chg: usr: add share button to the overlay when the game ends #4

assets/js/mine-seeker/components/grid/GridControl.jsx

@@ -7,20 +7,31 @@
  * file that was distributed with this source code.
  */
 
-import React, { Fragment } from 'react';
+import React, { Fragment, useState } from 'react';
 import { useGame } from '@mine-contexts';
 import GridField from './GridField';
 import UserControl from '../user/UserControl';
 import GameTimer from '../GameTimer';
 import { BOMB_SYMBOLS, bombRadius } from '@mine-utils';
 
-const GridControl = ({ onClick, resign }) => {
+const GridControl = ({ gameAssoc, onClick, resign }) => {
   const {
     overlay, overlayTitle, overlaySubTitle,
     webPlayer, activePlayer, bombSelected,
-    cells, setCells,
+    cells, setCells, endRef,
   } = useGame();
 
+  const [copied, setCopied] = useState(false);
+  const shareUrl = gameAssoc ? `${window.location.origin}/battle/${gameAssoc}` : null;
+
+  const handleShare = () => {
+    if (!shareUrl) return;
+    navigator.clipboard.writeText(shareUrl).then(() => {
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2200);
+    });
+  };
+
   const handleHover = (row, col) => {
     if (!bombSelected) return;
     const activeColor = activePlayer ? 'blue' : 'red';
@@ -47,7 +58,22 @@ const GridControl = ({ onClick, resign }) => {
         <div className={`game-overlay${overlay ? '' : ' hide'}`}>
           <div className="game-overlay-window">
             <h1>{overlayTitle}</h1>
-            <h2>{overlaySubTitle}</h2>
+            {'string' === typeof overlaySubTitle ? (
+              <h2>{overlaySubTitle}</h2>
+            ) : (
+              overlaySubTitle
+            )}
+            {gameAssoc && endRef.current && (
+              <button
+                className={`game-overlay-share${copied ? ' copied' : ''}`}
+                onClick={handleShare}
+                title="Copy share link"
+                aria-label="Copy share link"
+              >
+                <i className={`fa ${copied ? 'fa-check' : 'fa-share-alt'}`} />
+                {copied ? 'Copied!' : 'Share Battle'}
+              </button>
+            )}
           </div>
         </div>
         <UserControl