torx.cat simplifyer

Makes usage of torx.cat easier

// ==UserScript==
// @name         torx.cat simplifyer
// @namespace    22077484cd104b49e11ececde50103401fddf83e
// @version      0.1
// @description  Makes usage of torx.cat easier
// @author       /u/AyrA_ch
// @match        https://torx.cat/*
// @grant        none
// @external     true
// ==/UserScript==

(function ($, $$) {
	var KEYFIELD = "center input";
	var DOWNLOADFIELD = "input[name=download]";
	var LINKS = ".alert-success a";

	//Try to find key field on changes and submit key
	var updateHandler = function () {
		var tbKey = $(KEYFIELD);
		if (tbKey && tbKey.value) {
			var tbDown = $(DOWNLOADFIELD);
			if (tbDown) {
				tbDown.value = tbKey.value;
				tbDown.form.submit();
			}
		}
	};

	//Find download links and set file names
	var links = $$(LINKS);
	if (links) {
		for (var i = 0; i < links.length; i++) {
			links[i].setAttribute("download", links[i].textContent);
		}
		//Directly download if only one link was found
		if (links.length === 1) {
			links[0].click();
		}
	}

	//Try to find changes in the document
	var observer = new MutationObserver(updateHandler);
	var config = {
		attributes: false,
		childList: true,
		characterData: false,
		subtree: true
	};
	observer.observe(document.body, config);
})(document.querySelector.bind(document), document.querySelectorAll.bind(document));

/*
LICENSE:
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The full license text can be found here: http://creativecommons.org/licenses/by-nc-sa/4.0/
The link has an easy to understand version of the license and the full license text.

DISCLAIMER:
THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
*/