add radish configuration

freun.dev/syncthing.nix

@@ -0,0 +1,33 @@
+{ pkgs, config, lib, ... }:
+let
+  storage_dir = "/mnt/storage/syncthing";
+in
+{
+  services.syncthing = {
+    enable = true;
+    dataDir = "/mnt/storage/syncthing";
+    openDefaultPorts = true;
+  };
+
+  services.caddy.virtualHosts = {
+    "sync.freun.dev".extraConfig = ''
+      reverse_proxy localhost:8384 {
+        header_up Host {upstream_hostport}
+      }
+    '';
+  };
+
+  fileSystems."${storage_dir}" = {
+    device = "//u407959.your-storagebox.de/backup/syncthing";
+    fsType = "cifs";
+    options = let
+      # this line prevents hanging on network split
+      automount_opts = "x-systemd.automount,auto,x-systemd.device-timeout=5s,x-systemd.mount-timeout=5s";
+      uid = builtins.toString config.users.users.syncthing.uid;
+      gid = builtins.toString config.users.groups.syncthing.gid;
+    in ["${automount_opts},credentials=/var/secrets/smb-storage,uid=${uid},gid=${gid}"];
+  };
+
+
+  environment.systemPackages = [ pkgs.cifs-utils ];
+}