doujinstyle.com.download-command.user.js

// ==UserScript==
// @name         DoujinStyle Download Command
// @namespace    http://tampermonkey.net/
// @version      0.3
// @description  Replaces donwload button with download link. You will need to disable Same Origin Policy in your browser (using addon like https://addons.mozilla.org/en-US/firefox/addon/cors-everywhere).
// @author       moh@yutsuku.net
// @match        https://doujinstyle.com/
// @match        https://doujinstyle.com/?p=home*
// @match        https://doujinstyle.com/?p=page&type=1*
// @grant        none
// @run-at       document-end
// @updateURL    https://gist.github.com/yutsuku/ad383b80a86651c96a754504bd9ebc19/raw/doujinstyle.com.download-command.user.js
// @downloadURL  https://gist.github.com/yutsuku/ad383b80a86651c96a754504bd9ebc19/raw/doujinstyle.com.download-command.user.js
// ==/UserScript==

(function() {
    'use strict';

    const button = document.querySelector('#downloadForm')
    button.insertAdjacentHTML('beforebegin',
                              `<div id="download-cmd"></div>`
                             )
    button.addEventListener('click', (event) => {
        let params = {}
        const action = event.target.parentNode.action
        const method = event.target.parentNode.method

        event.target.parentNode.querySelectorAll('input').forEach( (input) => {
            if (input.name && input.value) {
                params[input.name] = input.value
            }
        })
        params[event.target.name] = event.target.value

        fetch(action, {
            method: method,
            body: new URLSearchParams(params),
            redirect: 'follow'
        })
       .then((response) => {
            window.response = response;
            console.log(response)
            if (response.redirected) {
                const downloadCmd = event.target.parentNode.querySelector('#download-cmd')
                let link = response.url;
                if (response.url.includes('mega.')) {
                    link = `mega-get -q --ignore-quota-warn ${response.url}`
                }
                downloadCmd.innerHTML =
                    `<input onclick="this.select()" type="text" value="${link}">`
            }
        })
        .catch((reject) => {
            console.log(reject)
        })

        event.preventDefault()
    }, true)
    button.click()
})();