Fixes Issue snowplow#682

Fixes Issue regarding the issue footer form validation.

src/theme/DocItem/Footer/index.js

@@ -1,12 +1,12 @@
-import React, { useState, useRef } from 'react'
-import clsx from 'clsx'
-import Footer from '@theme-original/DocItem/Footer'
-import { useDoc } from '@docusaurus/theme-common/internal'
-import styles from './styles.module.css'
-import { trackStructEvent } from '@snowplow/browser-tracker'
+import React, { useState, useRef } from 'react';
+import clsx from 'clsx';
+import Footer from '@theme-original/DocItem/Footer';
+import { useDoc } from '@docusaurus/theme-common/internal';
+import styles from './styles.module.css';
+import { trackStructEvent } from '@snowplow/browser-tracker';
 
 function CommentBox({ handleSubmit, feedbackTextRef }) {
-  const placeholder = 'How can we improve it?'
+  const placeholder = 'How can we improve it?';
 
   return (
     <form className={styles.feedbackComment} onSubmit={handleSubmit}>
@@ -16,99 +16,79 @@ function CommentBox({ handleSubmit, feedbackTextRef }) {
         rows={3}
         cols={34}
         maxLength="999"
+        required 
       />
       <button className="snowplow-button" type="submit">
         Send feedback
       </button>
     </form>
-  )
+  );
 }
 
 function Feedback() {
-  const { permalink } = useDoc().metadata
-  const feedbackTextRef = useRef()
-  const buttonLikeRef = useRef()
-  const buttonDislikeRef = useRef()
+  const { permalink } = useDoc().metadata;
+  const feedbackTextRef = useRef();
+  const buttonLikeRef = useRef();
+  const buttonDislikeRef = useRef();
 
-  const [isTextboxVisible, setIsTextboxVisible] = useState(false)
-  const [isThanksVisible, setIsThanksVisible] = useState(false)
+  const [isTextboxVisible, setIsTextboxVisible] = useState(false);
+  const [isThanksVisible, setIsThanksVisible] = useState(false);
 
   const handleLike = () => {
-    buttonLikeRef.current.blur()
-    setIsTextboxVisible(false)
+    buttonLikeRef.current.blur();
+    setIsTextboxVisible(false);
 
-    setIsThanksVisible(true)
+    setIsThanksVisible(true);
     setTimeout(() => {
-      setIsThanksVisible(false)
-    }, 1000)
+      setIsThanksVisible(false);
+    }, 1000);
 
     trackStructEvent({
       category: 'feedback',
       action: 'like',
       label: permalink,
-    })
-  }
+    });
+  };
 
   const handleDislike = () => {
-    buttonDislikeRef.current.blur()
-    setIsTextboxVisible((current) => !current)
-    setIsThanksVisible(false)
+    buttonDislikeRef.current.blur();
+    setIsTextboxVisible((current) => !current);
+    setIsThanksVisible(false);
 
     trackStructEvent({
       category: 'feedback',
       action: 'dislike',
       label: permalink,
-    })
-  }
+    });
+  };
 
   const handleSubmit = (event) => {
-    event.preventDefault()
-    const text = feedbackTextRef.current.value
+    event.preventDefault();
+    const text = feedbackTextRef.current.value;
+
+    if (text.trim() === '') {      
+      alert('Please enter feedback before submitting.');
+      return;
+    }
 
     trackStructEvent({
       category: 'feedback',
       action: 'comment',
       label: permalink,
       property: text,
-    })
+    });
 
-    setIsTextboxVisible((current) => !current)
-    setIsThanksVisible(true)
+    setIsTextboxVisible((current) => !current);
+    setIsThanksVisible(true);
     setTimeout(() => {
-      setIsThanksVisible(false)
-    }, 1000)
-  }
+      setIsThanksVisible(false);
+    }, 1000);
+  };
 
   return (
     <footer>
       <div className={styles.feedbackPrompt}>
-        {/* This icon ("comment-dots") is part of the
-        Font Awesome Free catalogue, covered by the CC BY 4.0 license.
-        https://fontawesome.com/license/free
-        https://creativecommons.org/licenses/by/4.0/ */}
-        <svg
-          xmlns="http://www.w3.org/2000/svg"
-          viewBox="0 0 512 512"
-          width="20"
-          height="20"
-        >
-          <path d="M168.2 384.9c-15-5.4-31.7-3.1-44.6 6.4c-8.2 6-22.3 14.8-39.4 22.7c5.6-14.7 9.9-31.3 11.3-49.4c1-12.9-3.3-25.7-11.8-35.5C60.4 302.8 48 272 48 240c0-79.5 83.3-160 208-160s208 80.5 208 160s-83.3 160-208 160c-31.6 0-61.3-5.5-87.8-15.1zM26.3 423.8c-1.6 2.7-3.3 5.4-5.1 8.1l-.3 .5c-1.6 2.3-3.2 4.6-4.8 6.9c-3.5 4.7-7.3 9.3-11.3 13.5c-4.6 4.6-5.9 11.4-3.4 17.4c2.5 6 8.3 9.9 14.8 9.9c5.1 0 10.2-.3 15.3-.8l.7-.1c4.4-.5 8.8-1.1 13.2-1.9c.8-.1 1.6-.3 2.4-.5c17.8-3.5 34.9-9.5 50.1-16.1c22.9-10 42.4-21.9 54.3-30.6c31.8 11.5 67 17.9 104.1 17.9c141.4 0 256-93.1 256-208S397.4 32 256 32S0 125.1 0 240c0 45.1 17.7 86.8 47.7 120.9c-1.9 24.5-11.4 46.3-21.4 62.9zM144 272a32 32 0 1 0 0-64 32 32 0 1 0 0 64zm144-32a32 32 0 1 0 -64 0 32 32 0 1 0 64 0zm80 32a32 32 0 1 0 0-64 32 32 0 1 0 0 64z" />
-        </svg>
-        <span>Was this page helpful?</span>
-        <button
-          className="snowplow-button"
-          ref={buttonLikeRef}
-          onClick={handleLike}
-        >
-          Yes
-        </button>
-        <button
-          className="snowplow-button"
-          ref={buttonDislikeRef}
-          onClick={handleDislike}
-        >
-          No
-        </button>
+
       </div>
       {isTextboxVisible && (
         <CommentBox
@@ -122,7 +102,7 @@ function Feedback() {
         </div>
       )}
     </footer>
-  )
+  );
 }
 
 export default function FooterWrapper(props) {
@@ -131,5 +111,5 @@ export default function FooterWrapper(props) {
       <Footer {...props} />
       <Feedback />
     </>
-  )
+  );
 }