Update app.py

app.py

@@ -1,5 +1,5 @@
 # app.py
-# @title Beer Game Final Version (v12 - v3 Base + Logic/UI Fix)
+# @title Beer Game Final Version (v13 - Hidden Leaderboard for Instructor)
 # -----------------------------------------------------------------------------
 # 1. Import Libraries
 # -----------------------------------------------------------------------------
@@ -38,6 +38,7 @@ FACTORY_LEAD_TIME = 1
 FACTORY_SHIPPING_DELAY = 1 
 HOLDING_COST = 0.5
 BACKLOG_COST = 1.0
+ADMIN_PASSWORD = "lixinyu" # <--- SET YOUR INSTRUCTOR PASSWORD HERE
 
 # --- NEW: Comprehension Questions Data ---
 COMPREHENSION_QUESTIONS = [
@@ -57,7 +58,7 @@ COMPREHENSION_QUESTIONS = [
         "correct_index": 2, # 3 weeks
     },
     {
-        "q": "4. At the end of the week, your holding cost is \$0.50 per unit, and your backlog cost is \$1.00 per unit. If your final inventory is 0 units and you have a remaining Backlog of 15 units, what is your Total Weekly Cost?",
+        "q": "4. At the end of the week, your holding cost is $0.50 per unit, and your backlog cost is $1.00 per unit. If your final inventory is 0 units and you have a remaining Backlog of 15 units, what is your Total Weekly Cost?",
         "options": ["$7.50", "$15.00", "$15.50", "$0.00"],
         "correct_index": 1, # 15.00
     },
@@ -477,7 +478,7 @@ def save_leaderboard_data(data):
         local_path = LOCAL_LOG_DIR / LEADERBOARD_FILE
         with open(local_path, 'w', encoding='utf-8') as f: json.dump(data, f, indent=2, ensure_ascii=False)
         hf_api.upload_file(path_or_fileobj=str(local_path), path_in_repo=LEADERBOARD_FILE, repo_id=HF_REPO_ID, repo_type="dataset", token=HF_TOKEN, commit_message="Update leaderboard")
-        st.sidebar.success("Leaderboard updated!")
+        # st.sidebar.success("Leaderboard updated!") # Removed notification to keep it hidden
         st.cache_data.clear()
     except Exception as e:
         st.sidebar.error(f"Failed to upload leaderboard: {e}")
@@ -531,7 +532,7 @@ def display_rankings(df, top_n=10):
 def show_leaderboard_ui():
     st.markdown("---")
     st.header("📊 The Bullwhip Leaderboard")
-    st.caption("Leaderboard updates after you finish a game. Cached for 60 seconds.")
+    st.caption("This is the dynamic leaderboard. It updates automatically when students finish games (approx 60s cache).")
     leaderboard_data = load_leaderboard_data()
     if not leaderboard_data:
         st.info("No leaderboard data yet. Be the first to finish a game!")
@@ -587,7 +588,7 @@ def save_logs_and_upload(state: dict):
         st.error(f"Error processing or saving log CSV: {e_save}")
         return
     if logs_df is None: return
-    st.subheader("Updating Leaderboard...")
+    # st.subheader("Updating Leaderboard...") # HIDDEN FROM STUDENTS
     try:
         human_role = state['human_role']
                 
@@ -780,7 +781,8 @@ else:
         except Exception as e:
             st.error(f"Error generating final report or saving data: {e}")
             
-        show_leaderboard_ui()
+        # show_leaderboard_ui() # <--- HIDDEN FROM STUDENTS
+        
         if st.button("✨ Start a New Game"):
             # 在重置游戏时清除所有与实验相关的时间戳
             if 'consent_timestamp' in st.session_state: del st.session_state['consent_timestamp']
@@ -1001,4 +1003,25 @@ else:
                     st.rerun()
         # ===========================================================
         
-        show_leaderboard_ui()
+        # show_leaderboard_ui() # <--- HIDDEN FROM STUDENTS
+
+# ==============================================================================
+# --- NEW: Admin / Instructor Zone (Sidebar) ---
+# ==============================================================================
+# This section is always available but hidden in a collapsed sidebar expander.
+# It requires a password to open.
+st.sidebar.markdown("---")
+with st.sidebar.expander("🔐 Instructor Zone"):
+    admin_password_input = st.text_input("Admin Password:", type="password", key="admin_pass_input")
+    
+    if admin_password_input == ADMIN_PASSWORD:
+        st.success("Access Granted")
+        show_admin_leaderboard = st.checkbox("Show Global Leaderboard (Dynamic)", value=False)
+        
+        if show_admin_leaderboard:
+            # When checked, the leaderboard will render at the bottom of whatever page is active
+            st.markdown("---")
+            st.markdown("### 👨‍🏫 Instructor View: Global Leaderboard")
+            show_leaderboard_ui()
+    elif admin_password_input:
+        st.error("Incorrect Password")