/** * Creates an event in the user's default calendar. * @see https://developers.google.com/calendar/api/v3/reference/events/insert */functioncreateEvent(){constcalendarId="primary";conststart=getRelativeDate(1,12);constend=getRelativeDate(1,13);// event details for creating event.letevent={summary:"Lunch Meeting",location:"The Deli",description:"To discuss our plans for the presentation next week.",start:{dateTime:start.toISOString(),},end:{dateTime:end.toISOString(),},attendees:[{email:"gduser1@workspacesample.dev"},{email:"gduser2@workspacesample.dev"},],// Red background. Use Calendar.Colors.get() for the full list.colorId:11,};try{// call method to insert/create new event in provided calandarevent=Calendar.Events.insert(event,calendarId);console.log(`Event ID:${event.id}`);}catch(err){console.log("Failed with error %s",err.message);}}/** * Helper function to get a new Date object relative to the current date. * @param {number} daysOffset The number of days in the future for the new date. * @param {number} hour The hour of the day for the new date, in the time zone *     of the script. * @return {Date} The new date. */functiongetRelativeDate(daysOffset,hour){constdate=newDate();date.setDate(date.getDate()+daysOffset);date.setHours(hour);date.setMinutes(0);date.setSeconds(0);date.setMilliseconds(0);returndate;}

/** * Lists the calendars shown in the user's calendar list. * @see https://developers.google.com/calendar/api/v3/reference/calendarList/list */functionlistCalendars(){letcalendars;letpageToken;do{calendars=Calendar.CalendarList.list({maxResults:100,pageToken:pageToken,});if(!calendars.items||calendars.items.length===0){console.log("No calendars found.");return;}// Print the calendar id and calendar summaryfor(constcalendarofcalendars.items){console.log("%s (ID: %s)",calendar.summary,calendar.id);}pageToken=calendars.nextPageToken;}while(pageToken);}

/** * Lists the next 10 upcoming events in the user's default calendar. * @see https://developers.google.com/calendar/api/v3/reference/events/list */functionlistNext10Events(){constcalendarId="primary";constnow=newDate();constevents=Calendar.Events.list(calendarId,{timeMin:now.toISOString(),singleEvents:true,orderBy:"startTime",maxResults:10,});if(!events.items||events.items.length===0){console.log("No events found.");return;}for(consteventofevents.items){if(event.start.date){// All-day event.conststart=newDate(event.start.date);console.log("%s (%s)",event.summary,start.toLocaleDateString());continue;}conststart=newDate(event.start.dateTime);console.log("%s (%s)",event.summary,start.toLocaleString());}}

/** * Creates an event in the user's default calendar, waits 30 seconds, then * attempts to update the event's location, on the condition that the event * has not been changed since it was created.  If the event is changed during * the 30-second wait, then the subsequent update will throw a 'Precondition * Failed' error. * * The conditional update is accomplished by setting the 'If-Match' header * to the etag of the new event when it was created. */functionconditionalUpdate(){constcalendarId="primary";conststart=getRelativeDate(1,12);constend=getRelativeDate(1,13);letevent={summary:"Lunch Meeting",location:"The Deli",description:"To discuss our plans for the presentation next week.",start:{dateTime:start.toISOString(),},end:{dateTime:end.toISOString(),},attendees:[{email:"gduser1@workspacesample.dev"},{email:"gduser2@workspacesample.dev"},],// Red background. Use Calendar.Colors.get() for the full list.colorId:11,};event=Calendar.Events.insert(event,calendarId);console.log(`Event ID:${event.getId()}`);// Wait 30 seconds to see if the event has been updated outside this script.Utilities.sleep(30*1000);// Try to update the event, on the condition that the event state has not// changed since the event was created.event.location="The Coffee Shop";try{event=Calendar.Events.update(event,calendarId,event.id,{},{"If-Match":event.etag},);console.log(`Successfully updated event:${event.id}`);}catch(e){console.log(`Fetch threw an exception:${e}`);}}

/** * Creates an event in the user's default calendar, then re-fetches the event * every second, on the condition that the event has changed since the last * fetch. * * The conditional fetch is accomplished by setting the 'If-None-Match' header * to the etag of the last known state of the event. */functionconditionalFetch(){constcalendarId="primary";conststart=getRelativeDate(1,12);constend=getRelativeDate(1,13);letevent={summary:"Lunch Meeting",location:"The Deli",description:"To discuss our plans for the presentation next week.",start:{dateTime:start.toISOString(),},end:{dateTime:end.toISOString(),},attendees:[{email:"gduser1@workspacesample.dev"},{email:"gduser2@workspacesample.dev"},],// Red background. Use Calendar.Colors.get() for the full list.colorId:11,};try{// insert eventevent=Calendar.Events.insert(event,calendarId);console.log(`Event ID:${event.getId()}`);// Re-fetch the event each second, but only get a result if it has changed.for(leti=0;i <30;i++){Utilities.sleep(1000);event=Calendar.Events.get(calendarId,event.id,{},{"If-None-Match":event.etag},);console.log(`New event description:${event.start.dateTime}`);}}catch(e){console.log(`Fetch threw an exception:${e}`);}}

/** * Retrieve and log events from the given calendar that have been modified * since the last sync. If the sync token is missing or invalid, log all * events from up to a month ago (a full sync). * * @param {string} calendarId The ID of the calender to retrieve events from. * @param {boolean} fullSync If true, throw out any existing sync token and *        perform a full sync; if false, use the existing sync token if possible. */functionlogSyncedEvents(calendarId,fullSync){constproperties=PropertiesService.getUserProperties();constoptions={maxResults:100,};constsyncToken=properties.getProperty("syncToken");if(syncToken &&!fullSync){options.syncToken=syncToken;}else{// Sync events up to thirty days in the past.options.timeMin=getRelativeDate(-30,0).toISOString();}// Retrieve events one page at a time.letevents;letpageToken;do{try{options.pageToken=pageToken;events=Calendar.Events.list(calendarId,options);}catch(e){// Check to see if the sync token was invalidated by the server;// if so, perform a full sync instead.if(e.message==="Sync token is no longer valid, a full sync is required."){properties.deleteProperty("syncToken");logSyncedEvents(calendarId,true);return;}thrownewError(e.message);}if(events.items &&events.items.length===0){console.log("No events found.");return;}for(consteventofevents.items){if(event.status==="cancelled"){console.log("Event id %s was cancelled.",event.id);return;}if(event.start.date){conststart=newDate(event.start.date);console.log("%s (%s)",event.summary,start.toLocaleDateString());return;}// Events that don't last all day; they have defined start times.conststart=newDate(event.start.dateTime);console.log("%s (%s)",event.summary,start.toLocaleString());}pageToken=events.nextPageToken;}while(pageToken);properties.setProperty("syncToken",events.nextSyncToken);}