{ 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 = with pkgs; [ fcitx5-rime ];
          description = ''
            Enabled Fcitx5 addons.
          '';
        };
      };
    };

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

      environment.variables = {
        GTK_IM_MODULE = "fcitx";
        QT_IM_MODULE = "fcitx";
        XMODIFIERS = "@im=fcitx";
      };
    };
  }