// ==UserScript==
// @name				tinyurl.com - URL shorten button
// @name:zh-TW			tinyurl.com 縮短網址按鈕
// @name:zh-CN			tinyurl.com 缩短网址按钮
// @description			Add a URL shorten button to the bottom left corner. It will create a new window for the shortened URL of cutt.ly
// @description:zh-TW	在頁面左下角設置一個縮短網址的按鈕，這會開個新視窗來檢視 tinyurl 的縮址結果
// @description:zh-CN	在页面左下角设置一个缩短网址的按钮，这会开个新视窗来查看 tinyurl 的缩址结果
// @namespace			https://greasyfork.org/zh-TW/users/393133-evan-tseng
// @version				0.20
// @author				Evan Tseng
// @run-at				document-end
// @include				*://*
// @exclude				*://tinyurl.com/*
// @grant				none
// @downloadURL none
// ==/UserScript==

(function() {
	'use strict';
	if(self==top) {
		var addTinyButton = (function() {
			if(document.readyState !== "loading") {
				const newWindow = window.open,
					  TinyURL = 'https://tinyurl.com/create.php?url=' + encodeURIComponent(location.href);
				let strWindowFeatures = 'width=800,height=400,left='+((screen.width-800)/2)+',top='+((screen.height-400)/4)+',menubar=no,toolbar=no,location=no,status=no',
					cssStyle = document.createElement('style'),
					css = `
.__shorten_wrap__ { display:block; position: fixed; bottom:27mm; left:-24pt; z-index:2147483646 }
.__shorten_btn__ { font: 400 11pt Helvetica!important; width:auto!important; color:#334!important; text-shadow:1px -1px rgba(255,255,255,.6); background:linear-gradient(5deg, rgba(170,170,175,.85) 0, rgba(210,210,215,.8) 50%, rgba(170,170,175,.85) 100%)!important; padding:.3em .6em 1em!important; margin:0!important; line-height:1!important; border:1px solid rgba(0,0,0,.4)!important; border-radius:6px 6px 0 0!important; white-space:nowrap; cursor:pointer!important; transform:rotate(90deg); transition:.15s!important }
.__shorten_btn__:hover { background:linear-gradient(5deg, rgba(190,190,190,.95) 0, rgba(230,230,230,.95) 50%, rgba(190,190,190,.95) 100%)!important; border:1px solid rgba(0,0,0,.4)!important; box-shadow:1px 0 4pt rgba(0,0,0,.5)!important }
.__shorten_btn__:active { color:#cdf!important; text-shadow:-1px 1px #000!important; background:rgba(125,125,133,.8)!important; border-color:rgba(255,255,255,.6)!important; box-shadow:inset 1px 0 4pt rgba(0,0,0,.7)!important; transition:0s!important }
@media not screen { .__shorten_wrap__ { display:none } }`;
				if(cssStyle.styleSheet)	cssStyle.styleSheet.cssText = css;
				else	cssStyle.appendChild(document.createTextNode(css));
				document.querySelector('head').appendChild(cssStyle);

				let shortenWrap = document.createElement('div');
				shortenWrap.setAttribute("class", "__shorten_wrap__");
				document.body.appendChild(shortenWrap);

				let shortenButton = document.createElement('button');
				shortenButton.setAttribute("class", "__shorten_btn__");
				shortenButton.innerText = "TinyURL";
				shortenWrap.appendChild(shortenButton);

				shortenButton.addEventListener("click", function(){
					newWindow(TinyURL, "", strWindowFeatures);
				});

			}
			else setTimeout(addTinyButton, 500);
		})();
	}
})();