New battery module

I no longer have devices with two batteries, so the old one is overly
complicated.

ACPI provides simpler output and an estimated time remaining!f

waybar/waybar-battery.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+ACPI=$(acpi -b)
+STATUS=$(echo $ACPI | cut -d':' -f2 | sed 's/^\s\([^,]*\),.*/\1/')
+LEVEL=$(echo $ACPI | cut -d',' -f2 | sed 's/\s//g' | sed 's/%$//')
+TIME=$(echo $ACPI | cut -d',' -f3 | sed 's/\s//')
+CLASS="unknown"
+if [[ -z $1 ]]; then
+    echo "$STATUS $LEVEL ($TIME)"
+elif [[ $1 == bar ]]; then
+    case "$STATUS" in
+        "Discharging")
+            CLASS="discharging"
+            case "$LEVEL" in
+                [8-9][0-9])
+                    STATUS=" "
+                    ;;
+                [6-7][0-9])
+                    STATUS=" "
+                    ;;
+                [4-5][0-9])
+                    STATUS=" "
+                    ;;
+                [2-3][0-9])
+                    STATUS=" "
+                    ;;
+                1[0-9])
+                    CLASS="low"
+                    STATUS=" "
+                    ;;
+                [1-9])
+                    CLASS="charging"
+                    STATUS=" "
+                    ;;
+                *)
+                    STATUS="? "
+                    ;;
+            esac
+            ;;
+        "Not charging")
+            CLASS="ac"
+            STATUS=" "
+            ;;
+        "Charging")
+            CLASS="charging"
+            STATUS="🗲 "
+            ;;
+        *)
+            STATUS="✘ "
+            ;;
+    esac
+    printf '{"text":"%b%%","icon":"%b ","percentage":"%b","tooltip":"%b","class":"%b"}' "${STATUS}${LEVEL}" $STATUS $LEVEL "$TIME" $CLASS
+    exit
+elif [[ $1 == 'notify' ]]; then
+    notify-send Battery "$(echo $ACPI | cut -d':' -f2- | sed 's/\s//')"
+else
+    echo "invalid option $1"
+fi