const req = require('request'),
    { JSDOM } = require('jsdom'),
    https = require('https');

const SIGNS = JSON.parse(process.env.SIGNS),
    CHANNEL = "#jenkins-up";

(function() {
    function upperCaseFirstLetter(str) {
        return str.substr(0, 1).toUpperCase() +str.substr(1).toLowerCase();
    }

    function horoscopesToAttachments(horoscopes) {
        return horoscopes.map(i => {
            return {
                title: i.sign,
                title_link: i.source,
                text: i.text,
                thumb_url: i.image,
                fields: [{
                    title: "Personnes",
                    value: i.people.join(", "),
                    short: false
                }]
            };
        }).sort((a, b) => a.title.localeCompare(b.title));
    }

    function horoscopesToSingleAttachment(horoscopes) {
        const signsEmojis = {
            balance: ":libra:",
            belier: ":aries:",
            taureau: ":taurus:",
            gemeaux: ":gemini:",
            cancer: ":cancer:",
            lion: ":leo:",
            vierge: ":virgo:",
            scorpion: ":scorpius:",
            sagittaire: ":sagittarius:",
            capricorne: ":capricorn:",
            verseau: ":aquarius:",
            poisson: ":pisces:"
        };
        return [{
            text: horoscopes.sort((a, b) => a.sign.localeCompare(b.sign)).map(i => {
                    return signsEmojis[i.sign.toLowerCase()] +" *<" +i.source +"|" +i.sign +">*\n" +
                        i.text +'\n' +
                        "_" +i.people.join(", ") +"_";
                }).join("\n\n")
        }];
    }

    function sendMsg(horoscopes) {
        const req = https.request({
            hostname: 'team-009.slack.com',
            port: 443,
            path: '/services/hooks/jenkins-ci?token=' +process.env.JENKINS_TOKEN,
            method: 'POST',
        }, (res) => {
          console.log(`statusCode: ${res.statusCode}`);
          res.on('data', d => console.log(new String(d)));
        });
        var data = {
            channel: CHANNEL,
            text: "Bien le bonjour. Voici les horoscopes de la semaine.",
            attachments: horoscopesToSingleAttachment(horoscopes)
        };
        req.write(JSON.stringify(data));
        req.end();
    }

    function getHoroscope(sign, people) {
        return new Promise((res, rej) => {
            const url = "http://www.elle.fr/Astro/Horoscope/Hebdo/" +sign;
            req.get(url, (err, _, body) => {
                if (err) {
                    console.error("Cannot get horoscope for sign " +sign, err);
                    res({ sign: sign });
                    return;
                }
                var dom = new JSDOM(body);
                res({
                    sign: sign,
                    source: url,
                    people: people,
                    image: "http://knacki.info/zodiac/" +sign.toLowerCase() +".png",
                    text: dom.window.document.querySelector(".zone-resultat").textContent
                });
            });
        });
    }

    Promise.all(Object.keys(SIGNS).map(i => getHoroscope(upperCaseFirstLetter(i), SIGNS[i]))).then(results => sendMsg(results));
})();