from botbuilder.core import TurnContext
from botbuilder.integration.aiohttp import CloudAdapter

from aiohttp.web import Request, Response, json_response

from bot import WebhookBot
from config import DefaultConfig

import sys
import traceback

class BotHandler:
    def __init__(self, adapter: CloudAdapter, bot: WebhookBot, config: DefaultConfig) -> None:
        self.adapter = adapter
        self.bot = bot

    async def messages(self, req: Request) -> Response:
        try:
            # Log incoming request
            print(f"[Handler] Received request at /api/messages")
            print(f"[Handler] Request method: {req.method}")
            print(f"[Handler] Content-Type: {req.headers.get('Content-Type', 'None')}")
            print(f"[Handler] Content-Length: {req.headers.get('Content-Length', 'None')}")
            
            # Process the request - adapter will read the body
            print(f"[Handler] Processing request with adapter...")
            response = await self.adapter.process(req, self.bot)
            if response is not None:
                print(f"[Handler] Adapter returned response: {response.status}")
                return response
            print(f"[Handler] Adapter returned None, sending 204")
            return json_response(status=204)
        except Exception as e:
            print(f"[Handler] Error processing request: {e}")
            import traceback
            traceback.print_exc()
            return json_response(status=500)

    async def on_error(self, context: TurnContext, error: Exception) -> None:
        print(f"\n [on_turn_error] unhandled error: {error}", file=sys.stderr)
        traceback.print_exc()

        await context.send_activity("The bot encountered an error or bug.")
        await context.send_activity(
            "To continue to run this bot, please fix the bot source code."
        )
        return