home: mute script

1 files changed, 39 insertions, 0 deletions

diff --git a/packages/mute/default.nix b/packages/mute/default.nix
new file mode 100644
index 0000000..b868acd
--- /dev/null
+++ b/packages/mute/default.nix
@@ -0,0 +1,39 @@
+{ lib, pkgs, ... }:
+
+let
+  pactl = "${pkgs.pulseaudio}/bin/pactl";
+  jq = "${pkgs.jq}/bin/jq";
+in pkgs.writeShellScriptBin "mute" ''
+  set -euo pipefail
+  IFS=$'\n\t'
+
+  target="''${1:-0}"
+  inputs="$(${pactl} -f json list sink-inputs)"
+
+  if [[ "''${1:-}" != "" ]]; then
+      index="$(${jq} '.['$target'].index' <<< "$inputs")"
+      muted="$(${jq} '.['$target'].mute' <<< "$inputs")"
+      if [[ "$muted" = "true" ]]; then
+          ${pactl} set-sink-input-mute "$index" false
+      else
+          ${pactl} set-sink-input-mute "$index" true
+      fi
+
+      inputs="$(${pactl} -f json list sink-inputs)"
+  fi
+
+  count="$(${jq} 'length' <<< "$inputs")"
+  for ((i = 0; i < $count; i++)); do
+      index="$(${jq} '.['$i'].index' <<< "$inputs")"
+      muted="$(${jq} '.['$i'].mute' <<< "$inputs")"
+      name="$(${jq} '.['$i'].properties."application.name"' <<< "$inputs")"
+      media="$(${jq} '.['$i'].properties."media.name"' <<< "$inputs")"
+
+      state=" "
+      if [[ "$muted" = "true" ]]; then
+          state="*"
+      fi
+
+      printf '  [%d] %s %d\t%s\t(%s)\n' "$i" "$state" "$index" "$name" "$media"
+  done
+''