_resolve_python.sh

# shellcheck shell=bash
# Resolve a working Python interpreter (Git Bash on Windows often has a broken python3 store stub).

python_runs() {
  local bin="$1"
  command -v "${bin}" >/dev/null 2>&1 || return 1
  "${bin}" -c "import sys" >/dev/null 2>&1
}

resolve_python() {
  if [[ -n "${PYTHON:-}" ]]; then
    if python_runs "${PYTHON}"; then
      echo "${PYTHON}"
      return 0
    fi
    echo "PYTHON=${PYTHON} is not runnable" >&2
    return 1
  fi
  local candidates=(python3 python)
  case "$(uname -s 2>/dev/null || true)" in
    MINGW*|MSYS*|CYGWIN*)
      candidates=(python python3)
      ;;
  esac
  local c
  for c in "${candidates[@]}"; do
    if python_runs "${c}"; then
      echo "${c}"
      return 0
    fi
  done
  echo "python or python3 required (install Python or set PYTHON=...)" >&2
  return 1
}

run_materialize_admission_cases() {
  local root="$1"
  local py
  py="$(resolve_python)" || return 1
  PCS_BENCHMARK_QUIET=1 "${py}" "${root}/scripts/materialize-admission-benchmark-cases.py" --quiet
}

# ensure_pcs_core_python installs pcs-core (editable) so benchmark_ingest validation can import referencing/jsonschema.
ensure_pcs_core_python() {
  local pcs_core="$1"
  local py
  py="$(resolve_python)" || return 1
  if [[ -z "${pcs_core}" || ! -d "${pcs_core}/python" ]]; then
    echo "pcs-core python package not found at ${pcs_core}/python" >&2
    return 1
  fi
  if [[ -n "${PCS_SKIP_PCS_CORE_PIP:-}" ]]; then
    return 0
  fi
  if "${py}" -c "from pcs_core.benchmark_ingest import validate_benchmark_ingest_file" 2>/dev/null; then
    return 0
  fi
  if "${py}" -m pip install -q -e "${pcs_core}/python" 2>/dev/null; then
    return 0
  fi
  if "${py}" -m pip install -q --user -e "${pcs_core}/python"; then
    return 0
  fi
  echo "failed to install pcs-core python package from ${pcs_core}/python" >&2
  return 1
}