#!/usr/bin/env bash
# usage: br-box X Y W H

X="$1"
Y="$2"
W="$3"
H="$4"

# top
tput cup "$Y" "$X"; printf "╔"
printf "%*s" "$((W-2))" "" | tr ' ' '═'
printf "╗"

# sides
for ((i=1;i<=H-2;i++)); do
  tput cup "$((Y+i))" "$X"; printf "║"
  tput cup "$((Y+i))" "$((X+W-1))"; printf "║"
done

# bottom
tput cup "$((Y+H-1))" "$X"; printf "╚"
printf "%*s" "$((W-2))" "" | tr ' ' '═'
printf "╝"