Add bluetooth sink

hosts/iron/services/default.nix

@@ -7,18 +7,15 @@
     ./esphome
     ./home-assistant.nix
     ./jellyfin.nix
-    ./ledfx.nix
     ./mail.nix
     ./matrix.nix
-    ./mopidy.nix
     ./navidrome.nix
     ./nginx.nix
     ./ntp.nix
     ./public-ip-tunnel.nix
     ./radicale.nix
     ./remarkable.nix
-    ./snapclient.nix
-    ./snapserver.nix
+    ./snapcast
     ./sturzbach.nix
     ./tts.nix
     ./unifi-controller.nix

hosts/iron/services/snapcast/alsa.nix

@@ -0,0 +1,6 @@
+{
+  boot.kernelModules = [ "snd-aloop" ];
+  boot.extraModprobeConfig = ''
+    options snd-aloop id=ledfx,bluetooth enable=1,1 pcm_substreams=2,2
+  '';
+}

hosts/iron/services/snapcast/bluetooth-sink.nix

@@ -0,0 +1,77 @@
+{ pkgs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    bluez-alsa
+  ];
+
+  hardware.bluetooth = {
+    enable = true;
+    settings = {
+      General = {
+        Enable = "Source,Sink,Media,Socket";
+        Class = "0x00041C";
+        # Pairing always on
+        AlwaysPairable = "true";
+        # Don't disable discoverability after timeout
+        DiscoverableTimeout = "0";
+        # Faster but uses more power
+        FastConnectable = "true";
+        # Allow repairing of existing devices
+        JustWorksRepairing = "always";
+      };
+    };
+  };
+
+  services.blueman.enable = true;
+
+  systemd.services.bluetooth-auto-pair = {
+    wantedBy = [
+      "bluetooth.service"
+    ];
+    after = [
+      "bluetooth.service"
+    ];
+    bindsTo = [
+      "bluetooth.service"
+    ];
+    serviceConfig = {
+      Type = "simple";
+      ExecStart = pkgs.writeShellScript "exec-start" ''
+        ${pkgs.bluez}/bin/bluetoothctl <<EOF
+        discoverable on
+        pairable on
+        EOF
+
+        ${pkgs.coreutils}/bin/yes | ${pkgs.bluez-tools}/bin/bt-agent -c NoInputNoOutput
+      '';
+      ExecStop = pkgs.writeShellScript "exec-stop" ''
+        kill -s SIGINT $MAINPID
+      '';
+      Restart = "on-failure";
+    };
+  };
+
+  systemd.services.bluealsa-aplay = {
+    wantedBy = [
+      "multi-user.target"
+    ];
+    serviceConfig = {
+      DynamicUser = true;
+      Type = "simple";
+      ExecStart = "${pkgs.bluez-alsa}/bin/bluealsa-aplay --profile-a2dp --pcm=default:CARD=bluetooth 00:00:00:00:00:00";
+      Restart = "on-failure";
+      SupplementaryGroups = [ "audio" ];
+    };
+  };
+
+  systemd.services.bluealsa-a2dp = {
+    wantedBy = [
+      "multi-user.target"
+    ];
+    serviceConfig = {
+      Type = "simple";
+      ExecStart = "${pkgs.bluez-alsa}/bin/bluealsa -p a2dp-sink";
+      Restart = "on-failure";
+    };
+  };
+}

hosts/iron/services/snapcast/default.nix

@@ -0,0 +1,10 @@
+{
+  imports = [
+    ./alsa.nix
+    ./bluetooth-sink.nix
+    ./ledfx.nix
+    ./mopidy.nix
+    ./snapclient.nix
+    ./snapserver.nix
+  ];
+}

hosts/iron/services/snapcast/ledfx.nix

@@ -1,6 +1,6 @@
 args@{ lib, pkgs, config, custom-utils, ... }:
 let
-  interfaces = import ../interfaces.nix;
+  interfaces = import ../../interfaces.nix;
 in
 {
   networking.firewall.interfaces."${interfaces.lan}".allowedTCPPorts = [
@@ -49,9 +49,4 @@ in
       StateDirectoryMode = "0755";
     };
   };
-
-  boot.kernelModules = [ "snd-aloop" ];
-  boot.extraModprobeConfig = ''
-    options snd-aloop id=ledfx enable=1 pcm_substreams=1
-  '';
 }

hosts/iron/services/snapcast/mopidy.nix

@@ -1,6 +1,6 @@
 args@{ lib, pkgs, config, custom-utils, ... }:
 let
-  interfaces = import ../interfaces.nix;
+  interfaces = import ../../interfaces.nix;
   mopidyConfig = {
     audio.output = "audioresample ! audioconvert ! audio/x-raw,rate=48000,channels=2,format=S16LE ! wavenc ! filesink location=/run/snapserver/mopidy.fifo";
     file.enabled = false;

hosts/iron/services/snapcast/snapserver.nix

@@ -1,7 +1,7 @@
 args@{ lib, pkgs, config, custom-utils, ... }:
 let
-  ports = import ../ports.nix args;
-  interfaces = import ../interfaces.nix;
+  ports = import ../../ports.nix args;
+  interfaces = import ../../interfaces.nix;
 in
 {
   services.snapserver = {
@@ -9,7 +9,7 @@ in
     streams = {
       default = {
         type = "meta";
-        location = "meta:///hass/airplay/mopidy";
+        location = "meta:///hass/bluetooth/airplay/mopidy";
       };
       mopidy = {
         type = "pipe";
@@ -19,6 +19,13 @@ in
         type = "pipe";
         location = "/run/snapserver/hass.fifo";
       };
+      bluetooth = {
+        location = "";
+        type = "alsa";
+        query = {
+          device = "hw:bluetooth,1";
+        };
+      };
       airplay = {
         type = "airplay";
         location = lib.getExe' pkgs.shairport-sync "shairport-sync";
@@ -29,10 +36,7 @@ in
     };
   };
 
-  #systemd.services.snapserver = {
-  #requires = [config.systemd.services.mopidy.name];
-  #after = [config.systemd.services.mopidy.name];
-  #};
+  systemd.services.snapserver.serviceConfig.SupplementaryGroups = [ "audio" ];
 
   services.home-assistant.config.media_player = [
     {