#!/bin/sh
#                               
#  ██████████   ██████  ███████ 
# ░░██░░██░░██ ██░░░░██░░██░░░██
#  ░██ ░██ ░██░██   ░██ ░██  ░██
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# ░░░  ░░  ░░  ░░░░░░  ░░░   ░░ 
#

usage() {
  echo "usage: $(basename $0) [-lr <id>]\n    -l list monitor ids\n    -r get resolution by id\n" >&2
  exit 1
}

list() {
  mons=`xrandr | grep -e "^.* connected" | cut -d " "  --field "1"`
  for mon in $mons; do
    echo "$mon"
  done
}

res() {
  [ -z $1 ] && usage
  res=`xrandr\
    | grep -e "^$1 connected"\
    | cut --delimiter=' ' --fields='3'\
    | sed "s/[x\+]/ /g"`
  echo $res
}

while getopts "lr:" opt
do
  case $opt in
    # list
    l)
      list
    ;;
    # res
    r)
      res $OPTARG
    ;;
    *)
      usage
    ;;
  esac  
done
[ -z $1 ] && usage