#!/bin/bash

# Variables
declare mac
declare -a wol_com options
name="$(basename "$0")"
wolf_d="${HOME}/.wolf"
wolf_host="${wolf_d}/${hostname}"

# Arguments
hostname="$1"; shift

# Functions
# Throw an error
function error {
    >&2 echo -e "${name}: \033[1;31mERROR:\033[0m ${1:-No further details}"; shift
    exit "${1:-1}"
}

# Parse variable in options file
function getvar {
    grep '^'"$1"' ' "$wolf_host" | cut -d ' ' -f 2
}

# Parsing
[[ -f $wolf_host ]] || error "\"${hostname}\": No such host"

# Assign the options
mac="$(getvar Mac)"
ip="$(getvar IP)"
port="$(getvar Port)"

# Add options if necessary
[[ -n $ip   ]] && options+=(-i "$ip"  )
[[ -n $port ]] && options+=(-p "$port")

# Commands building
# wol
wol_com=(
    wol
    "$@"
    "${options[@]}"
    "$mac"
)

# Debug
#echo "${wol_com[@]}"
#exit 0

# Execution
set -xe
"${wol_com[@]}"