Plex livetv cli tuner

index.js

const PlexAPI = require("plex-api");
const spawn = require("child_process").spawn;
const http = require("http");

const identifier = "cli12345";
const session = "123456789";
const dvr = 7; // Find by querying '/livetv/dvrs' and looking for tv.plex.providers.epg.cloud:<number>
const channel = process.argv[2];

if (!channel) {
    console.log("Usage: node index.js <channel>");
    process.exit(0);
}

// You can create a separate config.js file, or simply overwrite the correct values below.
const config = require("./config.js");
const client = new PlexAPI({
    username: config.username,
    password: config.password,
    hostname: config.hostname,
    options: {identifier},
});

// Allow access to X-Plex-Token
let token;
client.authenticator.on("token", _token => (token = _token));

console.log("Tuning...");
client.postQuery(`/livetv/dvrs/${dvr}/channels/${channel}/tune`).then(
    async function (result) {
        const uuid = result?.MediaContainer?.MediaSubscription?.[0]?.MediaGrabOperation?.[0]?.Video?.Media?.[0]?.uuid;
        if (!uuid) {
            console.error(`Could not tune to channel ${channel}.  Are you sure this channel exists?`);
            process.exit(1);
        }
        const path = encodeURIComponent("/livetv/sessions/" + uuid);
        const url = `
        http://
        ${config.hostname}:32400
        /video/:/transcode/universal/start.mpd
        ?hasMDE=1
        &path=${path}
        &mediaIndex=0
        &partIndex=0
        &protocol=hls
        &location=wan
        &maxVideoBitrate=2000
        &mediaBufferSize=102400
        &session=${session}
        &X-Plex-Session-Identifier=${identifier}
        &X-Plex-Platform=Chrome
        &X-Plex-Token=${token}`;

        // Open mpv as a child process
        console.log("Opening MPV...");
        const mpv = spawn("mpv", [url.replace(/\s/g, "")], {stdio: "inherit", detached: true});
        mpv.on("exit", () => process.exit(0));
        mpv.unref();

        process.on("SIGINT", () => mpv.kill()); // Catch ctrl-c
        process.on("SIGTERM", () => mpv.kill()); // Catch kill

        // Begin keepalive pings
        setInterval(() => keepAlive(path), 60 * 1000);
    },
    err => console.error("Could not connect to server", err)
);

function keepAlive(path) {
    const url = `
    http://
    ${config.hostname}:32400
    /:/timeline
    &key=${path}
    &playbackTime=0
    &state=playing
    &X-Plex-Client-Identifier=${identifier}
    &X-Plex-Session-Identifier=${identifier}
    &X-Plex-Platform=Chrome
    &X-Plex-Token=${token}`;

    console.log("Sending keepalive");
    http.get(url.replace(/\s/g, "")).on("error", err => console.log("Keepalive error: " + err));
}