#!/usr/bin/env bash
set -e
[ -n "$PYENV_DEBUG" ] && set -x

if [ -z "$PYENV_VERSION" ]; then
  PYENV_VERSION_FILE="$(pyenv-version-file)"
  PYENV_VERSION="$(pyenv-version-file-read "$PYENV_VERSION_FILE" || true)"
fi

if [ -z "$PYENV_VERSION" ] || [ "$PYENV_VERSION" = "system" ]; then
  echo "system"
  exit
fi

PYENV_VERSION_PATH="${PYENV_ROOT}/versions/${PYENV_VERSION}"

if [ -d "$PYENV_VERSION_PATH" ]; then
  echo "$PYENV_VERSION"
else
  echo "pyenv: version \`$PYENV_VERSION' is not installed" >&2
  exit 1
fi