#!/usr/bin/env bash

cache_dir=~/.cache/tmux
cache_file=$cache_dir/system-info

# Make sure the output directory exists.
if [ ! -d $cache_dir ]; then
  mkdir -p $cache_dir
fi

while true; do
  # Assumes OpenHardwareMonitor is has the Remote Web Server enabled on port
  # 8085 of the Windows host. In WSL2 the Windows host IP is accessible using
  # $(homename).local, use this to grab sensor data but this depends on WSL2
  # being allowed to make connections to the Windows host:
  #
  # ```powershell
  # New-NetFirewallRule -DisplayName "WSL" -Direction Inbound  -InterfaceAlias "vEthernet (WSL)"  -Action Allow
  # ```
  #
  # However this setting must be applied each boot, there's probably a sticky
  # setting but not sure what it is.
  cpu_json=`curl --silent $(hostname).local:8085/data.json | jq \
".Children[] | select(.Text | test(\"$(hostname | awk '{print toupper($0)}')\"))"\
'.Children[] | select(.ImageURL | test("images_icon/cpu.png"))'`

  # cpu_load=`echo $cpu_json | jq --raw-output \
  # '.Children[] | select(.Text | test("Load"))'\
  # '.Children[] | select(.Text | test("CPU Core #[0-9]+")).Value'`
  # echo cpu load: $cpu_load

  cpu_load=`mpstat -P ALL -n 1 -u 1 -o JSON | \
    jq '.sysstat.hosts[0].statistics[0]["cpu-load"][1:]|.[].idle' | \
    awk '$idle ~ /[-.0-9]*/ { printf "%s", substr("█▇▆▅▄▃▂▁ ", int($idle / 11), 1) }'`

  cpu_temp=`echo $cpu_json | jq --raw-output \
'.Children[] | select(.Text | test("Temperatures"))'\
'.Children[] | select(.Text | test("CPU Package")).Value' | \
    awk '{gsub(/ /,""); print}'`

  echo "$cpu_temp $cpu_load" > $cache_file
  # echo -e "HTTP/1.1 200 OK\n\n$cpu_temp $cpu_load" | nc -l -k -p 8080 -q 1;
  sleep 1
done