#!/bin/bash
###################################
#   Unattended Security Updates   #
###################################


###############################
# @author: Bram Prieshof      #
# @author: Branco van de Waal #
###############################

##-----------------##
#   Defining Vars   #
##-----------------##

#Enforcing Legacy Mode
APTMODE="apt"
OUTPUT='/dev/tty'
IMODE=l

#OS Detection
dist_ver=$(grep --color=never -Po "^VERSION_ID=\K.*" "/etc/os-release")
dist=$(grep --color=never -Po "^ID=\K.*" "/etc/os-release")

if [[ "${dist}" == *"ubuntu"* ]] && [[ "${dist_ver}" == *"18.04"* ]]; then
 PKGM="$APTMODE"
 PKGI="${PKGM} install -y --no-install-recommends"
 PKGLIST="apt"
 shortdist=ubu1804
elif [[ "${dist}" == *"ubuntu"* ]] && [[ "${dist_ver}" == *"20.04"* ]]; then
 PKGM="$APTMODE"
 PKGI="${PKGM} install -y --no-install-recommends"
 PKGLIST="apt"
 shortdist=ubu2004 
elif [[ "${dist}" == *"debian"* ]] && [[ "${dist_ver}" == *"10"* ]]; then
 PKGM="$APTMODE"
 PKGI="${PKGM} install -y --no-install-recommends"
 PKGLIST="apt"
 shortdist=deb10
elif [[ "${dist}" == *"centos"* ]] && [[ "${dist_ver}" == *"8"* ]]; then
 PKGM="dnf"
 PKGI="${PKGM} install --setopt=install_weak_deps=False --best -y"
 PKGLIST="dnf"
 shortdist=cent8
else
 echo "This OS is not supported"
 exit
fi

unset dist_ver dist APTMODE

#Repo Vars
repo=https://git.ictmaatwerk.com/VPS-scripts/Unattended-Security-Updates
branch=master
branchtype=branch
mtype=""$repo"/raw/"$branchtype"/"$branch""

#SelfBuilding Vars
PKGI="${PKGM} install -y"


##---------------##
#    Functions    #
##---------------##

msg () {
    echo "$1"
}

##--------------------------##
#   Installer-Requirements   #
##--------------------------##

msg "              Starting installer" 8 78
$PKGM update > $OUTPUT 2>&1
$PKGI curl > $OUTPUT 2>&1


##-------------------------##
#    Generating APT list    #
##-------------------------##

#General aptList
if curl --retry 2 --retry-delay 1 --output /dev/null --silent --head --fail "$mtype"/generic.pkg.list; then
 curl "$mtype"/generic.pkg.list >>/tmp/pkg.list
fi
if curl --retry 2 --retry-delay 1 --output /dev/null --silent --head --fail "$mtype"/"$PKGLIST".pkg.list; then
 curl "$mtype"/"$PKGLIST".pkg.list >>/tmp/pkg.list
fi


##--------------------##
#   Pre-Requirements   #
##--------------------## 

msg "                Preconfiguring"
$PKGM update
$PKGM upgrade -y


##-------------##
#   Installer   #
##-------------##

$PKGM update
cat /tmp/pkg.list | xargs $PKGI


##---------------##
#   Configuring   #
##---------------##

if curl --retry 2 --retry-delay 1 --output /dev/null --silent --head --fail "$mtype"/conf.sh; then
 source <(curl --retry 7 --retry-delay 5 -s "$mtype"/conf.sh)
fi


##-------##
#   end   #
##-------##

msg "                         Done!"