// ==UserScript==
// @name         KG-Bezumie
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Shows real stats for KG-Bezumie tournament
// @author       un4given (111001)
// @match        http*://klavogonki.ru/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=klavogonki.ru
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    //!!!set this to YOUR values!!! ↓
    let initialCount={"gametype-chars":6784, "gametype-abra":1588, "Забористый":8, "Периферия+":0, "Мизинцы+":40};

    // Your code here...
    (new MutationObserver(function(changes, observer) {
        //waiting for stats-block to appear...
        if (!document.getElementById('stats-block')) return; //DOM is not ready yet

        updateStatsBlock();
        observer.disconnect();

        (new MutationObserver(function(changes, observer) {
            //update stats-block when changed...
            updateStatsBlock();
        })).observe(document.getElementById('stats-block'), {childList: true, subtree: true});
    })).observe(document, {childList: true, subtree: true});

function updateStatsBlock() {
    let stat = document.getElementById('stats-block');
    if (!stat) return; //should not be, but just in case...
    let txtCountElement = stat.getElementsByClassName('haul')[0];

    if (txtCountElement.hasClassName('changed')) return; //avoiding infinite loop

    let currentCount = getCurrentTournamentStats();

    let gameType = document.getElementById('gametype-link').className;
    let vocId = (gameType == 'gametype-voc')?document.getElementById('gametype-link').innerText : gameType;
    if (!(vocId in initialCount)) return;

    let txtCount = parseInt(txtCountElement.innerText.split(' ')[0]);
    let realCount = txtCount - initialCount[vocId];
    if (currentCount[vocId] != realCount)
    {
        currentCount[vocId] = realCount;
    }

    //count total races in all modes\vocs
    let totalCount = Object.values(currentCount).reduce((a,b)=>a+b, 0);

    txtCountElement.innerText += ` (${realCount} / ${totalCount})`;
    txtCountElement.classList.add('changed');
}

function getCurrentTournamentStats() {
    let valuesToIndexes = {'chars':'gametype-chars', 'abra':'gametype-abra', 'voc-13589':'Забористый', 'voc-38606':'Периферия+', 'voc-3714':'Мизинцы+'};
    let currentCount = {"gametype-chars":0, "gametype-abra":0, "Забористый":0, "Периферия+":0, "Мизинцы+":0};
    let allStats = document.getElementById('gametype-select').children;

    for (let i=0; i<allStats.length; i++) {
        let o = allStats[i];
        if (!o || !(o.value in valuesToIndexes)) continue;

        let idx = valuesToIndexes[o.value];
        currentCount[idx] = parseInt(o.innerText.match(/\((\d+)\)$/)[1]) - initialCount[idx];
    }

    return currentCount;
}

})();