onlyoffice: add module (#6667)

modules/programs/onlyoffice.nix

@@ -0,0 +1,50 @@
+{ lib, pkgs, config, ... }:
+
+let
+  inherit (lib)
+    types isBool boolToString concatStringsSep mapAttrsToList mkIf
+    mkEnableOption mkPackageOption mkOption;
+
+  cfg = config.programs.onlyoffice;
+
+  attrToString = name: value:
+    let newvalue = if (isBool value) then (boolToString value) else value;
+    in "${name}=${newvalue}";
+
+  getFinalConfig = set:
+    (concatStringsSep "\n" (mapAttrsToList attrToString set)) + "\n";
+in {
+  meta.maintainers = with lib.hm.maintainers; [ aguirre-matteo ];
+
+  options.programs.onlyoffice = {
+    enable = mkEnableOption "onlyoffice";
+
+    package =
+      mkPackageOption pkgs "onlyoffice-desktopeditors" { nullable = true; };
+
+    settings = mkOption {
+      type = with types; attrsOf (either bool str);
+      default = { };
+      example = ''
+        UITheme = "theme-contrast-dark";
+        editorWindowMode = false;
+        forcedRtl = false;
+        maximized = true;
+        titlebar = "custom";
+      '';
+      description = ''
+        Configuration settings for Onlyoffice.
+
+        All configurable options can be deduced by enabling them through the
+        GUI and observing the changes in ~/.config/onlyoffice/DesktopEditors.conf.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = lib.mkIf (cfg.package != null) [ cfg.package ];
+
+    xdg.configFile."onlyoffice/DesktopEditors.conf".source =
+      pkgs.writeText "DesktopEditors.conf" (getFinalConfig cfg.settings);
+  };
+}