import asyncio
import json
from livekit import api
from livekit.protocol.sip import CreateSIPParticipantRequest
from typing import List
from src.config import settings

def normalize_phone_number(phone_num: str) -> str:
    """
    Ensure phone number is in proper E.164 format with + prefix
    This is crucial for Twilio SIP termination
    """
    # Remove any existing + prefix
    clean_num = phone_num.lstrip('+')
    
    # Add + prefix for E.164 format
    return f"+{clean_num}"

async def make_call(num: str, roomname: str, prompt: str):
    """
    Create SIP participant with properly formatted phone number
    """
    livekit_api = api.LiveKitAPI(
        url=settings.LIVEKIT_URL, 
        api_key=settings.LIVEKIT_API_KEY, 
        api_secret=settings.LIVEKIT_API_SECRET
    )
    
    identity = "user-id"
    participant_metadata = json.dumps({
        "prompt": prompt,
    })
    
    # Normalize the phone number to E.164 format
    normalized_number = normalize_phone_number(num)
    print(f"Calling normalized number: {normalized_number}")
    
    request = CreateSIPParticipantRequest(
        sip_trunk_id=settings.SIP_TRUNK,
        sip_call_to=normalized_number,  # Use normalized E.164 format
        room_name=roomname,
        participant_identity=identity,
        participant_name="new Caller",
        participant_metadata=participant_metadata,
        krisp_enabled=True,
    )
    
    try:
        participant = await livekit_api.sip.create_sip_participant(request)
        print(f"Successfully created participant for {normalized_number}: {participant}")
        return participant
    except Exception as e:
        print(f"Error creating SIP participant for {normalized_number}: {str(e)}")
        # Log the exact request for debugging
        print(f"Request details: trunk_id={settings.SIP_TRUNK}, call_to={normalized_number}")
        raise
    finally:
        await livekit_api.aclose()

async def process_call_list(call_list: List[dict]):
    """
    Process list of calls with proper error handling and logging
    """
    room_name_base = "room-testing"
    
    for i, payload in enumerate(call_list):
        num = payload.get('number')
        prompt = payload.get('prompt')
        
        if not num or not isinstance(prompt, str):
            print(f"Invalid payload at index {i}: {payload}")
            continue
        
        try:
            # Create unique room name
            room_name = f"{room_name_base}_{num.replace('+', '').replace(' ', '')}"
            
            print(f"Processing call {i+1}/{len(call_list)} to {num}")
            await make_call(num, room_name, prompt)
            
            # Add delay between calls to avoid rate limiting
            if i < len(call_list) - 1:  # Don't wait after the last call
                await asyncio.sleep(2)
                
        except Exception as e:
            print(f"Error making call to {num}: {str(e)}")
            # Continue with next call instead of stopping

# Additional debugging function
async def test_single_call(phone_number: str, test_prompt: str = "Hello, this is a test call"):
    """
    Test function to make a single call with detailed logging
    """
    print(f"Testing call to: {phone_number}")
    print(f"Original number: {phone_number}")
    normalized = normalize_phone_number(phone_number)
    print(f"Normalized number: {normalized}")
    
    room_name = f"test-room-{normalized.replace('+', '').replace(' ', '')}"
    
    try:
        result = await make_call(normalized, room_name, test_prompt)
        print(f"Test call successful: {result}")
        return result
    except Exception as e:
        print(f"Test call failed: {str(e)}")
        return None

# Example usage for testing
async def main():
    # Test with your Airtel number
    airtel_number = "919994893896"  # Your Airtel number
    jio_number = "919876543210"     # Replace with your working Jio number
    
    print("Testing Airtel number:")
    await test_single_call(airtel_number, "Hello, this is a test call to Airtel")
    
    await asyncio.sleep(5)
    
    print("\nTesting Jio number for comparison:")
    await test_single_call(jio_number, "Hello, this is a test call to Jio")

if __name__ == "__main__":
    asyncio.run(main())