ChinachuとMirakurunが何も使われていないかどうかを返す

config.json

{
    "chinachu": {
        "base_url": "http://<chinachu-address:port>/"
    },
    "mirakurun": {
        "base_url": "http://<mirakurun-address:port>/"
    }
}

hibernate-judge.js

const http = require("http");
const https = require("https");
const url = require("url");

const config = require("./config.json");


function isMirakurunTunerUsed() {
    return new Promise(function (resolve, reject) {
        const api_url = url.parse(url.resolve(config.mirakurun.base_url, "api/Status"));
        const http_or_https = api_url.protocol === "https:" ? https : http;
        http_or_https.get(
            api_url,
            function (res) {
                if (res.statusCode !== 200) {
                    console.error("Mirakurun API (Status) HTTPError: " + res.status);
                    reject();
                }
                res.setEncoding("utf8");
                let body = "";
                res.on("data", function (chunk) {
                    body += chunk;
                });
                res.on("end", function () {
                    const json = JSON.parse(body);
                    const result = json.streamCount.tunerDevice > 0; // Mirakurunのチューナーを使用しているストリームがあるかどうか
                    return resolve(result);
                });
            }
        ).on("error", function (e) {
            console.error("Mirakurun API (Status) AccessError: " + e.message);
            reject();
        });
    });
}


function isThereUserConnectedToChinachuWUI() {
    return new Promise(function (resolve, reject) {
        const api_url = url.parse(url.resolve(config.chinachu.base_url, "api/status.json"));
        const http_or_https = api_url.protocol === "https:" ? https : http;
        http_or_https.get(
            api_url,
            function (res) {
                if (res.statusCode !== 200) {
                    console.error("Chinachu API (status.json) HTTPError: " + res.status);
                    reject();
                }
                res.setEncoding("utf8");
                let body = "";
                res.on("data", function (chunk) {
                    body += chunk;
                });
                res.on("end", function () {
                    const json = JSON.parse(body);
                    const result = json.connectedCount > 0; // Chinachu WUIにアクセス中のユーザーがいるかどうか
                    return resolve(result);
                });
            }
        ).on("error", function (e) {
            console.error("Chinachu API (status.json) AccessError: " + e.message);
            reject();
        });
    });
}


function hasScheduledRecordingSoon() {
    return new Promise(function (resolve, reject) {
        const api_url = url.parse(url.resolve(config.chinachu.base_url, "api/reserves.json"));
        const http_or_https = api_url.protocol === "https:" ? https : http;
        http_or_https.get(
            api_url,
            function (res) {
                if (res.statusCode !== 200) {
                    console.error("Chinachu API (reserves.json) HTTPError: " + res.status);
                    reject();
                }
                res.setEncoding("utf8");
                let body = "";
                res.on("data", function (chunk) {
                    body += chunk;
                });
                res.on("end", function () {
                    const json = JSON.parse(body);
                    const current_time = new Date().getTime();
                    const result = json.length > 0 && json[0].start - 1800000 <= current_time; // 録画予約があり、直近の録画予約開始時刻が30分以内かどうか
                    return resolve(result);
                });
            }
        ).on("error", function (e) {
            console.error("Chinachu API (reserves.json) AccessError: " + e.message);
            reject();
        });
    });
}

// main
const tasks = [isMirakurunTunerUsed(), isThereUserConnectedToChinachuWUI(), hasScheduledRecordingSoon()];
Promise.all(tasks).then(function (results) {
    let exit_code = 0;
    for (let i = 0; i < tasks.length; i++) {
        if (results[i]) {
            // チェック対象の3関数のうち1つでもTrueが返ってきたときは
            // ハイバネートできないので、exit_codeに加算
            exit_code += 1 << i;
        }
    }
    process.exit(exit_code);
}).catch(function () {
    // 何らかのエラーが起きてるよ
    process.exit(255);
});