toddleglow.postinst

#!/bin/sh

USERNAME='toddleglow'

case "$1" in
    configure)
        if ! /usr/bin/getent passwd toddleglow > /dev/null 2>&1 ; then
            adduser --system ${USERNAME} --home /var/lib/toddleglow
        fi
        if  /usr/bin/getent group i2c ; then
            if ! /usr/bin/getent group i2c | grep -q ${USERNAME} ; then
                echo "Found i2c group, adding user to group, so it can access the GPIO interface"
                usermod -a -G i2c ${USERNAME}
            fi
        fi
        echo "Fixing permissions"
        if [ ! -d /var/lib/toddleglow ] ; then
            mkdir /var/lib/toddleglow
        fi
        chown -R ${USERNAME} /var/lib/toddleglow
        if [ ! -f /etc/toddleglow/config.json ] ; then
            cp /var/lib/toddleglow/examples/config.json /etc/toddleglow
        fi
        chown ${USERNAME} /etc/toddleglow/config.json
    ;;
    abort-upgrade|abort-remove|abort-deconfigure)

    ;;
    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask toddleglow.service >/dev/null || true

# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled toddleglow.service; then
        # Enables the unit on first installation, creates new
        # symlinks on upgrades if the unit file has changed.
        deb-systemd-helper enable toddleglow.service >/dev/null || true
        deb-systemd-invoke restart toddleglow.service >/dev/null || true
else
        # Update the statefile to add new symlinks (if any), which need to be
        # cleaned up on purge. Also remove old symlinks.
        deb-systemd-helper update-state toddleglow.service >/dev/null || true
fi
if [ -d /run/systemd/system ]; then
        systemctl --system daemon-reload >/dev/null || true
        deb-systemd-invoke start toddleglow.service >/dev/null || true
fi