modules: vale init

outputs/modules/home-manager/vale/default.nix

@@ -0,0 +1,119 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  inherit (lib) filterAttrs mapAttrs mkEnableOption mkOption mkIf;
+  inherit (lib.generators) toINIWithGlobalSection;
+  inherit (lib.types) attrsOf submodule listOf str enum package nullOr;
+
+  filterNullRec = let
+    # helper to check if a value should be kept
+    isNonNull = value:
+      if builtins.isAttrs value
+      then filterNullRec value != {}
+      else value != null;
+  in
+    attrs:
+      filterAttrs
+      (_: isNonNull)
+      (mapAttrs (
+          name: value:
+            if builtins.isAttrs value
+            then filterNullRec value
+            else value
+        )
+        attrs);
+
+  listToStr = list: builtins.concatStringsSep "," list;
+  availableStyles = [
+    "alex"
+    "google"
+    "joblint"
+    "proselint"
+    "write-good"
+    "readability"
+    "microsoft"
+  ];
+  formatOptions = submodule {
+    freeformType = attrsOf str;
+    options = {
+      BasedOnStyles = mkOption {
+        type = nullOr (listOf str);
+        default = null;
+        apply = listToStr;
+      };
+      BlockIgnores = mkOption {
+        type = nullOr str;
+        default = null;
+      };
+      TokenIgnores = mkOption {
+        type = nullOr str;
+        default = null;
+      };
+      CommentDelimiters = mkOption {
+        type = nullOr str;
+        default = null;
+      };
+      Transform = mkOption {
+        type = nullOr str;
+        default = null;
+      };
+    };
+  };
+
+  cfg = config.programs.vale;
+in {
+  options.programs.vale = {
+    enable = mkEnableOption "Enable vale linter";
+    package = mkOption {
+      type = package;
+      default = pkgs.vale;
+    };
+    styles = mkOption {
+      type = listOf (enum availableStyles);
+      default = [];
+      description = "Style packages to include.";
+    };
+    globalSettings = {
+      MinAlertLevel = mkOption {
+        type = enum [
+          "suggestion"
+          "warning"
+          "error"
+        ];
+        default = "suggestion";
+        description = "Set the minimum alert level that Vale will report.";
+      };
+      IgnoredScopes = mkOption {
+        type = nullOr (listOf str);
+        default = null;
+        description = "Specifies inline-level HTML tags to ignore.";
+        apply = v:
+          if v != null
+          then listToStr
+          else null;
+      };
+    };
+    formatSettings = mkOption {
+      type = nullOr (attrsOf formatOptions);
+      default = null;
+    };
+  };
+  config = mkIf cfg.enable {
+    home.packages = [
+      (cfg.package.withStyles (
+        styles:
+          map (name: styles.${name}) config.programs.vale.styles
+      ))
+    ];
+    xdg.configFile."vale/.vale.ini".text = toINIWithGlobalSection {} {
+      globalSection = filterNullRec cfg.globalSettings;
+      sections =
+        if cfg.formatSettings != null
+        then filterNullRec cfg.formatSettings
+        else {};
+    };
+  };
+}