#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#

import argparse

from dotenv import load_dotenv
from loguru import logger

from pipecat.evals.transport import EvalTransportParams
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.worker import PipelineWorker, ProcessorUnusablePolicy
from pipecat.processors.gstreamer.pipeline_source import GStreamerPipelineSource
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
from pipecat.workers.runner import WorkerRunner

load_dotenv(override=True)

# We use lambdas to defer transport parameter creation until the transport
# type is selected at runtime.
transport_params = {
    "eval": lambda: EvalTransportParams(
        audio_in_enabled=True,
        audio_out_enabled=True,
    ),
    "daily": lambda: DailyParams(
        audio_out_enabled=True,
        video_out_enabled=True,
        video_out_is_live=True,
        video_out_width=1280,
        video_out_height=720,
    ),
    "webrtc": lambda: TransportParams(
        audio_out_enabled=True,
        video_out_enabled=True,
        video_out_is_live=True,
        video_out_width=1280,
        video_out_height=720,
    ),
}


async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
    logger.info(f"Starting bot with video input: {runner_args.cli_args.input}")

    gst = GStreamerPipelineSource(
        pipeline=f"filesrc location={runner_args.cli_args.input}",
        out_params=GStreamerPipelineSource.OutputParams(
            video_width=1280,
            video_height=720,
        ),
    )

    pipeline = Pipeline(
        [
            gst,  # GStreamer file source
            transport.output(),  # Transport bot output
        ]
    )

    worker = PipelineWorker(
        pipeline,
        idle_timeout_secs=runner_args.pipeline_idle_timeout_secs,
        processor_unusable_policy=ProcessorUnusablePolicy.END,
    )

    runner = WorkerRunner(handle_sigint=runner_args.handle_sigint)

    await runner.add_workers(worker)

    @transport.event_handler("on_client_connected")
    async def on_client_connected(transport, client):
        logger.info("Client connected")

    @transport.event_handler("on_client_disconnected")
    async def on_client_disconnected(transport, client):
        logger.info("Client disconnected")
        await runner.cancel()

    await runner.run()


async def bot(runner_args: RunnerArguments):
    """Main bot entry point compatible with Pipecat Cloud."""
    transport = await create_transport(runner_args, transport_params)
    await run_bot(transport, runner_args)


if __name__ == "__main__":
    from pipecat.runner.run import main

    parser = argparse.ArgumentParser(description="Pipecat Video Streaming Bot")
    parser.add_argument("-i", "--input", type=str, required=True, help="Input video file")

    main(parser)