added toggleaudiosink pkg

packages/toggleaudiosink.nix

@@ -0,0 +1,48 @@
+{
+  pkgs ? import <nixpkgs> { },
+}:
+
+pkgs.writeShellScriptBin "toggleaudiosink" ''
+  #!/usr/bin/env bash
+
+  sound_server="pipewire"
+
+  # Grab a count of how many audio sinks we have
+  sink_count=$(${pkgs.pulseaudio}/bin/pactl list sinks | grep -c "Sink #[[:digit:]]")
+  # Create an array of the actual sink IDs
+  sinks=()
+  mapfile -t sinks < <(${pkgs.pulseaudio}/bin/pactl list sinks | grep 'Sink #[[:digit:]]' | sed -n -e 's/.*Sink #\([[:digit:]]\)/\1/p')
+  # Get the ID of the active sink
+  active_sink_name=$(${pkgs.pulseaudio}/bin/pactl info | grep 'Default Sink:' | sed -n -e 's/.*Default Sink:[[:space:]]\+\(.*\)/\1/p')
+  active_sink=$(${pkgs.pulseaudio}/bin/pactl list sinks | grep -B 2 "$active_sink_name" | sed -n -e 's/Sink #\([[:digit:]]\)/\1/p' | head -n 1)
+
+  # Get the ID of the last sink in the array
+  final_sink=''${sinks[$((sink_count - 1))]}
+
+  # Find the index of the active sink
+  for index in "''${!sinks[@]}"; do
+    if [[ "''${sinks[$index]}" == "$active_sink" ]]; then
+      active_sink_index=$index
+    fi
+  done
+
+  # Default to the first sink in the list
+  next_sink=''${sinks[0]}
+  next_sink_index=0
+
+  # If we're not at the end of the list, move up the list
+  if [[ $active_sink -ne $final_sink ]]; then
+    next_sink_index=$((active_sink_index + 1))
+    next_sink=''${sinks[$next_sink_index]}
+  fi
+
+  # Change the default sink
+  # Get the name of the next sink
+  next_sink_name=$(${pkgs.pulseaudio}/bin/pactl list sinks | grep -C 2 "Sink #$next_sink" | sed -n -e 's/.*Name:[[:space:]]\+\(.*\)/\1/p' | head -n 1)
+  ${pkgs.pulseaudio}/bin/pactl set-default-sink "$next_sink_name"
+
+  # Move all inputs to the new sink
+  for app in $(${pkgs.pulseaudio}/bin/pactl list sink-inputs | sed -n -e 's/.*Sink Input #\([[:digit:]]\)/\1/p'); do
+    ${pkgs.pulseaudio}/bin/pactl "move-sink-input $app $next_sink"
+  done
+''