Enhanced Online Event Boolean for TechNW Calendar

[Sean12697]

An Enhancement of #105, for the TechNW Google Calendar, we can take a recurring event (based on the name being the same) and sample three instances of the event, one prior to COVID-19, one during peak lock-down (where in-person events could not legally happen) and one after, with those three events if the location remains the same, we can set the event to false for both is_online_event and is_offline_event (deriving unspecified).

[Sean12697]

We can only really infer that an event is not in-person (is_offline_event) based on the above, a previous discussion has been had about adding a feature to contact the event organiser, which is possible through the Google Calendar API and a creator property (with an email and displayName property) can be seen, although this would actively involve the "processing" of individual's data, which is a separate conversation / issue.

[Sean12697]

Breaking down the logic even further, for a given recurring event (of the same name), we can get historic entries from the Google Calendar by modifying the timeMin parameter of the API Call below.

compiled-mcr-events/_data/sources/googleCalendar.js

Line 7 in 952e692

this.url = `https://www.googleapis.com/calendar/v3/calendars/${ calendarId }/events?key=${ calendarKey }&maxResults=9999&singleEvents=true&orderBy=starttime&timeMin=${ this.ISODateString(new Date()) }&timeMax=${ this.ISODateString(new Date((new Date().valueOf()) + 31540000000)) }`;

With those historic events we will get two instance, one each for the following months below:

• January 2020 (one prior to COVID-19)
• January 2021 (one during peak lock-down (where in-person events could not legally happen))

If the location for these two events is the same as the current / up-coming events location, then for the up-coming event we will set both is_online_event and is_offline_event to false.

For this issue, we can either make two Google Calendar API calls, one for historic events and one for up-coming, or make one API with the timeMin parameter set to 1st January 2020 then filter historic events from being returned.