/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
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package org.apache.streampipes.processors.transformation.flink.processor.rename;

import org.apache.streampipes.client.StreamPipesClient;
import org.apache.streampipes.container.config.ConfigExtractor;
import org.apache.streampipes.model.DataProcessorType;
import org.apache.streampipes.model.graph.DataProcessorDescription;
import org.apache.streampipes.model.graph.DataProcessorInvocation;
import org.apache.streampipes.model.schema.PropertyScope;
import org.apache.streampipes.sdk.builder.ProcessingElementBuilder;
import org.apache.streampipes.sdk.builder.StreamRequirementsBuilder;
import org.apache.streampipes.sdk.extractor.ProcessingElementParameterExtractor;
import org.apache.streampipes.sdk.helpers.*;
import org.apache.streampipes.sdk.utils.Assets;
import org.apache.streampipes.wrapper.flink.FlinkDataProcessorDeclarer;
import org.apache.streampipes.wrapper.flink.FlinkDataProcessorRuntime;

public class FieldRenamerController extends FlinkDataProcessorDeclarer<FieldRenamerParameters> {

  private static final String CONVERT_PROPERTY = "convert-property";
  private static final String FIELD_NAME = "field-name";

  @Override
  public DataProcessorDescription declareModel() {
    return ProcessingElementBuilder.create("org.apache.streampipes.processors.transformation.flink.field-renamer")
            .category(DataProcessorType.TRANSFORM)
            .withLocales(Locales.EN)
            .withAssets(Assets.DOCUMENTATION, Assets.ICON)
            .requiredStream(StreamRequirementsBuilder
                    .create()
                    .requiredPropertyWithUnaryMapping(EpRequirements.anyProperty(), Labels.withId
                            (CONVERT_PROPERTY), PropertyScope.NONE)
                    .build())
            .requiredTextParameter(Labels.withId(FIELD_NAME))
            .outputStrategy(OutputStrategies.transform(TransformOperations
                    .dynamicRuntimeNameTransformation(CONVERT_PROPERTY, FIELD_NAME)))
            .build();
  }

  @Override
  public FlinkDataProcessorRuntime<FieldRenamerParameters> getRuntime(DataProcessorInvocation graph,
                                                                      ProcessingElementParameterExtractor extractor,
                                                                      ConfigExtractor configExtractor,
                                                                      StreamPipesClient streamPipesClient) {
    String oldPropertyName = extractor.mappingPropertyValue(CONVERT_PROPERTY);
    String newPropertyName = extractor.singleValueParameter(FIELD_NAME, String.class);

    return new FieldRenamerProgram(
            new FieldRenamerParameters(graph, oldPropertyName, newPropertyName), configExtractor, streamPipesClient);
  }

}
