saveFetch.api

<?
const fs=require("fs");
const fsp=require("fs/promises");
const fetch=require("node-fetch");

if(input.token!=="z83na2k") throw 403;
if(input.action==="audioSave"){
	//EXAMPLE: fetch("https://lff.one/z/saveFetch.api?action=audioSave&token=z83na2k&title="+escape(title)+"&artist="+escape(artist)+"&num="+playlistNum+"&src="+escape(src))
	// INLINE JS: {b=document.getElementsByClassName("btn btn-new")[1];src=b.childNodes[0].dataset.url;playlistNum=b.parentElement.parentElement.children[0].children[0].children[0].innerText;title=b.parentElement.parentElement.children[0].children[0].children[1].children[0].innerText;artist=b.parentElement.parentElement.children[0].children[0].children[1].children[1].innerText;}
	const downloadPath="/tmp/fetched-audio/";
	const data={
		url: unescape(input.src),
		title: unescape(input.title),
		artist: unescape(input.artist),
		num: Number(input.num),
		folder: input.folder?unescape(input.folder):"default",
	};
	//await fsp.mkdir(downloadPath);
	const folder=downloadPath+data.folder+"/";
	await fsp.mkdir(folder,{recursive:true});

	const file=folder+String(data.num).padStart(3,"0")+" "+data.title+".mp3";

	const res=await fetch(data.url);
	if(!res.ok) throw 400;
	const stream=fs.createWriteStream(file);
	res.body.pipe(stream);

	const error=await new Promise(resolve=>{
		stream.on("finish",resolve);
		stream.on("error",resolve);
	});

	if(error){
		console.log("error: "+data.num+" "+data.title+",",error);
		throw 400;
	}
	else res.write("OK");
	await fsp.appendFile(folder+"files.csv",data.num+"; "+data.title+"; "+data.artist+"\n");
	log("Saved: "+data.num+" "+data.title);
}
else throw 400;
?>