From 04ec7debc9aaa195468cc02fdca9ac85300b6aab Mon Sep 17 00:00:00 2001
From: ooks-io <ooks@protonmail.com>
Date: Sun, 30 Jul 2023 21:59:08 +1200
Subject: [PATCH] auto-upgrade added

---
 system/common/global/auto-upgrade.nix | 31 +++++++++++++++++++++++++++
 system/common/global/default.nix      |  1 +
 2 files changed, 32 insertions(+)
 create mode 100644 system/common/global/auto-upgrade.nix

diff --git a/system/common/global/auto-upgrade.nix b/system/common/global/auto-upgrade.nix
new file mode 100644
index 0000000..05bd6a9
--- /dev/null
+++ b/system/common/global/auto-upgrade.nix
@@ -0,0 +1,31 @@
+{ config, inputs, pkgs, lib, ... }:
+
+let
+  inherit (config.networking) hostName;
+  isClean = inputs.self ? rev;
+in
+{
+  system.autoUpgrade = {
+    enable = isClean;
+    dates = "hourly";
+    flags = [
+      "--refresh"
+    ];
+    flake = "github:ooks-io/nix#${hostName};
+  };
+
+# Only run if current config (self) is older than the new one.
+
+  systemd.services.nixos-upgrade = lib.mkIf config.system.autoUpgrade.enable {
+    serviceConfig.ExecCondition = lib.getExe (
+      pkgs.writeShellScriptBin "check-date" ''
+        lastModified() {
+          nix flake metadata "$1" --refresh --json | ${lib.getExe pkgs.jq} '.lastModified'
+        }
+        test "$(lastModified "${config.system.autoUpgrade.flake}")"  -gt "$(lastModified "self")"
+      ''
+    );
+  };
+}
+
+
diff --git a/system/common/global/default.nix b/system/common/global/default.nix
index c3fb1f7..65babec 100644
--- a/system/common/global/default.nix
+++ b/system/common/global/default.nix
@@ -7,6 +7,7 @@
     ./security.nix
     ./systemdboot.nix
     ./pipewire.nix
+  # ./auto-upgrade.nix # still needs some work
     ] ++ (builtins.attrValues outputs.nixosModules);
 
   home-manager.extraSpecialArgs = { inherit inputs outputs; };