// ==UserScript==
// @name		ruten.com.tw
// @name:zh-TW	露天拍賣
// @description			change page using keyboard arrow key. search products in Ruten as default (exclude ebay, Rakuten).
// @description:zh-TW	搜尋結果用鍵盤方向鍵翻頁，搜尋時預設只找露天站內商品（排除 ebay, 樂天）
// @namespace	https://greasyfork.org/zh-TW/users/393133-evan-tseng
// @version		0.1
// @author		Evan Tseng
// @match		*://*.ruten.com.tw/*
// @grant		none
// @downloadURL none
// ==/UserScript==

(function() {
	'use strict';

	document.addEventListener("keydown", function(e) {
		if(document.querySelector("input:focus, textarea:focus")) return;
		e = e || window.event;
		try{
			switch(e.which || e.keyCode) {
				case 39: // right
				case 68: // 'd'
					document.querySelector(".ui-search .Ct .pagination .next, .ui-seller .Ct .pagination li.next a, .rt-store-pagination li.next>a, .rt-jqmodal-panel .img-popup-content .rti-chevron-right-default").click();
					break;
				case 37: // left
				case 65: // 'a'
					document.querySelector(".ui-search .Ct .pagination .prev, .ui-seller .Ct .pagination li.prev a, .rt-store-pagination li.prev>a, .rt-jqmodal-panel .img-popup-content .rti-chevron-left-default").click();
					break;
				case 38: // up
				case 87: // 'w'
					document.querySelector(".item-gallery-main-image img.js-main-img").click();
					break;
				case 13: // enter
				case 27: // esc
					document.querySelector(".rt-jqmodal-jqmClose").click();
			}
		} catch(e){}
	});

	if(window.location.href.indexOf('//find.ruten.com.tw/s/?')>0) {
		var watchElm=null;
		var watchOpt = { 'childList': true },
			redir = function(){
				if(window.location.href.indexOf("platform=")==-1 &&
				  window.location.href.indexOf("area=")==-1){
					window.location.href=window.location.href+"&platform=ruten";
				}
			}
		const observer = new MutationObserver(redir);

		redir();
		var waitt=window.setInterval(function(){
			if(watchElm=document.querySelector("#ProdTopPgContainer .info")){
				observer.observe(watchElm, watchOpt);
				clearInterval(waitt);
			}
		},300);
	}

})();