#!/bin/sh
# ============================================================================
#
# This file is part of the 'Tweaks' 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="Tweaks"
THIS_SCRIPT="postinst"
PKG_VERSION="20180814zypkg032"
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

CopyDesktopIcons()
{
	local pkgdir=/i-data/sysvol/.system/zy-pkgs
	if [ -d ${pkgdir} ] ; then
		pkgdir=${pkgdir}/pkggui
		for file in /Tweaks/icons/active.png /Tweaks/icons/notactive.png  /Tweaks/Tweaks.css
		do
			mkdir -p $( dirname ${pkgdir}${file} )
			cp ${PKG_ROOT}/gui${file} ${pkgdir}${file}
		done
	fi
}

CopyDesktopIcons

PKG_MEDION=0
 
if [ -f /zyxel/mnt/info/modelid ] ; then
	case ` cat /zyxel/mnt/info/modelid `
	in
		A403*)
			PKG_MEDION=1
			;;
		A803*)
			PKG_MEDION=1
			;;
		AB03*)
			PKG_MEDION=1
			;;
	esac
fi
	
[ $PKG_MEDION -eq 1 ] && sed -i "s|^PKG_MEDION=0|PKG_MEDION=1|" ${PKG_ROOT}/etc/init.d/${PKG_NAME}

# TODO
# Add your own code
infodir=/zyxel/mnt/info
[ -d /firmware/mnt/info ] && infodir=/firmware/mnt/info
model=unknown
[ -f /etc/modelname ] && model=` head -n 1 /etc/modelname `
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}-${model}-${modelid}-${fwversion}" -O - 2>/dev/null
exit 0