// ==UserScript==
// @name         JetBrainsManualJapaneseCustom
// @namespace    cypher256.JetBrainsManualJapaneseCustom
// @version      1.5
// @description  JetBrainsマニュアルの日本翻訳版ページと公式を行ったり来たり出来ます（右クリック開く対応）
// @author       cypher256 (origin mikan-megane)
// @match        https://www.jetbrains.com/help/*
// @match        https://pleiades.io/help/*
// @run-at       document-end
// @grant        none
// @downloadURL none
// ==/UserScript==

window.addEventListener('load', function() {
    'use strict';
    var official = location.hostname == 'www.jetbrains.com';

    function replaceLink() {
        return 'https://' + (official ? 'pleiades.io' : 'www.jetbrains.com') + location.href.replace(/^https:..[^\/]+/, '');
    }

    function toggleJapanese(e) {
        var a = document.getElementById('help_link');
        a.href = replaceLink();
        e.stopPropagation();
    }

    var wapper = document.createElement('div');
    wapper.setAttribute('class', 'group__item');
    var link = document.createElement('a');
    link.setAttribute('id', 'help_link');
    link.setAttribute('href', replaceLink());
    link.setAttribute('class', 'dropdown__trigger-value');
    link.appendChild(document.createTextNode(official ? '日本語ページへ' : '英語ページへ'));
    link.addEventListener('click', toggleJapanese, false);
    link.addEventListener('mousedown', toggleJapanese, false);
    wapper.appendChild(link);

    var $links = document.querySelector('.header__links');
    if ($links) {
        $links.insertBefore(wapper, $links.firstChild);
    }
    else {
        var $divider = document.querySelector('.header__divider');
        if ($divider) {
            wapper.style.margin = '0 10px 0 0';
            $divider.parentNode.insertBefore(wapper, $divider.nextSibling);
        }
    }
});