First version, for githup; UNSTABLE, DO NOT USE!

www/intern/js/cookie-banner.js

@@ -0,0 +1,97 @@
+function getCookie(cname) {
+    let name = cname + "=";
+    let decodedCookie = decodeURIComponent(document.cookie);
+    let ca = decodedCookie.split(';');
+    for (let i = 0; i < ca.length; i++) {
+        let c = ca[i];
+        while (c.charAt(0) == ' ') {
+            c = c.substring(1);
+        }
+        if (c.indexOf(name) == 0) {
+            return true;
+        }
+    }
+    return false;
+}
+
+function displayCookieBanner(link) {
+    const div = document.createElement('div');
+    const h4 = document.createElement('h4');
+    const p = document.createElement('p');
+    const buttonJa = document.createElement('button');
+    const buttonNein = document.createElement('button');
+
+    div.classList.add('cookieBanner');
+    h4.classList.add('cookieBanner-title');
+    p.classList.add('cookieBanner-text');
+    buttonJa.classList.add('cookieBanner-btn', 'cookieBanner-btn-primary');
+    buttonNein.classList.add('cookieBanner-btn', 'cookieBanner-btn-secondary');
+
+    h4.innerHTML = "Cookie Hinweis";
+    p.innerHTML = "Die Seite, zu welcher dieser Link führt, nutzt einen technisch notwendigen Cookie. Es werden keine Cookies von Drittanbietern verwendet.";
+    div.append(h4, p);
+
+    const buttonsDiv = document.createElement('div');
+    buttonsDiv.classList.add('cookieBanner-buttons');
+
+    buttonJa.innerHTML = "Fortfahren"; 
+    buttonNein.innerHTML = "Abbrechen";
+
+    buttonJa.addEventListener('click', (el) => {
+        window.location.assign(link);
+    });
+
+    buttonNein.addEventListener('click', (el) => {
+        deleteCookieBanner();
+    });
+
+    buttonsDiv.append(buttonNein, buttonJa);
+    div.append(buttonsDiv);
+
+    $('body').append(div);
+
+    setTimeout(() => {
+        div.classList.add('show');
+    }, 10);
+}
+
+function deleteCookieBanner() {
+    const $div = $('.cookieBanner');
+
+    if ($div.length === 0) { return; }
+
+    $div.removeClass('show');
+    setTimeout(() => {
+        $div.remove();
+    }, 400);
+}
+
+/* function hasSessionCookie(callback) {
+    $.ajax({
+        url: '/myjupa/api/check-php-session.php',
+        method: 'GET',
+        cache: false, // Ensure we don't get a cached result
+        success: function(response) {
+            callback(response.cookieExists);
+        },
+        error: function() {
+            callback(false);
+        }
+    });
+}
+
+// Usage in your click handler
+$(document).on('click', 'a[href*="/myjupa/"]', function (el) {
+    el.preventDefault();
+    const target = $(this).attr("href");
+
+    hasSessionCookie(function(exists) {
+        if (exists) {
+            window.location.assign(target);
+        } else {
+            deleteCookieBanner();
+
+            displayCookieBanner(target);
+        }
+    });
+}); */