new: usr: add Contact page with email sending behaviour #4

assets/js/components/ContactForm.jsx

@@ -0,0 +1,83 @@
+/**
+ * This file is part of the SplendidBear Websites' projects.
+ *
+ * Copyright (c) 2026 @ www.splendidbear.org
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+import { useEffect, useRef } from 'react';
+
+/**
+ * ContactForm Component
+ *
+ * Handles reCAPTCHA v3 integration for the contact form.
+ * Intercepts form submission, executes reCAPTCHA, and submits the form with the token.
+ *
+ * @param {string} siteKey - Google reCAPTCHA site key
+ * @param {string} recaptchaFieldId - ID of the hidden recaptcha input field
+ */
+const ContactForm = ({ siteKey, recaptchaFieldId }) => {
+  const formRef = useRef(null);
+  const isSubmittingRef = useRef(false);
+
+  useEffect(() => {
+    const form = document.querySelector('.auth-form');
+
+    if (!form) {
+      console.warn('ContactForm: No .auth-form found');
+      return;
+    }
+
+    formRef.current = form;
+
+    const handleSubmit = e => {
+      e.preventDefault();
+
+      if (isSubmittingRef.current) {
+        return;
+      }
+
+      isSubmittingRef.current = true;
+
+      if ('undefined' !== typeof grecaptcha) {
+        grecaptcha.ready(() => {
+          grecaptcha
+            .execute(siteKey, { action: 'contact' })
+            .then(token => {
+              const recaptchaField = document.getElementById(recaptchaFieldId);
+
+              if (recaptchaField) {
+                recaptchaField.value = token;
+              } else {
+                console.error(`ContactForm: Recaptcha field with ID "${recaptchaFieldId}" not found`);
+              }
+
+              isSubmittingRef.current = false;
+              form.submit();
+            })
+            .catch(error => {
+              console.error('ContactForm: reCAPTCHA execution failed', error);
+              isSubmittingRef.current = false;
+            });
+        });
+      } else {
+        console.error('ContactForm: grecaptcha is not loaded');
+        isSubmittingRef.current = false;
+      }
+    };
+
+    form.addEventListener('submit', handleSubmit);
+
+    return () => {
+      if (formRef.current) {
+        formRef.current.removeEventListener('submit', handleSubmit);
+      }
+    };
+  }, [siteKey, recaptchaFieldId]);
+
+  return null;
+};
+
+export default ContactForm;