#!/bin/sh
POE="$(uci -q get event-handler.@event-handler[0].poe_gpio)"
USB="$(uci -q get event-handler.@event-handler[0].usb_gpio)"
HEAT="$(uci -q get event-handler.@event-handler[0].heat_gpio)"
WD="$(uci -q get event-handler.@event-handler[0].wd_gpio)"
LOG=/etc/event_log
int=$1

while true; do
	touch $LOG
	DATE=$(date)
	INTS_MASK=$(cat /sys/class/i2c-dev/i2c-0/device/0-0011/int_sum)

	# poe out power error int
	if [[ "$(echo $((INTS_MASK & 1)))" == "1" ]]; then
		VALUE=$(cat /sys/class/gpio/gpio$POE/value)
		if [[ "$VALUE" == "1" ]]; then
			echo "$DATE: ${int:+$int: }poe: Warning! The maximum current limit on the PoE-OUT output has been exceeded." >> $LOG
		else
			echo "$DATE: ${int:+$int: }poe: The PoE-OUT output current has been restored to normal values after exceeding the maximum thresholds." >> $LOG
		fi
	fi

	# usb power error int
	if [[ "$(echo $((INTS_MASK & 2)))" == "2" ]]; then
		VALUE=$(cat /sys/class/gpio/gpio$USB/value)
		if [[ "$VALUE" == "1" ]]; then
			echo "$DATE: ${int:+$int: }usb: Warning! The maximum current limit for the USB has been exceeded." >> $LOG
		else
			echo "$DATE: ${int:+$int: }usb: The USB current has been restored to normal values after exceeding the maximum threshold." >> $LOG
		fi
	fi

	# heat int
	if [[ "$(echo $((INTS_MASK & 4)))" == "4" ]]; then
		VALUE=$(cat /sys/class/gpio/gpio$HEAT/value)
		if [[ "$VALUE" == "1" ]]; then
			echo "$DATE: ${int:+$int: }heat: The device heating circuit is enabled." >> $LOG
		else
			echo "$DATE: ${int:+$int: }heat: The device heating circuit is disabled." >> $LOG
		fi
	fi

	# wd toggle int
	if [[ "$(echo $((INTS_MASK & 8)))" == "8" ]]; then
		VALUE=$(cat /sys/class/gpio/gpio$WD/value)
	fi

	# voltage threshold int
	if [[ "$(echo $((INTS_MASK & 16)))" == "16" ]]; then
		input_voltage="$(cat /sys/class/i2c-dev/i2c-0/device/0-0011/input_voltage)"
		voltage_threshold="$(cat /sys/class/i2c-dev/i2c-0/device/0-0011/voltage_threshold)"
		poe_out_power_gpio="$(uci -q get powersupply.system.poe_out_power_gpio)"
		if [[ "$input_voltage" -lt "$voltage_threshold" ]]; then
			echo 0 > /sys/class/gpio/gpio$poe_out_power_gpio/value
			echo "$DATE: ${int:+$int: }voltage: PoE-OUT power supply is disabled. The input voltage is below the required threshold of $voltage_threshold mV DC. Current voltage: $input_voltage mV." >> $LOG
		fi
	fi

	if [[ "$(wc -l < $LOG)" -ge "100" ]]; then
		mv $LOG $LOG.old
	fi

	if [[ -n "$int" ]]; then
		break
	fi

	sleep 1
done

exit 0