#!/bin/sh

. /etc/openwrt_release

CPUINFO_PATH="/proc/cpuinfo"
CPUFREQ_PATH="/sys/devices/system/cpu/cpufreq"
THERMAL_PATH="/sys/class/thermal"

cpu_arch="$(awk -F ': ' '/model name/ {print $2}' "$CPUINFO_PATH" | head -n1)"
[ -n "${cpu_arch}" ] || cpu_arch="$(uname -m)"

case "$DISTRIB_TARGET" in
"x86"/*)
	cpu_cores="$(grep "core id" "$CPUINFO_PATH" | sort -u | wc -l)C $(grep -c "processor" "$CPUINFO_PATH")T" ;;
*)
	cpu_cores="$(grep -c "processor" "$CPUINFO_PATH")" ;;
esac

case "$DISTRIB_TARGET" in
"bcm27xx"/*)
	cpu_freq="$(( $(vcgencmd measure_clock arm | awk -F '=' '{print $2}') / 1000000 ))Mhz" ;;
"bcm53xx"/*)
	cpu_freq="$(nvram get clkfreq | awk -F ',' '{print $1}')MHz" ;;
"mvebu"/*)
	cpu_freq="$(awk -F ': ' '/BogoMIPS/ {print $2}' "$CPUINFO_PATH" | head -n1)MHz" ;;
"x86"/*)
	cpu_freq="$(awk -F ': ' '/MHz/ {print $2}' "$CPUINFO_PATH" | head -n1)MHz"
	;;
*)
	[ ! -e "$CPUFREQ_PATH/policy0/cpuinfo_cur_freq" ] || \
		cpu_freq="$(awk '{printf("%.fMHz", $0 / 1000)}' "$CPUFREQ_PATH/policy0/cpuinfo_cur_freq")"
	[ ! -e "$CPUFREQ_PATH/policy4/cpuinfo_cur_freq" ] || \
		big_cpu_freq="$(awk '{printf("%.fMHz ", $0 / 1000)}' "$CPUFREQ_PATH/policy4/cpuinfo_cur_freq")"
	;;
esac

case "$DISTRIB_TARGET" in
"bcm27xx"/*)
	cpu_temp="$(vcgencmd measure_temp | awk -F '=' '{print $2}' | awk -F "'" '{print $1}')°C" ;;
"x86"/*)
	# Intel
	cpu_temp="$(sensors "coretemp-*" 2>"/dev/null" | grep -E "(Package id |Core )" | grep -Eo "\+[0-9.]*°C" | head -n1 | tr -d "+")"
	# AMD
	[ -n "${cpu_temp}" ] || cpu_temp="$(sensors "k10temp-*" 2>"/dev/null" | awk '/Tctl|Tdie/ {print $2}' | head -n1 | tr -d "+")"
	;;
*)
	[ ! -e "$THERMAL_PATH/thermal_zone0/temp" ] || \
		cpu_temp="$(awk '{printf("%.1f°C", $0 / 1000)}' "$THERMAL_PATH/thermal_zone0/temp")"
	;;
esac

if [ -z "$big_cpu_freq$cpu_freq" ] && [ -n "$cpu_temp" ]; then
	echo -n "$cpu_arch x $cpu_cores ($cpu_temp)"
elif [ -z "$cpu_temp" ] && [ -n "$big_cpu_freq$cpu_freq" ] || \
		grep -Eq "ipq|mt7622" "/etc/openwrt_release"; then
	echo -n "$cpu_arch x $cpu_cores ($big_cpu_freq$cpu_freq)"
elif [ -n "$cpu_temp" ] && [ -n "$big_cpu_freq$cpu_freq" ]; then
	echo -n "$cpu_arch x $cpu_cores ($big_cpu_freq$cpu_freq, ${cpu_temp})"
else
	echo -n "$cpu_arch x $cpu_cores"
fi