Get a playlist content & duration

Soon, we'll be able to display data !

.gitignore

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+node_modules/

main.js

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+const fetch = require('node-fetch');
+
+const fs = require('fs');
+
+const PLAYLIST_ID = '';
+const API_KEY = '';
+
+async function getVideoData(videoId) {
+	const res = await fetch(
+		`https://www.googleapis.com/youtube/v3/videos?id=${videoId}&key=${API_KEY}`
+	);
+
+	return await res.json();
+}
+
+async function getVideosData(videosId) {
+	const res = await fetch(
+		`https://youtube.googleapis.com/youtube/v3/videos?part=snippet%2CcontentDetails%2Cstatistics&id=${videosId.join(',')}&key=${API_KEY}`
+	);
+
+	return await res.json();
+}
+
+const iso8601DurationRegex = /(-)?P(?:([.,\d]+)Y)?(?:([.,\d]+)M)?(?:([.,\d]+)W)?(?:([.,\d]+)D)?T(?:([.,\d]+)H)?(?:([.,\d]+)M)?(?:([.,\d]+)S)?/;
+function parseISO8601Duration(iso8601Duration) {
+	const matches = iso8601Duration.match(iso8601DurationRegex);
+
+	return {
+		sign: matches[1] === undefined ? '+' : '-',
+		years: matches[2] === undefined ? 0 : parseInt(matches[2]),
+		months: matches[3] === undefined ? 0 : parseInt(matches[3]),
+		weeks: matches[4] === undefined ? 0 : parseInt(matches[4]),
+		days: matches[5] === undefined ? 0 : parseInt(matches[5]),
+		hours: matches[6] === undefined ? 0 : parseInt(matches[6]),
+		minutes: matches[7] === undefined ? 0 : parseInt(matches[7]),
+		seconds: matches[8] === undefined ? 0 : parseInt(matches[8])
+	};
+}
+
+async function getPlayListData(playlistId) {
+	const finalResult = [];
+	let obj = {};
+	do {
+		let res;
+
+		if(obj.nextPageToken) {
+			res = await fetch(
+				`https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&maxResults=50&playlistId=${playlistId}&key=${API_KEY}&pageToken=${obj.nextPageToken}`
+			);
+		} else {
+			res = await fetch(
+				`https://www.googleapis.com/youtube/v3/playlistItems?part=snippet&maxResults=50&playlistId=${playlistId}&key=${API_KEY}`
+			);
+		}
+
+		obj = await res.json();
+		const videos = await getVideosData(obj.items.map((elt) => elt.snippet.resourceId.videoId));
+		finalResult.push(...obj.items.map((elt) => {
+			elt.videoData = videos.items.filter((video) =>
+				video.id === elt.snippet.resourceId.videoId
+			)[0];
+
+			return elt;
+		}));
+	} while(obj.nextPageToken);
+
+	return finalResult;
+}
+
+(async() => {
+	const playlistData = await getPlayListData(PLAYLIST_ID, 0);
+
+	console.log('Video count: ', playlistData.length);
+	const totalDuration = playlistData.reduce((acc, item) => {
+		const duration = parseISO8601Duration(item.videoData.contentDetails.duration);
+
+		acc.hours += duration.days * 24;
+		acc.hours += duration.hours;
+		acc.minutes += duration.minutes;
+		acc.seconds += duration.seconds;
+
+		while(acc.seconds > 60) {
+			acc.seconds -= 60;
+			acc.minutes++;
+		}
+
+		while(acc.minutes > 60) {
+			acc.minutes -= 60;
+			acc.hours++;
+		}
+
+		return acc;
+	}, { hours: 0, minutes: 0, seconds: 0 });
+	console.log('Total duration: ', totalDuration.hours.toString().padStart(2, '0') + ':' + totalDuration.minutes.toString().padStart(2, '0') + ':' + totalDuration.seconds.toString().padStart(2, '0'));
+})();

package.json

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+{
+  "name": "lumen-module-youtube",
+  "version": "1.0.0",
+  "description": "Youtube Module",
+  "main": "main.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "node-fetch": "^2.6.1"
+  }
+}