#!/bin/bash

# This program is Licensed under GPL 3.0 or higher
# Author: Angel Berlanas Vicente <aberlanas.gva@gmail.com>


# THE CHOSEN ONE METHOD
usage(){
   echo "Usage: ${0} ETHERNET" >&2
   exit 1
}

die(){

	echo ERROR: $@
	exit 1

}


# LIBFILES 
for LIB_FILE in "/usr/share/lliurex-express/lliurex-express-common.sh" "/usr/share/lliurex/lliurex-srv-common/server-netfuncs.sh" ; do
   [ -r "$LIB_FILE" ] || exit 1
   . $LIB_FILE
done

# Test if DNS_EXTRA_NS and DNS_EXTRA_DOMAINS
[ -x /usr/sbin/llxcfg-showvars ] || { echo "Not llxcfg-showvars present in system..."; exit 1; }
LIST_OF_VALUES_FROM_RUNTIME="DNS_EXTRA_NS DNS_EXTRA_DOMAINS SRV_NIC LLXCFG_IFACE"
eval $(/usr/sbin/llxcfg-showvars $LIST_OF_VALUES_FROM_RUNTIME)


# GETTEXT Values
TEXTDOMAIN="lliurex-express-server"
export TEXTDOMAIN
[ -z "$LANG" ] || LANGUAGE="${LANG}:${LANGUAGE}"


# Messages
MSG_TITLE_TEXT="$(gettext "Edit the fields you need")"
MSG_TITLE_WINDOW="$(gettext "LliureX Server Express")"
MSG_IP="$(gettext "IP")"
MSG_MASK="$(gettext "Mask")"
MSG_GATEWAY="$(gettext "Gateway")"
MSG_EXTRANS="$(gettext "Extra Nameserver")"
MSG_EXTRADOMAIN="$(gettext "Extra Domain")"
MSG_DHCP=$(gettext "DHCP")
MSG_QUESTION_DHCP="$(gettext "Do you want set automatically or manually  the IP details (IP, Netmask, Gateway)?")"
MSG_OK_DHCP_LABEL="$(gettext "Automatic (by default)")"
MSG_CANCEL_DHCP_LABEL="$(gettext "Manual")"

# Some Default Values
DEFAULT_ETH="eth0"
DEFAULT_ICON_FOR_ZENITY="/usr/share/icons/Human/scalable/categories/redhat-internet.svg"
DEFAULT_WIDTH="500"
STATUS_OF_THE_ART=""
ETH_STATUS=""
LIST_OF_ETHS_TEXT=""


# The Main Program

show_ip_question_set_automatically(){


	rc=0 
	# Show Message	
	IS_EXTERNAL_DHCP_LIVING_UNDER_DHCP=$(zenity --width="$DEFAULT_WIDTH" --question --text="$MSG_QUESTION_DHCP" --ok-label="$MSG_OK_DHCP_LABEL" --cancel-label="$MSG_CANCEL_DHCP_LABEL")
	rc=$?

	# DHCP or MANUAL .... that's the question
	if [ $rc -eq 0 ] ; then
		ETH_STATUS="AUTO"		
	else 
		ETH_STATUS="MANUAL"
	fi



}


replenish_values(){

	BASE_LIST="$IP $MASK $EXTRANS $EXTRADOMAIN" 

	LIST_OF_ETHS_TEXT="$BASE_LIST"
}

show_zenity(){
   rc=0
   STATUS_OF_THE_ART=$(zenity --width="$DEFAULT_WIDTH"  --list  --editable  --column=" $MSG_IP    " --column="  $MSG_MASK  "  --column="  $MSG_EXTRANS  " --column="  $MSG_EXTRADOMAIN   " $LIST_OF_ETHS_TEXT --print-column="ALL" --text="$MSG_TITLE_TEXT" --title="$MSG_TITLE_WINDOW" --window-icon="$DEFAULT_ICON_FOR_ZENITY" ) || rc=$?

   if [ $rc -eq 0  -a -z "$STATUS_OF_THE_ART" ] ; then

	STATUS_OF_THE_ART="$IP|$MASK|$EXTRANS|$EXTRADOMAIN"

   fi
	return 0
}


# Some usefull tests!
IFACE=$1
# Is empty?
{ [ "$IFACE" ] && is_ethernet_card "$IFACE" ; }|| usage
# Is a ethernet card?
#is_ethernet_card "$IFACE" || usage
# Ok, I'm glad i, continue please...

# Replenish Values
IP=$(get_current_ip "$IFACE")
MASK=$(get_current_netmask "$IFACE")
EXTRANS=$DNS_EXTRA_NS
EXTRADOMAIN=$DNS_EXTRA_DOMAINS

shift 1

while [ $# -ge 1 ] ; do
      case $1 in
                -ip)
			[ -z "$2" ]
			IP="$2"
			shift 2
			;;
		-mask)
			[ -z "$2" ]
			MASK="$2"
			shift 2
			;;
		-ns)
			[ -z "$2" ]
			EXTRANS="$2"
			shift 2
			;;
		-domain)
			[ -z "$2" ]
			EXTRADOMAIN="$2"
			shift 2
			;;
		*)
			usage
			;;	
	esac

done

show_ip_question_set_automatically

if [ "$ETH_STATUS" = "AUTO" ] ; then

	fix_interfaces "$IFACE"
	llxcfg-nm --force erradicate
	llxcfg-nm --force replenish
	
	# Workaround to disable the Evil NetworkManager Forever and ever.

	LIVING_UNDER_CASPER="$(llxcfg-bootvar boot)"
	
	if [ "$LIVING_UNDER_CASPER" = "casper" ]; then

		for p in nm-system-settings NetworkManager ; do

			killall "$p" || true

		done 	

	fi
		
	llxcfg-nm update
	exit 0

fi



replenish_values
show_zenity
if [ -z "$STATUS_OF_THE_ART" ] ; then

	echo "nothing to do"	
	exit 0

else
	NEW_IP="$(echo $STATUS_OF_THE_ART|cut -d "|" -f1)"
	NEW_MASK="$(echo $STATUS_OF_THE_ART|cut -d "|" -f2)"
	NEW_EXTRANS="$(echo $STATUS_OF_THE_ART|cut -d "|" -f3)"
	NEW_EXTRADOMAIN="$(echo $STATUS_OF_THE_ART|cut -d "|" -f4)"
	
	# Some aditional checkers
	if [ "$NEW_IP" != "$(get_current_ip "$IFACE")" -o "$NEW_MASK" != "$(get_current_netmask "$IFACE")" ];then
		lliurex-net is_valid_ip "$NEW_IP" "$NEW_MASK" || exit 1				
	
	fi
	
	if [ -z "$NEW_EXTRANS" ] ; then
	
		llxcfg-setvars DNS_EXTRA_NS="$NEW_EXTRANS"
	
	fi 
	
	if [ -z "$NEW_EXTRADOMAIN" ] ; then
	
		llxcfg-setvars DNS_EXTRA_DOMAINS="$NEW_EXTRADOMAIN"

	fi	
	

	# Finally fix the /etc/network/interfaces
	set_interfaces "$IFACE" "$NEW_IP" "$NEW_MASK"
	llxcfg-nm --force erradicate
	llxcfg-nm --force replenish
	
	# Workaround to disable the Evil NetworkManager Forever and ever.

	LIVING_UNDER_CASPER="$(llxcfg-bootvar boot)"
	
	if [ "$LIVING_UNDER_CASPER" = "casper" ]; then

		for p in nm-system-settings NetworkManager ; do

			killall "$p" || true

		done 	

	fi
		
	llxcfg-nm update
	




fi 



exit 0