Add Home Manager service integration

home-manager/music-light.nix

@@ -0,0 +1,108 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.programs.music-light;
+
+  toggleScript = pkgs.writeShellScriptBin "toggle-music-light" ''
+    if systemctl --user is-active --quiet music-light.service; then
+      exec systemctl --user stop music-light.service
+    else
+      exec systemctl --user start music-light.service
+    fi
+  '';
+
+  startScript = pkgs.writeShellScriptBin "start-music-light" ''
+    exec systemctl --user start music-light.service
+  '';
+
+  stopScript = pkgs.writeShellScriptBin "stop-music-light" ''
+    exec systemctl --user stop music-light.service
+  '';
+
+  statusScript = pkgs.writeShellScriptBin "music-light-status" ''
+    if systemctl --user is-active --quiet music-light.service; then
+      echo on
+    else
+      echo off
+    fi
+  '';
+in
+{
+  options.programs.music-light = {
+    enable = lib.mkEnableOption "music-light integration managed by Home Manager";
+
+    scriptDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/music-light";
+      example = "/home/ltadeu6/music-light";
+      description = "Directory that contains `luz-musica.py`.";
+    };
+
+    pythonPath = lib.mkOption {
+      type = lib.types.str;
+      default = "/usr/bin/python3";
+      example = "/usr/bin/python3";
+      description = "Path to the host Python interpreter used by the service.";
+    };
+
+    playerctlPath = lib.mkOption {
+      type = lib.types.str;
+      default = "/usr/bin/playerctl";
+      example = "/usr/bin/playerctl";
+      description = "Path to the host `playerctl` binary used by the service.";
+    };
+
+    enableDesktopEntry = lib.mkOption {
+      type = lib.types.bool;
+      default = true;
+      description = "Whether to create a desktop launcher that toggles the service.";
+    };
+
+    autostart = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = "Whether to start `music-light.service` automatically at login.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [
+      toggleScript
+      startScript
+      stopScript
+      statusScript
+    ];
+
+    xdg.desktopEntries = lib.mkIf cfg.enableDesktopEntry {
+      music-light-toggle = {
+        name = "Music Light Toggle";
+        comment = "Start or stop the music-light sync service";
+        exec = "${toggleScript}/bin/toggle-music-light";
+        terminal = false;
+        categories = [ "Utility" ];
+      };
+    };
+
+    systemd.user.services.music-light = {
+      Unit = {
+        Description = "Sync Home Assistant light color with the active media artwork";
+        After = [ "graphical-session.target" "network-online.target" ];
+        PartOf = [ "graphical-session.target" ];
+      };
+
+      Service = {
+        Type = "simple";
+        WorkingDirectory = cfg.scriptDir;
+        ExecStart = "${cfg.pythonPath} ${cfg.scriptDir}/luz-musica.py";
+        Restart = "on-failure";
+        RestartSec = 3;
+        Environment = [
+          "PATH=/usr/local/bin:/usr/bin:/bin"
+          "PLAYERCTL_BIN=${cfg.playerctlPath}"
+        ];
+      };
+
+      Install.WantedBy = lib.mkIf cfg.autostart [ "default.target" ];
+    };
+  };
+}