classic.cli

#!/usr/bin/env bash

SUPPORTED_VERSIONS='3.7 3.8 3.9 3.10'

install() {
  installed=
  for v in $SUPPORTED_VERSIONS; do
    which "python${v}" &> /dev/null && installed=t
  done
  if [ -z "${installed}" ]; then
    echo "No valid python version found in the PATH." 1>&2
    echo "Please try again after installing one of python versions: ${SUPPORTED_VERSIONS}" 1>&2
    exit 1
  fi
}

settings() {
  installed=
  default=
  for v in $SUPPORTED_VERSIONS; do
    if which "python${v}" &> /dev/null; then
      installed="${installed} $v,"
      default=$v
    fi
  done
  # shellcheck disable=SC2001
  installed=$(echo "$installed" | sed 's/,$//')
  sed -e "s/\"\$PYTHON_VERSIONS\$\"/${installed}/" -e "s/\"\$DEFAULT_PYTHON_VERSION\$\"/${default}/" "$(dirname "$0")/schema.json"
}

create_environment() {
  version=$2
  requirements=$3
  env_dir=$4
  "python${version}" -m venv --clear "$env_dir" 1>&2 || exit 1
  # shellcheck disable=SC2086
  "${env_dir}/bin/python3" -m pip install -r "$(dirname "$0")/requirements.txt" $requirements 1>&2 || exit 1
  cmd="${env_dir}/bin/python3 $(readlink -f "$(dirname "$0")/tester")"
  echo '{"COMMAND": "_cmd_"}' | sed "s:_cmd_:${cmd}:"
}

[ "$1" = "install" ] && install
[ "$1" = "settings" ] && settings
[ "$1" = "create_environment" ] && create_environment "$@"

exit 0