feat: now bot can read csv files along side with xls and xlsx

bot_telegram.py

@@ -99,7 +99,7 @@ class TelegramBot:
                 "You can :\n"
                 "1. Send me any question as text\n"
                 "2. Send me an Excel file with questions (must have a 'question' column in 'rfp' sheet)\n\n"
-                "Note: Excel files must contain no more than 1000 questions.\n\n"
+                "Note: Excel files must contain no more than 200 questions.\n\n"
                 "type '/status' to check the status of the request"
             )
         else:
@@ -138,7 +138,7 @@ class TelegramBot:
                 "You can:\n"
                 "1. Send me any question as text\n"
                 "2. Send me an Excel file with questions (must have a 'question' column in 'rfp' sheet)\n\n"
-                "Note: Excel files must contain no more than 1000 questions."
+                "Note: Excel files must contain no more than 200 questions."
             )
         else:
             await update.message.reply_text("❌ Wrong password. Try again.")
@@ -218,17 +218,46 @@ class TelegramBot:
 
     async def handle_excel(self, update: Update, context: CallbackContext):
         """Handle Excel files concurrently"""
+        logging.info("=== Starting handle_excel function ===")
+        
+        # Add authentication check
+        user_id = update.message.from_user.id
+        if user_id not in AUTHENTICATED_USERS:
+            logging.info(f"Unauthorized access attempt from user {user_id}")
+            await update.message.reply_text(
+                "❌ You are not authenticated.\n"
+                "Please type /start to authenticate and enter the password first."
+            )
+            return
+
+        logging.info(f"Authenticated user {user_id} uploaded file: {update.message.document.file_name}")
+        logging.info(f"Received file: {update.message.document.file_name}")
+        
         try:
             document = update.message.document
             message_id = update.message.message_id
+            logging.info(f"Processing document with ID: {message_id}")
 
-            # İlk olarak Excel'i oku ve soru sayısını hesapla
+            # First download the file
+            logging.info("Downloading file...")
             file = await context.bot.get_file(document.file_id)
             file_bytes = await file.download_as_bytearray()
+            logging.info("File downloaded successfully")
             
             # Excel'i oku ve soru sayısını hesapla
             try:
-                df = pd.read_excel(io.BytesIO(file_bytes), sheet_name='rfp')
+                logging.info(f"Starting to read file: {document.file_name}")
+                
+                # Check file extension
+                if document.file_name.lower().endswith('.csv'):
+                    df = pd.read_csv(io.BytesIO(file_bytes))
+                    logging.info("Reading as CSV file")
+                else:
+                    df = pd.read_excel(io.BytesIO(file_bytes), sheet_name='rfp')
+                    logging.info("Reading as Excel file")
+                
+                logging.info(f"File read successfully. Columns found: {df.columns.tolist()}")
+                
                 # Add debug logging
                 logging.info(f"Excel columns found: {df.columns.tolist()}")
                 
@@ -260,15 +289,25 @@ class TelegramBot:
             #print("debug 1")
             #print("FILE_RFP_EXCEL_COUNT: ",FILE_RFP_EXCEL_COUNT)
             #print("type: ",type(FILE_RFP_EXCEL_COUNT))
-            if df['question'].count() > FILE_RFP_EXCEL_COUNT:
+            # Add debug logging before the check
+            question_count = df['question'].count()
+            logging.info(f"Number of questions found: {question_count}")
+            logging.info(f"Question limit (FILE_RFP_EXCEL_COUNT): {FILE_RFP_EXCEL_COUNT}")
+
+            if question_count > FILE_RFP_EXCEL_COUNT:
+                logging.info(f"Exceeded question limit: {question_count} > {FILE_RFP_EXCEL_COUNT}")
                 await update.message.reply_text(
                     "❌ Error: Too many questions in Excel file!\n"
-                    f"Your file has {df['question'].count()} questions.\n"
+                    f"Your file has {question_count} questions.\n"
                     f"Maximum allowed is {FILE_RFP_EXCEL_COUNT} questions.\n"
                     "Please reduce the number of questions and try again."
                 )
+                logging.info("Sent error message to user about exceeding question limit")
                 return
 
+            # If we get here, the question count is okay
+            logging.info("Question count is within limits, proceeding with processing")
+
             num_questions = len(df['question'])
             
             # Tahmini süreyi hesapla
@@ -437,11 +476,16 @@ class TelegramBot:
 
     def setup_handlers(self):
         """Set up Telegram command and message handlers."""
+        logging.info("Setting up message handlers...")
         self.app.add_handler(CommandHandler("start", self.start_command))
         self.app.add_handler(CommandHandler("status", self.status_command))
         self.app.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, self.handle_message))
+        
+        # Update Excel handler to include CSV files
         self.app.add_handler(MessageHandler(
-            filters.Document.FileExtension("xlsx") | filters.Document.FileExtension("xls"),
+            filters.Document.FileExtension("xlsx") | 
+            filters.Document.FileExtension("xls") |
+            filters.Document.FileExtension("csv"),  # Add CSV support
             self.handle_excel
         ))