jobTabs.js

const SCRIPT_ID = "nutabs-script";
const BASE_URL =
    "https://northeastern-csm.symplicity.com/students/app/jobs/search";
const addJobLinks = () => {
    // only attempt to do anything if it is on the base URL
    if (!location.href.startsWith(BASE_URL)) {
        return;
    }
    console.debug("NUTabs Script Triggered");
    // remove an instance of a previously inserted NUTabs script if it exists
    const prevScript = document.getElementById(SCRIPT_ID);
    if (prevScript !== null) {
        prevScript.remove();
    }
    const s = document.createElement("script");
    s.type = "text/javascript";
    s.id = SCRIPT_ID;
    const code = `
        (function getJobElements() {
            const noJobResults = document.getElementsByClassName("empty-state ng-scope").length !== 0;
            const loadingBar = document.getElementById('loading-bar');
            const jobElements = document.getElementsByClassName('list-item-body') || [];
            /* Wait for job results to appear.
            If there are no results for this search result stop waiting. */
            if ((jobElements.length === 0 || loadingBar) && !noJobResults) {
                setTimeout(getJobElements, 1000);
            } else {
                /* Replace all job title with an anchor tags and add the job URLs to it */
                for (const job of jobElements) {
                    const jobID = angular.element(job).scope().$ctrl.job.job_id;
                    const jobURL = "https://northeastern-csm.symplicity.com/students/app/jobs/detail/" + jobID;
                    job.outerHTML = job.outerHTML.replace(/^<div/, "<a id='nutabs' href='" + jobURL + "'").replace(new RegExp("</div>$"), "</a>");
                }
            }
        })();`;
    // add script to page
    try {
        s.append(document.createTextNode(code));
        (document.head || document.documentElement).appendChild(s);
    } catch (e) {
        console.error(e);
        s.text = code;
        document.body.appendChild(s);
    }
};

// Whenever the background script says a job search was performed execute the job script
chrome.runtime.connect({ name: "nutabs" }).onMessage.addListener(addJobLinks);