{ username, pkgs, ... }:

{
  environment.systemPackages = with pkgs; [
    tor-browser
    firefox-esr
  ];

  environment.persistence."/nix/config" = {
    users."${username}".directories = [
      ".config/mozilla"
    ];
  };

  environment.etc."firefox/policies/policies.json" = {
    mode = "0444";
    text = ''
      {
        "policies": {
          "EnableTrackingProtection": {
            "Value": true,
            "Cryptomining": true,
            "Fingerprinting": true,
            "EmailTracking": true,
            "Level": "strict"
          },
          "DisableTelemetry": true,
          "DisablePocket": true,
          "DisableFirefoxStudies": true,
          "DisableFirefoxAccounts": false,
          "DisableAccounts": false,
          "DontCheckDefaultBrowser": true,
          "OverrideFirstRunPage": "",
          "OverridePostUpdatePage": "",
          "NoDefaultBookmarks": true,
          "Cookies": {
            "Behavior": "reject-foreign",
            "BehaviorPrivateBrowsing": "reject-foreign"
          },
          "UserMessaging": {
            "WhatsNew": false,
            "ExtensionRecommendations": false,
            "FeatureRecommendations": false,
            "UrlbarInterventions": false,
            "SkipOnboarding": true,
            "MoreFromMozilla": false
          },
          "FirefoxHome": {
            "Search": true,
            "TopSites": true,
            "SponsoredTopSites": false,
            "Highlights": false,
            "Pocket": false,
            "SponsoredPocket": false,
            "Snippets": false,
            "Locked": true
          },
          "SearchSuggestEnabled": false,
          "ShowSearchSuggestionsFirst": false,
          "NewTabPage": false,
          "SearchEngines": {
            "Add": [
              {
                "Name": "Kagi",
                "URLTemplate": "https://kagi.com/search?q={searchTerms}",
                "Method": "GET",
                "IconURL": "https://kagi.com/favicon.ico",
                "Alias": "@k",
                "Default": true
              }
            ],
            "Remove": [
              "Bing",
              "Google",
              "DuckDuckGo",
              "Wikipedia (en)"
            ]
          }
        }
      }
    '';
  };
}