#!/usr/bin/env bash

set -euo pipefail

TARGET_VERSION="${1:-3.11}"
IFS="." read -r PYTHON_MAJOR PYTHON_MINOR _ <<< "${TARGET_VERSION}"

if [[ -n "${PYTHON_MINOR:-}" ]]; then
  PYTHON_BIN="python${PYTHON_MAJOR}.${PYTHON_MINOR}"
else
  PYTHON_BIN="python${PYTHON_MAJOR}"
fi

if command -v "${PYTHON_BIN}" >/dev/null 2>&1; then
  command -v "${PYTHON_BIN}"
  exit 0
fi

export DEBIAN_FRONTEND=noninteractive

apt-get update
apt-get install -y software-properties-common
add-apt-repository -y ppa:deadsnakes/ppa
apt-get update
apt-get install -y "${PYTHON_BIN}" "${PYTHON_BIN}-venv"

command -v "${PYTHON_BIN}"