Metacritic calculator

// Usage: Go to https://www.metacritic.com/feature/best-videogames-released-in-2018 and open the console
// Type in "var temp1 = <<paste Data here>>" and hit enter
// Copy and paste this entire file into the console and run it to see the updated chart


(function () {


    const TARGET_YEAR = 2019;
    const PLATFORMS = temp1
    const SCORE_BREAKDOWN_ELEMENT = $('.listtable:first-of-type');

    function calculateTotals() {

        console.log("Updating Table");

        // Create exclusives list
        const systemCountForGames = {}
        for (let platform of PLATFORMS) {
            for (let game of platform.data) {
                    if (typeof systemCountForGames[game.title] === "undefined")
                        systemCountForGames[game.title] = new Set([platform.key])
                    else
                        systemCountForGames[game.title].add(platform.key)
            }
        }

        // Update title
        let newTitle = $('caption', SCORE_BREAKDOWN_ELEMENT).text().replace(/20[0-2]\d/, TARGET_YEAR);
        $('caption', SCORE_BREAKDOWN_ELEMENT).text(newTitle)

        var v_post_string = "";
        // Update table
        for (let platform of PLATFORMS) {
            // Update table
            let tableRow = $(`tr:contains("${platform.title}")`, SCORE_BREAKDOWN_ELEMENT);
            let columns = $('td', tableRow);

            let thisYearsGames = platform.data.filter(x=>x.year === TARGET_YEAR && x.score !== null);

            // Total
            $(columns[2]).text(thisYearsGames.length)

            // Pie
            let red = thisYearsGames.filter(x=> x.score <= 49).length;
            let yellow = thisYearsGames.filter(x => 50 <= x.score && x.score <= 74).length;
            let games75Higher = thisYearsGames.filter(x => 75 <= x.score);
            let green = games75Higher.length;
            $(columns[3]).html(`<span class="sparkpie">${green},${yellow},${red}</span>`);
            $('.sparkpie', columns[3]).sparkline('html', { type: 'pie', height: '30px', offset: -90, sliceColors: ['#66cc33', '#ffcc33', '#ff0000'] });

            // Average Metascore
            let average = thisYearsGames.map(x => x.score).reduce((x, y) => x + y) / thisYearsGames.length;
            let rounded = Math.round((average + Number.EPSILON) * 100) / 100
            $(columns[4]).text(rounded.toFixed(1))

            // Great Games** (90 or higher)
            $(columns[5]).text(thisYearsGames.filter(x => x.score >= 90).length)

            //Good Exclusives** (75 or higher)
            let goodExclusives = games75Higher.map(game =>{return {game:game , systems:systemCountForGames[game.title]}})
            .filter(x => x.systems.size === 1 && x.systems.has(platform.key));
            $(columns[6]).text(goodExclusives.length);
            var exclusivesString = `\n\n ${platform.title} Good Exclusives:` + "\n> "+goodExclusives.map(x=>x.game.title).join("\n> ");
            v_post_string+= exclusivesString
        }
        console.log("Platform data:", PLATFORMS);
        console.log(v_post_string);
    }

    calculateTotals()

})()