#!/bin/bash

IPMI_HOST=`cat /idrac_host.txt`
IPMI_USERNAME=`cat /idrac_username.txt`
IPMI_PASSWORD=`cat /idrac_password.txt`
DECIMAL_FAN_SPEED=`cat /decimal_fan_speed.txt`
HEXADECIMAL_FAN_SPEED=`cat /hexadecimal_fan_speed.txt`
CPU_TEMPERATURE_TRESHOLD=`cat /cpu_temperature_treshold.txt`
readonly DELL_FRESH_AIR_COMPLIANCE=45

if [[ $IPMI_HOST == "local" ]]
then
  LOGIN_STRING='open'
else
  LOGIN_STRING="lanplus -H $IPMI_HOST -U $IPMI_USERNAME -P $IPMI_PASSWORD"
fi

DATA=$(ipmitool -I $LOGIN_STRING sdr type temperature | grep degrees)
INLET_TEMPERATURE=$(echo "$DATA" | grep Inlet | grep -Po '\d{2}' | tail -1)
EXHAUST_TEMPERATURE=$(echo "$DATA" | grep Exhaust | grep -Po '\d{2}' | tail -1)
CPU_DATA=$(echo "$DATA" | grep "3\." | grep -Po '\d{2}')
CPU1_TEMPERATURE=$(echo $CPU_DATA | awk '{print $1;}')
CPU2_TEMPERATURE=$(echo $CPU_DATA | awk '{print $2;}')

RED='\033[0;31m'
GREEN='\033[0;32m'
NC='\033[0m' # No Color

echo "------------------------------------"
echo "Current"
echo "- inlet temperature is $INLET_TEMPERATURE°C"
echo "- CPU 1 temperature is $CPU1_TEMPERATURE°C"
echo "- CPU 2 temperature is $CPU2_TEMPERATURE°C"
echo "- Exhaust temperature is $EXHAUST_TEMPERATURE°C"

CPU1_OVERHEAT () { [ $CPU1_TEMPERATURE -gt $CPU_TEMPERATURE_TRESHOLD ]; }
CPU2_OVERHEAT () { [ $CPU2_TEMPERATURE -gt $CPU_TEMPERATURE_TRESHOLD ]; }

if CPU1_OVERHEAT
then
  if CPU2_OVERHEAT
  then
    printf "CPU 1 and CPU 2 temperatures are ${RED}too high${NC}. Activating default dynamic fan control."
  else
    printf "CPU 1 temperature is ${RED}too high${NC}. Activating default dynamic fan control."
  fi
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x01
elif CPU2_OVERHEAT
then
  printf "CPU 2 temperature is ${RED}too high${NC}. Activating default dynamic fan control."
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x01
else
  printf "CPUs temperatures are ${GREEN}OK${NC}. Using manual fan control with ${DECIMAL_FAN_SPEED}%% fan speed."
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x00
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x02 0xff $HEXADECIMAL_FAN_SPEED
fi