diff --git a/src/main.zig b/src/main.zig
index c1e79a1..1514d3a 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -273,6 +273,16 @@ const DeviceShadow = struct {
     pub fn deinit(self: *DeviceShadow) void {
         self.json_data.deinit();
     }
+
+    pub fn format(self: DeviceShadow, writer: *std.Io.Writer) std.Io.Writer.Error!void {
+        try writer.writeAll("Current Shadow State:\n");
+        try writer.print("  heater_serial_number: {?s}\n", .{self.heater_serial_number});
+        try writer.print("  set_recirculation_enabled: {?}\n", .{self.set_recirculation_enabled});
+        try writer.print("  recirculation_enabled: {?}\n", .{self.recirculation_enabled});
+        try writer.print("  recirculation_duration: {?}\n", .{self.recirculation_duration});
+        try writer.print("  set_domestic_temperature: {?}\n", .{self.set_domestic_temperature});
+        try writer.print("  operation_enabled: {?}\n", .{self.operation_enabled});
+    }
 };
 
 fn parseDeviceShadow(parsed: json.Parsed(json.Value)) !DeviceShadow {
@@ -413,13 +423,7 @@ pub fn main() !void {
             var status = try getRecirculationStatus(allocator, auth.id_token, sid);
             defer status.deinit();
 
-            try stdout.print("\nCurrent Shadow State:\n", .{});
-            try stdout.print("  heater_serial_number: {?s}\n", .{status.heater_serial_number});
-            try stdout.print("  set_recirculation_enabled: {?}\n", .{status.set_recirculation_enabled});
-            try stdout.print("  recirculation_enabled: {?}\n", .{status.recirculation_enabled});
-            try stdout.print("  recirculation_duration: {?}\n", .{status.recirculation_duration});
-            try stdout.print("  set_domestic_temperature: {?}\n", .{status.set_domestic_temperature});
-            try stdout.print("  operation_enabled: {?}\n", .{status.operation_enabled});
+            try stdout.print("\n{f}", .{status});
 
             const recirc_enabled = status.recirculation_enabled orelse false;