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{ config, pkgs, lib, ... }:

with lib;

let
  im = config.i18n.inputMethod;
  cfg = im.fcitx5;
  fcitx5Package = pkgs.fcitx5-with-addons.override { inherit (cfg) addons; };
in
{
  options = {
    i18n.inputMethod.fcitx5 = {
      addons = mkOption {
        type = with types; listOf package;
        default = [];
        example = literalExpression "with pkgs; [ fcitx5-rime ]";
        description = lib.mdDoc ''
          Enabled Fcitx5 addons.
        '';
      };
    };
  };

  imports = [
    (mkRemovedOptionModule [ "i18n" "inputMethod" "fcitx5" "enableRimeData" ] ''
      RIME data is now included in `fcitx5-rime` by default, and can be customized using `fcitx5-rime.override { rimeDataPkgs = ...; }`
    '')
  ];

  config = mkIf (im.enabled == "fcitx5") {
    i18n.inputMethod.package = fcitx5Package;

    environment.variables = {
      GTK_IM_MODULE = "fcitx";
      QT_IM_MODULE = "fcitx";
      XMODIFIERS = "@im=fcitx";
      QT_PLUGIN_PATH = [ "${fcitx5Package}/${pkgs.qt6.qtbase.qtPluginPrefix}" ];
    };
  };
}