Racing Skill Display

Shows the racing skill of drivers in your race as long as they have this script installed as well
Stel een vraag, plaats een beoordeling of rapporteer dit script.
Regels afbreken
// ==UserScript==
// @name         Racing Skill Display
// @namespace    https://github.com/zim312/raceskill
// @version      0.0.1
// @description  Shows the racing skill of drivers in your race as long as they have this script installed as well
// @originalauthor       Sulsay [2173590]
// @author	 Zim312 [1984387]
// @match        https://www.torn.com/loader.php?sid=racing*
// @grant        GM_xmlhttpRequest
// ==/UserScript==

const arsonBaseApiUrl = 'https://cs.etmc.org/torn/api/v1';
const racingSkillCacheByDriverId = new Map();

(async function () {
    const racingSkillElm = document.querySelector('.skill');
    await saveRacingSkill(getUserIdFromCookie(), racingSkillElm.innerText);

    insertRacingSkillsIntoCurrentDriversList();

    // On change race tab, (re-)insert the racing skills if applicable:
    new MutationObserver(insertRacingSkillsIntoCurrentDriversList).observe(document.getElementById('racingAdditionalContainer'), {childList: true});
})();

async function insertRacingSkillsIntoCurrentDriversList() {
    const driversList = document.getElementById('leaderBoard');
    if (driversList === null) {
        return;
    }

    watchForDriversListContentChanges(driversList);

    const racingSkills = await getRacingSkillForDrivers(getDriverIds(driversList));
    for (let driver of driversList.querySelectorAll('.driver-item')) {
        const driverId = getDriverId(driver);
        if (! racingSkills[driverId]) {
            continue;
        }
        const nameDiv = driver.querySelector('.name');
        nameDiv.style.position = 'relative';
        nameDiv.insertAdjacentHTML('beforeend', `<span style="position:absolute;right:5px">${racingSkills[driverId]}</span>`);
    }
}

function watchForDriversListContentChanges(driversList) {
    if (driversList.dataset.hasWatcher !== undefined) {
        return;
    }

    // The content of #leaderBoard is rebuilt periodically so watch for changes:
    new MutationObserver(insertRacingSkillsIntoCurrentDriversList).observe(driversList, {childList: true});
    driversList.dataset.hasWatcher = 'true';
}

function getDriverIds(driversList) {
    return Array.from(driversList.querySelectorAll('.driver-item')).map(driver => getDriverId(driver));
}

function getDriverId(driverUl) {
    return +driverUl.closest('li').id.substr(4);
}

async function getRacingSkillForDrivers(driverIds) {
    const driverIdsToFetchSkillFor = driverIds.filter(driverId => ! racingSkillCacheByDriverId.has(driverId));
    if (driverIdsToFetchSkillFor.length > 0) {
        const skills = await fetchRacingSkillForDrivers(driverIdsToFetchSkillFor);
        for (let [driverId, skill] of Object.entries(skills)) {
            racingSkillCacheByDriverId.set(+driverId, skill);
        }
    }

    const resultHash = {};
    for (let driverId of driverIds) {
        resultHash[driverId] = racingSkillCacheByDriverId.get(driverId);
    }
    return resultHash;
}

function getUserIdFromCookie() {
    const userIdString = document.cookie.split(';')
        .map(entry => entry.trim())
        .find(entry => entry.indexOf('uid=') === 0)
        .replace('uid=', '');

    return parseInt(userIdString, 10);
}

function fetchRacingSkillForDrivers(driverIds) {
    return new Promise(resolve => {
        GM_xmlhttpRequest({
            method: 'GET',
            url: `${arsonBaseApiUrl}/racing-skills?expect_strings&drivers=${driverIds.join(',')}`,
            onload: ({responseText}) => resolve(JSON.parse(responseText)),
        });
    });
}

function saveRacingSkill(userId, racingSkillString) {
    return new Promise(resolve => {
        GM_xmlhttpRequest({
            method: 'POST',
            url: `${arsonBaseApiUrl}/players/${userId}/racing-skill`,
            data: JSON.stringify({racing_skill: racingSkillString}),
            headers: {'Content-Type': 'application/json'},
            onload: resolve,
        });
    });
}