import os
import discord
from discord.ext import commands
import openai
from openai import OpenAI

from collections import deque
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

# Get environment variables
DISCORD_TOKEN = os.getenv('DISCORD_TOKEN')
OPENAI_API_KEY = os.getenv('OPENAI_API_KEY')
OPENWEBUI_API_BASE = os.getenv('OPENWEBUI_API_BASE')
MODEL_NAME = os.getenv('MODEL_NAME')

# Configure OpenAI client to point to OpenWebUI
client = OpenAI(
    api_key=os.getenv('OPENAI_API_KEY'),
    base_url=os.getenv('OPENWEBUI_API_BASE')  # e.g., "http://localhost:8080/v1"
)

# Configure OpenAI
# TODO: The 'openai.api_base' option isn't read in the client API. You will need to pass it when you instantiate the client, e.g. 'OpenAI(base_url=OPENWEBUI_API_BASE)'
# openai.api_base = OPENWEBUI_API_BASE

# Initialize Discord bot
intents = discord.Intents.default()
intents.message_content = True
intents.messages = True
bot = commands.Bot(command_prefix='!', intents=intents)

# Message history cache
channel_history = {}

async def get_chat_history(channel, limit=100):
    messages = []
    async for message in channel.history(limit=limit):
        messages.append(f"{message.author.name}: {message.content}")
    return "\n".join(reversed(messages))

async def get_ai_response(context, user_message):
    formatted_prompt = f"##CONTEXT##\n{context}\n##ENDCONTEXT##\n\n{user_message}"

    try:
        response = client.chat.completions.create(model=MODEL_NAME,
        messages=[
            {"role": "user", "content": formatted_prompt}
        ])
        return response.choices[0].message.content
    except Exception as e:
        return f"Error: {str(e)}"

@bot.event
async def on_ready():
    print(f'{bot.user} has connected to Discord!')

@bot.event
async def on_message(message):
    # Ignore messages from the bot itself
    if message.author == bot.user:
        return

    should_respond = False

    # Check if bot was mentioned
    if bot.user in message.mentions:
        should_respond = True

    # Check if message is a DM
    if isinstance(message.channel, discord.DMChannel):
        should_respond = True

    if should_respond:
        async with message.channel.typing():
            # Get chat history
            history = await get_chat_history(message.channel)

            # Remove bot mention from the message
            user_message = message.content.replace(f'<@{bot.user.id}>', '').strip()

            # Get AI response
            response = await get_ai_response(history, user_message)

            # Send response
            await message.reply(response)

    await bot.process_commands(message)

def main():
    if not all([DISCORD_TOKEN, OPENAI_API_KEY, OPENWEBUI_API_BASE, MODEL_NAME]):
        print("Error: Missing required environment variables")
        return

    bot.run(DISCORD_TOKEN)

if __name__ == "__main__":
    main()