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E(x)-Hentai One-Click DL

Enables one-click DL archive downloading (GP/Credits are still required). Supports E-Hentai & EXHentai.

// ==UserScript==
// @name         E(x)-Hentai One-Click DL
// @description  Enables one-click DL archive downloading (GP/Credits are still required). Supports E-Hentai & EXHentai.
// @author       Daku ([email protected])
// @namespace    https://github.com/DakuTree/userscripts
// @homepage     https://github.com/DakuTree/userscripts
// @homepageURL  https://github.com/DakuTree/userscripts
// @supportURL   https://github.com/DakuTree/userscripts/issues
// @icon         https://e-hentai.org/favicon.ico
// @match        https://e-hentai.org/g/*
// @match        https://exhentai.org/g/*
// @version      1.4.1
// ==/UserScript==

/******SETTINGS******/
var showCostPopup = false; // set to true to show a confirm popup including the cost of the gallery (this is still ignored if you have free gallery downloads via donation)
var downloadOriginal = true;
/********************/

//Auto-redirect to https & non g.e (NOTE: This will be done by EH automatically some time in the future so this is just a temp-fix.)
if (location.hostname !== 'exhentai.org' && location.origin !== "https://e-hentai.org") {
	location.href = (location.href.replace(/^https?:\/\/(?:g\.)?e-hentai\.org/, "https://e-hentai.org"));
} else if (location.hostname === 'exhentai.org' && location.protocol !== 'https:') {
	location.href = (location.href.replace(/^https?:\/\/exhentai\.org/, "https://exhentai.org"));
}

var a = document.getElementsByClassName('g2')[0].getElementsByTagName('a')[0]; // "Archive Download" link
var xs = a.getAttributeNode('onclick').nodeValue.split('?')[1].split("'")[0]; //  Grab arg from onclick attr
a.removeAttribute('onclick'); // Remove default onclick

a.addEventListener('click', function () {
	var downloadGallery = true;

	if (showCostPopup) {
		var http_cost = new XMLHttpRequest();
		http_cost.open("GET", location.origin + '/archiver.php?' + xs, false);
		http_cost.onreadystatechange = function () {
			if (http_cost.readyState == 4 && http_cost.status == 200) {
				var match_cost = http_cost.responseText.match(/Download Cost:\s+(.*)/);

				//If gallery has a download cost, and is not free, ask the user if they want to DL the gallery via a confirm popup.
				if (match_cost && match_cost[1].replace(/<(?:.|\n)*?>/gm, '').replace(/&nbsp;/gi, '').trim() !== "Free!") {
					var cost = match_cost[1].replace(/<(?:.|\n)*?>/gm, '').replace(/&nbsp;/gi, '').trim();
					downloadGallery = confirm("This gallery is not free.\nThe cost is: " + cost + ".\nAre you sure you want to DL?");
				}
			}
		};
		http_cost.send();
	}

	if (downloadGallery) {
		var http = new XMLHttpRequest();
		var params = "dlcheck=Download Original Archive&dltype=org";
		if (!downloadOriginal) {
			params = "dlcheck=Download Resample Archive&dltype=res";
		}
		http.open("POST", location.origin + '/archiver.php?' + xs, true);
		http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

		http.onreadystatechange = function () {
			if (http.readyState == 4 && http.status == 200) {
				if (http.responseText == 'Insufficient funds.') {
					alert('Insufficient funds.');
				}
				else if (http.responseText.indexOf("Please wait...") !== -1) { //Check if pop-up opened.
					var match = /<a href="(http.*?)"/g.exec(http.responseText);
					window.location.href = match[1] + "?start=1";
				}
				else {
					//WTF?
				}
			}
		};
		http.send(params);
	}

	return false;
}, false);