"""Command line launcher for the Skybrush proxy server."""

import click
import dotenv
import logging
import sys
import trio

from flockwave import logger
from flockwave.logger import log

from .version import __version__


@click.command()
@click.option(
    "-c",
    "--config",
    type=click.Path(resolve_path=True),
    help="Name of the configuration file to load; defaults to "
    "skybrush-proxy.cfg in the current directory",
)
@click.option(
    "-d", "--debug/--no-debug", default=False, help="Start the proxy in debug mode"
)
@click.option(
    "-q", "--quiet/--no-quiet", default=False, help="Start the proxy in quiet mode"
)
@click.option(
    "--log-style",
    type=click.Choice(["fancy", "plain"]),
    default="fancy",
    help="Specify the style of the logging output",
)
@click.version_option(version=__version__)
def start(config, debug, quiet, log_style):
    """Start the Skybrush proxy server."""
    # Set up the logging format
    logger.install(
        level=logging.DEBUG if debug else logging.WARN if quiet else logging.INFO,
        style=log_style,
    )

    # Load environment variables from .env
    dotenv.load_dotenv(verbose=debug)

    # Note the lazy import; this is to ensure that the logging is set up by the
    # time we start configuring the app.
    from flockwave.proxy.app import app

    # Log what we are doing
    log.info(f"Starting Skybrush proxy server {__version__}")

    # Configure the application
    retval = app.prepare(config, debug=debug)
    if retval is not None:
        return retval

    # Now start the server
    trio.run(app.run)

    # Log that we have stopped cleanly.
    log.info("Shutdown finished")


if __name__ == "__main__":
    sys.exit(start(prog_name="skybrush-proxyd"))