the calendar. Click the Remove button. Import Calendar form This form will let you add a subscription from a calendar URL, or import events from an uploaded calendar file. Calendar name: this should be mandatory and should not accept blank values. Import from: choose either a URL or a file Calendar URL: a URL to an external ics calendar file this field should be disabled if Import from is set to import from a file Calendar file: lets you choose or upload a calendar file using the standard Moodle file browser this field should be disabled if Import from is set to import from a URL Poll interval. This can be never, hourly, daily, weekly, monthly, or annually. this field has no effect when adding events from a calendar file. Type of event. This allows you to select which calendar the events should be added to - the same as when adding a single event normally. The list should display only those calendars you have permission to add events to - at either a user, group, course or site level. Group: this lets you select which group to add events to. this field should only be visible if you can add events to one or more groups. this field should only show groups that you have permission to add events to. Click Add to import the events from the calendar file, or add the calendar subscription. Poll interval The cron task should update calendar subscriptions as recorded in the mdl_event_subscriptions table, and as controlled by the poll interval. In the database, pollinterval is stored as a number of seconds, and calculated in cron using the current timestamp and the lastupdated field. In this way, monthly is actually anually divided by 12, rather than a strict calendar month.