75 lines
2.2 KiB
JavaScript
75 lines
2.2 KiB
JavaScript
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const plex = require("./plex");
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const logger = require("./logging")
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const config = require("../config/configuration");
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const lastPlaying = {};
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const lastScrobbleTimes = {};
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async function poll() {
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const now = Date.now();
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const playing = [];
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try {
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const data = await plex.getCurrentlyPlaying();
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playing.push.apply(playing, data);
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} catch (ex) {
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logger.error(ex, "Could not fetch currently playing data from Plex.");
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return;
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}
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for (let media of playing) {
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if (!lastScrobbleTimes[media.mediaKey]) {
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lastScrobbleTimes[media.mediaKey] = 1;
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}
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const lastTrack = lastPlaying[media.sessionKey];
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if (!lastTrack) {
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logger.info(media, "A new session has started.");
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} else {
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if (checkIfCanScrobble(media, lastTrack, now)) {
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logger.info(lastTrack, "Scrobble");
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lastScrobbleTimes[lastTrack.mediaKey] = now;
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}
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}
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lastPlaying[media.sessionKey] = media;
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}
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// Scrobble then remove lingering sessions
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for (let key in lastPlaying) {
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if (!playing.some(p => p.sessionKey == key)) {
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const track = lastPlaying[key];
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if (checkIfCanScrobble(null, track, now)) {
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logger.info(track, "Scrobble");
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lastScrobbleTimes[track.mediaKey] = now;
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}
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delete lastPlaying[key];
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logger.debug("Deleted old session.", key);
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}
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}
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}
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function checkIfCanScrobble(current, last, now) {
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const scrobbleDuration = isInt(config.scrobble.duration) ? Number(config.scrobble.duration) : 30;
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const scrobblePercent = isInt(config.scrobble.percent) ? Number(config.scrobble.percent) : 30;
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if (last) {
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const newPlayback = current == null || current.playtime < last.playtime;
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const canBeScrobbled = last.playtime > scrobbleDuration * 1000 || last.playtime / last.duration > scrobblePercent;
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if (newPlayback && canBeScrobbled) {
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const sameSong = current != null && current.mediaKey == last.mediaKey;
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const lastTime = lastScrobbleTimes[last.mediaKey];
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return !sameSong || !lastTime || now - lastTime > scrobbleDuration;
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}
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}
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return false;
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}
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function isInt(value) {
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return !isNaN(value) &&
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parseInt(Number(value)) == value &&
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!isNaN(parseInt(value, 10));
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}
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module.exports = poll;
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