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src/views/InstructorView.js

@@ -115,7 +115,7 @@ export async function renderInstructorView() {
                         <button id="btn-show-stage" class="bg-blue-600 hover:bg-blue-500 text-white font-bold py-3 px-8 rounded-xl flex items-center space-x-2 text-lg">
                             <span>🖥️ 投放到大螢幕 (本機)</span>
                         </button>
-                        <button id="btn-reject-task" class="bg-red-600 hover:bg-red-500 text-white font-bold py-3 px-8 rounded-xl flex items-center space-x-2 text-lg shadow-lg">
+                        <button id="btn-reject-task" onclick="window.rejectCurrentSubmission()" class="bg-red-600 hover:bg-red-500 text-white font-bold py-3 px-8 rounded-xl flex items-center space-x-2 text-lg shadow-lg">
                             <span>🛑 退回重做 (Reject)</span>
                         </button>
                         <!-- Future Feature: Send to Students -->
@@ -592,6 +592,42 @@ export function setupInstructorEvents() {
         }
     };
 
+    // Global Reject Function
+    window.rejectCurrentSubmission = async () => {
+        const modal = document.getElementById('broadcast-modal');
+        if (!modal) return;
+
+        const userId = modal.dataset.userId;
+        const challengeId = modal.dataset.challengeId;
+        const roomCode = localStorage.getItem('vibecoding_room_code');
+
+        console.log('Reject attempt (Global) - Click details:', { dataset: modal.dataset, userId, challengeId, roomCode });
+
+        if (!userId || !challengeId) {
+            console.error('Missing userId or challengeId');
+            alert("錯誤：無法讀取學員資訊 (Missing ID)");
+            return;
+        }
+
+        if (confirm('確定要退回此學員的進度嗎？學員將需要重新作答。')) {
+            try {
+                const { resetProgress } = await import("../services/classroom.js");
+                const success = await resetProgress(userId, roomCode, challengeId);
+
+                if (success) {
+                    alert('已成功退回，學員將需要重新作答。');
+                    window.closeBroadcastModal();
+                } else {
+                    alert('找不到該學員的進度紀錄，無法退回 (Document Not Found)。');
+                }
+            } catch (e) {
+                console.error("Reject failed:", e);
+                alert('退回失敗: ' + e.message);
+            }
+        }
+    };
+
+    /*
     // Bind Reject Button Logic (Delegated)
     if (!window._rejectListenerAttached) {
         window._rejectListenerAttached = true;
@@ -633,6 +669,7 @@ export function setupInstructorEvents() {
             }
         });
     }
+    */
 
     let roomUnsubscribe = null;
     let currentInstructor = null;