Generic initialize of audio devices

More generic solution to initialize audio device profiles
Finds default audio device and initializes its profiles

Signed-off-by: Jon Sahlberg <[email protected]>

modules/common/services/audio.nix

@@ -91,26 +91,76 @@ in
     # Start pipewire on system boot
     systemd.services.pipewire.wantedBy = [ "multi-user.target" ];
 
-    systemd.services."pulseaudio-set-profile" =
+    systemd.services."initialize-audio-profile" =
       let
-        pulse-set-profile = pkgs.writeShellScriptBin "pulseaudio-set-profile" ''
-          ${pkgs.pulseaudio}/bin/pactl set-card-profile "alsa_card.pci-0000_00_07.0-platform-skl_hda_dsp_generic" "HiFi (Headphones, Mic1, Mic2)"
-          ${pkgs.pulseaudio}/bin/pactl set-card-profile "alsa_card.pci-0000_00_07.0-platform-skl_hda_dsp_generic" "HiFi (Mic1, Mic2, Speaker)"
-        '';
+        initialize-audio-profile = pkgs.writeShellApplication {
+          name = "initialize-audio-profile";
+          runtimeInputs = [
+            pkgs.pulseaudio
+            pkgs.jq
+          ];
+          text = ''
+            function setProfile() {
+              if [[ -n "$1" ]] && [[ -n "$2" ]]; then
+                echo "Setting audio device profile: ($1 - $2)"
+                pactl set-card-profile "$1" "$2"
+              fi
+            }
+
+            function findAudioProfiles() {
+              local audio_device_name active_profile profile_list
+              if [[ -n "$1" ]]; then
+                audio_device_name=$(jq --raw-output --argjson index "$1" '.[$index].name' <<< "$pactl_data")
+                active_profile=$(jq --raw-output --argjson index "$1" '.[$index].active_profile ' <<< "$pactl_data")
+                if [[ -n "$audio_device_name" ]]; then
+                  echo "Found the default audio device: $audio_device_name"
+                  profile_list=$(jq --raw-output --argjson index "$1" '.[$index].profiles | keys[]' <<< "$pactl_data")
+                  echo "With profiles: $profile_list"
+                  while IFS= read -r profile; do
+                    setProfile "$audio_device_name" "$profile"
+                  done <<< "$profile_list"
+
+                  echo "Reset the original active profile."
+                  if [[ -n "$active_profile" ]]; then
+                    setProfile "$audio_device_name" "$active_profile"
+                  fi
+                fi
+              fi
+            }
+
+            pactl_data=$(pactl --format=json list cards)
+            if [[ -z "$pactl_data" ]]; then
+              pulse_address="''${PULSE_SERVER:-localhost}"
+              echo "Error connecting to Pulseaudio service at: \"$pulse_address\""
+              exit 1
+            fi
+
+            default_device_id=$(pactl --format=json info short | jq '.default_sink_name | split(".") | .[1:-1] | join(".")')
+            echo "Default audio device name: $default_device_id";
+
+            audio_device_count=$(jq '. | length' <<< "$pactl_data")
+            echo "Audio device count: $audio_device_count"
+
+            for ((index = 0; index < audio_device_count; index++)); do
+              device_id=$(jq --argjson index $index '.[$index].name | split(".") | .[1:] | join(".")' <<< "$pactl_data")
+              echo "Found audio device with id: $device_id"
+              if [[ "$device_id" == "$default_device_id" ]]; then
+                findAudioProfiles "$index"
+              fi
+            done
+          '';
+        };
       in
       {
         enable = true;
-        description = "Force selection of Pulseaudio integrated mic profile";
-        path = [ pulse-set-profile ];
+        description = "Initialize default audio device profiles";
         wantedBy = [ "multi-user.target" ];
         after = [ "pipewire.target" ];
         serviceConfig = {
           Type = "oneshot";
           RemainAfterExit = true;
-          StandardOutput = "journal";
-          StandardError = "journal";
           Environment = "PULSE_SERVER=tcp:localhost:${toString cfg.pulseaudioTcpControlPort}";
-          ExecStart = "${pulse-set-profile}/bin/pulseaudio-set-profile";
+          ExecStart = "${initialize-audio-profile}/bin/initialize-audio-profile";
           Restart = "on-failure";
           RestartSec = "1";
         };