#!/usr/bin/env bash
set -euo pipefail

PROJECT_DIR="${PROJECT_DIR:-/workspace/KAWK50M}"
VENV_DIR="${VENV_DIR:-${PROJECT_DIR}/.venv}"
CONFIG="${CONFIG:-configs/pretrain_5b_5090.yaml}"
RESUME="${RESUME:-}"
STOP_AFTER_STEPS="${STOP_AFTER_STEPS:-}"

cd "${PROJECT_DIR}"
if [[ ! -x "${VENV_DIR}/bin/python" ]]; then
  echo "Virtual environment not found: ${VENV_DIR}" >&2
  echo "Run: bash runpod/bootstrap.sh" >&2
  exit 1
fi
source "${VENV_DIR}/bin/activate"

python -m scripts.preflight --config "${CONFIG}"

if [[ "${SKIP_BENCHMARK:-0}" != "1" ]]; then
  python -m scripts.benchmark \
    --batch-size 32 \
    --gradient-accumulation 4 \
    --compile \
    --warmup-steps 1 \
    --steps 3
fi

command=(python -m scripts.pretrain --config "${CONFIG}")
if [[ -n "${RESUME}" ]]; then
  command+=(--resume "${RESUME}")
fi
if [[ -n "${STOP_AFTER_STEPS}" ]]; then
  command+=(--stop-after-steps "${STOP_AFTER_STEPS}")
fi

"${command[@]}"