"""CLI entrypoint: python scripts/train.py [--config configs/default.yaml] [--epochs N]"""
from __future__ import annotations

import argparse
import os
import sys

import yaml

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from engine.train import train  # noqa: E402


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("--config", default="configs/default.yaml")
    parser.add_argument("--epochs", type=int, default=None, help="override train.epochs")
    parser.add_argument("--num-threads", type=int, default=12)
    parser.add_argument("--use-cuda", action="store_true", help="try CUDA if available")
    args = parser.parse_args()

    with open(args.config) as f:
        cfg = yaml.safe_load(f)

    if args.epochs is not None:
        cfg["train"]["epochs"] = args.epochs
    cfg["num_threads"] = args.num_threads
    cfg["train"]["use_cuda"] = args.use_cuda

    train(cfg)


if __name__ == "__main__":
    main()