#!/bin/bash

export TEXTDOMAIN="zero-center"

MSG_INSTALLING=$(gettext "Installing")
MSG_INSTALLED=$(gettext "Installed")
MSG_REMOVING=$(gettext "Removing")
MSG_REMOVED=$(gettext "Removed")
MSG_FINISH_INSTALLED=$(gettext "has been INSTALLED in your system, and you can view the log in")
MSG_FINISH_SYSTEM1=$(gettext "has been")
MSG_FINISH_SYSTEM=$(gettext "in your system, and you can view the log in")




        function helper {
		#Aqui listaremos las opciones del helper
                if [ $1 = "--help" ] || [ $1 = "-h" ] || [ "$1" = "" ]; then
                        echo
                        echo "----ZERO-INSTALLER-HELPER----"
                        echo
                        echo "zero-installer <arg1> <arg2>"
                        echo
                        echo "arg1: Is the option to the package, install or remove"
                        echo "arg2: Is the package"
			echo "arg3: -d option, indicate if you want install the package with dpkg"
			echo
			echo "example: zero-installer install hotpotatoes"
			echo
			echo "--------------------------------------------"
			echo
			echo "You can install deb packages with dpkg"
			echo "if you define argument 1 like -d"
			echo
			echo "example 2: zero-installer -d /tmp/google.deb"
                        echo
			echo "--------------------------------------------"
			echo
                        echo "You can define package list in a file with 2 arguments, for apt"
			echo 
                        echo  "<arg1> <arg2>"
                        echo
			echo "<arg1> The name of package"
			echo "<arg> Instruction for package, install or remove"
			echo
			echo "zero-installer -l example.txt"
			echo
                        exit 0
                fi
        }
	
	
	
	function main {
		
		
		if [ "$1" == "-d" ]; then
			
			touch /tmp/zero-install.log
			NAME_PACK=$(echo $2 | rev | cut -d "/" -f1 | rev)			
			#En segundo plano realizaremos la instalacion del paquete almacenando su salida en nuestro log, eliminando nuestro fichero ayuda para salir del bucle.
			(dpkg -i $2 >> /tmp/zero-installer.log ; rm /tmp/zero-install.log) &
			echo "................................................................................." >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
			echo "Zero-center-------Your instruction is----------dpkg -i $2" >> /tmp/zero-installer.log
			echo "................................................................................." >> /tmp/zero-installer.log

			#Mientras que el fichero de ayuda existe es que estamos instalando
			#Cuando ya no exista saldremos del while
				while [ -f  "/tmp/zero-install.log" ]; do
					#En la variable PERCENT almacenamos el tanto por cien que llevamos de descarga
					#accediento a la ultima linea escrita en el fichero de ayuda y seleccionando solo el dato que necesitamos.
					VAR=$( tail -1 /tmp/zero-installer.log  2>/dev/null )
					#Hacemos echo de los datos que necesita el zenity
					echo "#$MSG_INSTALLING $2.......$VAR" | cut -c1-85
					#por ultimo entubamos la salida al zenity progress para que nos muestre el resultado en pantalla
				done | zenity --progress  --auto-close --pulsate --width 500 --title="Zero-Center-Installer" --no-cancel > /dev/null 2>&1
				
			echo "Zero-center-------Your package $NAME_PACK has been INSTALLED in your system"
			echo " " >> /tmp/zero-installer.log
			echo "Zero-center-------Your package $NAME_PACK has been INSTALLED in your system" >> /tmp/zero-installer.log
			echo "________________________________________________________________________________" >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
			su -c "notify-send -t 2000 -u critical -i /usr/share/icons/lliurex-neu/scalable/apps/zero-center.svg 'Zero-Installer' '$NAME_PACK $MSG_FINISH_INSTALLED /tmp/zero-installer.log'" $USER
			
			exit 0
		
		else
			#Creamos un fichero que nos servirá de ayuda para escribir y leer el tanto por cien del fichero descargado
			touch /tmp/zero-install.log
			
			INSTRUCCION=$1
			
			if [ "$INSTRUCCION" = "deinstall" ];then
				INSTRUCCION="remove"
			fi
			
			#En segundo plano realizaremos la instalacion del paquete almacenando su salida en nuestro log, eliminando nuestro fichero ayuda para salir del bucle.
			(apt-get $INSTRUCCION -y $2 >> /tmp/zero-installer.log ; rm /tmp/zero-install.log) &
			echo "................................................................................." >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
			echo "Zero-center-------Your instruction is----------apt-get $INSTRUCCION -y $2" >> /tmp/zero-installer.log
			echo "................................................................................." >> /tmp/zero-installer.log

			#Mientras que el fichero de ayuda existe es que estamos instalando
			#Cuando ya no exista saldremos del while
				while [ -f  "/tmp/zero-install.log" ]; do
					#En la variable PERCENT almacenamos el tanto por cien que llevamos de descarga
					#accediento a la ultima linea escrita en el fichero de ayuda y seleccionando solo el dato que necesitamos.
					VAR=$( tail -1 /tmp/zero-installer.log  2>/dev/null )
					#Hacemos echo de los datos que necesita el zenity
					echo "#$ACTION $2.......$VAR" | cut -c1-85
					#por ultimo entubamos la salida al zenity progress para que nos muestre el resultado en pantalla
				done | zenity --progress  --auto-close --pulsate --width 500 --title="Zero-Center-Installer" --no-cancel > /dev/null 2>&1
			
			echo "Zero-center-------Your package $2 has been $FINISHED in your system"
			echo " " >> /tmp/zero-installer.log
			echo "Zero-center-------Your package $2 has been $FINISHED in your system" >> /tmp/zero-installer.log
			echo "________________________________________________________________________________" >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
			su -c "notify-send -t 2000 -u critical -i /usr/share/icons/lliurex-neu/scalable/apps/zero-center.svg 'Zero-Installer' '$2 $MSG_FINISH_SYSTEM1 $FINISHED $MSG_FINISH_SYSTEM /tmp/zero-installer.log'" $USER
		fi
		}
	
	
	
	function check_removed {
		
		#Testeamos si el paquete esta instalado, no haciendo nada en el caso afirmativo o instalandolo en el caso negativo.
		TEST=$( dpkg-query -s $2 2> /dev/null| grep Status | cut -d " " -f 4 )
		if [ "$TEST" = 'installed' ]; then
			echo "Package $2 already installed, do nothing"
			echo "Package $2 already installed, do nothing" >> /tmp/zero-installer.log
			echo "________________________________________________________________________________" >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
		else
			main $1 $2			
		fi
		
	}
	
	function check_install {
		
		#Testeamos si el paquete esta quitado, no haciendo nada en el caso afirmativo o desinstalandolo en el caso negativo
		TEST=$( dpkg-query -s $2 2> /dev/null| grep Status | cut -d " " -f 4 )
		if [ "$TEST" != 'installed' ]; then
			echo "Package $2 already removed, do nothing"
			echo "Package $2 already removed, do nothing" >> /tmp/zero-installer.log
			echo "________________________________________________________________________________" >> /tmp/zero-installer.log
			echo " " >> /tmp/zero-installer.log
		else
			main $1 $2	
		fi
	
		
	}
	
        function check_package {
                
                if [ $1 = "install" ] ; then
			ACTION="$MSG_INSTALLING"
			FINISHED="$MSG_INSTALLED"
			check_removed $1 $2
		else
			ACTION="$MSG_REMOVING"
			FINISHED="$MSG_REMOVED"
			check_install $1 $2
		fi
	}
	
	
	function check_parameters {
              
		#En esta funcion testeamos los parametros para que ambos sean coherentes
		#Testeamos que el primer parámetro sea uno de los permitidos
                if [ "$1" != "install" -a "$1" != "remove"  -a "$1" != "deinstall" ] ;then
			echo "You define a wrong action for your package, please check it. Now abort zero-installer command" >> /tmp/zero-installer.log
                        helper -h
                fi
		#Testeamos el segundo parametro comprobando que existe en el repositorio, sino abortamos la instruccion.
		LANG=en apt-cache show $2 | grep -i Version
		if [ "$?" != "0" ]; then
			su -c "notify-send -t 2000 -u critical -i /usr/share/icons/lliurex-neu/scalable/apps/zero-center.svg 'Zero-Installer' 'Impossible to install $2, it dont exists in your repositories, abort zero-installer command'" $USER
			echo "Your package $2 don't exists in your repositories, abort zero-installer command"
			echo "Your package $2 don't exists in your repositories, abort zero-installer command" >> /tmp/zero-installer.log
			#su -c "notify-send -t 2000 -u critical -i /usr/share/icons/lliurex-neu/scalable/apps/zero-center.svg 'Zero-Installer' 'Your package $2 DO NOT EXISTS in your repositories, abort zero-installer command, and you can view the log in /tmp/zero-installer.log. If you cannot resolve the problem please contact with Lliurex Team at http://mestreacasa.gva.es/web/lliurex/forums'" $USER
			exit 1
		fi
	}
	
	
	function check_list {
	
		#Testeamos si el tercer parametro nos indica dpkg y lo lanzamos ya
		if [ "$1" == "-d" ]; then
			main "$1" "$2"
		fi
		
		#Compruebo que es una lista y si lo es la recorro linea a linea
		if [ "$1" = "-l"  ]; then
			oldIFS=$IFS     # conserva el separador de campo
			IFS=$'\n'
			for line in $(cat $2); do
				#En cada linea obtengo el paquete y la instruccion a realizar
				PACKAGE=$( echo "$line" | awk '1 { print  $1 }' )
				INSTRUCTION=$( echo "$line" | awk '1 { print  $2 }' )
				echo "You want $INSTRUCTION from your system this package, $PACKAGE"
				echo "You want $INSTRUCTION from your system this package, $PACKAGE" >> /tmp/zero-installer.log
				check_parameters $INSTRUCTION $PACKAGE
				check_package $INSTRUCTION $PACKAGE
			done
			IFS=$old_IFS
			exit 0
		fi			
	}
	
	
###################PROGRAMA PRINCIPAL#######################

#Log para el zero-center
if [ -f /tmp/zero-installer.log ]; then
	rm  /tmp/zero-installer.log
fi

echo " " >> /tmp/zero-installer.log
echo "------Zero-Installer-Resume--------" >> /tmp/zero-installer.log
echo "" >> /tmp/zero-installer.log
echo "If you detect any problem please contact with Lliurex Team lliurex@lliurex.net" >> /tmp/zero-installer.log
echo "Or submit it in http://mestreacasa.gva.es/web/lliurex/forums" >> /tmp/zero-installer.log
echo "" >> /tmp/zero-installer.log

#Dentro del programa principal lo primero que hago es mirar si es una lista	
check_list $1 $2
#Chequeo si los parametros son correctos
check_parameters $1 $2
#Chequeo si el paquete esta instalado o quitado y hago lo que se me pide, si no esta hecho de antes.
check_package $1 $2

exit 0