#!/usr/bin/env bash
set -o errexit -o nounset -o pipefail

INDENT="    "
POSSIBLE_PYTHONS=(
    python
    python2
    python3
    /usr/bin/python
    /usr/bin/python2
    /usr/bin/python3
    # GitHub macOS 12 images: python2.7 is installed, but not on $PATH
    /Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
)

for p in "${POSSIBLE_PYTHONS[@]}"; do
    echo "$p"
    if [[ ${p:0:1} == "/" && -e $p ]]; then
        :
    elif type "$p" > /dev/null 2>&1; then
        type "$p" 2>&1 | sed -e "s/^/${INDENT}type: /"
    else
        echo "${INDENT}Not present"
        echo
        continue
    fi

    $p -c "import sys;          print('${INDENT}version:        %d.%d.%d' % sys.version_info[:3])"
    # macOS builders lack a realpath command
    $p -c "import os.path;      print('${INDENT}realpath:       %s' % os.path.realpath('$(type -p "$p")'))"
    $p -c "import sys;          print('${INDENT}sys.executable: %s' % sys.executable)"
    echo
done