127 lines
3.2 KiB
JavaScript
127 lines
3.2 KiB
JavaScript
const static = require("node-static");
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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 escape(arg) {
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return `'${arg.replace(/'/g, `'\\''`)}'`;
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}
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function searchYoutube(q, response) {
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response.setHeader("Content-Type", "text/plain"); // necessary for firefox to read by chunks
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console.log("YouTube searching", q);
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q = escape(`ytsearch3:${q}`);
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const command = `${cmd} -j ${q} | jq "{id,title}" | jq -s .`;
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require("child_process").exec(command, {}, (error, stdout, stderr) => {
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if (error) {
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console.log("error", error);
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response.writeHead(500);
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response.end(error.message);
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} else {
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response.end(stdout);
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}
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});
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}
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function downloadYoutube(id, response) {
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response.setHeader("Content-Type", "text/plain"); // necessary for firefox to read by chunks
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console.log("YouTube downloading", id);
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let args = [
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"-f", "bestaudio",
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"-o", `${__dirname}/_youtube/%(title)s-%(id)s.%(ext)s`,
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id
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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));
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child.stderr.setEncoding("utf8").on("data", chunk => response.write(chunk));
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child.on("error", error => {
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console.log(error);
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response.writeHead(500);
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response.end(error.message);
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});
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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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});
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}
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function handleYoutubeSearch(url, response) {
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let q = url.searchParams.get("q");
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if (q) {
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searchYoutube(q, response);
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} else {
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response.writeHead(404);
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response.end();
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}
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}
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function handleYoutubeDownload(request, response) {
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let str = "";
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request.setEncoding("utf8");
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request.on("data", chunk => str += chunk);
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request.on("end", () => {
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let id = require("querystring").parse(str)["id"];
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if (id) {
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downloadYoutube(id, response);
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} else {
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response.writeHead(404);
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response.end();
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}
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});
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}
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function handleTicket(request, response) {
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request.resume().on("end", () => {
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let ticket = require("crypto").randomBytes(16).toString("hex");
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tickets.push(ticket);
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if (tickets.length > 10) { tickets.shift(); }
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let data = {ticket};
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response.setHeader("Content-Type", "application/json");
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response.end(JSON.stringify(data));
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});
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}
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function onRequest(request, response) {
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const url = new URL(request.url, "http://localhost");
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switch (true) {
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case request.method == "GET" && url.pathname == "/youtube":
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return handleYoutubeSearch(url, response);
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case request.method == "POST" && url.pathname == "/youtube":
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return handleYoutubeDownload(request, response);
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case request.method == "POST" && url.pathname == "/ticket":
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return handleTicket(request, response);
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default:
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return request.on("end", () => app.serve(request, response)).resume();
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}
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}
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function requestValidator(request) {
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let ticket = request.resourceURL.query["ticket"];
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let index = tickets.indexOf(ticket);
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if (index > -1) {
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tickets.splice(index, 1);
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return true;
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} else {
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return false;
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}
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}
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let httpServer = require("http").createServer(onRequest).listen(port);
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require("ws2mpd").ws2mpd(httpServer, requestValidator);
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require("ws2mpd").logging(false);
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