Add standalone Daily + Twilio SIP example

examples/phone-chatbot-daily-twilio-sip/bot.py

@@ -0,0 +1,153 @@
+"""Twilio + Daily voice bot implementation."""
+
+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.cartesia.tts import CartesiaTTSService
+from pipecat.services.openai.llm import OpenAILLMService
+from pipecat.transports.services.daily import DailyParams, DailyTransport
+
+# Setup logging
+load_dotenv()
+logger.remove(0)
+logger.add(sys.stderr, level="DEBUG")
+
+# Initialize Twilio client
+twilio_client = Client(os.getenv("TWILIO_ACCOUNT_SID"), os.getenv("TWILIO_AUTH_TOKEN"))
+
+
+async def run_bot(room_url: str, token: str, call_id: str, sip_uri: str) -> None:
+    """Run the voice bot with the given parameters.
+
+    Args:
+        room_url: The Daily room URL
+        token: The Daily room token
+        call_id: The Twilio call ID
+        sip_uri: The Daily SIP URI for forwarding the call
+    """
+    logger.info(f"Starting bot with room: {room_url}")
+    logger.info(f"SIP endpoint: {sip_uri}")
+
+    # Setup the Daily transport
+    transport = DailyTransport(
+        room_url,
+        token,
+        "Phone Bot",
+        DailyParams(
+            audio_in_enabled=True,
+            audio_out_enabled=True,
+            transcription_enabled=True,
+            vad_analyzer=SileroVADAnalyzer(),
+        ),
+    )
+
+    # Setup TTS service
+    tts = CartesiaTTSService(
+        api_key=os.getenv("CARTESIA_API_KEY"),
+        voice_id="71a7ad14-091c-4e8e-a314-022ece01c121",  # British Reading Lady
+    )
+
+    # Setup LLM service
+    llm = OpenAILLMService(api_key=os.getenv("OPENAI_API_KEY"))
+
+    # Initialize LLM context with system prompt
+    messages = [
+        {
+            "role": "system",
+            "content": (
+                "You are a friendly phone assistant. Your responses will be read aloud, "
+                "so keep them concise and conversational. Avoid special characters or "
+                "formatting. Begin by greeting the caller and asking how you can help them today."
+            ),
+        },
+    ]
+
+    # Setup the conversational context
+    context = OpenAILLMContext(messages)
+    context_aggregator = llm.create_context_aggregator(context)
+
+    # Build the pipeline
+    pipeline = Pipeline(
+        [
+            transport.input(),
+            context_aggregator.user(),
+            llm,
+            tts,
+            transport.output(),
+            context_aggregator.assistant(),
+        ]
+    )
+
+    # Create the pipeline task
+    task = PipelineTask(
+        pipeline,
+        params=PipelineParams(
+            allow_interruptions=True  # Enable barge-in so callers can interrupt the bot
+        ),
+    )
+
+    # Handle participant joining
+    @transport.event_handler("on_first_participant_joined")
+    async def on_first_participant_joined(transport, participant):
+        logger.info(f"First participant joined: {participant['id']}")
+        await transport.capture_participant_transcription(participant["id"])
+        await task.queue_frames([context_aggregator.user().get_context_frame()])
+
+    # Handle participant leaving
+    @transport.event_handler("on_participant_left")
+    async def on_participant_left(transport, participant, reason):
+        logger.info(f"Participant left: {participant['id']}, reason: {reason}")
+        await task.cancel()
+
+    # Handle call ready to forward
+    @transport.event_handler("on_dialin_ready")
+    async def on_dialin_ready(transport, cdata):
+        logger.info(f"Forwarding call {call_id} to {sip_uri}")
+
+        try:
+            # Update the Twilio call with TwiML to forward to the Daily SIP endpoint
+            twilio_client.calls(call_id).update(
+                twiml=f"<Response><Dial><Sip>{sip_uri}</Sip></Dial></Response>"
+            )
+            logger.info("Call forwarded successfully")
+        except Exception as e:
+            logger.error(f"Failed to forward call: {str(e)}")
+            raise
+
+    # Run the pipeline
+    runner = PipelineRunner()
+    await runner.run(task)
+
+
+async def main():
+    """Parse command line arguments and run the bot."""
+    parser = argparse.ArgumentParser(description="Daily + Twilio Voice Bot")
+    parser.add_argument("-u", type=str, required=True, help="Daily room URL")
+    parser.add_argument("-t", type=str, required=True, help="Daily room token")
+    parser.add_argument("-i", type=str, required=True, help="Twilio call ID")
+    parser.add_argument("-s", type=str, required=True, help="Daily SIP URI")
+
+    args = parser.parse_args()
+
+    # Validate required arguments
+    if not all([args.u, args.t, args.i, args.s]):
+        logger.error("All arguments (-u, -t, -i, -s) are required")
+        parser.print_help()
+        sys.exit(1)
+
+    await run_bot(args.u, args.t, args.i, args.s)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())