refactor: split server modules into smaller more manageable files

modules/nixos-modules/server/searx/default.nix

@@ -0,0 +1,71 @@
+{
+  config,
+  lib,
+  inputs,
+  ...
+}: {
+  imports = [
+    ./proxy.nix
+  ];
+
+  options.services.searx = {
+    subdomain = lib.mkOption {
+      type = lib.types.str;
+      description = "subdomain of base domain that searx will be hosted at";
+      default = "searx";
+    };
+  };
+
+  config = lib.mkIf config.services.searx.enable {
+    sops.secrets = {
+      "services/searx" = {
+        sopsFile = "${inputs.secrets}/defiant-services.yaml";
+      };
+    };
+
+    services.searx = {
+      environmentFile = config.sops.secrets."services/searx".path;
+
+      # Rate limiting
+      limiterSettings = {
+        real_ip = {
+          x_for = 1;
+          ipv4_prefix = 32;
+          ipv6_prefix = 56;
+        };
+
+        botdetection = {
+          ip_limit = {
+            filter_link_local = true;
+            link_token = true;
+          };
+        };
+      };
+
+      settings = {
+        server = {
+          port = 8083;
+          secret_key = "@SEARXNG_SECRET@";
+        };
+
+        # Search engine settings
+        search = {
+          safe_search = 2;
+          autocomplete_min = 2;
+          autocomplete = "duckduckgo";
+        };
+
+        # Enabled plugins
+        enabled_plugins = [
+          "Basic Calculator"
+          "Hash plugin"
+          "Tor check plugin"
+          "Open Access DOI rewrite"
+          "Hostnames plugin"
+          "Unit converter plugin"
+          "Tracker URL remover"
+        ];
+      };
+    };
+  };
+}