{
  config,
  lib,
  pkgs,
  ...
}:
with lib;
let
  userjs = pkgs.callPackage ./userjs.nix {
    inherit (pkgs.personal.static.userjs) arkenfox;
    inherit (pkgs.lib.personal) toUserJS;
  };
  engines = import ./engines.nix { inherit lib pkgs; };
  extensions = {
    canvasblocker = {
      id = "CanvasBlocker@kkapsner.de";
    };
    url-in-title-keepass = {
      id = "{fcdb71fb-c9e5-48a3-9d04-e32713f5da88}";
    };
    clearurls = {
      id = "{74145f27-f039-47ce-a470-a662b129930a}";
    };
    temporary-containers = {
      id = "{c607c8df-14a7-4f28-894f-29e8722976af}";
    };
    floccus = {
      id = "floccus@handmadeideas.org";
    };
    darkreader = {
      id = "addon@darkreader.org";
    };
    ublock-origin = {
      id = "uBlock0@raymondhill.net";
    };
    firefox-color = {
      id = "FirefoxColor@mozilla.com";
    };
  };

in
{
  config = lib.mkMerge [
    {
      stylix.targets.firefox = {
        colorTheme.enable = true;
        profileNames = [
          "default"
        ];
      };
      programs.firefox = {
        configPath = "${config.xdg.configHome}/mozilla/firefox";
        policies.ExtensionSettings = {
          "*".installation_mode = "blocked";
        }
        // lib.mapAttrs' (name: value: {
          name = value.id;
          value = {
            install_url = "https://addons.mozilla.org/firefox/downloads/latest/${name}/latest.xpi";
            installation_mode = "force_installed";
            updates_disabled = true;
          };
        }) extensions;
        profiles.default = {
          id = 0; # isDefault = true
          extensions = {
            settings."FirefoxColor@mozilla.com" = {
              force = true;
              settings.theme.colors =
                let
                  mkBgColor = lib.mkForce (
                    with config.lib.stylix.colors;
                    {
                      r = base00-rgb-r;
                      g = base00-rgb-g;
                      b = base00-rgb-b;
                    }
                  );
                in
                {
                  frame = mkBgColor;
                  sidebar_border = mkBgColor;
                  popup_border = mkBgColor;
                  tab_baground_separator = mkBgColor;
                  tab_line = mkBgColor;
                  toolbar_field_border_focus = mkBgColor;
                };
            };
          };
          search = {
            force = lib.mkDefault true;
            engines =
              with engines;
              disableDefault
              // {
                inherit Searx;
              }
              // lib.optionalAttrs config.personal.identities.personal personal
              // lib.optionalAttrs config.personal.identities.work work
              // lib.optionalAttrs config.personal.profiles.dev dev;
            default = "Searx";
            order = [
              "Searx"
              "Wikipedia"
            ];
          };
          extraConfig = userjs.default;
        };

      };
    }

    (lib.mkIf config.programs.firefox.enable {
      home.shellAliases.fftmp = "firefox --profile $(mktemp -d)";
      home.sessionVariables.BROWSER = "firefox";
    })
  ];
}