#!/bin/bash
# postinst script for dump1090
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

NAME=dump1090-fa
RUNAS=dump1090
CRONFILE=/etc/cron.d/$NAME
TEMPLATECRON=/usr/share/$NAME/cron-template

case "$1" in
    configure)
        . /usr/share/debconf/confmodule

        if ! getent passwd "$RUNAS" >/dev/null
        then
            adduser --system --home /usr/share/$NAME --no-create-home --quiet "$RUNAS"
        fi

        # plugdev required for bladeRF USB access
        adduser "$RUNAS" plugdev

        # Make sure the "data" directory is owned by dump1090 so the dump1090-fa process has write access
        jsondir="/usr/share/dump1090-fa/html/data"
        if [ -d ${jsondir} ]; then
            echo "Changing permissions on ${jsondir}..." >&2
            chown ${RUNAS}:nogroup ${jsondir}
            chmod 755 ${jsondir}
        fi

        # Update apache
        changed=false
        for apachefile in /etc/apache2/sites-available/000-default.conf /etc/apache2/sites-available/default-ssl.conf
        do
            if [ -f ${apachefile} ]; then
                echo "Modifying ${apachefile}..." >&2
                sed -i '/<\/VirtualHost>/i \
        ####dump1090-start###\
        Alias  "/data" "/dump1090-fa/data"\
        Alias  "/dump1090-fa" "/usr/share/dump1090-fa/html"\
        Alias  "^/dump1090-fa$" "/dump1090-fa"\
        SetEnvIf Request_URI "/dump1090-fa/data/.*\.json$" Header set "Access-Control-Allow-Origin" "*"\
        ####dump1090-end###' ${apachefile}
                changed=true
            fi
        done

        # Restart apache
        if $changed
        then
            echo "Restarting Apache..." >&2
            invoke-rc.d apache2 restart || echo "Warning: apache2 failed to restart." >&2
        fi



        # on upgrade, add an ENABLED line if it's not already present
        if dpkg --compare-versions "$2" lt-nl "3.7.0"
        then
            if [ -f /etc/default/dump1090-fa ]
            then
                if ! grep -q -E '^ENABLED=' /etc/default/dump1090-fa
                then
                    echo "Setting ENABLED=yes in /etc/default/dump1090-fa.." >&2
                    echo "# Automatically added by upgrade from $2" >>/etc/default/dump1090-fa
                    echo "ENABLED=yes" >>/etc/default/dump1090-fa
                fi
            fi
        fi

        # enabling and starting the dump1090-fa service
        echo "Unmasking the dump1090-fa service..." >&2
        systemctl unmask dump1090-fa
        echo "Enabling the dump1090-fa service..." >&2
        systemctl enable dump1090-fa
        echo "Starting the dump1090-fa service..." >&2
        systemctl restart dump1090-fa


    ;;

    abort-upgrade|abort-remove|abort-deconfigure)
    ;;

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

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

if [ "$1" = "configure" ]; then db_stop; fi
exit 0