download-egghead-courses.user.js

// ==UserScript==
// @name         Download Egghead Courses
// @namespace    salembeats
// @version      1.61
// @description  For Pro users -- works with lessons (downloads individual MP4 files) and courses (downloads zip files). Append "#dl" to the end of the URL to download.
// @author       Cuyler Stuwe (salembeats)
// @include      https://egghead.io/*
// @grant        GM_xmlhttpRequest
// @grant        GM_download
// @grant        GM_openInTab
// ==/UserScript==

async function getDownloadUrl(courseStub, type) {

    if(!type) {return undefined;}
    
    // What Egghead refers to as "courses" in the public-facing URL are
    // actually referred to as "series" in the Egghead API.
    // This accounts for these and potential future naming inconsistencies.

    const typeRoutes = {
        "courses": "series",
        "lessons": "lessons"
    };

    return new Promise((resolve, reject) => {
        GM_xmlhttpRequest({
            
            url: `https://egghead.io/api/v1/${typeRoutes[type]}/${courseStub}`,
            method: "GET",
            
            onload: function(response) {

                const jsonResponse = JSON.parse(response.responseText);
                const downloadUrl = jsonResponse.download_url;

                // The "download" property in the Egghead API points
                // directly to the ZIP file to download when it comes to downloading courses.
                // However, when it comes to lessons, this property is simply another
                // level of indirection, pointing instead to an API route which has
                // the "real" file download route.
                
                if(type === "courses") {
                    resolve(downloadUrl);
                }
                else if(type === "lessons") {
                    GM_xmlhttpRequest({
                        url: downloadUrl,
                        method: "GET",
                        onload: function(response) {
                            resolve(response.responseText);
                        }
                    }); // GM_xmlhttpRequest
                } // if(type === lessons)
            } // onload
        }); // GM_xmlhttpRequest
    }); // return new Promise
}

function getCourseStub() {
    const courseStub = (window.location.href.match(/egghead.io\/courses\/([^/?#]*)/) || [null,null])[1];
    return courseStub;
}

function getLessonStub() {
    const lessonStub = (window.location.href.match(/egghead.io\/lessons\/([^/?#]*)/) || [null,null])[1];
    return lessonStub;
}

async function downloadCourse() {
    const courseStub = getCourseStub();
    const lessonStub = getLessonStub();

    let downloadType;
    if(courseStub) {
        downloadType = "courses";
    }
    else if(lessonStub) {
        downloadType = "lessons";
    }

    const downloadStub = courseStub || lessonStub;

    const downloadUrl = await getDownloadUrl(downloadStub, downloadType);
    GM_openInTab(downloadUrl, true);
}

function pollHash(e) {
    if(window.location.hash.startsWith("#dl")) { downloadCourse(); }
}

// The entry point in initiating a download is checking for #dl in the URL
// on intial load and on each hash change event.

async function main() {
    pollHash();
    window.addEventListener("hashchange", pollHash);
}

main();

should i enter this code in the console because is not downloading. what should i do

It’s a userscript, so you would install Tampermonkey and then click the “Raw” button to trigger an install.

…

On Thu, Apr 23, 2020 at 8:54 PM Austinmac56 ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ should i enter this code in the console because is not downloading. what should i do — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://gist.github.com/4044adc4eeb708b25c705444e45dc55b#gistcomment-3267429>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AE4MEMES6SDYZ3EWLFUYT7TROEEPZANCNFSM4MPYGJVQ> .