Add thank-you redirect, fix altcha payload read, add /thank-you/ route and page

assets/js/form.js

@@ -34,9 +34,14 @@ document.addEventListener('DOMContentLoaded', function() {
 
             if (form.elements['website']?.value) return;
 
-            // Get altcha value from the web component
-            const altchaWidget = document.getElementById('altcha-widget');
-            const altchaPayload = altchaWidget ? (altchaWidget.value || '') : '';
+            // Get altcha payload -- web component writes a hidden input[name=altcha] into the form
+            const altchaInput = form.querySelector('input[name="altcha"]');
+            const altchaPayload = altchaInput ? (altchaInput.value || '') : '';
+            if (!altchaPayload) {
+                formStatusDiv.className = 'form-status form-status--error';
+                formStatusDiv.innerHTML = '<p>Spam check not ready. Please wait a moment and try again.</p>';
+                return;
+            }
 
             const payload = {
                 name:           name,
@@ -63,18 +68,7 @@ document.addEventListener('DOMContentLoaded', function() {
                 const data = await response.json();
 
                 if (data.ok) {
-                    formStatusDiv.className = 'form-status form-status--success';
-                    formStatusDiv.innerHTML = '<p>Thank you! Your message has been sent. We\'ll be in touch soon.</p>';
-                    form.reset();
-                    if (formLoadedAtInput) {
-                        formLoadedAtInput.value = Date.now().toString();
-                    }
-                    if (window.altcha) {
-                        window.altcha = new Altcha({
-                            challengeUrl: '/altcha-challenge/',
-                            element: document.getElementById('altcha-widget')
-                        });
-                    }
+                    window.location.href = '/thank-you/';
                 } else {
                     formStatusDiv.className = 'form-status form-status--error';
                     formStatusDiv.innerHTML = '<p>' + (data.error || 'An error occurred. Please try again.') + '</p>';

infra/nginx.conf

@@ -92,6 +92,13 @@ http {
             fastcgi_pass  127.0.0.1:9000;
         }
 
+        location = /thank-you/ {
+            include fastcgi_params;
+            fastcgi_param SCRIPT_FILENAME /var/www/html/src/api/router.php;
+            fastcgi_param QUERY_STRING    type=page&slug=thank-you;
+            fastcgi_pass  127.0.0.1:9000;
+        }
+
         set $router /var/www/html/src/api/router.php;
 
         location = / {