import os
import logging
from dotenv import load_dotenv

import asyncio
import httpx

from nio import AsyncClient, AsyncClientConfig, MatrixRoom, RoomMessageText, InviteMemberEvent
from nio.responses import LoginResponse


# --- Load environment variables ---
load_dotenv()
MATRIX_HOMESERVER_URL = os.getenv("MATRIX_HOMESERVER_URL")
MATRIX_USER_ID = os.getenv("MATRIX_USER_ID")
MATRIX_PASSWORD = os.getenv("MATRIX_PASSWORD")
MATRIX_LOGIN_TRIES = int(os.getenv("MATRIX_LOGIN_TRIES", 5))
MATRIX_LOGIN_DELAY_INCREMENT = int(os.getenv("MATRIX_LOGIN_DELAY_INCREMENT", 5))
LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO").upper()
AI_URL = os.getenv("AI_URL")
AI_TOKEN = os.getenv("AI_TOKEN")



# --- Logging Setup ---
numeric_level = getattr(logging, LOG_LEVEL, logging.INFO)
logging.basicConfig(
    level=numeric_level,
    format="%(asctime)s %(levelname)s %(name)s: %(message)s"
)
logger = logging.getLogger(__name__)


async def main() -> None:

    async def trust_all_devices(client) -> None:
        """
        Programmatically verify all devices to allow sharing encryption keys.
        """
        for room_id in client.rooms:
            try:
                devices = await client.room_devices(room_id)
                if isinstance(devices, dict):
                    for user, dev_ids in devices.items():
                        if user == USER_ID:
                            continue
                        for dev_id in dev_ids:
                            device = client.crypto.device_store.get_device(user, dev_id)
                            if device and not client.crypto.device_store.is_device_verified(device):
                                logger.info(f"Trusting {dev_id} for {user}")
                                client.verify_device(device)
            except Exception:
                logger.exception(f"Error trusting devices in {room_id}")

    async def on_invite(room, event):
        """
        Handle an invite event by joining the room and trusting all devices.
        """
        if isinstance(event, InviteMemberEvent):
            await client.join(room.room_id)
            logger.info("Joined %s", room.room_id)
            await trust_all_devices(client)

    async def on_message(room: MatrixRoom, event: RoomMessageText) -> None:
        """
        Handle incoming messages.
        """

        # Check if the message is from the bot itself
        if event.sender == client.user_id:            
            return
        
        logger.info("Received '%s' from %s in %s", event.body.strip(), event.sender, room.display_name)

        
        if isinstance(event, RoomMessageText):
            logger.info(f"Received message in {room.room_id}: {event.body}")
            payload = {
                "roomId":    event["room_id"],
                "userId":    event["sender"],
                "content":   event["content"]["body"],
                "eventId":   event["event_id"],
                "timestamp": event["origin_server_ts"]
            }
            headers = {"Authorization": f"Bearer {AI_TOKEN}"}
            async with httpx.AsyncClient() as http:
                resp = await http.post(f"{AI_URL}/api/v1/message", json=payload, headers=headers)
                resp.raise_for_status()
                data = resp.json()
            if data.get("reply"):
                client.send_message(event["room_id"], data["reply"])

    # --- Initialize the client ---
    # Create the data directory if it doesn't exist
    try:
        os.makedirs("/app/data", exist_ok=True)
    except Exception as e:
        logger.error(f"Error creating data directory: {e}")
        return
    
    # Initialize the client
    config = AsyncClientConfig(store_sync_tokens=True, encryption_enabled=True)
    client = AsyncClient(MATRIX_HOMESERVER_URL, MATRIX_USER_ID, store_path="/app/data", config=config)    
  
    for i in range(MATRIX_LOGIN_TRIES):
        try:
            login_response=await client.login(password=MATRIX_PASSWORD)
            break
        except Exception as e:
            logger.error("Login failed: %s", login_response)
            logger.error(f"Login attempt {i+1} failed: {e}")
            if i == MATRIX_LOGIN_TRIES - 1:
                return
            await asyncio.sleep(MATRIX_LOGIN_DELAY_INCREMENT * (i + 1))
    logger.info("Logged in successfully")   
    
    await trust_all_devices(client)

    client.add_event_callback(on_invite, InviteMemberEvent)
    client.add_event_callback(on_message, RoomMessageText)

    logger.info("Starting sync loop")
    await client.sync_forever(timeout=30000) # timeout should be moved to Variable



if __name__ == "__main__":
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        logger.info("Shutting down")
        asyncio.run(client.close())