cyp/index.js

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const static = require("node-static");
const app = new static.Server("./app");
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const port = Number(process.argv[2]) || process.env.PORT || 8080;
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let tickets = [];
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const cmd = "youtube-dl";
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function downloadYoutube(q, response) {
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response.setHeader("Content-Type", "text/plain"); // necessary for firefox to read by chunks
// response.setHeader("Content-Type", "text/plain; charset=utf-8");
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console.log("YouTube downloading", q);
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let args = [
"-f", "bestaudio",
"-o", `${__dirname}/_youtube/%(title)s-%(id)s.%(ext)s`,
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q
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]
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let child = require("child_process").spawn(cmd, args);
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child.stdout.setEncoding("utf8").on("data", chunk => response.write(chunk));
child.stderr.setEncoding("utf8").on("data", chunk => response.write(chunk));
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child.on("error", error => {
console.log(error);
response.writeHead(500);
response.end(error.message);
});
child.on("close", code => {
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if (code != 0) { // fixme
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}
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response.end();
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});
}
function handleYoutube(request, response) {
let str = "";
request.setEncoding("utf8");
request.on("data", chunk => str += chunk);
request.on("end", () => {
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let q = require("querystring").parse(str)["q"];
if (q) {
downloadYoutube(q, response);
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} else {
response.writeHead(404);
response.end();
}
});
}
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function handleTicket(request, response) {
request.resume().on("end", () => {
let ticket = require("crypto").randomBytes(16).toString("hex");
tickets.push(ticket);
if (tickets.length > 10) { tickets.shift(); }
let data = {ticket};
response.setHeader("Content-Type", "application/json");
response.end(JSON.stringify(data));
});
}
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function onRequest(request, response) {
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switch (true) {
case request.method == "POST" && request.url == "/youtube":
return handleYoutube(request, response);
case request.method == "POST" && request.url == "/ticket":
return handleTicket(request, response);
default:
return request.on("end", () => app.serve(request, response)).resume();
}
}
function requestValidator(request) {
let ticket = request.resourceURL.query["ticket"];
let index = tickets.indexOf(ticket);
if (index > -1) {
tickets.splice(index, 1);
return true;
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} else {
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return false;
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}
}
let httpServer = require("http").createServer(onRequest).listen(port);
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require("ws2mpd").ws2mpd(httpServer, requestValidator);
require("ws2mpd").logging(false);