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| import json | |
| import requests | |
| from urllib.parse import quote | |
| import discord | |
| from typing import List | |
| from qa_engine import logger, QAEngine | |
| from discord_bot.client.utils import split_text_into_chunks | |
| class DiscordClient(discord.Client): | |
| """ | |
| Discord Client class, used for interacting with a Discord server. | |
| Args: | |
| qa_service_url (str): The URL of the question answering service. | |
| num_last_messages (int, optional): The number of previous messages to use as context for generating answers. | |
| Defaults to 5. | |
| use_names_in_context (bool, optional): Whether to include user names in the message context. Defaults to True. | |
| enable_commands (bool, optional): Whether to enable commands for the bot. Defaults to True. | |
| Attributes: | |
| qa_service_url (str): The URL of the question answering service. | |
| num_last_messages (int): The number of previous messages to use as context for generating answers. | |
| use_names_in_context (bool): Whether to include user names in the message context. | |
| enable_commands (bool): Whether to enable commands for the bot. | |
| max_message_len (int): The maximum length of a message. | |
| system_prompt (str): The system prompt to be used. | |
| """ | |
| def __init__( | |
| self, | |
| qa_engine: QAEngine, | |
| num_last_messages: int = 5, | |
| use_names_in_context: bool = True, | |
| enable_commands: bool = True, | |
| debug: bool = False | |
| ): | |
| logger.info('Initializing Discord client...') | |
| intents = discord.Intents.all() | |
| intents.message_content = True | |
| super().__init__(intents=intents, command_prefix='!') | |
| assert num_last_messages >= 1, \ | |
| 'The number of last messages in context should be at least 1' | |
| self.qa_engine: QAEngine = qa_engine | |
| self.num_last_messages: int = num_last_messages | |
| self.use_names_in_context: bool = use_names_in_context | |
| self.enable_commands: bool = enable_commands | |
| self.debug: bool = debug | |
| self.min_messgae_len: int = 1800 | |
| self.max_message_len: int = 2000 | |
| async def on_ready(self): | |
| """ | |
| Callback function to be called when the client is ready. | |
| """ | |
| logger.info('Successfully logged in as: {0.user}'.format(self)) | |
| await self.change_presence(activity=discord.Game(name='Chatting...')) | |
| async def get_last_messages(self, message) -> List[str]: | |
| """ | |
| Method to fetch recent messages from a message's channel. | |
| Args: | |
| message (Message): The discord Message object used to identify the channel. | |
| Returns: | |
| List[str]: Reversed list of recent messages from the channel, | |
| excluding the input message. Messages may be prefixed with the author's name | |
| if `self.use_names_in_context` is True. | |
| """ | |
| last_messages: List[str] = [] | |
| async for msg in message.channel.history( | |
| limit=self.num_last_messages): | |
| if self.use_names_in_context: | |
| last_messages.append(f'{msg.author}: {msg.content}') | |
| else: | |
| last_messages.append(msg.content) | |
| last_messages.reverse() | |
| last_messages.pop() # remove last message from context | |
| return last_messages | |
| async def send_message(self, message, answer: str, sources: str): | |
| chunks = split_text_into_chunks( | |
| text=answer, | |
| split_characters=['. ', ', ', '\n'], | |
| min_size=self.min_messgae_len, | |
| max_size=self.max_message_len | |
| ) | |
| for chunk in chunks: | |
| await message.channel.send(chunk) | |
| await message.channel.send(sources) | |
| async def on_message(self, message): | |
| """ | |
| Callback function to be called when a message is received. | |
| Args: | |
| message (discord.Message): The received message. | |
| """ | |
| if message.author == self.user: | |
| return | |
| if self.enable_commands and message.content.startswith('!'): | |
| if message.content == '!clear': | |
| await message.channel.purge() | |
| return | |
| last_messages = await self.get_last_messages(message) | |
| context = '\n'.join(last_messages) | |
| logger.info('Received message: {0.content}'.format(message)) | |
| response = self.qa_engine.get_response( | |
| question=message.content, | |
| messages_context=context | |
| ) | |
| logger.info('Sending response: {0}'.format(response)) | |
| try: | |
| await self.send_message( | |
| message, | |
| response.get_answer(), | |
| response.get_sources_as_text() | |
| ) | |
| except Exception as e: | |
| logger.error('Failed to send response: {0}'.format(e)) | |