/*
 * 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.
 *
 */
package org.apache.streampipes.processors.enricher.jvm.processor.jseval;

import org.apache.streampipes.model.DataProcessorType;
import org.apache.streampipes.model.graph.DataProcessorDescription;
import org.apache.streampipes.model.graph.DataProcessorInvocation;
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.CodeLanguage;
import org.apache.streampipes.sdk.helpers.EpRequirements;
import org.apache.streampipes.sdk.helpers.Labels;
import org.apache.streampipes.sdk.helpers.Locales;
import org.apache.streampipes.sdk.helpers.OutputStrategies;
import org.apache.streampipes.sdk.utils.Assets;
import org.apache.streampipes.wrapper.standalone.ConfiguredEventProcessor;
import org.apache.streampipes.wrapper.standalone.declarer.StandaloneEventProcessingDeclarer;

public class JSEvalController extends StandaloneEventProcessingDeclarer<JSEvalParameters> {

    private static final String JS_FUNCTION = "jsFunction";

    @Override
    public DataProcessorDescription declareModel() {
        return ProcessingElementBuilder.create("org.apache.streampipes.processors.enricher.jvm.jseval")
                .category(DataProcessorType.SCRIPTING)
                .withAssets(Assets.DOCUMENTATION, Assets.ICON)
                .withLocales(Locales.EN)
                .requiredStream(StreamRequirementsBuilder
                        .create()
                        .requiredProperty(EpRequirements.anyProperty())
                        .build())
                .requiredCodeblock(Labels.withId(JS_FUNCTION), CodeLanguage.Javascript)
                .outputStrategy(OutputStrategies.userDefined())
                .build();
    }

    @Override
    public ConfiguredEventProcessor<JSEvalParameters> onInvocation(DataProcessorInvocation graph,
                                                                   ProcessingElementParameterExtractor extractor) {
        String code = extractor.codeblockValue(JS_FUNCTION);
        JSEvalParameters parameters = new JSEvalParameters(graph, code);
        return new ConfiguredEventProcessor<>(parameters, JSEval::new);
    }
}
