# Copyright (c) 2026 LightSeek Foundation
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"""TokenSpeed CLI entry point."""

import argparse
import sys


def _serve(args: argparse.Namespace, raw_argv: list[str]) -> None:
    from tokenspeed.cli.serve_smg import run_smg_from_args

    run_smg_from_args(args, raw_argv)


def _bench(args: argparse.Namespace) -> None:
    from tokenspeed.bench import main as bench_main

    bench_main(args.bench_args)


def _env(args: argparse.Namespace) -> None:
    from tokenspeed.env import main as env_main

    env_main()


def _version(args: argparse.Namespace) -> None:
    from tokenspeed.version import __version__

    print(f"TokenSpeed v{__version__}")


def main() -> None:
    parser = argparse.ArgumentParser(
        prog="tokenspeed",
        description="TokenSpeed is a speed-of-light LLM inference engine.",
    )

    subparsers = parser.add_subparsers(dest="command")

    # Unknown flags fall through to the smg orchestrator's own splitter; we
    # don't register the engine's ServerArgs on this parser.
    serve_parser = subparsers.add_parser(
        "serve",
        help="Launch the TokenSpeed inference server.",
    )
    serve_parser.set_defaults(func=_serve)

    bench_parser = subparsers.add_parser(
        "bench",
        add_help=False,
        help="Run TokenSpeed benchmark commands.",
    )
    bench_parser.set_defaults(func=_bench, bench_args=[])

    env_parser = subparsers.add_parser(
        "env",
        help="Check environment configurations and dependency versions.",
    )
    env_parser.set_defaults(func=_env)

    version_parser = subparsers.add_parser(
        "version",
        help="Print the TokenSpeed version.",
    )
    version_parser.set_defaults(func=_version)

    args, extra_args = parser.parse_known_args()

    if args.command is None:
        parser.print_help()
        sys.exit(1)

    if args.func is _bench:
        args.bench_args = extra_args
        args.func(args)
        return

    if args.func is _serve:
        raw = list(sys.argv[2:])
        args.func(args, raw)
        return

    if extra_args:
        parser.error(f"unrecognized arguments: {' '.join(extra_args)}")
    args.func(args)


if __name__ == "__main__":
    main()