{ lib, pkgs, config, ... }: let
  inherit (lib) mkIf mkEnableOption mkOption types;
  cfg = config.chuj.stuff.firefox;
  user = config.chuj.system.user;
in {
  options.chuj.stuff.firefox = {
    enable = mkEnableOption "firefox";
  };

  config = mkIf cfg.enable {
    home-manager.users.${user}.programs.firefox = {
      enable = true;
      policies = {
        DisableTelemetry = true;
        DisableFirefoxStudies = true;
        EnableTrackingProtection = {
          Value = true;
          Locked = true;
          Cryptomining = true;
          Fingerprinting = true;
        };
        DisablePocket = true;
        DisableFirefoxAccounts = true;
        DisableAccounts = true;
        DisableFirefoxScreenshots = true;
        OverridePostUpdatePage = "";
        DontCheckDefaultBrowser = true;
        DisplayBookmarksToolbar = "always";
        DisplayMenuBar = "default-off";
        SearchBar = "unified";
        DefaultDownloadDirectory = config.home-manager.users.${user}.xdg.userDirs.download;
        ExtensionSettings = {
          # ublock origin
          "uBlock0@raymondhill.net" = {
            install_url = "https://addons.mozilla.org/firefox/downloads/latest/ublock-origin/latest.xpi";
            installation_mode = "normal_installed";
          };
          # youtube redux
          "{2d4c0962-e9ff-4cad-8039-9a8b80d9b8b6}" = {
            install_url = "https://addons.mozilla.org/firefox/downloads/file/4224361/latest.xpi";
            installation_mode = "normal_installed";
          };
          # sponsorblock
          "sponsorBlocker@ajay.app" = {
            install_url = "https://addons.mozilla.org/firefox/downloads/file/4251917/latest.xpi";
            installation_mode = "normal_installed";
          };
          # legacy wikipedia layout
          "{484f3bc9-b13b-4498-8ea6-124c199c5ca8}" = {
            install_url = "https://addons.mozilla.org/firefox/downloads/file/4100662/latest.xpi";
            installation_mode = "normal_installed";
          };
        };
      };
      profiles.${user} = {
        id = 0;
        isDefault = true;
        search = {
          default = "envs.net - SearXNG";
          force = true;
          engines = {
            "envs.net - SearXNG" = {
              urls = [ { template = "https://searx.envs.net/searxng/search?q={searchTerms}"; } ];
              icon = "https://envs.net/favicon.ico";
              iconUpdateURL = "https://envs.net/favicon.ico";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@sx" ];
            };

            # searx sometimes sucks
            "Google".metaData.alias = "@g";

            "Wikipedia (en)".metaData.alias = "@w";
            "Wikipedia (pl)" = {
              urls = [ { template = "https://pl.wikipedia.org/w/index.php?search={searchTerms}"; } ];
              icon = "https://pl.wikipedia.org/static/favicon/wikipedia.ico";
              iconUpdateURL = "https://pl.wikipedia.org/static/favicon/wikipedia.ico";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@wpl" ];
            };

            "Nix Packages" = {
              urls = [ { template = "https://search.nixos.org/packages?channel=unstable&query={searchTerms}"; } ];
              icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
              definedAliases = [ "@np" ];
            };
            "Nix Options" = {
              urls = [ { template = "https://search.nixos.org/options?channel=unstable&query={searchTerms}"; } ];
              icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
              definedAliases = [ "@no" ];
            };
            "Home Manger" = {
              urls = [ { template = "https://home-manager-options.extranix.com/?release=master&query={searchTerms}"; } ];
              icon = "https://home-manager-options.extranix.com/images/favicon.png";
              iconUpdateURL = "https://home-manager-options.extranix.com/images/favicon.png";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@hm" ];
            };
            "Arch Wiki" = {
              urls = [ { template = "https://wiki.archlinux.org/index.php?search={searchTerms}"; } ];
              icon = "https://wiki.archlinux.org/favicon.ico";
              iconUpdateURL = "https://wiki.archlinux.org/favicon.ico";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@aw" ];
            };
            "NixOS Wiki" = {
              urls = [ { template = "https://wiki.nixos.org/w/index.php?search={searchTerms}"; } ];
              icon = "https://nixos.wiki/favicon.png";
              iconUpdateURL = "https://nixos.wiki/favicon.png";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@nw" ];
            };
            "Noogle" = {
              urls = [ { template = "https://noogle.dev/q?term={searchTerms}"; } ];
              icon = "${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
              definedAliases = [ "@ng" ];
            };
            "Wolfram Alpha" = {
              urls = [ { template = "https://www.wolframalpha.com/input?i={searchTerms}"; } ];
              icon = "https://www.wolframalpha.com/_next/static/images/favicon_1zbE9hjk.ico";
              iconUpdateURL = "https://www.wolframalpha.com/_next/static/images/favicon_1zbE9hjk.ico";
              updateInterval = 24 * 60 * 60 * 1000;
              definedAliases = [ "@wa" ];
            };

            # the rest can fuck off
            "Bing".metaData.hidden = true;
            "DuckDuckGo".metaData.hidden = true;
            "eBay".metaData.hidden = true; # ??? who up ebaying they firegfox
          };
        };
        settings = {
          "extensions.activeThemeID" = "firefox-compact-dark@mozilla.org";
          "services.sync.prefs.sync.extensions.activeThemeID" = "false";
          "middlemouse.paste" = "false";
          "browser.download.dir" = config.home-manager.users.${user}.xdg.userDirs.download;
          # https://git.jacekpoz.pl/jacekpoz/niksos/src/branch/master/modules/gui/firefox.nix#L405
          # but modified (a bit)
          "browser.aboutConfig.showWarning" = false;
          "browser.startup.page" = 3;
          "browser.startup.homepage" = "about:home";
          "browser.newtabpage.enabled" = true;
          "browser.newtabpage.activity-stream.showSponsored" = false;
          "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
          "browser.newtabpage.activity-stream.default.sites" = "";
          "extensions.getAddons.showPane" = false;
          "extensions.htmlaboutaddons.recommendations.enabled" = false;
          "browser.discovery.enabled" = false;
          "extensions.unifiedExtensions.enabled" = false;
          "datareporting.policy.dataSubmissionEnabled" = false;
          "datareporting.healthreport.uploadEnabled" = false;
          "toolkit.telemetry.unified" = false;
          "toolkit.telemetry.enabled" = false;
          "toolkit.telemetry.server" = "data:,";
          "toolkit.telemetry.archive.enabled" = false;
          "toolkit.telemetry.newProfilePing.enabled" = false;
          "toolkit.telemetry.shutdownPingSender.enabled" = false;
          "toolkit.telemetry.updatePing.enabled" = false;
          "toolkit.telemetry.bhrPing.enabled" = false;
          "toolkit.telemetry.firstShutdownPing.enabled" = false;
          "toolkit.telemetry.coverage.opt-out" = true;
          "toolkit.coverage.endpoint.base" = "";
          "browser.ping-centre.telemetry" = false;
          "browser.newtabpage.activity-stream.feeds.telemetry" = false;
          "browser.newtabpage.activity-stream.telemetry" = false;
          "app.shield.optoutstudies.enabled" = false;
          "app.normandy.enabled" = false;
          "app.normandy.api_url" = "";
          "breakpad.reportURL" = "";
          "browser.tabs.crashReporting.sendReport" = false;
          "browser.crashReports.unsubmittedCheck.enabled" = false;
          "browser.crashReports.unsubmittedCheck.autoSubmit2" = false;
          "captivedetect.canonicalURL" = "";
          "network.captive-portal-service.enabled" = false;
          "network.connectivity-service.enabled" = false;
          "browser.safebrowsing.malware.enabled" = false;
          "browser.safebrowsing.phishing.enabled" = false;
          "browser.safebrowsing.downloads.enabled" = false;
          "browser.safebrowsing.downloads.remote.enabled" = false;
          "browser.safebrowsing.downloads.remote.url" = "";
          "browser.safebrowsing.downloads.remote.block_potentially_unwanted" = false;
          "browser.safebrowsing.downloads.remote.block_uncommon" = false;
          "browser.safebrowsing.allowOverride" = false;
          "privacy.resistFingerprinting.block_mozAddonManager" = true;

          "gfx.webrender.all" = true;
          # "media.ffmpeg.vaapi.enabled" = true;

          # "identity.sync.tokenserver.uri" = "https://ffsync.jacekpoz.pl/1.0/sync/1.5";

          "dom.private-attribution.submission.enabled" = false;
        };
      };
    };
  };
}