From 386acab0240534658b285705145425ae4515e977 Mon Sep 17 00:00:00 2001
From: Nikolaos Karaolidis <nick@karaolidis.com>
Date: Wed, 31 Jul 2024 10:13:36 +0100
Subject: [PATCH] Add ntp

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>
---
 hosts/common/system/configs/ntp/default.nix      |  4 ++++
 hosts/common/system/configs/timezone/default.nix | 14 ++++++++++++++
 hosts/common/system/configs/timezone/timezone.sh |  7 +++++++
 hosts/eirene/default.nix                         |  4 ++--
 4 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 hosts/common/system/configs/ntp/default.nix
 create mode 100644 hosts/common/system/configs/timezone/default.nix
 create mode 100644 hosts/common/system/configs/timezone/timezone.sh

diff --git a/hosts/common/system/configs/ntp/default.nix b/hosts/common/system/configs/ntp/default.nix
new file mode 100644
index 0000000..87a9511
--- /dev/null
+++ b/hosts/common/system/configs/ntp/default.nix
@@ -0,0 +1,4 @@
+{ ... }:
+{
+  services.ntp.enable = true;
+}
diff --git a/hosts/common/system/configs/timezone/default.nix b/hosts/common/system/configs/timezone/default.nix
new file mode 100644
index 0000000..5ab764e
--- /dev/null
+++ b/hosts/common/system/configs/timezone/default.nix
@@ -0,0 +1,14 @@
+{ lib, pkgs, ... }:
+{
+  networking.networkmanager.dispatcherScripts = [
+    {
+      source = lib.meta.getExe (
+        pkgs.writeShellApplication {
+          name = "timezone-sync";
+          runtimeInputs = with pkgs; [ curl ];
+          text = builtins.readFile ./timezone.sh;
+        }
+      );
+    }
+  ];
+}
diff --git a/hosts/common/system/configs/timezone/timezone.sh b/hosts/common/system/configs/timezone/timezone.sh
new file mode 100644
index 0000000..4854001
--- /dev/null
+++ b/hosts/common/system/configs/timezone/timezone.sh
@@ -0,0 +1,7 @@
+case "$2" in
+  connectivity-change)
+    if timezone=$(curl --fail https://ipapi.co/timezone); then
+      timedatectl set-timezone "$timezone"
+    fi
+    ;;
+esac
diff --git a/hosts/eirene/default.nix b/hosts/eirene/default.nix
index 960c8b0..cff5147 100644
--- a/hosts/eirene/default.nix
+++ b/hosts/eirene/default.nix
@@ -16,12 +16,14 @@
     ../common/system/configs/nix
     ../common/system/configs/nix-ld
     ../common/system/configs/nixpkgs
+    ../common/system/configs/ntp
     ../common/system/configs/pipewire
     ../common/system/configs/plymouth
     ../common/system/configs/ranger
     ../common/system/configs/sops
     ../common/system/configs/ssh
     ../common/system/configs/system
+    ../common/system/configs/timezone
     ../common/system/configs/tmux
     ../common/system/configs/tree
     ../common/system/configs/users
@@ -32,7 +34,5 @@
   ];
 
   i18n.defaultLocale = "en_US.UTF-8";
-  time.timeZone = "Europe/London";
-
   sops.defaultSopsFile = ./secrets/secrets.yaml;
 }