{
  config,
  inputs,
  pkgs,
  lib,
  ...
}:
{
  options.custom.programs.firefox.enable = lib.mkEnableOption "";

  config = lib.mkIf config.custom.programs.firefox.enable {
    programs.firefox = {
      enable = true;

      profiles.default = {
        settings =
          let
            uiState = ''{"placements":{"widget-overflow-fixed-list":[],"unified-extensions-area":["sponsorblocker_ajay_app-browser-action","_762f9885-5a13-4abd-9c77-433dcd38b8fd_-browser-action","_446900e4-71c2-419f-a6a7-df9c091e268b_-browser-action","_74145f27-f039-47ce-a470-a662b129930a_-browser-action","ublock0_raymondhill_net-browser-action"],"nav-bar":["back-button","forward-button","stop-reload-button","customizableui-special-spring1","urlbar-container","customizableui-special-spring2","save-to-pocket-button","downloads-button","fxa-toolbar-menu-button","unified-extensions-button","sidebar-button"],"toolbar-menubar":["menubar-items"],"TabsToolbar":["firefox-view-button","tabbrowser-tabs","new-tab-button","alltabs-button"],"PersonalToolbar":["personal-bookmarks"]},"seen":["developer-button","sponsorblocker_ajay_app-browser-action","_762f9885-5a13-4abd-9c77-433dcd38b8fd_-browser-action","_446900e4-71c2-419f-a6a7-df9c091e268b_-browser-action","_74145f27-f039-47ce-a470-a662b129930a_-browser-action","ublock0_raymondhill_net-browser-action"],"dirtyAreaCache":["nav-bar","unified-extensions-area","PersonalToolbar","TabsToolbar","toolbar-menubar"],"currentVersion":20,"newElementCount":5}'';
          in
          {
            "intl.accept_languages" = "en-us,en,de-de,de";
            "browser.uiCustomization.state" = uiState;
            "sidebar.position_start" = false;
            "browser.toolbars.bookmarks.visibility" = "always";
            "browser.bookmarks.restore_default_bookmarks" = false;
            "browser.bookmarks.file" = "";
            "media.videocontrols.picture-in-picture.video-toggle.enabled" = false;
            "general.autoScroll" = true;
            "middlemouse.paste" = false;
            "signon.rememberSignons" = false;
            "extensions.formautofill.creditCards.enabled" = false;
            "browser.tabs.loadBookmarksInBackground" = true;
            "browser.tabs.groups.enabled" = true;
            "browser.uidensity" = 1;
            "sidebar.revamp" = false;
          };

        extraConfig = builtins.readFile "${inputs.betterfox}/user.js";
      };

      policies.ExtensionSettings =
        let
          extension = shortId: uuid: {
            name = uuid;
            value = {
              install_url = "file:///${
                inputs.firefox-addons.packages.${pkgs.system}.${shortId}
              }/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/${uuid}.xpi";
              installation_mode = "force_installed";
              default_area = "menupanel";
            };
          };
        in
        {
          "*".installation_mode = "blocked";
        }
        // lib.listToAttrs [
          (extension "dictionary-german" "de-DE@dictionaries.addons.mozilla.org")
          (extension "ublock-origin" "uBlock0@raymondhill.net")
          (extension "bitwarden" "{446900e4-71c2-419f-a6a7-df9c091e268b}")
          (extension "return-youtube-dislikes" "{762f9885-5a13-4abd-9c77-433dcd38b8fd}")
          (extension "sponsorblock" "sponsorBlocker@ajay.app")
          (extension "clearurls" "{74145f27-f039-47ce-a470-a662b129930a}")
        ];
    };
  };
}