Avoid repeating entries until all have been picked

index.html

@@ -11,6 +11,8 @@
         #result { font-size: 2rem; font-weight: bold; color: #007bff; margin: 20px 0; min-height: 40px; }
         button { padding: 10px 20px; font-size: 1rem; border: none; background: #007bff; color: white; border-radius: 5px; cursor: pointer; }
         button:hover { background: #0056b3; }
+        button.secondary { background: #6c757d; }
+        button.secondary:hover { background: #545b62; }
         #error { color: red; font-style: italic; }
     </style>
 </head>
@@ -19,6 +21,7 @@
         <h1>Random Picker</h1>
         <div id="result">...</div>
         <button onclick="pickRandom()">Pick Again</button>
+        <button onclick="resetPool()" class="secondary">Reset</button>
         <p id="error"></p>
     </div>
 
@@ -31,19 +34,54 @@ <h1>Random Picker</h1>
             items = itemsParam.split(',').map(i => i.trim()).filter(i => i);
         }
 
+        // Pool of not-yet-picked items, persisted so reloads don't repeat entries.
+        const storageKey = 'randomPicker:' + [...items].sort().join(',');
+
+        function loadState() {
+            try {
+                const state = JSON.parse(localStorage.getItem(storageKey));
+                if (state && Array.isArray(state.remaining)) return state;
+            } catch (e) {}
+            return { remaining: [], lastPick: null };
+        }
+
+        function resetPool() {
+            localStorage.removeItem(storageKey);
+            document.getElementById('result').innerText = "...";
+            document.getElementById('error').innerText = "";
+        }
+
         function pickRandom() {
             const resultDiv = document.getElementById('result');
             const errorDiv = document.getElementById('error');
-            
+
             if (items.length === 0) {
                 resultDiv.innerText = "...";
                 errorDiv.innerText = "Error: Add items to the URL. Example: ?items=Apple,Banana,Orange";
                 return;
             }
-            
+
             errorDiv.innerText = "";
-            const randomIndex = Math.floor(Math.random() * items.length);
-            resultDiv.innerText = items[randomIndex];
+            const state = loadState();
+
+            const isRefill = state.remaining.length === 0;
+            if (isRefill) {
+                state.remaining = [...items];
+            }
+
+            // Right after a refill, don't repeat the entry the last round ended on.
+            let candidates = state.remaining;
+            if (isRefill && items.length > 1) {
+                const withoutLast = state.remaining.filter(i => i !== state.lastPick);
+                if (withoutLast.length > 0) candidates = withoutLast;
+            }
+
+            const pick = candidates[Math.floor(Math.random() * candidates.length)];
+            state.remaining.splice(state.remaining.indexOf(pick), 1);
+
+            state.lastPick = pick;
+            localStorage.setItem(storageKey, JSON.stringify(state));
+            resultDiv.innerText = pick + (state.remaining.length ? '' : '  🔄');
         }
 
         // Run automatically on page load