#!/bin/bash

#filename="duo/ap2nc-024310-048-20150507_original.deb"
filename="duo/ap2nc-024310-048-20210628-hotfix1.deb"
master_package_name="ap2nc"

version_current=`echo "02.43.10-048" | tr -d .-`
version_newfile=`dpkg -f ${filename} Version`
version_newfile=`echo ${version_newfile} | tr -d .-`
package_newfile=`dpkg -f ${filename} Package`
# extract master package and update-container names
master_package_new=${package_newfile%%-*}
update_container=${package_newfile#*-}
update_container=${update_container%%-*}


version_newfile="024310048"
version_newfile="024310047"


[ "${master_package_name}" == "${update_container}" ] && update_container=''

echo "version_current=$version_current"
echo "version_newfile=$version_newfile"
echo "package_newfile=$package_newfile"
echo "master_package_name=$master_package_name"
echo "master_package_new=$master_package_new"
echo "update_container=$update_container"


# declare arithmetic variable types (ensure conversion to base 10)
let "vnew = $((10#$version_newfile))"
let "vnow = $((10#$version_current))"
# enforce same 'master-package' name
if [ "${master_package_name}" != "${master_package_new}" ]; then
        error="failed 200 \"invalid firmware package\" 1"
	echo $error
fi
# ITR#34229: don't allow down rev code to be applied
# -but allow 'patch updates" with any version
if [ -z "${update_container}" ] && [ "${vnew}" -lt "${vnow}" ]; then
        error="failed 200 \"invalid firmware package\" 2"
	echo $error
fi

echo "GO!!!"