#!/bin/sh

# https://linuxhint.com/enable-disable-unattended-upgrades-ubuntu/
# https://newbedev.com/how-is-unattended-upgrades-started-and-how-can-i-modify-its-schedule
# https://haydenjames.io/how-to-enable-unattended-upgrades-on-ubuntu-debian/
# https://askubuntu.com/questions/921162/how-can-i-automate-a-conffile-prompt-in-unattended-upgrades
# https://github.com/mvo5/unattended-upgrades/blob/master/README.md

# To run from Internet: 
#     sudo sh -c "$(curl -s http://apps.control2net.com/apt/install-dingo-stack-upgrade)"

FILE="/etc/apt/apt.conf.d/50unattended-upgrades"
if [ -f "$FILE" ]; then
    echo "DINGO-STACK UPGRADE IS ALREADY INSTALLED !"
    echo ""
    echo "Edit /etc/apt/apt.conf.d/50unattended-upgrades"
    echo '    Add "site=apps.control2net.com,component=main";'
    echo "    to section: Unattended-Upgrade::Origins-Pattern "
    echo "    Also add this section:"
    echo "        Dpkg::Options {"
    echo '           "--force-confdef";'
    echo '           "--force-confold";'
    echo "        };"
    echo ""
    echo "Also check /etc/apt/apt.conf.d/20auto-upgrades"
    #exit 0
else
    apt update -y
    apt -y --force-yes install unattended-upgrades
    cd /etc/apt/apt.conf.d/
    wget -O 50unattended-upgrades http://apps.control2net.com/apt/misc/50unattended-upgrades
    exists=`grep -F 'Download-Upgradeable-Packages' /etc/apt/apt.conf.d/20auto-upgrades`
    if [ -z "$exists" ]
    then
        bash -c "echo 'APT::Periodic::Download-Upgradeable-Packages \"1\";' >> /etc/apt/apt.conf.d/20auto-upgrades"
    fi
fi

echo "Finished."

echo "These files control the behavior:"
echo " /etc/apt/apt.conf.d/50unattended-upgrades"
echo " /etc/apt/apt.conf.d/20auto-upgrades"
echo "Log files:"
echo " /var/log/unattended-upgrades/unattended-upgrades-dpkg.log"
echo " /unattended-upgrades.log"