#!/bin/bash

DIR="/sys/class/backlight"

[[ "$BLOCK_INSTANCE" =~ "color" ]] && MODE="color" || MODE="bw"
[[ "$BLOCK_INSTANCE" =~ "long" || "$BLOCK_BUTTON" == 1 ]] && LONG=true

if [[ -d "$DIR/acpi_video0" ]]; then
   DIR="$DIR/acpi_video0"
elif [[ -d "$DIR/intel_backlight" ]]; then
   DIR="$DIR/intel_backlight"
else
   echo " no backlight "
   echo "n/a"
   exit 33
fi

cat "$DIR/brightness" "$DIR/max_brightness" | gawk -v MODE="$MODE" -v LONG="$LONG" '

    BEGIN {
        bar[1] = "▁"; color[1] = "#64bc01"; bw[1] = "#565656"
        bar[2] = "▂"; color[2] = "#77a601"; bw[2] = "#6d6d6d"
        bar[3] = "▃"; color[3] = "#8a9101"; bw[3] = "#848485"
        bar[4] = "▄"; color[4] = "#9d7b00"; bw[4] = "#9c9c9c"
        bar[5] = "▅"; color[5] = "#b06701"; bw[5] = "#b1b1b1"
        bar[6] = "▆"; color[6] = "#c45100"; bw[6] = "#c7c7c7"
        bar[7] = "▇"; color[7] = "#d63c00"; bw[7] = "#dcdcdc"
        bar[8] = "█"; color[8] = "#e92700"; bw[8] = "#f5f5f6"
        step = 100 / length(bar)
    }

    NR==1 { cbr = $1 }
    NR==2 { mbr = $1 }

    END {
        load = ( cbr / mbr ) * 100
        if (LONG == "true") {
            printf("%d%\n%d\n", load, load)
        } else {
            for (i in bar) {
                if (load <= i * step) {
                    printf("%s\n%s\n", bar[i], bar[i])
                    break
                }
            }
        }
        for (i in color) {
            if (load <= i * step) {
                if (MODE == "color") {
                    printf("%s\n", color[i])
                } else {
                    printf("%s\n", bw[i])
                }
                break
            }
        }
    }
'