Update app.py

app.py

@@ -187,6 +187,9 @@ def generate_daily_report():
     try:
         logs_df = pd.read_csv(LOG_FILE)
         daily_logs = logs_df[pd.to_datetime(logs_df['timestamp']).dt.strftime('%Y-%m-%d') == today_str]
+        if daily_logs.empty:
+            return "No attendance data available for today.", None
+
         total_workers = len(daily_logs['worker_id'].unique())
         verified_workers = len(daily_logs[daily_logs['verification_status'] == 'Verified']['worker_id'].unique())
         unverified_workers = len(daily_logs[daily_logs['verification_status'] == 'Pending']['worker_id'].unique())
@@ -230,7 +233,7 @@ Worker ID | Name | In-Time | Verification Status
         report_filename = f"daily_report_{today_str}_{uuid.uuid4().hex[:12]}.txt"
         report_filepath = os.path.join(REPORT_DIR, report_filename)
         try:
-            with open(report_filepath, "w") as f:
+            with open(report_filepath, "w", encoding='utf-8') as f:
                 f.write(report)
             logger.info(f"Report saved to {report_filepath}")
             return report, report_filepath  # Return file path for Gradio download
@@ -420,11 +423,14 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
                 if os.path.exists(LOG_FILE):
                     try:
                         df = pd.read_csv(LOG_FILE)
-                        df = df.astype(str).sort_values(by="timestamp", ascending=False)
-                        return df
+                        if not df.empty:
+                            df['timestamp'] = pd.to_datetime(df['timestamp'], errors='coerce')
+                            df = df.sort_values(by="timestamp", ascending=False).fillna('')
+                            return df[["worker_id", "first_name", "last_name", "timestamp", "camera_id", "verification_status"]]
+                        return pd.DataFrame(columns=["worker_id", "first_name", "last_name", "timestamp", "camera_id", "verification_status"])
                     except pd.errors.EmptyDataError:
-                        return pd.DataFrame()
-                return pd.DataFrame()
+                        return pd.DataFrame(columns=["worker_id", "first_name", "last_name", "timestamp", "camera_id", "verification_status"])
+                return pd.DataFrame(columns=["worker_id", "first_name", "last_name", "timestamp", "camera_id", "verification_status"])
             
             refresh_button = gr.Button("Refresh Log")
             refresh_button.click(update_log_display, None, log_display)