feat: add language selection (ru and en)

src/bot/telegram_userbot.py

@@ -80,24 +80,46 @@ class TelegramUserBot:
             response: str = self.gigachat_client.get_response(str(message.chat.id), command_arg)
             self.logger.debug(f"Received response for chat_id={message.chat.id}")
 
-            # Stop typing animation
-            await client.send_chat_action(message.chat.id, ChatAction.CANCEL)
-
             # Edit the processing message with the generated response
             await processing_message.edit_text(response)
         except Exception as e:
-            # Log the exception details
             self.logger.error(f"Error processing /ai command for chat_id={message.chat.id}: {e}", exc_info=True)
-
+            await processing_message.edit_text("An error occurred while processing your request.")
-            # Stop typing animation in case of an error
+        finally:
+            # Stop indicating typing action
             await client.send_chat_action(message.chat.id, ChatAction.CANCEL)
 
-            # Handle any errors and notify the user
+    def get_language(self, input_text: str) -> str:
-            await processing_message.edit_text("An error occurred while processing your request.")
+        """
+        Determines the language for voice-to-text conversion based on the input parameter.
+
+        Args:
+            input_text (str): The input parameter indicating the language.
+
+        Returns:
+            str: The language code ('en' or 'ru').
+
+        Raises:
+            ValueError: If an invalid language parameter is provided.
+        """
+        language_params: dict[str, list[str]] = {
+            'en': ['en', 'eng', 'english'],
+            'ru': ['ru', 'rus', 'russian']
+        }
+        
+        input_lower: str = input_text.lower()
+        for lang_code, aliases in language_params.items():
+            if input_lower in aliases:
+                return lang_code
+        raise ValueError(
+            "Invalid language parameter. Please use one of the following:\n" +
+            "\n".join(f"{lang_code}: {', '.join(aliases)}" for lang_code, aliases in language_params.items())
+        )
+
 
     async def handle_voice_command(self, client: Client, message: Message) -> None:
         """
-        Handle the /voice command to convert a voice message to text.
+        Handle the /voice command to convert a voice message to text with optional language selection.
 
         Args:
             client (Client): The Pyrogram Client instance.
@@ -105,6 +127,14 @@ class TelegramUserBot:
         """
         self.logger.info(f"Received /voice command from chat_id={message.chat.id}.")
 
+        # Parse the language parameter (default to Russian)
+        command_parts: list[str] = message.text.split()
+        try:
+            language: str = self.get_language(command_parts[1]) if len(command_parts) > 1 else 'ru'
+        except ValueError as e:
+            await message.reply(str(e), quote=True)
+            return
+
         # Check if the reply is to a voice message
         if not (message.reply_to_message and message.reply_to_message.voice):
             self.logger.warning("The /voice command was not used in reply to a voice message.")
@@ -119,14 +149,16 @@ class TelegramUserBot:
             self.logger.info(f"Voice message downloaded to {file_path}.")
 
             try:
-                # Attempt to convert voice to text
+                # Start typing animation
-                text: str = speech_recognition.convert_voice_to_text(file_path)  # type: ignore
+                await client.send_chat_action(message.chat.id, ChatAction.TYPING)
+            
+                # Attempt to convert voice to text with the selected language
+                text: str = speech_recognition.convert_voice_to_text(file_path, language=language)  # type: ignore
                 self.logger.info("Voice message successfully converted to text.")
 
                 # Format the text for sending
                 formatted_text: str = (
-                    "<b>Conversion Result:</b>"
+                    f"<pre language=\"Conversion Result ({language})\">"
-                    "<pre>"
                     f"{text}"
                     "</pre>"
                 )
@@ -142,6 +174,9 @@ class TelegramUserBot:
             except Exception:
                 self.logger.error("An unexpected error occurred.", exc_info=True)
                 await processing_message.edit_text("An error occurred while processing the voice message. Please try again later.")
+            finally:
+                # Stop indicating typing action
+                await client.send_chat_action(message.chat.id, ChatAction.CANCEL)
 
     def run(self) -> None:
         """