Add eww bar

This configuration was simply copied from my old Arch Linux system.
There are some issues that still need to be solved, namely with fonts
and missing bitcoin price script, but it's mostly minor.

home/programs/graphical/bars/eww/config/scripts/volume

@@ -0,0 +1,112 @@
+#!/bin/env bash
+
+# Define some icons
+SPEAKER_ICONS=("" "" "")
+SPEAKER_MUTED_ICON=""
+MIC_ICON=""
+MIC_MUTED_ICON=""
+
+# Define some helper functions for getting/setting audio data using wireplumber (wpctl)
+
+# $1 can either be "SINK" (speaker) or "SOURCE" (microphone)
+get_vol() {
+  wpctl get-volume "@DEFAULT_AUDIO_${1}@" | awk '{print int($2*100)}'
+}
+
+# $1 can either be "SINK" (speaker) or "SOURCE" (microphone)
+# #2 is the voulme (as percentage) to set the volume to
+# $3 is optional, if set, it can be '+' or '-', which then adds/decreases volume, instead of setting
+set_vol() {
+  wpctl set-volume "@DEFAULT_AUDIO_${1}@" "$(awk -v n="$2" 'BEGIN{print (n / 100)}')$3"
+}
+
+# $1 can either be "SINK" (speaker) or "SOURCE" (microphone)
+check_mute() {
+  wpctl get-volume "@DEFAULT_AUDIO_${1}@" | grep -i muted >/dev/null
+  echo $?
+}
+
+# $1 can either be "SINK" (speaker) or "SOURCE" (microphone)
+toggle_mute() {
+  wpctl set-mute "@DEFAULT_AUDIO_${1}@" toggle
+}
+
+get_report() {
+  spkr_vol="$(get_vol "SINK")"
+  mic_vol="$(get_vol "SOURCE")"
+
+  if [ "$(check_mute "SINK")" == "0" ]; then
+    spkr_mute="true"
+    spkr_icon="$SPEAKER_MUTED_ICON"
+  else
+    spkr_mute="false"
+    index="$(awk -v n="$spkr_vol" -v m="${#SPEAKER_ICONS[@]}" 'BEGIN{print int(n/(100/m))}')"
+
+    # We might end up with an higher than the length of icons, if the volume is over 100%
+    # in this case, set the index to last icon
+    if [ "$index" -ge "${#SPEAKER_ICONS[@]}" ]; then
+      spkr_icon="${SPEAKER_ICONS[-1]}"
+    else
+      spkr_icon="${SPEAKER_ICONS[$index]}"
+    fi
+  fi
+
+  if [ "$(check_mute "SOURCE")" = "0" ]; then
+    mic_mute="true"
+    mic_icon="$MIC_MUTED_ICON"
+  else
+    mic_mute="false"
+    mic_icon="$MIC_ICON"
+  fi
+
+  echo "{ \"speaker_vol\": \"$spkr_vol\", \"speaker_mute\": $spkr_mute, \"speaker_icon\": \"$spkr_icon\", \"microphone_mute\": $mic_mute, \"microphone_vol\": \"$mic_vol\", \"microphone_icon\": \"$mic_icon\" }"
+}
+
+# Continually run and report every volume change (into stdout)
+loop() {
+  get_report
+  pactl subscribe | grep --line-buffered "change" | while read -r _; do
+    get_report
+  done
+}
+
+case "$1" in
+"loop") loop ;;
+
+"once") get_report ;;
+
+"togglemute")
+  if [ "$2" != "SOURCE" ] && [ "$2" != "SINK" ]; then
+    >&2 echo "Invalid usage, expected second argument to be 'SINK' or 'SOURCE', got '$2'"
+    exit 1
+  fi
+  toggle_mute "$2"
+  ;;
+
+"setvol")
+  if [ "$2" != "SOURCE" ] && [ "$2" != "SINK" ]; then
+    >&2 echo "Invalid usage, expected second argument to be 'SINK' or 'SOURCE', got '$2'"
+    exit 1
+  fi
+
+  if [[ "$3" =~ ^[+-]?[0-9]*\.?[0-9]+$ ]]; then
+    case "$4" in
+    "") set_vol "$2" "$3" ;;
+    up | +) set_vol "$2" "$3" "+" ;;
+    down | -) set_vol "$2" "$3" "-" ;;
+    *)
+      >&2 echo "Invalid usage, expected fourth argument to be up/down or +/-, got '$4'"
+      exit 1
+      ;;
+    esac
+  else
+    >&2 echo "Invalid usage, exepcted third argument to be a number, got '$3'"
+    exit 1
+  fi
+  ;;
+
+*)
+  >&2 echo "Invalid usage, argument '$1' not recognized."
+  exit 1
+  ;;
+esac