import argparse
import asyncio
import os
import sys

from dotenv import load_dotenv
from loguru import logger
from twilio.rest import Client

from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.runner import PipelineRunner
from pipecat.pipeline.task import PipelineParams, PipelineTask
from pipecat.processors.aggregators.openai_llm_context import OpenAILLMContext
from pipecat.services.elevenlabs import ElevenLabsTTSService
from pipecat.services.openai import OpenAILLMService
from pipecat.transports.services.daily import DailyParams, DailyTransport

load_dotenv(override=True)

logger.remove(0)
logger.add(sys.stderr, level="DEBUG")


twilio_account_sid = os.getenv("TWILIO_ACCOUNT_SID")
twilio_auth_token = os.getenv("TWILIO_AUTH_TOKEN")
twilioclient = Client(twilio_account_sid, twilio_auth_token)

daily_api_key = os.getenv("DAILY_API_KEY", "")


async def main(room_url: str, token: str, callId: str, sipUri: str):
    # dialin_settings are only needed if Daily's SIP URI is used
    # If you are handling this via Twilio, Telnyx, set this to None
    # and handle call-forwarding when on_dialin_ready fires.
    transport = DailyTransport(
        room_url,
        token,
        "Chatbot",
        DailyParams(
            api_key=daily_api_key,
            dialin_settings=None,  # Not required for Twilio
            audio_in_enabled=True,
            audio_out_enabled=True,
            camera_out_enabled=False,
            vad_enabled=True,
            vad_analyzer=SileroVADAnalyzer(),
            transcription_enabled=True,
        ),
    )

    tts = ElevenLabsTTSService(
        api_key=os.getenv("ELEVENLABS_API_KEY", ""),
        voice_id=os.getenv("ELEVENLABS_VOICE_ID", ""),
    )

    llm = OpenAILLMService(api_key=os.getenv("OPENAI_API_KEY"), model="gpt-4o")

    messages = [
        {
            "role": "system",
            "content": "You are Chatbot, a friendly, helpful robot. Your goal is to demonstrate your capabilities in a succinct way. Your output will be converted to audio so don't include special characters in your answers. Respond to what the user said in a creative and helpful way, but keep your responses brief. Start by saying 'Hello! Who dares dial me at this hour?!'.",
        },
    ]

    context = OpenAILLMContext(messages)
    context_aggregator = llm.create_context_aggregator(context)

    pipeline = Pipeline(
        [
            transport.input(),
            context_aggregator.user(),
            llm,
            tts,
            transport.output(),
            context_aggregator.assistant(),
        ]
    )

    task = PipelineTask(pipeline, params=PipelineParams(allow_interruptions=True))

    @transport.event_handler("on_first_participant_joined")
    async def on_first_participant_joined(transport, participant):
        await transport.capture_participant_transcription(participant["id"])
        await task.queue_frames([context_aggregator.user().get_context_frame()])

    @transport.event_handler("on_participant_left")
    async def on_participant_left(transport, participant, reason):
        await task.cancel()

    @transport.event_handler("on_dialin_ready")
    async def on_dialin_ready(transport, cdata):
        # For Twilio, Telnyx, etc. You need to update the state of the call
        # and forward it to the sip_uri..
        print(f"Forwarding call: {callId} {sipUri}")

        try:
            # The TwiML is updated using Twilio's client library
            call = twilioclient.calls(callId).update(
                twiml=f"<Response><Dial><Sip>{sipUri}</Sip></Dial></Response>"
            )
        except Exception as e:
            raise Exception(f"Failed to forward call: {str(e)}")

    runner = PipelineRunner()
    await runner.run(task)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Pipecat Simple ChatBot")
    parser.add_argument("-u", type=str, help="Room URL")
    parser.add_argument("-t", type=str, help="Token")
    parser.add_argument("-i", type=str, help="Call ID")
    parser.add_argument("-s", type=str, help="SIP URI")
    config = parser.parse_args()

    asyncio.run(main(config.u, config.t, config.i, config.s))