#!/bin/bash


ACTION="$1"
PKG="$2"

USER=$(id -un $PKEXEC_UID)
USERHOME=$(sudo -u $USER sh -c 'echo $HOME')
BINDIR=$USERHOME"/.local/bin"
DESTDIR=$BINDIR"/telegram"
DESTDOWNLOAD="/var/cache/epi-downloads"
DESTDESKTOP=$USERHOME"/.local/share/applications/zero-lliurex-telegram.desktop"


TCH_URL="https://desktop.telegram.org/changelog"
TVERSION=$(wget -qO- $TCH_URL | sed -e 's/<[^>]*>//g;/^\s*$/d' | grep -o 'v [0-9.]*' -m1 | cut -d ' ' -f2)

if [[ $(arch) == "x86_64" ]]
then
	TSETUP="tsetup.${TVERSION}.tar.xz"
	TURL="https://telegram.org/dl/desktop/linux/"
else
	TSETUP="tsetup32.${TVERSION}.tar.xz"
	TURL="https://telegram.org/dl/desktop/linux32/"
fi


case $ACTION in

	getStatus)
		case $PKG in
			telegram)
				if [ -d ${DESTDIR} ]; then
					echo 0
				else
					echo 1
				fi
			;;
		esac						
	;;

	download)
		
		cd ${DESTDOWNLOAD}

		if [ -s ${DESTDOWNLOAD}"/"${TSETUP} ]
		then
			rm -f ${DESTDOWNLOAD}"/"${TSETUP}
		fi

		wget ${TURL}${TSETUP}
		
		if ! [ -s ${DESTDOWNLOAD}"/"${TSETUP} ]
		then	
			exit 1
		fi	
	;;	
	
	installPackage)

		if ! [ -d $BINDIR ]
		then
			mkdir $BINDIR
		fi
			 
		if ! [ -d $DESTDIR ]
		then
			echo $DESTDIR
			mkdir $DESTDIR
		fi	

		echo "Unzipping file..."
		
		FIRSTPWD=$PWD
		cd $DESTDOWNLOAD
		tar -Jxf $TSETUP -C $DESTDIR
 		USER_GR=$(id -g -n ${USER})
		chown -R ${USER}:"${USER_GR}" $BINDIR
		
		if [ $? -eq 0 ]
		then	
			cd $FIRSTPWD
			echo "Launching telegram..."
			su -c /usr/bin/telegram $USER &
		else
			rm -r $DESTDIR
			exit 1
		fi
		
	;;

	remove)
		
		echo "Removing files..."
		if [ -d $DESTDIR ]
		then
			rm -rf $DESTDIR
		fi	

		if [ -f $DESTDESKTOP ]
		then
			rm -f $DESTDESKTOP
		fi	 
	;;		
		
esac
exit 0