import json
import os
import importlib
import inspect
import logging
from telegram import Update
from telegram.ext import Application, CommandHandler, MessageHandler, filters, ContextTypes
from dotenv import load_dotenv
from tools.base_tool import BaseTool
from ai_providers import create_ai_provider, AnthropicProvider, OpenAIProvider

# Load environment variables
load_dotenv()

# Set up logging to console and file
logging.basicConfig(level=logging.WARNING, handlers=[
    logging.StreamHandler(),
    logging.FileHandler('logs/output.log', mode='a')
])

# Set up Telegram bot
TELEGRAM_BOT_TOKEN = os.getenv('TELEGRAM_BOT_TOKEN')

# Load system prompt
with open("prompts/developer_prompt.txt", "r") as file:
    system_prompt = file.read().strip()

# Dictionary to store conversation history for each user
conversation_history = {}

# Load tools
tools = []
tools_dir = os.path.join(os.path.dirname(__file__), 'tools')
for filename in os.listdir(tools_dir):
    if filename.endswith('.py') and filename != '__init__.py' and filename != 'base_tool.py':
        module_name = f'tools.{filename[:-3]}'
        module = importlib.import_module(module_name)
        for name, obj in inspect.getmembers(module):
            if inspect.isclass(obj) and issubclass(obj, BaseTool) and obj != BaseTool:
                tools.append(obj())

# Collect all function definitions
functions = []
for tool in tools:
    functions.extend(tool.get_functions())

# Initialize AI provider
ai_provider = create_ai_provider("anthropic")

async def start(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    logging.info("Bot started")
    await update.message.reply_text("Hello! I'm your AI assistant. How can I help you today? You can send me images and then ask questions about them.")

async def clear(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    user_id = update.effective_user.id
    if user_id in conversation_history:
        del conversation_history[user_id]
    for tool in tools:
        tool.clear()

    logging.info(f"Cleared conversation history and image for user {user_id}")
    await update.message.reply_text("Conversation history and image cleared. Let's start fresh!")

async def handle_message(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    try:
        user_id = update.effective_user.id
        user_message = update.message.text

        logging.info(f"Message from user {user_id}: {user_message}")

        if user_id not in conversation_history:
            conversation_history[user_id] = []

        conversation_history[user_id].append({"role": "user", "content": user_message})

        messages = conversation_history[user_id]

        response = ai_provider.get_chat_response([{"role": "system", "content": system_prompt}] + messages)
        tool_calls = ai_provider.format_tool_calls(response)

        toolUseCount = 0

        while len(tool_calls) > 0 and toolUseCount < 50:
            tool_call = tool_calls.pop(0)
            function_name = tool_call.name
            
            tool_response = call_tool(tool_call)

            formatted_result = ai_provider.format_tool_result(tool_call, tool_response)
            messages.append(formatted_result)

            response = ai_provider.get_chat_response([{"role": "system", "content": system_prompt}] + messages)
            tool_calls = ai_provider.format_tool_calls(response)

            toolUseCount += 1

        if toolUseCount == 0:
            assistant_reply = ai_provider.format_assistant_reply(response)
            conversation_history[user_id].append({"role": "assistant", "content": assistant_reply})
        
        if len(conversation_history[user_id]) > 20:
            conversation_history[user_id] = conversation_history[user_id][-20:]

        await update.message.reply_text(ai_provider.get_reply_text(response))

    except Exception as e:
        logging.error(f"An error occurred: {str(e)}")
        await update.message.reply_text("Sorry, an error occurred while processing your request.")

def call_tool(function_call):
    function_name = function_call.name
    function_args = json.loads(function_call.arguments if hasattr(function_call, 'arguments') else json.dumps(function_call.input))
    for tool in tools:
        if function_name in [f["name"] for f in tool.get_functions()]:
            return tool.execute(function_name, **function_args)

async def switch(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    global ai_provider
    model = ai_provider.switch_model()
    logging.info(f"Switched to model: {model}")
    await update.message.reply_text(f"Switched to model: {model}")

async def switch_providers(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    await clear(update, context)
    global ai_provider
    new_provider_name = "openai" if isinstance(ai_provider, AnthropicProvider) else "anthropic"
    ai_provider = create_ai_provider(new_provider_name)
    logging.info(f"Switched to {new_provider_name} provider")
    await update.message.reply_text(f"Switched to {new_provider_name} provider")

async def status(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    await update.message.reply_text(f"Currently using {ai_provider.__class__.__name__}: {ai_provider.get_model()}")

def main() -> None:
    # Create the Application and pass it your bot's token
    application = Application.builder().token(TELEGRAM_BOT_TOKEN).build()

    # Add handlers
    application.add_handler(CommandHandler("start", start))
    application.add_handler(CommandHandler("clear", clear))
    application.add_handler(CommandHandler("switch", switch))
    application.add_handler(CommandHandler("toggle", switch_providers))
    application.add_handler(CommandHandler("status", status))
    application.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, handle_message))

    # Start the Bot
    logging.info("Bot is running...")
    application.run_polling()

if __name__ == '__main__':
    main()