{ config, pkgs, lib, ... }@args:

{
  programs.firefox = {
    enable = true;
    
    profiles.yanlin = {
      id = 0;
      isDefault = true;
      name = "yanlin";
      
      # Extensions
      extensions = {
        packages = let
          firefox-addons = args.firefox-addons or null;
        in
          if firefox-addons != null then
            with firefox-addons.packages.${pkgs.system}; [
              ublock-origin
            ]
          else [];
      };
      
      # Bookmarks
      bookmarks = {
        force = true;
        settings = [
          {
            name = "Toolbar";
            toolbar = true;
            bookmarks = [
              {
                name = "My Home";
                url = "https://home.nas.yanlincs.com/lovelace/0";
              }
              {
                name = "Media";
                bookmarks = [
                  {
                    name = "Immich";
                    url = "https://photo.nas.yanlincs.com/photos";
                  }
                  {
                    name = "Plex";
                    url = "https://plex.nas.yanlincs.com";
                  }
                  {
                    name = "Emby";
                    url = "https://emby.nas.yanlincs.com";
                  }
                  {
                    name = "Library";
                    bookmarks = [
                      {
                        name = "Sonnar";
                        url = "https://sonnar.nas.yanlincs.com";
                      }
                      {
                        name = "Radarr";
                        url = "https://radarr.nas.yanlincs.com";
                      }
                      {
                        name = "qBittorrent";
                        url = "https://qbit.nas.yanlincs.com";
                      }
                      {
                        name = "MeTube";
                        url = "https://metube.nas.yanlincs.com";
                      }
                    ];
                  }
                ];
              }
            ];
          }
        ];
      };
      
      # Search configuration
      search = {
        force = true;
        default = "ddg";
        
        engines = {
          "Nix Packages" = {
            urls = [{
              template = "https://search.nixos.org/packages";
              params = [
                { name = "channel"; value = "unstable"; }
                { name = "query"; value = "{searchTerms}"; }
              ];
            }];
            icon = "''${pkgs.nixos-icons}/share/icons/hicolor/scalable/apps/nix-snowflake.svg";
            definedAliases = [ "@np" ];
          };
          
          "NixOS Wiki" = {
            urls = [{ template = "https://wiki.nixos.org/index.php?search={searchTerms}"; }];
            icon = "https://wiki.nixos.org/favicon.png";
            definedAliases = [ "@nw" ];
          };
        };
      };
      
      # Firefox settings
      settings = {
        # General preferences
        "browser.startup.homepage" = "about:home";
        "browser.newtabpage.enabled" = true;
        
        # New tab page - show only search bar
        "browser.newtabpage.activity-stream.feeds.topsites" = false;
        "browser.newtabpage.activity-stream.feeds.section.highlights" = false;
        "browser.newtabpage.activity-stream.feeds.section.topstories" = false;
        "browser.newtabpage.activity-stream.feeds.system.topsites" = false;
        "browser.newtabpage.activity-stream.feeds.system.topstories" = false;
        "browser.newtabpage.activity-stream.showSponsored" = false;
        "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
        
        # Privacy settings
        "privacy.trackingprotection.enabled" = true;
        "privacy.trackingprotection.socialtracking.enabled" = true;
        "privacy.donottrackheader.enabled" = true;
        
        # Performance
        "gfx.webrender.all" = true;
        "media.ffmpeg.vaapi.enabled" = true;
        "media.hardware-video-decoding.force-enabled" = true;
        
        # UI preferences
        "browser.tabs.loadInBackground" = true;
        "browser.ctrlTab.recentlyUsedOrder" = true;
        
        # Bookmarks toolbar (only show on new tab/home page)
        "browser.toolbars.bookmarks.visibility" = "newtab";
        
        # Downloads
        "browser.download.useDownloadDir" = false;
        "browser.download.always_ask_before_handling_new_types" = true;
        
        # Security
        "dom.security.https_only_mode" = true;
        "dom.security.https_only_mode_ever_enabled" = true;
        
        # Disable telemetry
        "datareporting.healthreport.uploadEnabled" = false;
        "datareporting.policy.dataSubmissionEnabled" = 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;
        
        # Disable experiments
        "experiments.activeExperiment" = false;
        "experiments.enabled" = false;
        "experiments.supported" = false;
        "network.allow-experiments" = false;
        
        # Disable Pocket
        "extensions.pocket.enabled" = false;
        "browser.newtabpage.activity-stream.section.highlights.includePocket" = false;
      };
    };
  };
}