# Hunspell dictionaries, joined into one directory so anything needing a
# dictionary *path* can be pointed at a single store path.
#
# Two consumers, two mechanisms:
#   - LibreOffice needs nothing beyond the package being installed: its wrapper
#     scans `share/hunspell` in every NIX_PROFILES entry.
#   - Gecko apps (LibreWolf, Thunderbird) need `spellchecker.dictionary_path`
#     set explicitly — there is no /usr/share/hunspell on NixOS and wrapFirefox
#     wires up nothing itself. Point that pref at `local.dictionaries.path`.
#
# Chromium-based browsers are NOT served by this: they ignore hunspell and
# fetch their own dictionaries, selected by enterprise policy.
#
# Which languages is a personal choice, so the default is empty; a consumer sets
# `local.dictionaries.packages = [ pkgs.hunspellDicts.de_DE ];`. en-US ships
# inside Firefox/Thunderbird already and does not need listing for those.
{ config, lib, pkgs, ... }:

let
  cfg = config.local.dictionaries;

  joined = pkgs.symlinkJoin {
    name = "hunspell-dicts";
    paths = cfg.packages;
  };
in
{
  options.local.dictionaries = {
    packages = lib.mkOption {
      type = lib.types.listOf lib.types.package;
      default = [ ];
      example = lib.literalExpression "[ pkgs.hunspellDicts.de_DE ]";
      description = ''
        Hunspell dictionary packages to install and expose via
        `local.dictionaries.path`.
      '';
    };

    path = lib.mkOption {
      type = lib.types.str;
      readOnly = true;
      description = ''
        Directory holding every `packages` dictionary. Feed this to
        `spellchecker.dictionary_path` in Gecko apps.
      '';
    };
  };

  config = {
    local.dictionaries.path = "${joined}/share/hunspell";
    home.packages = lib.optional (cfg.packages != [ ]) joined;
  };
}