From f540f30f1f3c76b68922550dcf5f78f42732fd37 Mon Sep 17 00:00:00 2001
From: Silvio Ankermann <silvio@booq.org>
Date: Mon, 23 Oct 2023 10:00:02 +0200
Subject: [PATCH] cbatticon: Add support for batteryId

For devices with more than one battery, cbatticon allows to set the
battery ID as optional positional argument. If this argument is not
given, it default to the first battery it would list with `cbatticon
-p`. This commit adds support for the batteryId option to the cbatticon
module.
---
 modules/services/cbatticon.nix | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/modules/services/cbatticon.nix b/modules/services/cbatticon.nix
index 1216878c..1616b2dc 100644
--- a/modules/services/cbatticon.nix
+++ b/modules/services/cbatticon.nix
@@ -24,7 +24,7 @@ let
     ++ optional (cfg.updateIntervalSeconds != null)
     "--update-interval ${toString cfg.updateIntervalSeconds}"
     ++ optional (cfg.hideNotification != null && cfg.hideNotification)
-    "--hide-notification");
+    "--hide-notification" ++ optional (cfg.batteryId != null) cfg.batteryId);
 
 in {
   meta.maintainers = [ maintainers.pmiddend ];
@@ -94,6 +94,15 @@ in {
         default = null;
         description = "Hide the notification popups.";
       };
+
+      batteryId = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          ID of the battery to monitor. List with {command}`cbatticon -p`.
+          Defaults to the first entry in the list.
+        '';
+      };
     };
   };