// ==UserScript==
// @name        Kyrylkoklad for Replace
// @version     10-Feb-2021
// @author      Jurid
// @description Jurid transliteration for replace.org.ua
// @include     https://replace.org.ua/*
// ==/UserScript==

var exception = '([0-9ABCDEFGHIJKLMNOPQRSTUVWXYZЩЦЧЄЮЯЬАБВГҐДЕЖЗИІКЛМНОПРСТУФХШЙЇ\-]'
var scripts = {
    'tcc': 'чч',
    'tss': 'цц',
    'w': 'вв',
    'ctc': 'щ',
    'ts': 'ц',
    'tc': 'ч',
    'ja': 'я',
    'ju': 'ю',
    'je': 'є',
    'ji': 'ї',
    'jy': 'ї',
    'j': 'й',
    'a': 'а',
    'b': 'б',
    'v': 'в',
    'h': 'г',
    'q': 'ґ',
    'd': 'д',
    'e': 'е',
    'g': 'ж',
    'z': 'з',
    'y': 'и',
    'i': 'і',
    'k': 'к',
    'l': 'л',
    'm': 'м',
    'n': 'н',
    'o': 'о',
    'p': 'п',
    'r': 'р',
    's': 'с',
    't': 'т',
    'u': 'у',
    'f': 'ф',
    'x': 'х',
    'c': 'ш',
}

function findHtml(text) { // Spesific symbols translation
    var find = document.createElement("textarea")
    find.innerHTML = text
    return find.value
}

function transliteration(value) {
    for (let letter in scripts) {
        let fullOut = '$1' + scripts[letter].toUpperCase() + '$2'
        value = value // Uppercases (two full, one partly), Standart
            .replace(new RegExp(exception + '{1,})' + letter.toUpperCase() + exception + '{0,})', 'g'), fullOut)
            .replace(new RegExp(exception + '{0,})' + letter.toUpperCase() + exception + '{1,})', 'g'), fullOut)
            .replace(new RegExp(letter[0].toUpperCase() + letter.slice(1), 'g'), scripts[letter][0].toUpperCase() + scripts[letter].slice(1))
            .replace(new RegExp(letter, 'g'), scripts[letter])
    }
    let softLetters = 'щцчджзлнрстш'
    let lowerSoft = '([' + softLetters + softLetters.toUpperCase() + '])'
    let upperSoft = '([' + softLetters.toUpperCase() + '])'
    return value.replace(new RegExp(lowerSoft + 'й', 'g'), '$1ь').replace(new RegExp(upperSoft + 'Й', 'g'), '$1Ь')
}

(function () {
    const posts = Array.from(document.querySelectorAll('.post'));
    posts.forEach(post => {
        const a = post.querySelector('a');
        if (a.innerText === 'dot') {
            let text = post.querySelector('.entry-content').cloneNode(true)
            let walker = document.createTreeWalker(text, NodeFilter.SHOW_ALL, null, false)
            let skips = ['CODE']
            let node
            while (node = walker.nextNode()) {
                if (skips.includes(walker.currentNode.tagName)) walker.nextNode()
                if (node.nodeValue !== null) node.nodeValue = transliteration(findHtml(node.nodeValue).normalize('NFD'))
            }
            post.querySelector('.entry-content').innerHTML = text.innerHTML
        }
    });
})()