#!/bin/sh

ZAF_CFG_FILE="/etc/zaf.conf"
if [ -f $ZAF_CFG_FILE ]; then
	. $ZAF_CFG_FILE
else
	echo "Missing config file $ZAF_CFG_FILE! Exiting."
	exit 2
fi

# Read options as config for ZAF
for pair in "$@"; do
    echo $pair | grep -q '^ZAF\_' || continue
    option=$(echo $pair|cut -d '=' -f 1)
    value=$(echo $pair|cut -d '=' -f 2-)
    eval "${option}='$value'"
done

[ -z "$ZAF_TMP_BASE" ] && ZAF_TMP_BASE=/tmp/zaf
ZAF_TMP_DIR="${ZAF_TMP_BASE}-${USER}"
[ -z "$ZAF_DEBUG" ] && ZAF_DEBUG=1
export ZAF_DEBUG

# If debug is on, do not remove tmp dir 
if [ "$ZAF_DEBUG" -le 3 ]; then
	trap "rm -rif ${ZAF_TMP_DIR}" EXIT
fi

! [ -d "${ZAF_TMP_DIR}" ] && mkdir "${ZAF_TMP_DIR}"
! [ -d "${ZAF_CACHE_DIR}" ] && mkdir "${ZAF_CACHE_DIR}"

if [ -f ./lib/zaf.lib.sh ]; then
. ./lib/zaf.lib.sh
. ./lib/os.lib.sh
. ./lib/ctrl.lib.sh
. ./lib/cache.lib.sh
. ./lib/zbxapi.lib.sh
[ -f ./lib/zaf.${ZAF_OS}.sh ] && . ./lib/zaf.${ZAF_OS}.sh
else 
. ${ZAF_LIB_DIR}/zaf.lib.sh
. ${ZAF_LIB_DIR}/os.lib.sh
. ${ZAF_LIB_DIR}/ctrl.lib.sh
. ${ZAF_LIB_DIR}/cache.lib.sh
. ${ZAF_LIB_DIR}/zbxapi.lib.sh
[ -f ${ZAF_LIB_DIR}/zaf.${ZAF_OS}.sh ] && . ${ZAF_LIB_DIR}/zaf.${ZAF_OS}.sh
fi

zaf_shift(){
	local s

	if echo $1 |grep -q "="; then
		if echo $2 |grep -q "="; then
			if echo $3 |grep -q "="; then
				s=3
			else
				s=2
			fi
		else
			s=1
		fi
	else
		s=0
	fi
	echo $s
}

case $1 in

check-agent-config)
	zaf_check_agent_config
	;;

update)
	zaf_wrn "Updating repository ${ZAF_REPO_GITURL}..."
	zaf_update_repo
	;;
upgrade)
	ZAF_DEBUG=$ZAF_DEBUG $0 reinstall $(zaf_list_plugins)
	;;
show)
	shift;
	shift $(zaf_shift "$@")
	if [ -z "$1" ]; then
		zaf_list_plugins | while read plugin; do
			zaf_plugin_info $ZAF_PLUGINS_DIR/$plugin/control.zaf
		done
	else
		if zaf_list_plugins | grep -q "^$1"; then
			[ -f $ZAF_PLUGINS_DIR/$1/control.zaf ] && zaf_plugin_info $ZAF_PLUGINS_DIR/$1/control.zaf || zaf_err "Plugin $1 not installed."
		else
			if echo $1 |grep -q ^http; then
				zaf_prepare_plugin "$1" "$ZAF_TMP_DIR/plugin"
				zaf_plugin_info "$ZAF_TMP_DIR/plugin/control.zaf"
			else
				zaf_err "Plugin $1 not installed."
			fi
		fi
	fi
	;;

plugins)
	zaf_list_plugins
	;;

items)
	shift
	shift $(zaf_shift "$@")
	if [ -z "$1" ]; then
		zaf_list_items
	else
		zaf_list_plugin_items "$1"
	fi
	;;

test)
	shift
	shift $(zaf_shift "$@")
	if echo $1|grep -q '\.'; then
		zaf_test_item "$1"
		exit
	fi
	if [ -n "$1" ]; then
		plugins="$@"
	else
		plugins="$(zaf_list_plugins)"
	fi
	for p in $plugins; do
		! zaf_is_plugin $p && zaf_err "Unknown plugin $p"
		for i in $(zaf_list_plugin_items $p); do 
			echo $i: $(zaf_test_item $i)
		done
	done
	;;
get)
	shift
	shift $(zaf_shift "$@")
	if echo $1|grep -q '\.'; then
		zaf_get_item "$1"
		exit
	fi
	if [ -n "$1" ]; then
		plugins="$@"
	else
		plugins="$(zaf_list_plugins)"
	fi
	for p in $plugins; do
		for i in $(zaf_list_plugin_items $p); do 
			echo $i: $(zaf_get_item $i)
		done
	done
	;;
install)
	shift
	shift $(zaf_shift "$@")
	[ -z "$1" ] && echo "$0 install plugin [plugin]..."
	for p in $@; do
		if zaf_is_plugin "$p"; then
			zaf_wrn "Plugin $p already installed. Skipping installation."
			continue
		fi
		zaf_install_plugin "$p"
		installed=1
	done
	[ -n "$installed" ] && zaf_is_root && zaf_restart_agent
	;;

reinstall)
	shift
	shift $(zaf_shift "$@")
	[ -z "$1" ] && echo "$0 reinstall plugin [plugin]..."
	for p in $@; do
		if zaf_is_plugin "$p"; then
			zaf_remove_plugin "$(basename $p)"
			reinstalled=1
		fi
		zaf_install_plugin "$p"
		reinstalled=1
	done
	[ -n "$reinstalled" ] && zaf_is_root && zaf_restart_agent
	;;

remove)
	shift
	shift $(zaf_shift "$@")
	[ -z "$1" ] && echo "$0 remove plugin [plugin]..."
	for p in $@; do
		if zaf_is_plugin "$p"; then
			zaf_remove_plugin "$p"
			removed=1
		fi
	done
	[ -n "$removed" ] && zaf_is_root && zaf_restart_agent
	;;

self-upgrade)
	shift
	shift $(zaf_shift "$@")
	[ -z "$1" ] && auto=auto
	zaf_os_specific zaf_check_deps zaf && zaf_err "Zaf is installed as system package. Cannot self-upgrade."
	rm -rf /tmp/zaf-installer && mkdir /tmp/zaf-installer
	if ! which curl >/dev/null;
	then
		zaf_err "Curl not found. Cannot continue. Please install it."
	fi
	zaf_fetch_url $ZAF_RAW_URL/$ZAF_VERSION/install.sh | exec sh -s $auto "$@"
	exit
	;;
	
self-remove)
	shift
	shift $(zaf_shift "$@")
	zaf_os_specific zaf_check_deps zaf && zaf_err "Zaf is installed as system package. Cannot self-remove."
	. /etc/zaf.conf
	if [ "$1" = "force" ]; then
	  rm -rf /etc/zaf.conf ${ZAF_PLUGINS_DIR} ${ZAF_REPO_DIR} ${ZAF_LIB_DIR} \
		${ZAF_BIN_DIR}/zaf ${ZAF_AGENT_CONFIGD}/zaf_*
	else
	  echo "This will remove zaf from this computer and erase all configuration."
	  echo "This command will be executed:"
	  echo "rm -rf /etc/zaf.conf ${ZAF_PLUGINS_DIR} ${ZAF_REPO_DIR} ${ZAF_LIB_DIR} \
		${ZAF_BIN_DIR}/zaf ${ZAF_AGENT_CONFIGD}/zaf_*"
	  echo 
	  echo "To continue, please do $0 self-remove force"
	fi
      	;;

api)
	zaf_zbxapi_login
	case $2 in
	hostid)
		zaf_zbxapi_gethostid "$3"
		;;
	host)
		zaf_zbxapi_gethost "$3"
		;;	
	hostgroupid)
		zaf_zbxapi_gethostgroupid "$3"
		;;	
	hosts)
		gid=$(zaf_zbxapi_gethostgroupid "$3")
		zaf_zbxapi_gethostsingroup $gid
		;;
	backup-group)
		gid=$(zaf_zbxapi_gethostgroupid "$3")
		hosts=$(zaf_zbxapi_gethostsingroup $gid)
		zaf_wrn "Will backup this hosts: $hosts"
		for h in $hosts; do
			hn=$(zaf_zbxapi_gethost $h)
			zaf_wrn "Exporting host $hn($h)..."
			zaf_zbxapi_backuphost $h >$hn.xml
		done
		;;
	backup-host)
		hostid=$(zaf_zbxapi_gethostid "$3")
		zaf_wrn "Exporting host $3($hostid)..."
		zaf_zbxapi_backuphost $hostid
		;;
	*)
		echo "$0 api command [parameters]"
		echo "hostid 'host'			Get hostid from hostname"
		echo "host 'hostid'			Get hostname from hostid"
		echo "hostgroupid 'hostgroup'		Get hostgroup id from hostgroup"
		echo "hosts 'hostgroup'			Get hosts in group"
		echo "backup-group 'hostgroup' [dir]	Backup all hosts in group (get their config from zabbix and save to dir/hostname.xml)" 
		echo "backup-host 'host'		Backup host (get config from zabbix to stdout)"
		echo
		exit
		;;
	esac
	;;

*)
	echo "$0 Version ${ZAF_VERSION}. Please use some of this commands:"
	echo "$0 Cmd [ZAF_OPTION=value] ..."
	echo "Commands:"
	echo "$0 update			To update repo (not plugins, similar to apt-get update)"
	echo "$0 upgrade		To upgrade installed plugins from repo" 
	echo "$0 plugins		To list installed plugins"
	echo "$0 show [plugin]		To show installed plugins or plugin info"
	echo "$0 items [plugin]		To list all suported items [for plugin]"
	echo "$0 test [plugin[.item]]	To test [all] suported items by zabbix_agentd [for plugin]"
	echo "$0 get [plugin[.item]]	To test [all] suported items by zabbix_get [for plugin]"
	echo "$0 install plugin		To install plugin"
	echo "$0 remove plugin		To remove plugin" 
	echo "$0 api			To zabbix API functions. See $0 api for more info."
	echo "$0 self-upgrade		To self-upgrade zaf"
	echo "$0 self-remove		To self-remove zaf and its config"
	echo
	;;

esac