#!/bin/bash


function main {
  if [ $(uname -s) == "Darwin" ]; then
    echo "Identified client variant as Macintosh"
  elif [ $(uname -s) == "Linux" ]; then
    echo "Identified client variant as Linux"
    if [[ -f /etc/redhat-release ]]; then
      linux_redhat_packages
    elif [[ -f /etc/lsb-release ]]; then
      linux_debian_packages
    fi 
  fi

  remove_older_queues
  install_smb_uos_secure_print

}

function linux_redhat_packages {
  echo "Checking for samab-client and cups installation"
  if  ! yum info samba-client | grep -q installed ; then
   yum install -y samba-client
  fi
  if  ! yum info cups | grep -q installed ; then
   yum install -y cups
   service cups restart
  fi
}

function linux_debian_packages {
  echo "Checking for smbclient and cups installation"
  if apt-cache policy smbclient | grep -q "Installed: (none)" ; then
    apt-get install -y -qq smbclient
  fi
  if apt-cache policy cups | grep -q "Installed: (none)" ; then
    apt-get install -y -qq cups
    service cups restart
  fi
}

function remove_older_queues {
  old_usp_uri="lpd://anuosprt03.uosprinting.com/uos_secure_print"
  old_mfdo="MFD_OFFICE"

  if lpstat -t | grep -q $old_usp_uri ; then
    echo "Found LPD instance of UoS_Secure_Print, this will be removed"
    lpadmin -x UoS_Secure_Print
  fi

  if lpstat -t | grep -q $old_mfdo ; then
    echo "Found older print service at MFD_OFFICE, this will be removed"
    lpadmin -x MFD_OFFICE
  fi
}

function install_smb_uos_secure_print {
  # Printer relevant vars
  q_name=UoS_Secure_Print
  q_url="smb://anuosprt03.uosprinting.com/$(echo $q_name | tr '[:upper:]' '[:lower:]')"
  prntr_opts="-o option19=One -o option17=DF770 -o option22=True -o option21=True -o option18=HardDisk"

  # PPD relevant vars
  ppd=Kyocera_TASKalfa_6052ci.PPD
  ppd_loc="http://www.sussex.ac.uk/its/downloads/$ppd"
  ppd_dir="/tmp"
  ppd_dest=$ppd_dir/$ppd

  # Download the PPD for the printer
  if [[ ! -f $ppd_dest ]]; then
    echo "Downlaoding PPD for $q_name"
    curl -s -o $ppd_dest $ppd_loc
  fi

  # Installing printer
  if [[ -f $ppd_dest ]]; then
    if ! lpstat -p | grep -q $q_name; then
      echo "Installing $q_name"
      lpadmin -p $q_name -E -v $q_url -P $ppd_dest $prntr_opts
      if lpstat -t | grep -q $q_url ; then
        echo "UoS_Secure_Print installed successfully"
      else
        printf "Something went wrong, UoS_Secure_Print could not be installed.\n Please contact IT Services for assistance."
        exit 1
      fi
      exit 0
    else
      echo "UoS_Secure_Print already installed correctly"
      exit 0
    fi
  else
    echo "ERROR: Cannot locate downloaded PPD, not installing printer"
    exit 1
  fi
}

main
# Last Line