Download all of the videos in a youtube channel as mp3

Youtube Download Full Channel

const API_KEY = "API_KEY_HERE"
const API_URL = "https://www.googleapis.com/youtube/v3/search"
const API_PATH = "/youtube/v3/search"
const https = require("https"); // I'm not sure why nodejs https API uses const but I'll trust them :)
const exec = require("child_process").exec;
var API_PARAMS =
{
	"key" : API_KEY,
	"channelId" : "CHANNEL ID",
	//"channelName" : "Just so you know :)",
	"part" : "id",
	"maxResults" : "50",
	"pageToken" : ""
},

options =
{
	"hostname" : "www.googleapis.com",
	"port" : 443,
	"path" : "/youtube/v3/search",
	"method" : "GET"
},
downloaderIndex = 0,
videoIDs = [],
apiResponse = "";

function generateGETString()
{
	return "?" + JSON.stringify(API_PARAMS)
				.replace(/{/g,"")
				.replace(/\,/g,"&")
				.replace(/:/g,"=")
				.replace(/\"/g,"")
				.replace(/}/,"");
}

function generateAudioOnlyCommand(videoID)
{
	return "youtube-dl --extract-audio --audio-quality 0 --audio-format mp3 https://youtube.com/watch?v=" + videoID;
}

function requestAPI()
{
	options.path = API_PATH + generateGETString();
	console.log(options.path);
	var req = https.request(options, (res) =>
	{
		//console.log('statusCode: ', res.statusCode);
		//console.log('headers: ', res.headers);

		res.on('data', (d) =>
		{
			apiResponse += d;
			//process.stdout.write(d);
		});
		res.on('end',() =>
		{
			apiResponse = JSON.parse(apiResponse);
			//console.log(apiResponse.pageInfo,apiResponse.items.length);
			for(var i = 0 ; i < apiResponse.items.length ; i ++)
			{
				if(apiResponse.items[i]["id"]["kind"] !== "youtube#video")
					console.log("skipping",apiResponse.items[i]);
				else videoIDs.push(apiResponse.items[i]["id"]["videoId"]);
				console.log(apiResponse.items[i]["id"]["kind"]);
			}
			if(!(typeof apiResponse["nextPageToken"] === "undefined"))
			{
				API_PARAMS.pageToken = apiResponse["nextPageToken"];
				apiResponse = "";
				requestAPI();
			}
			else
			{
				console.log("finished",videoIDs.length);
				syncDownload();
			}
		});
	});
	req.end();
	req.on('error', (e) => {console.error(e);});
}

function syncDownload()
{
	//console.log(videoIDs);
	//console.log(generateAudioOnlyCommand(videoIDs[downloaderIndex])); return;
	console.log("Running " + downloaderIndex);
	exec(generateAudioOnlyCommand(videoIDs[downloaderIndex]),{/*maxBuffer:10000000 //commenting out becuase I don't think I'll need it :P*/},function(e,stdout,stderr)
	{
		console.log("Downloaded " + videoIDs[downloaderIndex]);
		console.log(e);
		console.log(stderr);
		console.log(stdout);
		console.log();
		console.log();
		console.log();
		console.log();
		//console.log(videoIDs.length);
		//console.log(downloaderIndex);
		if(++downloaderIndex > videoIDs.length - 1)
			console.log("Downloader Index:" + downloaderIndex + " DONE!");
		else
			syncDownload();
	});
}

try
{
	process.chdir('DOWNLOAD_DIRECTORY');
	//console.log('New directory: ' + process.cwd());
}
catch(err)
{
	console.log('chdir: ' + err);
}
requestAPI();