#!/bin/bash

# Define global functions
function apply_Dell_profile () {
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x01 > /dev/null
  CURRENT_FAN_CONTROL_PROFILE="Dell default dynamic fan control profile"
}

function apply_user_profile () {
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x01 0x00 > /dev/null
  ipmitool -I $LOGIN_STRING raw 0x30 0x30 0x02 0xff $HEXADECIMAL_FAN_SPEED > /dev/null
  CURRENT_FAN_CONTROL_PROFILE="User static fan control profile ($DECIMAL_FAN_SPEED%)"
}

function enable_third_party_PCIe_card_Dell_default_cooling_response () {
  # We could check the current cooling response before applying but it's not very useful so let's skip the test and apply directly
  ipmitool -I $LOGIN_STRING raw 0x30 0xce 0x00 0x16 0x05 0x00 0x00 0x00 0x05 0x00 0x00 0x00 0x00 > /dev/null
}

function disable_third_party_PCIe_card_Dell_default_cooling_response () {
  # We could check the current cooling response before applying but it's not very useful so let's skip the test and apply directly
  ipmitool -I $LOGIN_STRING raw 0x30 0xce 0x00 0x16 0x05 0x00 0x00 0x00 0x05 0x00 0x01 0x00 0x00 > /dev/null
}

# Returns :
# - 0 if third-party PCIe card Dell default cooling response is currently DISABLED
# - 1 if third-party PCIe card Dell default cooling response is currently ENABLED
# - 2 if the current status returned by ipmitool command output is unexpected
# function is_third_party_PCIe_card_Dell_default_cooling_response_disabled() {
#   THIRD_PARTY_PCIE_CARD_COOLING_RESPONSE=$(ipmitool -I $LOGIN_STRING raw 0x30 0xce 0x01 0x16 0x05 0x00 0x00 0x00)

#   if [ "$THIRD_PARTY_PCIE_CARD_COOLING_RESPONSE" == "16 05 00 00 00 05 00 01 00 00" ]; then
#     return 0
#   elif [ "$THIRD_PARTY_PCIE_CARD_COOLING_RESPONSE" == "16 05 00 00 00 05 00 00 00 00" ]; then
#     return 1
#   else
#     echo "Unexpected output: $THIRD_PARTY_PCIE_CARD_COOLING_RESPONSE" >&2
#     return 2
#   fi
# }

# Prepare traps in case of container exit
function gracefull_exit () {
  apply_Dell_profile
  enable_third_party_PCIe_card_Dell_default_cooling_response
  echo "/!\ WARNING /!\ Container stopped, Dell default dynamic fan control profile applied for safety."
  exit 0
}

trap 'gracefull_exit' SIGQUIT SIGKILL SIGTERM

# Prepare, format and define initial variables

#readonly DELL_FRESH_AIR_COMPLIANCE=45

if [[ $FAN_SPEED == 0x* ]]
then
  DECIMAL_FAN_SPEED=$(printf '%d' $FAN_SPEED)
  HEXADECIMAL_FAN_SPEED=$FAN_SPEED
else
  DECIMAL_FAN_SPEED=$FAN_SPEED
  HEXADECIMAL_FAN_SPEED=$(printf '0x%02x' $FAN_SPEED)
fi

# Log main informations given to the container
echo "Idrac/IPMI host: $IDRAC_HOST"
if [[ $IDRAC_HOST == "local" ]]
then
  LOGIN_STRING='open'
else
  echo "Idrac/IPMI username: $IDRAC_USERNAME"
  echo "Idrac/IPMI password: $IDRAC_PASSWORD"
  LOGIN_STRING="lanplus -H $IDRAC_HOST -U $IDRAC_USERNAME -P $IDRAC_PASSWORD"
fi
echo "Fan speed objective: $DECIMAL_FAN_SPEED%"
echo "CPU temperature treshold: $CPU_TEMPERATURE_TRESHOLD°C"
echo "Check interval: ${CHECK_INTERVAL}s"
echo ""

# Prepare required variables and constants
readonly TABLE_HEADER_PRINT_INTERVAL=10
i=$TABLE_HEADER_PRINT_INTERVAL
IS_DELL_PROFILE_APPLIED=true

# Start monitoring
while true; do
  sleep $CHECK_INTERVAL &
  SLEEP_PROCESS_PID=$!

  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;}')

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

  COMMENT=" -"
  if CPU1_OVERHEAT
  then
    apply_Dell_profile

    if ! $IS_DELL_PROFILE_APPLIED
    then
      IS_DELL_PROFILE_APPLIED=true

      if CPU2_OVERHEAT
      then
        COMMENT="CPU 1 and CPU 2 temperatures are too high. Dell default dynamic fan control profile applied."
      else
        COMMENT="CPU 1 temperature is too high. Dell default dynamic fan control profile applied."
      fi
    fi
  elif CPU2_OVERHEAT
  then
    apply_Dell_profile

    if ! $IS_DELL_PROFILE_APPLIED
    then
      IS_DELL_PROFILE_APPLIED=true
      COMMENT="CPU 2 temperature is too high. Dell default dynamic fan control profile applied."
    fi
  else
    apply_user_profile

    if $IS_DELL_PROFILE_APPLIED
    then
      COMMENT="CPU temperature decreased and is now OK (<= $CPU_TEMPERATURE_TRESHOLD°C). User's fan control profile applied."
      IS_DELL_PROFILE_APPLIED=false
    fi
  fi

  # Enable or disable, depending on the user's choice, third-party PCIe card Dell default cooling response
  # No comment will be displayed on the change of this parameter since it is not related to the temperature of any device (CPU, GPU, etc...) but only to the settings made by the user when launching this Docker container
  if $DISABLE_THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE
  then
    disable_third_party_PCIe_card_Dell_default_cooling_response
    THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE_STATUS="Disabled"
  else
    enable_third_party_PCIe_card_Dell_default_cooling_response
    THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE_STATUS="Enabled"
  fi

  # Print temperatures array
  if [ $i -ge $TABLE_HEADER_PRINT_INTERVAL ]
  then
    echo "                   ------- Temperatures -------"
    echo "   Date & time     Inlet  CPU 1  CPU 2  Exhaust          Active fan speed profile          Third-party PCIe card Dell default cooling response  Comment"
    i=0
  fi
  printf "%12s  %3d°C  %3d°C  %3d°C  %5d°C  %40s  %51s  %s\n" "$(date +"%d-%m-%y %H:%M:%S")" $INLET_TEMPERATURE $CPU1_TEMPERATURE $CPU2_TEMPERATURE $EXHAUST_TEMPERATURE "$CURRENT_FAN_CONTROL_PROFILE" "$THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE_STATUS" "$COMMENT"

  ((i++))
  wait $SLEEP_PROCESS_PID
done