[fronius] Verify battery control time of use successfully set (openhab#18131)

Signed-off-by: Florian Hotze <[email protected]>

Author: florian-h05

bundles/org.openhab.binding.fronius/src/main/java/org/openhab/binding/fronius/internal/api/FroniusBatteryControl.java

@@ -26,6 +26,7 @@
 import org.eclipse.jetty.client.HttpClient;
 import org.eclipse.jetty.http.HttpHeader;
 import org.eclipse.jetty.http.HttpMethod;
+import org.openhab.binding.fronius.internal.api.dto.inverter.PostConfigResponse;
 import org.openhab.binding.fronius.internal.api.dto.inverter.batterycontrol.ScheduleType;
 import org.openhab.binding.fronius.internal.api.dto.inverter.batterycontrol.TimeOfUseRecord;
 import org.openhab.binding.fronius.internal.api.dto.inverter.batterycontrol.TimeOfUseRecords;
@@ -120,8 +121,13 @@ private void setTimeOfUse(TimeOfUseRecords records)
 
         // Set the time of use settings
         String json = gson.toJson(records);
-        FroniusHttpUtil.executeUrl(HttpMethod.POST, timeOfUseUri.toString(), headers,
+        String responseString = FroniusHttpUtil.executeUrl(HttpMethod.POST, timeOfUseUri.toString(), headers,
                 new ByteArrayInputStream(json.getBytes()), "application/json", API_TIMEOUT);
+        PostConfigResponse response = gson.fromJson(responseString, PostConfigResponse.class);
+        if (!response.writeSuccess().contains("timeofuse")) {
+            LOGGER.debug("{}", responseString);
+            throw new FroniusCommunicationException("Failed to write configuration to inverter");
+        }
         LOGGER.trace("Time of Use settings set successfully");
     }
 

bundles/org.openhab.binding.fronius/src/main/java/org/openhab/binding/fronius/internal/api/dto/inverter/PostConfigResponse.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2010-2025 Contributors to the openHAB project
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.openhab.binding.fronius.internal.api.dto.inverter;
+
+import java.util.List;
+
+/**
+ * Record representing the response of a POST request to a <code>/config</code> endpoint.
+ *
+ * @author Florian Hotze - Initial contribution
+ */
+public record PostConfigResponse(List<String> errors, List<String> permissionFailure, List<String> unknownNodes,
+        List<String> validationErrors, List<String> writeFailure, List<String> writeSuccess) {
+}