#!/bin/bash

source /etc/os-release

### short version (for osd)
if test "$1" = "--short"
then
    BATT=$(cat /sys/class/power_supply/{BAT,bat}*/uevent 2>/dev/null | grep -E "^POWER_SUPPLY_CAPACITY=" | sed -e s+'^POWER_SUPPLY_CAPACITY='++ | sort -rn | head -1)
    DT=$(date +%H:%M)
    if test -n "${BATT}"
    then
	echo "Battery: ${BATT}% - ${DT}"
    else
	echo "${DT}"
    fi
    exit 0
fi
###

TEST=$(ldd /usr/bin/emulationstation | grep 64)
if [ $? == 0 ]
then
  V_OSARCH="aarch64"
else
  V_OSARCH="arm"
fi

V_CPUNB=$(grep -E $'^processor\t:' /proc/cpuinfo | wc -l)
V_CPUMODEL1=$(grep -E $'^model name\t:' /proc/cpuinfo | head -1 | sed -e s+'^model name\t: '++)
V_SYSTEM=$(uname -rs)
V_ARCH=$(uname -m)

[[ "$V_CPUMODEL1" ]] || V_CPUMODEL1="${HW_CPU}"

# battery
BATT=$(cat /sys/class/power_supply/{BAT,bat}*/uevent 2>/dev/null | grep -E "^POWER_SUPPLY_CAPACITY=" | sed -e s+'^POWER_SUPPLY_CAPACITY='++ | sort -rn | head -1)

# PAD Battery
for PADBAT in /sys/class/power_supply/*/device/uevent
do
    # HID devices only
    PADNAME=$(grep -E '^HID_NAME=' "${PADBAT}" | sed -e s+'^HID_NAME='++)
    if test -n "${PADNAME}"
    then
	# parent of parent / uevent
	BATTUEVENT=$(dirname "${PADBAT}")
	BATTUEVENT=$(dirname "${BATTUEVENT}")/uevent
	BATT=$(grep -E "^POWER_SUPPLY_CAPACITY=" "${BATTUEVENT}" | sed -e s+'^POWER_SUPPLY_CAPACITY='++ | sort -rn | head -1)
	echo "${PADNAME}: ${BATT}%"
    fi
done

declare -a CF MF

CNTR=0
for CPUFREQ in /sys/devices/system/cpu/cpufreq/*
do
  if [ "${CNTR}" -eq 0 ]
  then
    CF+=("CURRENT FREQUENCY:")
    MF+=("MAXIMUM FREQUENCY:")
  fi
  CF+=("CORES $(cat ${CPUFREQ}/related_cpus | awk '{print $1"-"$NF}'): $(( $(cat ${CPUFREQ}/scaling_cur_freq  | sort | tail -n 1) / 1000))MHz")
  MF+=("CORES $(cat ${CPUFREQ}/related_cpus | awk '{print $1"-"$NF}'): $(( $(cat ${CPUFREQ}/cpuinfo_max_freq | sort | tail -n 1) / 1000))MHz")
  CNTR=$(( CNTR + 1 ))
done


# temperature
# Unit: millidegree Celsius
TEMPE=$(cat /sys/devices/virtual/thermal/thermal_zone*/temp 2>/dev/null | sort -rn | head -1 | sed -e s+"[0-9][0-9][0-9]$"++)
echo "SYSTEM INFORMATION:"
echo "OPERATING SYSTEM: ${OS_NAME}"
echo "VERSION: ${OS_VERSION}"
echo "BUILD ID: ${BUILD_ID:0:7}"
echo "ARCHITECTURE: ${V_OSARCH}"
echo "KERNEL: ${V_SYSTEM} (${V_ARCH})"
echo "DISK SPACE:"
echo "/storage: $(df -h /storage | awk '/dev/ {print $3"/"$2" ("$5")"}')"
echo "/storage/roms: $(df -h /storage/roms | awk '/dev/ {print $3"/"$2" ("$5")"}')"

echo "BATTERY INFORMATION:"
if test -n "${BATT}"
then
    echo "BATTERY REMAINING: ${BATT}%"
    if [ -e "/sys/class/power_supply/bat/health" ]
    then
      echo "BATTERY HEALTH: $(cat /sys/class/power_supply/bat/health)"
    fi
    if [ -e "/sys/class/power_supply/bat/status" ]
    then
      echo "BATTERY STATE: $(cat /sys/class/power_supply/bat/status)"
    fi
fi
echo "CPU INFORMATION:"
echo "CPU: ${V_CPUMODEL1} (${V_CPUNB} Cores)"
if test -n "${TEMPE}"
then
    echo "CPU TEMPERATURE: ${TEMPE}°"
fi
for C in "${CF[@]}"
do
  echo ${C}
done
for M in "${MF[@]}"
do
  echo ${M}
done