feat(refactor): ready for merge

lib/server/default.nix

@@ -1,5 +1,26 @@
-{
-  imports = [
-    ./serviceurl
-  ];
+{lib}: let
+  server = {
+    mkDomain = config: service: let
+      localDomain = config.settings.accounts.domains.local;
+      publicDomain = config.settings.accounts.domains.public;
+      tailscaleDomain = "ts.${publicDomain}";
+    in
+      if service.exposure == "tunnel"
+      then publicDomain
+      else if service.exposure == "tailscale"
+      then tailscaleDomain
+      else localDomain;
+
+    mkFullDomain = config: service: let
+      domain = server.mkDomain config service;
+    in "${service.subdomain}.${domain}";
+
+    mkHostDomain = config: service: let
+      domain = server.mkDomain config service;
+    in "${domain}";
+
+    mkSubDomain = config: service: "${service.subdomain}";
+  };
+in {
+  server = server;
 }