Export modules

1 files changed, 71 insertions, 0 deletions

diff --git a/modules/nixos/duksebot/default.nix b/modules/nixos/duksebot/default.nix
new file mode 100644
index 0000000..c1dc5cf
--- /dev/null
+++ b/modules/nixos/duksebot/default.nix
@@ -0,0 +1,71 @@
+# This module defines an on-demand minecraft server service which turns off the
+# server when it's not being used.
+
+{ config, lib, pkgs, modulesPath, ... }:
+
+let
+  inherit (lib) mkIf mkOption mkEnableOption types;
+
+  cfg = config.my.services.duksebot;
+in
+{
+  options.my.services.duksebot = {
+    enable = mkEnableOption "duksebot daily reminder";
+
+    package = mkOption {
+      description = "What package to use";
+      default = pkgs.duksebot;
+      type = types.package;
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # Create a user to run the server under.
+    users.users.duksebot = {
+      description = "Runs daily dukse reminder";
+      group = "duksebot";
+      isSystemUser = true;
+      home = "/srv/duksebot";
+      createHome = true;
+    };
+    users.groups.duksebot = { };
+
+    age.secrets.duksebot-env = {
+      file = ../../../secrets/duksebot.env.age;
+      owner = config.users.users.duksebot.name;
+      group = config.users.users.duksebot.group;
+      mode = "0440";
+    };
+
+    # Create a service which simply runs script. This will be invoked by our timer.
+    systemd.services.duksebot = {
+      serviceConfig = {
+        # We only want to run this once every time the timer triggers it.
+        Type = "oneshot";
+        # Run as the user we created above.
+        User = "duksebot";
+        Group = "duksebot";
+        WorkingDirectory = config.users.users.duksebot.home;
+      };
+      script = ''
+        # Load the secret environment variables.
+        export $(grep -v '^#' ${config.age.secrets.duksebot-env.path} | xargs)
+        # Kick off.
+        exec "${cfg.package}"/bin/duksebot
+      '';
+    };
+
+    # Create a timer to activate our oneshot service.
+    systemd.timers.duksebot = {
+      wantedBy = [ "timers.target" ];
+      partOf = [ "duksebot.service" ];
+      after = [ "network-online.target" ];
+      wants = [ "network-online.target" ]; # FIXME: redundant?
+      timerConfig = {
+        # OnCalendar = "*-*-* 7:00:00";
+        OnCalendar = "*:0/1";
+        Unit = "duksebot.service";
+      };
+    };
+  };
+}