/*
 * 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.jmeter.report.processor.graph.impl;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.apache.commons.lang3.StringUtils;
import org.apache.jmeter.report.core.ConvertException;
import org.apache.jmeter.report.core.Converters;
import org.apache.jmeter.report.core.Sample;
import org.apache.jmeter.report.processor.MapResultData;
import org.apache.jmeter.report.processor.MeanAggregatorFactory;
import org.apache.jmeter.report.processor.SampleConsumer;
import org.apache.jmeter.report.processor.ValueResultData;
import org.apache.jmeter.report.processor.graph.AbstractGraphConsumer;
import org.apache.jmeter.report.processor.graph.AbstractOverTimeGraphConsumer;
import org.apache.jmeter.report.processor.graph.AbstractSeriesSelector;
import org.apache.jmeter.report.processor.graph.GraphValueSelector;
import org.apache.jmeter.report.processor.graph.GroupInfo;
import org.apache.jmeter.report.processor.graph.TimeStampKeysSelector;
import org.apache.jmeter.save.CSVSaveService;

/**
 * The class CustomGraphConsumer is added by the custom Graphs plugin.
 * It provides all the graphs the user defined in user.properties.
 *
 * @since 5.0
 */

public class CustomGraphConsumer extends AbstractOverTimeGraphConsumer implements SampleConsumer {

    public static final String RESULT_Y_AXIS = "Y_Axis"; //$NON-NLS-1$
    public static final String RESULT_X_AXIS = "X_Axis"; //$NON-NLS-1$
    public static final String RESULT_SAMPLE_VARIABLE_NAME = "sample_Metric_Name"; //$NON-NLS-1$
    public static final String RESULT_CONTENT_MESSAGE = "content_Message"; //$NON-NLS-1$
    public static final String REPORT_GENERATOR_PROPERTIES = "jmeter.reportgenerator.graph.customGraph.property"; //$NON-NLS-1$

    private static final Set<String> NATIVE_VARIABLES =
            new HashSet<>(Arrays.asList(CSVSaveService.DATA_TYPE,
                    CSVSaveService.FAILURE_MESSAGE, CSVSaveService.LABEL,
                    CSVSaveService.RESPONSE_CODE, CSVSaveService.RESPONSE_MESSAGE,
                    CSVSaveService.SUCCESSFUL, CSVSaveService.THREAD_NAME,
                    CSVSaveService.TIME_STAMP, CSVSaveService.CSV_ELAPSED,
                    CSVSaveService.CSV_BYTES, CSVSaveService.CSV_SENT_BYTES,
                    CSVSaveService.CSV_THREAD_COUNT1, CSVSaveService.CSV_THREAD_COUNT2,
                    CSVSaveService.CSV_SAMPLE_COUNT, CSVSaveService.CSV_ERROR_COUNT,
                    CSVSaveService.CSV_URL, CSVSaveService.CSV_FILENAME,
                    CSVSaveService.CSV_LATENCY, CSVSaveService.CSV_CONNECT_TIME,
                    CSVSaveService.CSV_ENCODING, CSVSaveService.CSV_HOSTNAME,
                    CSVSaveService.CSV_IDLETIME));

    private String yAxis;
    private String xAxis;
    private String contentMessage;
    private String sampleVariableName;
    private boolean isNativeSampleVariableName = false;

    /**
     * Only used for junit tests.
     * Indicates if the sampleVariableName
     * is native
     *
     * @return the nativeSampleVariableName
     */
    public boolean getIsNativeSampleVariableName() {
        return isNativeSampleVariableName;
    }

    /**
     * Gets the Y Axis.
     *
     * @return the yAxis
     */
    public String getYAxis() {
        return yAxis;
    }

    /**
     * Gets the X Axis.
     *
     * @return the xAxis
     */
    public String getXAxis() {
        return xAxis;
    }

    /**
     * Sets the yAxis.
     *
     * @param axis the yAxis to set
     */
    public void setYAxis(String axis) {
        yAxis = axis;
    }

    /**
     * Sets the xAxis.
     *
     * @param axis the xAxis to set
     */
    public void setXAxis(String axis) {
        xAxis = axis;
    }

    /**
     * Sets the contentMessage.
     *
     * @param message the message to set
     */
    public void setContentMessage(String message) {
        contentMessage = message;
    }

    /**
     * Gets the content message.
     *
     * @return the contentMessage
     */
    public String getContentMessage() {
        return contentMessage;
    }

    /**
     * Gets the sampleVariableName.
     *
     * @return the sampleVariableName
     */
    public String getSampleVariableName() {
        return sampleVariableName;
    }

    /**
     * Sets the sampleVariableName.
     * Sets the boolean isNativesSampleVariableName
     *
     * @param sampleVarName the sampleVariableName to set
     */
    public void setSampleVariableName(String sampleVarName) {
        sampleVariableName = sampleVarName;
        isNativeSampleVariableName = NATIVE_VARIABLES.contains(sampleVarName);
    }


    @Override
    protected void initializeExtraResults(MapResultData parentResult) {
        parentResult.setResult(RESULT_CTX_GRANULARITY, new ValueResultData(getGranularity()));
        parentResult.setResult(RESULT_Y_AXIS, new ValueResultData(getYAxis()));
        parentResult.setResult(RESULT_X_AXIS, new ValueResultData(getXAxis()));
        parentResult.setResult(RESULT_SAMPLE_VARIABLE_NAME, new ValueResultData(getSampleVariableName()));
        parentResult.setResult(RESULT_CONTENT_MESSAGE, new ValueResultData(getContentMessage()));
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.apache.jmeter.report.csv.processor.impl.AbstractOverTimeGraphConsumer
     * #createTimeStampKeysSelector()
     */
    @Override
    protected TimeStampKeysSelector createTimeStampKeysSelector() {
        TimeStampKeysSelector keysSelector = new TimeStampKeysSelector();
        keysSelector.setSelectBeginTime(false);
        return keysSelector;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.apache.jmeter.report.csv.processor.impl.AbstractGraphConsumer#
     * createGroupInfos()
     */
    @Override
    protected Map<String, GroupInfo> createGroupInfos() {
        AbstractSeriesSelector seriesSelector = new AbstractSeriesSelector() {
            @Override
            public Iterable<String> select(Sample sample) {
                return Collections.singletonList(sampleVariableName);
            }
        };

        GraphValueSelector graphValueSelector = (series, sample) -> {
            String value;
            if (isNativeSampleVariableName) {
                value = sample.getData(sampleVariableName);
            } else {
                value = sample.getData(CSVSaveService.VARIABLE_NAME_QUOTE_CHAR
                        + sampleVariableName
                        + CSVSaveService.VARIABLE_NAME_QUOTE_CHAR);
            }

            if (StringUtils.isEmpty(value) || "null".equals(value)) {
                return null;
            }

            try {
                return Converters.convert(Double.class, value);
            } catch (ConvertException e) {
                throw new IllegalArgumentException("Double converter failed", e);
            }
        };

        return Collections.singletonMap(
                AbstractGraphConsumer.DEFAULT_GROUP,
                new GroupInfo(
                        new MeanAggregatorFactory(),
                        seriesSelector,
                        // We ignore Transaction Controller results
                        graphValueSelector, false, false));
    }
}
