Load games list as JSON From Backloggery page

backloggery_load_games.js

let games = Array.from(document.getElementsByClassName('gamebox'));

function loadTitle(gamebox) {
    if (!gamebox) return null;
    return gamebox.querySelector('h2 b') ? gamebox.querySelector('h2 b').textContent.trim() : null;
 }

 function isNowPlaying(gamebox) {
     return gamebox.classList.contains('nowplaying');
 }

 function getPlatform(gamebox) {
     return gamebox.querySelector('.gamerow b') ? gamebox.querySelector('.gamerow b').textContent.trim() : null;
 }

 function getStatus(gamebox) {
    if (!gamebox.querySelectorAll('h2 a')) return null;
    if (!gamebox.querySelectorAll('h2 a')[1]) return null;
    if (!gamebox.querySelectorAll('h2 a')[1].querySelector('img')) return null;
    return gamebox.querySelectorAll('h2 a')[1].querySelector('img').getAttribute('alt');
 }

 function getInfo(gamebox) {
    if (!gamebox.querySelectorAll('.gamerow')) return null;
    if (!gamebox.querySelectorAll('.gamerow')[1]) return null;
    return gamebox.querySelectorAll('.gamerow')[1].textContent.trim();
 }

 function getAchievements(gamebox) {
    if (!gamebox.querySelector('.info span')) return null;
    if (!gamebox.querySelector('.info span').childNodes[1]) return null;
    return adaptAchievements(gamebox.querySelector('.info span').childNodes[1].textContent.trim());
 }

 function getRegion(gamebox) {
    if (!gamebox.querySelectorAll('h2 img.lift')) return null;
    if (!gamebox.querySelectorAll('h2 img.lift')[1]) return null;
    return gamebox.querySelectorAll('h2 img.lift')[1].getAttribute('alt');
 }

 function getRating(gamebox) {
    if (!gamebox.querySelectorAll('.gamerow img.lift')) return null;
    if (!gamebox.querySelectorAll('.gamerow img.lift')[0]) return null;
    return adaptRating(gamebox.querySelectorAll('.gamerow img.lift')[0].getAttribute('alt'));
}

function getDetails(gamebox) {
    if (!gamebox.querySelector('div[id]')) return;
    if (!gamebox.querySelector('div[id]')[1]) return;
    return gamebox.querySelectorAll('div[id]')[1].textContent.trim();
}

function adaptRating(rating) {
    if (!rating) return rating;
    return { as_str : rating,
        value : (rating.match(/★/g)||[]).length
    };

}

function adaptAchievements(achievementsStr) {
    if (!achievementsStr) return achievementsStr;
    let matches = achievementsStr.match(/(\d+)\s+\/\s+(\d+)\s+\((\d+)\%\)/);
    if (!matches) {
        return { as_str : achievementsStr }
    } else {
        return {
            got : parseInt(matches[1]),
            total : parseInt(matches[2]),
            percent: parseInt(matches[3]),
            as_str : achievementsStr
        }
    }
}

function loadGamesInfo(games) {
    return games
        .filter(function(gamebox) { return !gamebox.classList.contains('systemend'); })
        .map(function(gamebox) {
            return {
                title : loadTitle(gamebox),
                nowPlaying: isNowPlaying(gamebox),
                platform: getPlatform(gamebox),
                status: getStatus(gamebox),
                info: getInfo(gamebox),
                achievements: getAchievements(gamebox),
                rating: getRating(gamebox),
                region: getRegion(gamebox),
                details : getDetails(gamebox)
            }
        });
}

const gamesInfo = loadGamesInfo(games);

console.log(JSON.stringify(gamesInfo));
console.info(gamesInfo.length);