#!/usr/bin/env bash
#
# Check whether Python is installed.
#
# Usage: check_python
#

# VARIABLES #

# Find python:
PYTHON=$(command -v python 2>/dev/null)


# FUNCTIONS #

# Prints usage information.
usage() {
	echo '' >&2
	echo 'Usage: check_python' >&2
	echo '' >&2
}

# MAIN #

if [[ -x "${PYTHON}" ]] && "${PYTHON}" --version >/dev/null; then
	echo 'Python is installed.' >&2
	exit 0
else
	echo 'ERROR: missing dependency. Please download Python version 2.7 (https://www.python.org/). Once installed, run the command again.' >&2
	exit 1
fi

# TODO: check for minimum version