Download sub etc

subscene.js

// @flow
var rp = require('request-promise');
var cheerio = require('cheerio');
var _ = require('lodash');
var fs = require('fs');
var Promise = require('bluebird');
var JSZip = require('JSZip');


var imdbID = 'tt1355644';
var language = 'Vietnamese';

downloadSub(imdbID, language).then(console.log.bind(console));

function load(uri) {
    var options = {
        uri: uri,
        transform: function(body) {
            return cheerio.load(body);
        }
    };

    return rp(options);
}

function download(imdbID, language) {
    return load(`http://www.imdb.com/title/${imdbID}`).then(function($) {
        var header = $('h1[itemprop=name]').text();
        var splited = header.match(/(.*?)\s+\(([0-9]+)\)/);
        var name = splited[1];
        var year = splited[2];

        return Promise.all([name, year, load(`https://subscene.com/subtitles/title?q=${name}&l=`)]);
    }).then(_.spread(function(name, year, $) {
        var titles = $('div.title a');
        var match = _.find(titles, function(el) {
            return $(el).text() == `${name} (${year})`;
        });
        var link = 'https://subscene.com' + $(match).attr('href');
        return Promise.all([name, year, load(link)]);
    })).then(_.spread(function(name, year, $) {
        var checked = $('a.imdb').attr('href') === `http://www.imdb.com/title/${imdbID}`

        console.log(`checked: ${checked}`);

        var subs = $('td.a1');
        var subsForLang = _.filter(subs, function(el) {
            return _.trim($(el).find('span.l.r').text()) === language;
        });

        var positiveSubs = _.filter(subsForLang, function(el) {
            return $(el).find('span.l.r.positive-icon').length > 0;
        });

        console.log(`positive?: ${positiveSubs.length > 0}`);

        var maybePositiveSub = positiveSubs.length > 0 ? positiveSubs : subsForLang;

        var urls = _.map(maybePositiveSub, function(el) {
            return 'https://subscene.com' + $(el).find('a').attr('href');
        });

        return load(_.first(urls));
    })).then(function($) {
        var link = 'https://subscene.com' + $('div.download a').attr('href');
        return rp({ uri: link, encoding: null });
    }).then(function(body) {
        var zip = new JSZip();
        return zip.loadAsync(body).then(function(contents) {
            var name = _.get(_(contents.files).map().first(), 'name');
            return zip.files[name].async('string');
        });
    });
}