Casing arrow keys in bash

Question

Is it possible to case arrow keys in a bash script to run a certain set of commands if the up/left arrow keys are pressed, and a certain set if the down/right arrow keys are

Answer 1

To extend JellicleCat's answer:

#!/bin/bash
escape_char=$(printf "\u1b")
read -rsn1 mode # get 1 character
if [[ $mode == $escape_char ]]; then
    read -rsn4 -t 0.001 mode # read 2 more chars
fi
case $mode in
    '') echo escape ;;
    '[a') echo UP ;;
    '[b') echo DOWN ;;
    '[d') echo LEFT ;;
    '[c') echo RIGHT ;;
    '[A') echo up ;;
    '[B') echo down ;;
    '[D') echo left ;;
    '[C') echo right ;;
    '[2~') echo insert ;;
    '[7~') echo home ;;
    '[7$') echo HOME ;;
    '[8~') echo end ;;
    '[8$') echo END ;;
    '[3~') echo delete ;;
    '[3$') echo DELETE ;;
    '[11~') echo F1 ;;
    '[12~') echo F2 ;;
    '[13~') echo F3 ;;
    '[14~') echo F4 ;;
    '[15~') echo F5 ;;
    '[16~') echo Fx ;;
    '[17~') echo F6 ;;
    '[18~') echo F7 ;;
    '[19~') echo F8 ;;
    '[20~') echo F9 ;;
    '[21~') echo F10 ;;
    '[22~') echo Fy ;;
    '[23~') echo F11 ;;
    '[24~') echo F12 ;;
    '') echo backspace ;;
    *) echo $mode;;
esac