home: wm: i3bar: add VPN blocks

modules/home/wm/default.nix

@@ -36,6 +36,31 @@ in
 
     i3bar = {
       enable = mkRelatedOption "i3bar configuration" [ "i3" ];
+
+      vpn = {
+        enable = my.mkDisableOption "VPN configuration";
+
+        blockConfigs = mkOption {
+          type = with types; listOf (attrsOf str);
+          default = [
+            {
+              active_format = " VPN ";
+              service = "wg-quick-wg";
+            }
+            {
+              active_format = " VPN (LAN) ";
+              service = "wg-quick-lan";
+            }
+          ];
+          example = [
+            {
+              active_format = " WORK ";
+              service = "some-service-name";
+            }
+          ];
+          description = "list of block configurations, merged with the defauls";
+        };
+      };
     };
 
     rofi = {

modules/home/wm/i3bar/default.nix

@@ -59,6 +59,19 @@ in
             {
               block = "disk_space";
             }
+            (lib.optionals cfg.vpn.enable
+              (
+                let
+                  defaults = {
+                    block = "service_status";
+                    active_state = "Good";
+                    inactive_format = "";
+                    inactive_state = "Idle";
+                  };
+                in
+                builtins.map (block: defaults // block) cfg.vpn.blockConfigs
+              )
+            )
             {
               block = "net";
               format = " $icon{| $ssid|} $ip{| $signal_strength|} ";