Configure Minecraft server options

The server configuration is currently disabled due to
Infinidoge/nix-minecraft#60

hosts/nullbox/hardware-configuration.nix

@@ -47,6 +47,12 @@
       options = [ "subvol=@mcserver" ];
     };
 
+  fileSystems."/srv/mcserver/.snapshots" =
+    { device = "/dev/disk/by-uuid/7204ff85-6404-4bd7-ba0d-3fb23a5cf52c";
+      fsType = "btrfs";
+      options = [ "subvol=snapshots/@mcserver" ];
+    };
+
   swapDevices = [ ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking

hosts/nullbox/mcserver.nix

@@ -1,7 +1,78 @@
 { pkgs, lib, config, ... }:
+let
+  cfg = config.services.minecraft-servers;
+in
 {
   config = {
-    fileSystems."/srv/mcserver".options = [ "compress=zstd" "nofail" ];
+    fileSystems = {
+      "/srv/mcserver".options = [ "compress=zstd" "nofail" ];
+      "/srv/mcserver/.snapshots".options = [ "compress=zstd" "nofail" ];
+    };
     networking.firewall.trustedInterfaces = [ "wg0" ];
+
+    users = {
+      users = {
+        nullbite.extraGroups = [ "minecraft" ];
+      };
+    };
+
+    services.snapper = {
+      configs.mcserver = {
+        FSTYPE = "btrfs";
+        SUBVOLUME = "/srv/mcserver";
+        TIMELINE_CREATE = true;
+        TIMELINE_CLEANUP = true;
+        TIMELINE_MIN_AGE = 1800;
+        TIMELINE_LIMIT_HOURLY = 36;
+        TIMELINE_LIMIT_DAILY = 14;
+        TIMELINE_LIMIT_WEEKLY = 4;
+        TIMELINE_LIMIT_MONTHLY = 12;
+        TIMELINE_LIMIT_YEARLY = 10000;
+      };
+    };
+
+    services.minecraft-servers = {
+      enable = true;
+      eula = true;
+      dataDir = "/srv/mcserver";
+      servers = {
+        minecraft-nixtest = let
+          self = cfg.servers.minecraft-nixtest;
+          package = pkgs.quiltServers.quilt-1_20_1.override { loaderVersion = "0.21.0"; };
+          modpack = pkgs.fetchPackwizModpack {
+            url = "https://gitea.protogen.io/nullbite/notlite/raw/branch/release/1.20.1/pack.toml";
+            packHash = "sha256-N3Pdlqte8OYz6wz3O/TSG75FMAV+XWAipqoXsYbcYDQ=";
+          };
+        in {
+          enable = false;
+          inherit package;
+          autoStart = self.enable;
+          whitelist = {
+            YzumThreeEye = "3dad78e8-6979-404f-820e-952ce20964a0";
+            NullBite = "e24e8e0e-7540-4126-b737-90043155bcd4";
+            Silveere = "468554f1-27cd-4ea1-9308-3dd14a9b1a12";
+          };
+          symlinks = let
+            symlinkFolders = lib.genAttrs [ "mods" "kubejs" ] (x: "${modpack}/${x}");
+          in symlinkFolders;
+          serverProperties = {
+            # allow NCR
+            enforce-secure-profile = false;
+            white-list = true;
+            enforce-whitelist = true;
+
+            motd = "owo what's this (nix edition)";
+
+            enable-rcon = false;
+            difficulty = "hard";
+            hardcore = false;
+            online-mode = true;
+            pvp = true;
+
+            sync-chunk-writes = false;
+          };
+        };
+      };
+    };
   };
 }