// ==UserScript==
// @name Nyaa Extract Links and Images
// @version 1.0
// @description extract links and images from inside the description page to the listing page
// @author JasonC
// @match https://nyaa.si/
// @match https://nyaa.si/?p=*
// @match https://*.nyaa.si/
// @match https://*.nyaa.si/?p=*
// @grant none
// @namespace https://greasyfork.org/users/165799
// @downloadURL none
// ==/UserScript==

var pause = true;
var torRows = new Array();
var torlist = document.getElementsByClassName('torrent-list')[0];
for (var i=1;i<torlist.rows.length;i++)
{
	torRows.push(torlist.rows[i]);
}

function ExtractImage()
{
    var containers = document.getElementsByClassName('container');
    while (containers.length != 0)
        containers[0].classList.remove("container");
    if (pause)
        return;
	var torRow = torRows.shift();
	var torurl = torRow.getElementsByTagName("A")[1].href;
	var ifrm = document.createElement("IFRAME");
	ifrm.src = torurl;
	ifrm.style.width = "0px";
	ifrm.style.height = "0px";
	ifrm.onload = function() {
	var desc = this.contentDocument.getElementById('torrent-description');
        var LINKs = desc.getElementsByTagName("A");
        while (LINKs.length>0){
            var link = document.createElement("A");
            link.href = LINKs[0].href;
            link.innerHTML = LINKs[0].innerHTML;
            torRow.cells[0].appendChild(document.createElement("br"));
	torRow.cells[0].appendChild(link);
            LINKs[0].parentElement.removeChild(LINKs[0]);
		}
		var IMGs = desc.getElementsByTagName("IMG");
		while (IMGs.length>0){
			var img = document.createElement("IMG");
			img.src = IMGs[0].src;
            torRow.cells[0].appendChild(document.createElement("br"));
			torRow.cells[0].appendChild(img);
            IMGs[0].parentElement.removeChild(IMGs[0]);
		}
		this.parentElement.removeChild(this);
		if (torRows.length > 0){
			ExtractImage();}
	};
	torRow.cells[0].appendChild(ifrm);
}

(function() {
var MainBtn = document.createElement('INPUT');
    MainBtn.type = 'button';
    MainBtn.style.position = 'fixed';
    MainBtn.style.top = '10px';
    MainBtn.style.left = '10px';
    MainBtn.style.zIndex = "9999";
    MainBtn.value = 'Start';
    MainBtn.onclick = function() {
        pause = !pause;
        if (pause)
            MainBtn.value = "Stop";
        else
            MainBtn.value = "Start";
        ExtractImage();
    };
document.body.appendChild(MainBtn);
})();