pre_install() {
    # Create group and goweatherserver user
    name=goweatherserver
    num=488
    getent group $name &>/dev/null || groupadd -r -g $num $name >/dev/null
    getent passwd $name &>/dev/null || useradd -r -u $num -g $name -d /tmp -s /bin/bash >/dev/null $name

    true
}

post_install() {
    pkgname=goweatherserver

    # Fixing membership
    chown goweatherserver: /var/log/$pkgname
    chown goweatherserver: /var/lib/$pkgname
    chown -R goweatherserver: /etc/$pkgname

    # Reload systemctl
    systemctl daemon-reload

    echo "Adding goweatherserver in systemctl:"
    echo "  systemctl enable goweatherserver"
    echo "  systemctl start goweatherserver"

    true
}

post_upgrade() {
    # Reload systemctl
    systemctl daemon-reload

    echo "You should restart goweatherserver:"
    echo "  systemctl restart goweatherserver"

    true
}

pre_remove() {
    # Remove symlink in systemd
    systemctl disable goweatherserver
    # Stop server
    systemctl stop goweatherserver
    # Reload systemctl
    systemctl daemon-reload

    true
}

post_remove() {
    # Remove group and goweatherserver user
    name=goweatherserver
    getent passwd $name &>/dev/null && userdel $name >/dev/null
    getent group $name &>/dev/null && groupdel $name >/dev/null

    true
}