ucla-dining/lib/dining.js

ucla dining hall activity scraper

const fs = require("fs");
const cheerio = require("cheerio");
const fetch = require("node-fetch");

module.exports.get_activity = function() {
    return new Promise(async (resolve, reject) => {
        try {
            const res  = await fetch("http://menu.dining.ucla.edu/Menus");
            const body = await res.text();
          //const body = fs.readFileSync("./example.html").toString();
            const $ = cheerio.load(body);
          
            let halls = {};
            $(".menu-block").map(function(i, el) {
                let name = $(el).find(".col-header").html();
                const activity = $(el).find(".activity-level-wrapper")
                                      .parent().text()
                                      .split("  ")[1];
          
                if (activity) {
                    name = name.replace(/ at Rieber/, "");
                    halls[name] = parseFloat("." + activity);
                }
            });
          
            if (Object.keys(halls).length == 0)
                throw(new Error("activity levels are not available right now"));

            resolve(halls);
        } catch (e) {
            console.log(e);
            resolve({error: true, message: e.message, code: e.code});
        }
    });
}