#!/bin/bash
. /etc/os-release

BAUDRATE () {
clear
echo -e "\n Odaberi brzinu COM porta:\n\n\e[1;32m 1\e[0m = 9600\n\n\e[1;32m 2\e[0m = 19200 <= default\n\n\e[1;32m 3\e[0m = 115200\n\n"
read Speed
case "$Speed" in
1*)
 Speed="9600"
;;
2*|"")
 Speed="19200"
;;
3*)
 Speed="115200"
;;
"")
 clear
 echo -e "\n Nije odabrana brzina porta. Izlazim."
 read -p ""
 exit 1
;;
*)
 clear
 echo -e "\n Krivo upisana brzina porta. Pokušaj opet."
 read -p ""
 BAUDRATE
;;
esac
stty $Speed < $Port
stty $Speed -F $Port
}

TESTING () {
clear
Back=""
if [ "$Port" = "/dev/ttyS0" ]; then
 Back="\n\n\e[1;32m 4..9\e[0m = vrati se nazad na brzinu COM porta"
fi
echo -e "\n Što želiš testirati?\n\n\e[1;32m 1\e[0m = ispis\n\n\e[1;32m 2\e[0m = POS ladicu\n\n\e[1;32m 3\e[0m = nož$Back\n\n\e[1;32m 0\e[0m = završi test\n\n"
read Test

case "$Test" in
1*)
 echo -e "==========================================
    CLI POS PRINTER TESTER VERZIJE 0.1
==========================================
ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOP
abcdefghijklmnopqrstuvwxyzabcdefghijklmnop
012345678901234567890123456789012345678901
------------------------------------------
Distribucija: $PRETTY_NAME
Linux kernel: $(uname -r)
------------------------------------------
           KRAJ TESTA PRINTANJA
------------------------------------------\n\n" > $Port
;;
2*)
 echo -e "\ep025\r\n" > $Port
;;
3*)
 echo -e "\ei\r\n" > $Port
;;
4*|5*|6*|7*|8*|9*)
 BAUDRATE
;;
*)
 clear
 exit
;;
esac
TESTING
}

which sudo > /dev/null
if [ $? != 0 ]; then
 User=`whoami`
 if [ $User != "root" ]; then
  echo -e "\n Skriptu moraš pokrenuti kao root!"
  read -p ""
  clear
  exit 1
 fi
else
 clear
 echo -e "\n Upiši lozinku korisnika \e[1;32m$USER\e[0m (neće biti prikazana):\n"
 read -s Pass
 echo "$Pass" | sudo -S echo " " > /dev/null
 if [ $? != 0 ]; then
  echo -e "\n \e[1;31mPogrešna korisnička lozinka!\e[0m\n"
  exit 1
 fi
fi

clear
echo -e "\n Odaberi port POS printera:\n\n\e[1;32m U\e[0m = USB\n\n\e[1;32m C\e[0m = COM\n\n"
read Port

case "$Port" in
u*|U*)
 Port="/dev/usb/lp0"
 which sudo > /dev/null
 if [ $? != 0 ]; then
  chmod o+rw $Port
 else
  echo "$Pass" | sudo -S chmod o+rw $Port
 fi
;;
c*|C*)
 Port="/dev/ttyS0"
 which sudo > /dev/null
 if [ $? != 0 ]; then
  chmod o+rw $Port
 else
  echo "$Pass" | sudo -S chmod o+rw $Port
 fi
 BAUDRATE
;;
"")
 clear
 echo -e "\n Nije odabran port."
 read -p ""
 exit 1
;;
*)
 clear
 echo -e "\n Odabran je krivi port."
 read -p ""
 exit 1
;;
esac

TESTING