#
# Esegue controllo meteo tramite servizio online configurato in WEATHER_SERVICE
#
function check_rain_online {

	if [ "$WEATHER_SERVICE" == "none" ]; then
		log_write "rain" "warning" "check_rain_online - online service is disabled"
		return
	fi

	trigger_event "check_rain_online_before" ""

	local local_epoch=`drv_rain_online_get $WEATHER_SERVICE`
	local current_state_rain_online=""
	local last_state_rain_online=`cat "$STATUS_DIR/last_state_rain_online" 2> /dev/null`
	local weather="null"

	if [[ $local_epoch =~ ^-?[0-9]+$ ]]; then
		if [ $local_epoch -eq 0 ]; then
			log_write "rain" "error" "check_rain_online - failed read online data"
		else
			if [ $local_epoch -gt 0 ]; then
				current_state_rain_online='rain'
				echo $local_epoch > "$STATUS_DIR/last_rain_online"
			else
				current_state_rain_online='norain'
			fi
			weather=$(cat "$STATUS_DIR/last_weather_online" | $JQ -M ".weather")
			
			log_write "rain" "info" "check_rain_online - weather=$weather, local_epoch=$local_epoch"
			if [ "$current_state_rain_online" != "$last_state_rain_online" ]; then
				echo "$current_state_rain_online" > "$STATUS_DIR/last_state_rain_online"
				trigger_event "check_rain_online_change" "$current_state_rain_online" "$weather"
			fi
		fi
	else
		log_write "rain" "error" "check_rain_online - failed read online data"
	fi

	trigger_event "check_rain_online_after" "$current_state_rain_online" "$weather"
}




#
# Controlla se se piove tramite sensore
#
function check_rain_sensor {

	if [ -n "$RAIN_GPIO" ]; then 
		trigger_event "check_rain_sensor_before" ""
		local current_state_rain_sensor=""
		local last_state_rain_sensor=`cat "$STATUS_DIR/last_state_rain_sensor" 2> /dev/null`
		local s=`drv_rain_sensor_get $RAIN_GPIO`
		if [ "$s" = "$RAIN_GPIO_STATE" ]; then
			current_state_rain_sensor='rain'
			local local_epoch=`date +%s`
			echo $local_epoch > "$STATUS_DIR/last_rain_sensor"
			log_write "rain" "info" "check_rain_sensor - now it's raining ($local_epoch)"
			#return $local_epoch	
		else
			current_state_rain_sensor='norain'
			log_write "rain" "info" "check_rain_sensor - now is not raining"
		fi
		if [ "$current_state_rain_sensor" != "$last_state_rain_sensor" ]; then
			echo "$current_state_rain_sensor" > "$STATUS_DIR/last_state_rain_sensor"
			trigger_event "check_rain_sensor_change" "$current_state_rain_sensor"
		fi
		trigger_event "check_rain_sensor_after" "$current_state_rain_sensor"
	else
		log_write "rain" "warning" "Rain sensor not present"
	fi

}

#
# Chiude tutte le elettrovalvole se sta piovendo oppure chiude quelle che hanno raggiunto l'mudità massima impostata
# Eseguie il controllo in tempo reale sul sensore hardware e sui dati dell'ultima chiamata eseguita online
#
function close_all_for_rain {

	#
	# Chiude le elettrovalvole che hanno raggiunto l'umidità del terreno impostata in EVx_SENSOR_MOISTURE
	#

	for i in $(seq $EV_TOTAL)
	do
		local a=EV"$i"_ALIAS
		local al=${!a}
		ev_status $al
		local state=$?
		local moisture=$(ev_check_moisture_autoclose $i)
		if [ "$state" = "1" ] && [ "$moisture" -gt 0 ]; then
			ev_close $al
			log_write "irrigate" "warning" "close_all_for_rain - Close solenoid '$al' because maximum soil moisture has been reached"
		fi
	done

	#
	# Chiude le elettrovalvole in caso di pioggia
	#

	local close_all=0
	local now=`date +%s`

	if [[ "$NOT_IRRIGATE_IF_RAIN_ONLINE" -gt 0 && -f $STATUS_DIR/last_rain_online ]]; then
		local last_rain=`cat $STATUS_DIR/last_rain_online`
		local dif=0
		let "dif = now - last_rain"
		if [ $dif -lt $NOT_IRRIGATE_IF_RAIN_ONLINE ]; then
			close_all=1
		fi
	fi

	if [[ "$NOT_IRRIGATE_IF_RAIN_SENSOR" -gt 0 && -f $STATUS_DIR/last_rain_sensor ]]; then
		local last_rain=`cat $STATUS_DIR/last_rain_sensor`
		local dif=0
		let "dif = now - last_rain"
		if [ $dif -lt $NOT_IRRIGATE_IF_RAIN_SENSOR ]; then
			close_all=1
		fi
	fi

	if [ "$close_all" = "1" ]; then

		#
		# PIOVE 
		# Valuta se la sciare aperte le elettrovalvole in caso l'umidità del sensore non sia stata raggiunta
		#

		for i in $(seq $EV_TOTAL)
		do
			local a=EV"$i"_ALIAS
			local al=${!a}
			local a=EV"$i"_NORAIN
			local evnorain=${!a}
			ev_status $al
			local state=$?
			local moisture=$(ev_check_moisture $i)
			#echo "$al = $state"
			if [ "$state" = "1" ] && [ "$evnorain" != "1" ] && [ "$moisture" -ne 0 ]; then
				ev_close $al
				log_write "irrigate" "warning" "close_all_for_rain - Close solenoid '$al' for rain"
			fi
		done

	fi


}

#
# Mostra il timestamp dell'ultima pioggia rilevato dal sensore
#
function last_rain_sensor_timestamp {
	cat "$STATUS_DIR/last_rain_sensor" 2> /dev/null
}

#
# Mostra il timestamp dell'ultima pioggia rilevato dal servizio online
#
function last_rain_online_timestamp {
	cat "$STATUS_DIR/last_rain_online" 2> /dev/null
}

#
# Resetta il timestamp dell'ultima pioggia rilevato dal sensore
#
function reset_last_rain_sensor_timestamp {
	trigger_event "reset_last_rain_sensor_timestamp_before" ""
	rm "$STATUS_DIR/last_rain_sensor" 2> /dev/null
	trigger_event "reset_last_rain_sensor_timestamp_after" ""
	log_write "rain" "info" "reset_last_rain_sensor_timestamp"
}

#
# Resetta mostra il timestamp dell'ultima pioggia rilevato dal servizio online
#
function reset_last_rain_online_timestamp {
	trigger_event "reset_last_rain_online_timestamp_before" ""
	rm "$STATUS_DIR/last_rain_online" 2> /dev/null
	trigger_event "reset_last_rain_online_timestamp_before" ""
	log_write "rain" "info" "reset_last_rain_online_timestamp"
}