// ==UserScript==
// @name         Duolingo IME Auto-Toggler
// @namespace    mog86uk-duolingo-ime-auto-toggler
// @version      0.1
// @description  Automatically toggles between IME on and off states when doing the Japanese, Korean, and Chinese Duolingo courses (and their reverse trees).
// @author       mog86uk (a.k.a. testmoogle)
// @include      /^https?:\/\/www\.duolingo\.(com|cn)($|\/.*$)/
// @grant        GM_addStyle
// @noframes
// @downloadURL none
// ==/UserScript==

/*
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!! This userscript is for FIREFOX only !!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/

(function() {
    'use strict';
    var j4e, k4e, z4e, e4j, e4k, e4z;

    // Japanese for English speakers
    j4e =`
		textarea[placeholder="Type in Japanese"],
		input[placeholder="Type in Japanese"] {
			ime-mode: active;
		}
		textarea[placeholder="Type in English"],
		input[placeholder="Type in English"] {
			ime-mode: disabled;
		}`;

    // Korean for English speakers
	k4e =`
		textarea[placeholder="Type in Korean"],
	    input[placeholder="Type in Korean"] {
	        ime-mode: active;
	    }
	    textarea[placeholder="Type in English"],
	    input[placeholder="Type in English"] {
	        ime-mode: disabled;
	    }`;

    // Chinese for English speakers
    z4e =`
    	textarea[placeholder="Type in Chinese"],
        input[placeholder="Type in Chinese"] {
            ime-mode: active;
        }
        textarea[placeholder="Type in English"],
        input[placeholder="Type in English"] {
            ime-mode: inactive;
        }`;

    // English for Japanese speakers (a.k.a. "Japanese reverse tree")
    e4j =`
    	textarea[placeholder="日本語で入力してください"],
        input[placeholder="日本語で入力してください"] {
            ime-mode: active;
        }
        textarea[placeholder="英語で入力してください"],
        input[placeholder="英語で入力してください"] {
            ime-mode: disabled;
        }`;

    // English for Korean speakers (a.k.a. "Korean reverse tree")
    e4k =`
    	textarea[placeholder="한국어로 입력"],
        input[placeholder="한국어로 입력"] {
            ime-mode: active;
        }
        textarea[placeholder="영어로 입력"],
        input[placeholder="영어로 입력"] {
            ime-mode: disabled;
        }`;

    // English for Chinese speakers (a.k.a. "Chinese reverse tree")
    e4z =`
    	textarea[placeholder="使用中文键入"],
        input[placeholder="使用中文键入"] {
            ime-mode: active;
        }
        textarea[placeholder="使用英语键入"],
        input[placeholder="使用英语键入"] {
            ime-mode: inactive;
        }`;

    switch (document.title) {
    	case "Duolingo | Learn Japanese for free":
        	GM_addStyle(j4e);
            break;
    	case "Duolingo | Learn Korean for free":
    		GM_addStyle(k4e);
            break;
    	case "Duolingo | Learn Chinese for free":
    		GM_addStyle(z4e);
            break;
    	case "Duolingo | 無料で英語を学ぼう":
    		GM_addStyle(e4j);
            break;
    	case "듀오링고 | 무료로 영어를 배우세요.":
    		GM_addStyle(e4k);
            break;
    	case "多邻国 | 免费学习英语":
    		GM_addStyle(e4z);
            break;
    }
})();