/*
 * Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package li.strolch.service.parameter;

import li.strolch.model.Locator;
import li.strolch.model.StrolchRootElement;
import li.strolch.model.parameter.Parameter;
import li.strolch.persistence.api.StrolchTransaction;
import li.strolch.persistence.api.TxUpdateStrolchRootElementVisitor;
import li.strolch.service.api.AbstractService;
import li.strolch.service.api.ServiceArgument;
import li.strolch.service.api.ServiceResult;
import li.strolch.service.api.ServiceResultState;
import li.strolch.service.parameter.SetParameterService.SetParameterArg;

/**
 * @author Robert von Burg <eitch@eitchnet.ch>
 */
public class SetParameterService extends AbstractService<SetParameterArg, ServiceResult> {

	@Override
	protected ServiceResult getResultInstance() {
		return new ServiceResult(ServiceResultState.FAILED);
	}

	@Override
	public SetParameterArg getArgumentInstance() {
		return new SetParameterArg();
	}

	@Override
	protected ServiceResult internalDoService(SetParameterArg arg) {

		try (StrolchTransaction tx = openArgOrUserTx(arg)) {

			Parameter<?> parameter = tx.findElement(arg.locator);

			if (arg.name != null) {
				parameter.setName(arg.name);
			}
			if (arg.interpretation != null) {
				parameter.setInterpretation(arg.interpretation);
			}
			if (arg.uom != null) {
				parameter.setUom(arg.uom);
			}
			if (arg.hidden != null) {
				parameter.setHidden(arg.hidden);
			}
			if (arg.index != null) {
				parameter.setIndex(arg.index);
			}

			if (arg.valueAsString != null) {
				parameter.setValueFromString(arg.valueAsString);
			}

			StrolchRootElement rootElement = parameter.getRootElement();
			rootElement.accept(new TxUpdateStrolchRootElementVisitor(tx));

			tx.commitOnClose();
		}

		return ServiceResult.success();
	}

	public static class SetParameterArg extends ServiceArgument {
		public static final long serialVersionUID = 1L;
		public Locator locator;

		public String name;
		public String interpretation;
		public String uom;
		public Boolean hidden;
		public Integer index;

		public String valueAsString;
	}
}
