#!/bin/bash
set -e

. /etc/wb_env.sh

wb_source "of"

if of_machine_match "wirenboard,wirenboard-8xx"; then
    CONF_SUFFIX="wb8"
elif of_machine_match "wirenboard,wirenboard-74x"; then
    CONF_SUFFIX="wb74"
elif of_machine_match "wirenboard,wirenboard-720"; then
    CONF_SUFFIX="wb7"
elif of_machine_match "contactless,imx6ul-wirenboard60"; then
    CONF_SUFFIX="wb6"
elif of_machine_match "contactless,imx28-wirenboard50"; then
    CONF_SUFFIX="wb5"
else
    CONF_SUFFIX="default"
fi
BOARD_CONF="/usr/share/wb-mqtt-homeui/config.${CONF_SUFFIX}.json"
CONFFILE="/etc/wb-webui.conf"

function convert_config()
{
    TMPFILE=`mktemp`
    mqtt-get-dump "/config/#" > $TMPFILE
    NEW_CONFFILE=`mktemp`
    /usr/lib/wb-mqtt-homeui/convert_config_v1v2 $TMPFILE $NEW_CONFFILE
    if [ -e $CONFFILE ] && ! `cmp --silent $CONFFILE $NEW_CONFFILE`; then
        mv $CONFFILE $CONFFILE.bak
    fi
    mv $NEW_CONFFILE $CONFFILE            
    rm $TMPFILE
}

function install_default_config()
{
    ucf --debconf-ok $BOARD_CONF $CONFFILE
}

function is_config_untouched()
{
    for fname in $(ls /usr/share/wb-mqtt-homeui/config.*.json); do
        diff -q $CONFFILE $fname && return 0
    done
    return 1
}

case "$1" in
    configure)

        OLD_VERSION="$2"
        if [ "$OLD_VERSION" = "" ]; then
            # fresh install
            # if conffile (i.e. v2) is present, do nothing
            if [ ! -e "$CONFFILE" ]; then
                #check if old config is present
                if [ ! `mqtt-get-dump '/config/#' | wc -l` = "0" ]; then
                    convert_config
                else
                    install_default_config
                fi
            fi
        else
            if `dpkg --compare-versions "${OLD_VERSION}" "lt" "2.0~beta9"`; then
                convert_config
            else
                if is_config_untouched; then
                    cp $BOARD_CONF $CONFFILE
                else
                    install_default_config
                fi
            fi
        fi
    ;;
esac




exit 0