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116 lines
3.5 KiB
116 lines
3.5 KiB
/* eslint-disable no-underscore-dangle */
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import cache from "memory-cache";
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import { xml2json } from "xml-js";
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import { formatApiCall } from "utils/proxy/api-helpers";
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import { httpProxy } from "utils/proxy/http";
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import getServiceWidget from "utils/config/service-helpers";
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import createLogger from "utils/logger";
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import widgets from "widgets/widgets";
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const proxyName = "plexProxyHandler";
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const librariesCacheKey = `${proxyName}__libraries`;
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const moviesCacheKey = `${proxyName}__movies`;
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const tvCacheKey = `${proxyName}__tv`;
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const logger = createLogger(proxyName);
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async function getWidget(req) {
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const { group, service } = req.query;
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if (!group || !service) {
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logger.debug("Invalid or missing service '%s' or group '%s'", service, group);
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return null;
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}
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const widget = await getServiceWidget(group, service);
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if (!widget) {
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logger.debug("Invalid or missing widget for service '%s' in group '%s'", service, group);
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return null;
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}
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return widget;
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}
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async function fetchFromPlexAPI(endpoint, widget) {
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const api = widgets?.[widget.type]?.api;
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if (!api) {
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return [403, null];
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}
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const url = new URL(formatApiCall(api, { endpoint, ...widget }));
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const [status, contentType, data] = await httpProxy(url);
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if (status !== 200) {
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logger.error("HTTP %d communicating with Plex. Data: %s", status, data.toString());
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return [status, data];
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}
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try {
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const dataDecoded = xml2json(data.toString(), { compact: true });
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return [status, JSON.parse(dataDecoded), contentType];
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} catch (e) {
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logger.error("Error decoding Plex API data. Data: %s", data.toString());
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return [status, null];
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}
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}
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export default async function plexProxyHandler(req, res) {
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const widget = await getWidget(req);
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if (!widget) {
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return res.status(400).json({ error: "Invalid proxy service type" });
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}
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logger.debug("Getting streams from Plex API");
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let streams;
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let [status, apiData] = await fetchFromPlexAPI("/status/sessions", widget);
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if (status !== 200) {
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return res.status(status).json({error: {message: "HTTP error communicating with Plex API", data: Buffer.from(apiData).toString()}});
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}
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if (apiData && apiData.MediaContainer) {
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streams = apiData.MediaContainer._attributes.size;
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}
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let libraries = cache.get(librariesCacheKey);
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if (libraries === null) {
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logger.debug("Getting libraries from Plex API");
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[status, apiData] = await fetchFromPlexAPI("/library/sections", widget);
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if (apiData && apiData.MediaContainer) {
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libraries = apiData.MediaContainer.Directory;
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cache.put(librariesCacheKey, libraries, 1000 * 60 * 60 * 6);
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}
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}
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let movies = cache.get(moviesCacheKey);
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let tv = cache.get(tvCacheKey);
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if (movies === null || tv === null) {
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movies = 0;
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tv = 0;
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logger.debug("Getting movie + tv counts from Plex API");
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libraries.filter(l => ["movie", "show"].includes(l._attributes.type)).forEach(async (library) => {
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[status, apiData] = await fetchFromPlexAPI(`/library/sections/${library._attributes.key}/all`, widget);
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if (apiData && apiData.MediaContainer) {
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const size = parseInt(apiData.MediaContainer._attributes.size, 10);
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if (library._attributes.type === "movie") {
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movies += size;
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} else if (library._attributes.type === "show") {
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tv += size;
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}
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}
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cache.put(tvCacheKey, tv, 1000 * 60 * 10);
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cache.put(moviesCacheKey, movies, 1000 * 60 * 10);
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});
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}
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const data = {
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streams,
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tv,
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movies
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};
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return res.status(status).send(data);
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}
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