First pass at calendar ics file generation using existing urls

next.config.js

@@ -1,6 +1,7 @@
 const withFonts = require('next-fonts');
 module.exports = withFonts({
   webpack(config, options) {
+	config.node = { net: 'empty' }
     return config;
   }
 });

pages/download/[calendar].js

@@ -0,0 +1,129 @@
+import React from 'react';
+import * as ics from 'ics';
+import moment from 'moment'
+
+export default class Calendar extends React.Component {
+	static async getInitialProps({ res, query }) {
+		if (!res) {
+			return;
+		}
+
+		let request = query.calendar.replace(".ics", "");
+
+		var includeFP1, includeFP2, includeFP3, includeQuali, includeRace = false
+		var alarmEnabled = false
+
+		if(request.includes("p1")){
+			includeFP1 = true
+		}
+		if(request.includes("p2")){
+			includeFP2 = true
+		}
+		if(request.includes("p3")){
+			includeFP3 = true
+		}
+		if(request.includes("q")){
+			includeQuali = true
+		}
+		if(request.includes("gp")){
+			includeRace = true
+		}
+
+		if(request.includes("alarm")){
+			alarmEnabled = true
+		}
+
+		let alarmOffset = 20;
+		if(alarmEnabled){
+			let requestArray = request.split("-");
+			alarmOffset = requestArray.slice(-1)[0];
+		}
+
+		const data = await import(`../../db/2020.json`)
+
+		let events = []
+
+		const races = data.races;
+
+		var i = 0;
+		// Races
+		for (i = 0; i < races.length; i++) { 
+			let race = races[i]
+
+			// Sessions
+			var s = 0;
+			for (s = 0; s < Object.keys(race.sessions).length; s++) {
+				let sessionKey = Object.keys(race.sessions)[s];
+				let session = race.sessions[sessionKey]
+
+				// Skip
+				if(sessionKey == "fp1" && !includeFP1) continue;
+				if(sessionKey == "fp2" && !includeFP2) continue;
+				if(sessionKey == "fp3" && !includeFP3) continue;
+				if(sessionKey == "qualifying" && !includeQuali) continue;
+				if(sessionKey == "race" && !includeRace) continue;
+
+				var title = race.name + " Grand Prix";
+				var category = "Grand Prix";
+				var sessionLength = 120;
+				if(sessionKey == "fp1"){
+					title = "First Practice Session ("+title+")";
+					category = "First Practice Session";
+					sessionLength = 90;
+				} else if(sessionKey == "fp2"){
+					title = "Second Practice Session ("+title+")";
+					category = "Second Practice Session";
+					sessionLength = 90;
+				} else if(sessionKey == "fp3"){
+					title = "Third Practice Session ("+title+")";
+					category = "Third Practice Session";
+					sessionLength = 60;
+				} else if(sessionKey == "qualifying"){
+					title = "Qualifying Session ("+title+")";
+					category = "Qualifying Session";
+					sessionLength = 60;
+				}
+
+				let alarms = []
+
+				if(alarmEnabled){
+					var alarmDescription = title + " starts in "+alarmOffset+" minutes"
+					alarms.push({
+						action: 'display',
+						description: alarmDescription,
+						trigger: {minutes:alarmOffset, before:true},
+						repeat: 0,
+					})
+				}
+
+				let start = moment(session).format('YYYY-M-D-H-m').split("-")
+				let end = moment(session).add(sessionLength, 'minutes').format('YYYY-M-D-H-m').split("-")
+
+				let event = {
+					title: title,
+					location: race.location,
+					productId:"f1calendar.com",
+					uid: "http://2020.f1calendar.com/#GP"+i+"_2020_"+sessionKey,
+					categories: [category],
+					start: start,
+					end: end,
+					geo: { lat: race.latitude, lon: race.longitude },
+					sequence: "2020",
+					alarms: alarms
+				}
+				events.push(event)
+			}
+		}
+
+		ics.createEvents(events, (error, value) => {
+			if (error) {
+				console.log(error);
+				return
+			}
+
+			res.setHeader("Content-Type", "text/calendar");
+			res.write(value);
+			res.end();
+		});
+	}
+}