#!/usr/bin/env bash
# Returns which status

# Enable verbosity with VERBOSE=1
VERBOSE="${VERBOSE:-0}"

# Function to print usage information
usage()
{
  echo "Usage: $0 <command>"
  exit 1
}

# Function to print messages if VERBOSE is enabled
# $1 - message (string)
msg()
{
  [[ "$VERBOSE" -eq 1 ]] && echo "$1"
  return 0
}

# Function to check if a command exists
# $1 - command to check (string)
check_command()
{
  local cmd=$1

  if command -v "$cmd" > /dev/null 2>&1; then
    msg "(*) '$cmd' is available on the system."
    exit 0
  else
    msg "(!) '$cmd' is NOT available on the system."
    exit 1
  fi
}

# Main function
main()
{
  if [ "$#" -ne 1 ]; then
    usage
  fi

  check_command "$1"
}

main "$@"