nixos/home/common/optional/desktop/dwm/scripts/battery-status.nix

{ pkgs, ... }:
{
  home.packages = [
    (pkgs.writeShellScriptBin "battery-status" ''
      
      # Get the current power consumption of the laptop battery
      power=$(cat /sys/class/power_supply/BAT0/power_now)
      power_watts=$(${pkgs.bc}/bin/bc <<< "scale=3; $power / 1000000")
      
      # Get the current battery charge capacity
      energy=$(cat /sys/class/power_supply/BAT0/energy_now)
      
      # Get the current battery status (charging or discharging)
      battery_status=$(cat /sys/class/power_supply/BAT0/status)
      
      # Calculate the time remaining until the battery is empty or full
      if [ "$battery_status" == "Charging" ]; then
        # Calculate the time remaining until the battery is full
        hours=$(${pkgs.bc}/bin/bc <<< "scale=2; $power / $energy")
        hours_int=$(${pkgs.bc}/bin/bc <<< "scale=0; $hours / 1")
        minutes=$(${pkgs.bc}/bin/bc <<< "scale=0; 60 * ($hours - $hours_int)/1")
      
        if [ "$hours_int" -gt "0" ]; then
          # Show hours and minutes if time remaining is greater than or equal to 1 hour
          echo "Full in: $hours_int hours $minutes minutes"
        else
          # Show minutes if time remaining is less than 1 hour
          echo "Full in: $minutes minutes"
        fi
      
      elif [ "$battery_status" == "Discharging" ]; then
        # Calculate the time remaining until the battery is empty
        hours=$(${pkgs.bc}/bin/bc <<< "scale=2; $energy / $power")
        hours_int=$(${pkgs.bc}/bin/bc <<< "scale=0; $hours / 1")
        minutes=$(${pkgs.bc}/bin/bc <<< "scale=0; 60 * ($hours - $hours_int)/1")
      
        if [ "$hours_int" -gt "0" ]; then
          # Show hours and minutes if time remaining is greater than or equal to 1 hour
          echo "Empty in: $hours_int hours $minutes minutes"
        else
          # Show minutes if time remaining is less than 1 hour
          echo "Empty in: $minutes minutes"
        fi
      
      elif [ "$battery_status" == "Full" ]; then
        echo "Battery full"
      elif [ "$battery_status" == "Not charging" ]; then
        echo "Battery full - not charging"
      fi
      
      echo "Power consumption: $power_watts W"
    '')
  ];
}