first commit (1.0, Firefox initial version)

.gitignore

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+web-ext-artifacts

background.js

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+"use strict";
+
+// these dicks would redirect you to the main page if you visit the link directly
+// so you have to do extra clicks just to get to the login page
+// so they count that you will read their articles and watch their ads
+// in a webapp we all paid for, disgusting
+function appendReferer(e) {
+    e.requestHeaders.push({name: "Referer", value: "https://portal.librus.pl/rodzina"});
+    return {requestHeaders: e.requestHeaders};
+}
+
+browser.webRequest.onBeforeSendHeaders.addListener(appendReferer,
+    {urls: ["https://portal.librus.pl/rodzina/synergia/loguj"]},
+    ["blocking", "requestHeaders"]
+);
+
+browser.webRequest.onBeforeRequest.addListener(e => {
+    let redirectUrl = "data:application/json;charset=utf-8," + encodeURIComponent('{}'); // lol that triggers CORS
+    return {redirectUrl};
+},
+    {urls: ["https://portal.librus.pl/ad*"]},
+    ["blocking"]
+);
+
+browser.webRequest.onBeforeRequest.addListener(e => {
+    return {redirectUrl: 'https://portal.librus.pl/rodzina/synergia/loguj'};
+},
+    {urls: ["https://synergia.librus.pl/loguj", "https://synergia.librus.pl/loguj/przenies*"]},
+    ["blocking"]
+);

contentscript.js

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+"use strict";
+
+let url = document.location.toString();
+let didInjectCssAlready = false;
+
+console.log("[Librus Enhancer] loading start", {readyState: document.readyState, url});
+document.addEventListener('readystatechange', ev => {
+    console.log("[Librus Enhancer] ready?", {readyState: document.readyState, url});
+    if (document.readyState !== 'complete') return;
+    onDocumentReady();
+});
+if (document.readyState === 'complete')
+    onDocumentReady(); // execute immediately
+setTimeout(() => modifyStuff(), 500); // just to make sure and catch the late loaded stuff
+setTimeout(() => modifyStuff(), 1500); // apparently the one above was not enough...
+
+// separated function in case I want to add something to run on document ready once
+function onDocumentReady() {
+    modifyStuff();
+}
+
+function modifyStuff() {
+
+    //let date = new Date(); console.log("modifyStuff start");
+    $("#cookieBox").remove();
+    let css = '';
+
+    if (url.startsWith('https://portal.librus.pl/')) {
+
+        $('.btn[href="https://konto.librus.pl/sklep"]').remove(); // make more space for button by removing bs
+        let ad1 = $('.article-list').children()[0];
+        if (ad1 && ad1.classList && !ad1.classList.contains('row')) ad1.remove();
+        $('.article__container').has('.article__sponsored').remove();
+        //css += '.article__container--small { flex: 1; }'; // don't leave out weird blank spaces
+        css += '.article__container { flex: 1; }'; // don't leave out weird blank spaces
+
+    }
+
+    if (url.startsWith('https://portal.librus.pl/rodzina') && url !== 'https://portal.librus.pl/rodzina/synergia/loguj') {
+
+        if (!window.didInsertConvenientLoginButton) {
+            let html = '<a class="btn btn-synergia-top btn-navbar" href="https://portal.librus.pl/rodzina/synergia/loguj">ZALOGUJ</a>';
+            if ($("a.btn-synergia-top:contains('LIBRUS Synergia')").after(html))
+                window.didInsertConvenientLoginButton = true;
+        }
+
+    }
+
+    if (url === 'https://portal.librus.pl/rodzina/synergia/loguj') {
+        $("#synergiaLogin").next().remove();
+    }
+
+    if (url === 'https://portal.librus.pl/rodzina') {
+        $('.row > div').not('.article__container').has("img[src*='librus_aplikacja_mobilna'").remove(); // inline ad
+        $('.row > div').not('.article__container').has("img[src*='aplikacjamobilna'").remove(); // inline ad
+    }
+
+    if (url === 'https://portal.librus.pl/') {
+        $('.widget-container--small').remove(); // right-side ad
+        if (!window.didInsertMainPageDirectLoginButton) {
+            let html = '<a class="btn btn-third btn-navbar" href="https://portal.librus.pl/rodzina/synergia/loguj" style="width: 130px;">ZALOGUJ OD RAZU</a>';
+            if ($("a.btn-third:contains('Zaloguj jako')").before(html))
+                window.didInsertMainPageDirectLoginButton = true;
+        }
+    }
+
+    if (url === 'https://synergia.librus.pl/uczen/index') {
+        let b = $('html body div#page.systema div#body div.container.static.welcome-page.student div.container-background div.content-box h1 b');
+        if (b && !!b.length && b.text() === 'ułatwia Twój każdy dzień w szkole!') {
+            b.text('utrudnia Twój każdy dzień w szkole!');
+        }
+    }
+
+    if (url === 'https://www.librus.pl/') {
+        if (!window.didInsertLibrusPageDirectLoginButton) {
+            let html = '<a class="menuLink" href="https://portal.librus.pl/rodzina/synergia/loguj" style="font-weight: bold; text-decoration: underline;">ZALOGUJ OD RAZU</a>';
+            if ($("a.menuLink[href='/kontakt/']").after(html))
+                window.didInsertLibrusPageDirectLoginButton = true;
+        }
+    }
+
+    if (css && !didInjectCssAlready) {
+        didInjectCssAlready = true;
+        let style = document.createElement('style');
+        style.innerHTML = css;
+        document.head.appendChild(style)
+        console.log("[Librus Enhancer] Injected CSS", style);
+    }
+
+    //console.log("modifyStuff end", (+new Date() - date), 'ms'); // takes up to 2 ms
+
+}
+
+const PAGE_REFRESH_INTERVAL = 3 * 60 * 1000;
+if (url.startsWith('https://synergia.librus.pl/')) {
+
+    let isLoggedIn = !!$('#user-section').length;
+    let div = $('#page .container .inside');
+    let isLoggedOut = div && !!div.length && div.text() === 'Brak dostępu';
+
+    if (isLoggedIn && !isLoggedOut) {
+        console.log("[Librus Enhancer] You are logged in!");
+        setInterval(() => refreshPageInBackground(), PAGE_REFRESH_INTERVAL);
+        //setTimeout(() => refreshPageInBackground(), 3000); // testing
+    } else {
+        console.log("[Librus Enhancer] You are logged out!");
+        if (isLoggedOut) {
+            let button = $("input[value='Loguj']");
+            if (button && !!button.length) {
+                button.attr('onclick', '');
+                button.click(ev => {
+                    ev.preventDefault();
+                    ev.stopImmediatePropagation();
+                    window.location.replace('https://portal.librus.pl/rodzina/synergia/loguj'); // take us to the login page directly...
+                });
+            }
+        }
+    }
+
+}
+
+// prevent session expiration, so we don't get logged out...
+function refreshPageInBackground() {
+    console.log("[Librus Enhancer] Running refreshPageInBackground in page context...");
+    /*fetch('https://synergia.librus.pl/uczen/index', { // content.fetch crashes tab lol
+        //mode: 'same-origin',
+        cache: 'no-cache',
+        credentials: 'include'
+    }).then(response => console.log("[Librus Enhancer] Refreshed page in background to preserve the session (response status: " + response.status + ", length: " + response.headers.get("content-length") + ")"));
+    */
+
+    let code = `fetch('https://synergia.librus.pl/uczen/index', {
+        cache: 'no-cache',
+        credentials: 'include'
+    }).then(response => console.log("[Librus Enhancer] Refreshed page in background to preserve the session (response status: " + response.status + ", length: " + response.headers.get("content-length") + ")"));`;
+    window.eval(code);
+}

jsconfig.json

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+{
+    "typeAcquisition": {
+        "include": [
+            "firefox-webext-browser",
+            "jquery"
+        ]
+    }
+
+}

manifest.json

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+{
+
+    "manifest_version": 2,
+    "name": "Librus Enhancer",
+    "version": "1.0",
+
+    "description": "Sprawia, że Librus jest trochę mniej antyludzki.",
+
+    "icons": {
+        "48": "icons/icon_48.png"
+    },
+
+    "content_scripts": [
+        {
+            "matches": [
+                "https://portal.librus.pl/*",
+                "https://synergia.librus.pl/*",
+                "https://www.librus.pl/*"
+            ],
+            "js": ["jquery.slim.min.js", "contentscript.js"]
+        }
+    ],
+
+    "permissions": [
+        "webRequest", "webRequestBlocking", "https://portal.librus.pl/*", "https://synergia.librus.pl/*"
+    ],
+
+    "background": {
+        "scripts": ["background.js"]
+    }
+
+}