massicot: add vaultwarden server

modules/nixos/default.nix

@@ -2,5 +2,6 @@
 {
   imports = [
     ./restic.nix
+    ./vaultwarden.nix
   ];
 }

modules/nixos/vaultwarden.nix

@@ -0,0 +1,47 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  cfg = config.custom.vaultwarden;
+in
+{
+  options = {
+    custom.vaultwarden = {
+      enable = mkEnableOption "vaultwarden server";
+      domain = mkOption {
+        type = types.str;
+        default = "bitwarden.example.com";
+        description = "Domain name of the vaultwarden server";
+      };
+      caddy = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Enable Caddy as reverse proxy";
+      };
+      # TODO: mailserver support
+    };
+  };
+  config = {
+    services.vaultwarden = mkIf cfg.enable {
+      enable = true;
+      dbBackend = "sqlite";
+      config = {
+        DOMAIN = "https://${cfg.domain}";
+        SIGNUPS_ALLOWED = false;
+
+        ROCKET_ADDRESS = "127.0.0.1";
+        ROCKET_PORT = 8222;
+
+        ROCKET_LOG = "critical";
+      };
+    };
+    services.caddy = mkIf cfg.caddy {
+      enable = true;
+      virtualHosts."https://${cfg.domain}".extraConfig = ''
+        reverse_proxy ${config.services.vaultwarden.config.ROCKET_ADDRESS}:${toString config.services.vaultwarden.config.ROCKET_PORT}
+      '';
+    };
+  };
+}
+