#!/bin/sh
# ============================================================================
#
# This file is part of the 'MetaRepository' package
# 
# This program is free software; you can redistribute it and/or modify it 
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# Author: Mijzelf <Mijzelf@live.com>
#
# ============================================================================
PKG_NAME="MetaRepository"
THIS_SCRIPT="postinst"
PKG_FIRMWARE=4

############################################################
## Check if we are in upgradig mode. From the point of view of the package
## an upgrade is a uninstall followed by a install. So if you want to preserve
## something over an upgrade, you have to detect it somehow
##
## Function sets PKG_UPGRADE > 0 when upgrading, 
## and PKG_UPGRADE=0 when not
############################################################
IsUpgrading()
{
	PKG_UPGRADING=0
	local dir=
	for dir in "/usr/local/zy_pkgs/" "/i-data/.system/zy-pkgs/"
	do
		local logfile=${dir}tmp/zypkg.log
		[ ! -f ${logfile} ] && continue

		local lastupdate=` grep "Upgrade Mode" ${logfile} | tail -n 1 | grep "\[${PKG_NAME}\]" | awk -v OFS=' ' '{print $1, $2}' `

	        [ "${lastupdate}" = "" ] && return 1

		local since1970=` TZ=GMT date -d "${lastupdate}" +%s `
		local now=`date +%s `
		local ago=""
		let ago=now-since1970
		[ $ago -eq 0 ] && ago=1
		[ 300 -gt $ago ] && PKG_UPGRADING=$ago && return 0

		return 1
	done

	# We shouldn't be here
	return 1
}

#############################################################
## Dummy logcode
#############################################################
Log() 
{
	return
}

IsUpgrading
Log ` [ $PKG_UPGRADING -gt 0 ] && echo upgrading `

PKG_ROOT="/usr/local/zy-pkgs"

PreserveFiles()
{
	local preserve_root=${PKG_ROOT}
	[ "` basename ${preserve_root} `" = "${PKG_NAME}" ] && preserve_root=` dirname ${preserve_root} `
	local preserve_tar=${preserve_root}/preserve.${PKG_NAME}.tar
	if [ -f ${preserve_tar} ] ; then
		PRESERVED_FOUND=1
		cd ${PKG_ROOT}
		tar xf ${preserve_tar}
		rm ${preserve_tar}
	fi
}

PreserveFiles


CheckForMedion()
{
	local medion=0	

	if [ -f /zyxel/mnt/info/modelid ] ; then
		case ` cat /zyxel/mnt/info/modelid `
		in
			A403*)
				medion=1
				;;
			A803*)
				medion=1
				;;
			AB03*)
				medion=1
				;;
		esac
	fi
	
	if [ $medion -eq 1 ] ; then
		sed -i "s|^PKG_MEDION=0|PKG_MEDION=1|" ${PKG_ROOT}/etc/init.d/${PKG_NAME}
		sed -i "s|^ftp://ftp2.zyxel.com/+|ftp://ftp2.zyxel.com/NSA310/4.40/zypkg/|" ${PKG_ROOT}/etc/${PKG_NAME}.conf 
	fi
}

CheckForMedion

# Check if multithreading is supported:
echo no >/tmp/ismultithreadingsupported

Filter()
{
	while read line
	do
		echo $line >/tmp/ismultithreadingsupported
	done
}

Check()
{
	sleep 3
	echo yes
}

Check | Filter &
wait

ismultithreadingsupported=` cat /tmp/ismultithreadingsupported `
rm cat /tmp/ismultithreadingsupported

[ "no" = "$ismultithreadingsupported" ] && sed -i "s|^ENABLE_MULTITHREADING=1|ENABLE_MULTITHREADING=0|" ${PKG_ROOT}/gui/${PKG_NAME}/ZYPKG_INFO.sh

. ${PKG_ROOT}/etc/${PKG_NAME}.conf

rm ${SCRATCH}/*.md5


infodir=/zyxel/mnt/info
[ -d firmware/mnt/info ] && infodir=/firmware/mnt/info
modelid=` cat ${infodir}/modelid `
fwversion=` cat ${infodir}/fwversion `

[ ${PKG_UPGRADING} -gt 0 ] && upgrading="-upgrading"

# Say hello to the author of this package. The requested file doesn't exist, 
# so wget will get a 404, but it will give a logline in my webserver logs.
wget -q -t 2 -T 2 "http://mijzelf.duckdns.org/hello_author.php?${PKG_NAME}${upgrading}-${modelid}-${fwversion}" -O - 2>/dev/null
exit 0