Update app.py

app.py

@@ -71,11 +71,11 @@ else:
 def get_customer_demand(week: int) -> int:
     return 4 if week <= 4 else 8
 
-# =============== MODIFIED Initialization (v4.21 logic + v4.23 bugfix) ===============
+# =============== MODIFIED Initialization (记录开始时间) ===============
 def init_game_state(llm_personality: str, info_sharing: str, participant_id: str):
     roles = ["Retailer", "Wholesaler", "Distributor", "Factory"]
     human_role = "Distributor" # Role is fixed
-        
+            
     st.session_state.game_state = {
         'game_running': True,
         'participant_id': participant_id,
@@ -86,7 +86,8 @@ def init_game_state(llm_personality: str, info_sharing: str, participant_id: str
         'decision_step': 'initial_order',
         'human_initial_order': None,
         'current_ai_suggestion': None, # v4.23 Bugfix: 用于存储AI建议
-        'last_week_orders': {name: 0 for name in roles} # v4.21 Logic: 初始化为0
+        'last_week_orders': {name: 0 for name in roles}, # v4.21 Logic: 初始化为0
+        'start_timestamp': datetime.utcnow().isoformat() + "Z", # [修改点 3]: 记录实验开始时间
     }
     for i, name in enumerate(roles):
         upstream = roles[i + 1] if i + 1 < len(roles) else None
@@ -240,7 +241,7 @@ def get_llm_prompt(echelon_state_decision_point: dict, week: int, llm_personalit
             A 'rational' player would account for their {supply_line_desc} (which is {supply_line} units), but you're too busy panicking to trust that.
             **Your 'Panic' Calculation (Ignoring the Supply Line):**
             1.  **Anchor on Demand:** You just got an order for **{anchor_demand}** units. You'll order *at least* that.
-            2.  **Correct for Stock:** Your desired 'safe' inventory is {DESIRED_INVENTORY}. Your current net inventory is {net_inventory}. You need to order **{stock_correction}** more units to feel safe again.
+            2.  **Correct for Stock:** Your desired 'safe' inventory is {DESIRED_INVENTORY}. Your current net inventory is {net_inventory}. You need to order an extra **{stock_correction}** more units to feel safe again.
             3.  **Ignore Supply Line:** You'll ignore the **{supply_line} units** already in your pipeline.
             **Final Panic Order:** (Your Incoming Order) + (Your Stock Correction)
             * Order = {panicky_order_calc} = **{panicky_order} units**.
@@ -274,7 +275,7 @@ def get_llm_prompt(echelon_state_decision_point: dict, week: int, llm_personalit
             **Your 'Panic' Calculation (Ignoring Supply Line, Averaging Anchors):**
             1.  **Anchor on Conflict:** (Your Incoming Order + End-Customer Demand) / 2
                 * Anchor = ({local_anchor} + {global_anchor}) / 2 = **{anchor_demand}** units.
-            2.  **Correct for *Your* Stock:** Your desired 'safe' inventory is {DESIRED_INVENTORY}. Your current net inventory is {net_inventory}. You need to order **{stock_correction}** more units.
+            2.  **Correct for *Your* Stock:** Your desired 'safe' inventory is {DESIRED_INVENTORY}. Your current net inventory is {net_inventory}. You need to order an extra **{stock_correction}** more units.
             3.  **Ignore *Your* Supply Line:** You'll ignore the **{supply_line} units** in your own pipeline ({supply_line_desc}).
             **Final Panic Order:** (Conflicted Anchor) + (Your Stock Correction)
             * Order = {panicky_order_calc} = **{panicky_order} units**.
@@ -540,6 +541,13 @@ def save_logs_and_upload(state: dict):
         logs_df = pd.json_normalize(state['logs'])
         safe_participant_id = re.sub(r'[^a-zA-Z0-9_-]', '_', participant_id)
         fname = LOCAL_LOG_DIR / f"log_{safe_participant_id}_{int(time.time())}.csv"
+        # [修改点 4]: 在 logs_df 中添加实验结束时间戳和同意时间戳
+        logs_df['experiment_end_timestamp'] = datetime.utcnow().isoformat() + "Z"
+        if st.session_state.get('consent_timestamp'):
+            logs_df['consent_given_timestamp'] = st.session_state['consent_timestamp']
+        else:
+             logs_df['consent_given_timestamp'] = "N/A"
+        
         for col in logs_df.select_dtypes(include=['object']).columns: logs_df[col] = logs_df[col].astype(str)
         logs_df.to_csv(fname, index=False)
         st.success(f"Log successfully saved locally: `{fname}`")
@@ -580,7 +588,13 @@ def save_logs_and_upload(state: dict):
             'total_chain_cost': float(total_chain_cost), # 新增: 总成本
             'order_std_dev': float(order_std_dev) if pd.notna(order_std_dev) else 0.0
         }
-                
+        
+        # [修改点 3]: 将实验开始时间戳添加到 Leaderboard entry 中 (仅用于追溯，不参与排名)
+        if state.get('start_timestamp'):
+             new_entry['start_timestamp'] = state['start_timestamp']
+        if st.session_state.get('consent_timestamp'):
+             new_entry['consent_timestamp'] = st.session_state['consent_timestamp']
+        
         leaderboard_data = load_leaderboard_data()
         leaderboard_data[participant_id] = new_entry 
         save_leaderboard_data(leaderboard_data)
@@ -596,13 +610,17 @@ st.title("🍺 The Beer Game: A Human-AI Collaboration Challenge")
 # --- NEW: Check for Consent ---
 if 'consent_given' not in st.session_state:
     st.session_state['consent_given'] = False
+# --- NEW: Storage for Consent Timestamp ---
+if 'consent_timestamp' not in st.session_state:
+    st.session_state['consent_timestamp'] = None
 
 # --- Initialization Check ---
 if st.session_state.get('initialization_error'):
     st.error(st.session_state.initialization_error)
+    
 # --- Consent Form Display Logic ---
 elif not st.session_state['consent_given']:
-    st.header("📝 Participant Consent Form")
+    st.header("📝 Participant Consent Form (参与者知情同意书)")
     st.markdown("""
     **Project Title:** Behavioural Contagion or Rational Alignment? Human Performance in LLM Supply Chains 
 
@@ -626,20 +644,29 @@ elif not st.session_state['consent_given']:
     
     st.markdown("---")
     
-    consent_choice = st.radio(
-        "**Do you agree to take part in this study?**",
-        ('Yes, I agree to participate in this study.', 'No, I do not agree to participate in this study.'),
-        index=None
-    )
-    
-    if st.button("Continue"):
-        if consent_choice == 'Yes, I agree to participate in this study.':
-            st.session_state['consent_given'] = True
-            st.rerun()
-        elif consent_choice == 'No, I do not agree to participate in this study.':
-            st.error("Thank you for your time. Since you declined participation, the experiment will not proceed.")
-        else:
-            st.warning("Please select an option to continue.")
+    # 使用 st.form 确保按钮点击后不会清空 st.radio 的值
+    with st.form("consent_form"):
+        consent_choice = st.radio(
+            "**Do you agree to take part in this study?**",
+            ('Yes, I agree to participate in this study.', 'No, I do not agree to participate in this study.'),
+            index=None,
+            key='consent_radio'
+        )
+        submit_button = st.form_submit_button("Continue / 提交")
+
+        if submit_button:
+            if consent_choice == 'Yes, I agree to participate in this study.':
+                # [修正点 2]: 记录时间戳并允许进入
+                st.session_state['consent_given'] = True
+                st.session_state['consent_timestamp'] = datetime.utcnow().isoformat() + "Z"
+                st.rerun()
+            elif consent_choice == 'No, I do not agree to participate in this study.':
+                # [修正点 1]: 选择 No 后显示感谢信息并停止流程
+                st.error("Thank you for your time. Since you declined participation, the experiment will not proceed. You may now close this page.")
+                st.session_state['consent_given'] = False # 保持为 False，防止意外进入
+            else:
+                st.warning("Please select an option to continue.")
+
 
 # --- Game Setup / Main Interface Logic ---
 else:
@@ -703,7 +730,13 @@ else:
         state = st.session_state.game_state
         week, human_role, echelons, info_sharing = state['week'], state['human_role'], state['echelons'], state['info_sharing']
         echelon_order = ["Retailer", "Wholesaler", "Distributor", "Factory"] # Define here for UI
+        
+        # [修改点 1.1]: 移除 st.columns，恢复主内容到左侧，侧边栏不变
+        # col_main, col_sidebar_image = st.columns([4, 1]) 移除
+        
+        # with col_main: 移除
         st.header(f"Week {week} / {WEEKS}")
+        # [修改点 2.3]: 移除 subheader 中 AI Mode 和 Information 的提示
         st.subheader(f"Your Role: **{human_role}** ({state['participant_id']})") 
         st.markdown("---")
         st.subheader("Supply Chain Status (Start of Week State)") 
@@ -880,5 +913,8 @@ else:
             st.error(f"Error generating final report: {e}")
         show_leaderboard_ui()
         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']
+            if 'consent_given' in st.session_state: del st.session_state['consent_given']
             del st.session_state.game_state
             st.rerun()