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// ==UserScript==
// @name         KG_DailyProgress
// @namespace    klavogonki
// @version      2.0.0
// @description  Visual progress bar for "Daily Task"
// @author       AkaSomeone
// @match        *://klavogonki.ru/*
// @grant        none
// @icon         https://www.google.com/s2/favicons?sz=64&domain=klavogonki.ru
// ==/UserScript==

const initializationTimeout = 300; // Timeout duration in milliseconds

let observer;

const setupObserver = () => {
    window.MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
    const target = document.querySelector('.daily-task');
    if (!target) {
        console.log('DailyProgress: Task panel not found, cannot continue.');
        return false;
    }
    observer = new MutationObserver((mutations) => {
        mutations.forEach((mutation) => {
            if (mutation.attributeName === 'original-title') {
                updateProgress();
            }
        });
    });
    observer.observe(target, { attributes: true });
    return true;
};

const areElementsAvailable = () => {
    const gauge = document.querySelector('.daily-task');
    return !!gauge;
};

const waitAndInitialize = () => {
    // Use setTimeout with the specified timeout duration
    setTimeout(() => {
        if (areElementsAvailable()) {
            updateProgress();
            setupObserver();
        } else {
            console.log(`DailyProgress: Task panel not found after ${initializationTimeout}ms, initialization aborted.`);
        }
    }, initializationTimeout);
};

const getOrCreateProgressBar = (gauge) => {
    let pb = document.getElementById('daily-task-progress-bar');

    if (pb) return pb;

    pb = document.createElement('div');
    pb.id = 'daily-task-progress-bar';
    pb.style.position = 'absolute';
    pb.style.bottom = 0;
    pb.style.background = 'url(data:image/gif;base64,R0lGODlhAQADAJEAACiMMSRvKx9SJP///yH5BAEAAAMALAAAAAABAAMAAAICRFQAOw==)';
    pb.style.height = '3px';
    pb.style.width = 0;

    const pb_bg = document.createElement('div');
    pb_bg.style.position = 'absolute';
    pb_bg.style.bottom = 0;
    pb_bg.style.background = 'url(data:image/gif;base64,R0lGODlhAQADAJEAAK+vr4+Pj3Nzc////yH5BAEAAAMALAAAAAABAAMAAAICVFAAOw==)';
    pb_bg.style.height = '3px';
    pb_bg.style.width = '100%';

    gauge.appendChild(pb_bg);
    gauge.appendChild(pb);

    return pb;
};

const getDailyTaskGauge = () => {
    const elements = document.getElementsByClassName('daily-task');
    if (!elements.length) throw new Error('Element not found.');
    return elements[0];
};

const getProgress = (gauge) => {
    const customProps = gauge.getAttributeNames();
    if (!customProps.includes('original-title')) throw new Error('Attribute \'original-title\' not found.');

    const title = gauge.getAttribute('original-title');
    if (!title) {
        return null;
    }

    if (title === 'Completed') {
        return { done: 1, total: 1 };
    }

    const match = /(\d{1,2})\D+(\d{1,2})/.exec(title);
    if (!match || match.length !== 3) {
        console.log(`DailyProgress: Unexpected title format. Title: ${title}`);
        return null; // or handle the unexpected format accordingly
    }

    const done = parseInt(match[1]);
    const total = parseInt(match[2]);
    if (isNaN(done) || isNaN(total)) {
        console.log(`DailyProgress: Race count not found in title. Title: ${title}`);
        return null; // or handle the missing race count accordingly
    }

    return { done, total };
};

const updateProgress = () => {
    try {
        const gauge = getDailyTaskGauge();
        const progress = getProgress(gauge);
        if (progress === null || !progress.done || progress.done === progress.total) {
            return;
        }
        const pb = getOrCreateProgressBar(gauge);
        pb.style.width = `${(100 * progress.done / progress.total)}%`;
    } catch (error) {
        console.log(`DailyProgress: Error updating. ${error.message}`);
    }
};

// Start initialization
waitAndInitialize();
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