#!/bin/sh

# Parse the -virtualenv command line argument.
virtualenv=""
for arg in "$@"
do
    case $arg in
        -virtualenv=*)
        virtualenv="${arg#*=}"
        break
        ;;
    esac
done

if [ -n "${virtualenv:-}" ] ; then
    # Remove trailing slash.
    virtualenv=${virtualenv%/}

    # Make the path absolute (if not already).
    case $virtualenv in
        /*) : ;;
        *) virtualenv=$PWD/$virtualenv;;
    esac

    # If python exists in the virtual environment, set PATH and run it.
    if [ -f "$virtualenv/bin/python" ]; then
        # Update PATH and unset PYTHONHOME.
        PATH="$virtualenv/bin:$PATH"
        export PATH
        if [ -n "${PYTHONHOME:-}" ] ; then
            unset PYTHONHOME
        fi

        # Run python from the virtual environment.
        "$virtualenv/bin/python" -u -m pulumi.policy "$1" "$2"
    else
        echo "\"$virtualenv\" doesn't appear to be a virtual environment"
        exit 1
    fi
else
    # Otherwise, just run python3.
    python3 -u -m pulumi.policy "$1" "$2"
fi