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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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package jdk.jfr.cmd;

import java.nio.file.Path;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineManager;

import jdk.jfr.ValueDescriptor;

import jdk.jfr.consumer.RecordedEvent;

import jdk.jfr.consumer.RecordedObject;

import jdk.jfr.consumer.RecordingFile;

import jdk.nashorn.api.scripting.JSObject;

import jdk.test.lib.Asserts;

import jdk.test.lib.process.OutputAnalyzer;

/*

 * @test

 * @key jfr

 * @summary Tests print --json

 *

 * @library /test/lib /test/jdk

 * @modules jdk.scripting.nashorn

 *          jdk.jfr

 *

 * @run main/othervm jdk.jfr.cmd.TestPrintJSON

 */

public class TestPrintJSON {

    public static void main(String... args) throws Exception {

        Path recordingFile = ExecuteHelper.createProfilingRecording().toAbsolutePath();

        OutputAnalyzer output = ExecuteHelper.run("print", "--json", recordingFile.toString());

        String json = output.getStdout();

        // Parse JSON using Nashorn

        String statement = "var jsonObject = " + json;

        ScriptEngineManager factory = new ScriptEngineManager();

        ScriptEngine engine = factory.getEngineByName("nashorn");

        engine.eval(statement);

        JSObject o = (JSObject) engine.get("jsonObject");

        JSObject recording = (JSObject) o.getMember("recording");

        JSObject events = (JSObject) recording.getMember("events");

        // Verify events are equal

        try (RecordingFile rf = new RecordingFile(recordingFile)) {

            for (Object jsonEvent : events.values()) {

                RecordedEvent recordedEvent = rf.readEvent();

                double typeId = recordedEvent.getEventType().getId();

                String startTime = recordedEvent.getStartTime().toString();

                String duration = recordedEvent.getDuration().toString();

                Asserts.assertEquals(typeId, ((Number) ((JSObject) jsonEvent).getMember("typeId")).doubleValue());

                Asserts.assertEquals(startTime, ((JSObject) jsonEvent).getMember("startTime"));

                Asserts.assertEquals(duration, ((JSObject) jsonEvent).getMember("duration"));

                assertEquals(jsonEvent, recordedEvent);

            }

            Asserts.assertFalse(rf.hasMoreEvents(), "Incorrect number of events");

        }

    }

    private static void assertEquals(Object jsonObject, Object jfrObject) throws Exception {

        // Check object

        if (jfrObject instanceof RecordedObject) {

            JSObject values = (JSObject) ((JSObject) jsonObject).getMember("values");

            RecordedObject recObject = (RecordedObject) jfrObject;

            Asserts.assertEquals(values.values().size(), recObject.getFields().size());

            for (ValueDescriptor v : recObject.getFields()) {

                String name = v.getName();

                assertEquals(values.getMember(name), recObject.getValue(name));

                return;

            }

        }

        // Check array

        if (jfrObject != null && jfrObject.getClass().isArray()) {

            Object[] jfrArray = (Object[]) jfrObject;

            JSObject jsArray = (JSObject) jsonObject;

            for (int i = 0; i < jfrArray.length; i++) {

                assertEquals(jsArray.getSlot(i), jfrArray[i]);

            }

            return;

        }

        String jsonText = String.valueOf(jsonObject);

        // Double.NaN / Double.Inifinity is not supported by JSON format,

        // use null

        if (jfrObject instanceof Double) {

            double expected = ((Double) jfrObject);

            if (Double.isInfinite(expected) || Double.isNaN(expected)) {

                Asserts.assertEquals("null", jsonText);

                return;

            }

            double value = Double.parseDouble(jsonText);

            Asserts.assertEquals(expected, value);

            return;

        }

        // Float.NaN / Float.Inifinity is not supported by JSON format,

        // use null

        if (jfrObject instanceof Float) {

            float expected = ((Float) jfrObject);

            if (Float.isInfinite(expected) || Float.isNaN(expected)) {

                Asserts.assertEquals("null", jsonText);

                return;

            }

            float value = Float.parseFloat(jsonText);

            Asserts.assertEquals(expected, value);

            return;

        }

        if (jfrObject instanceof Integer) {

            Integer expected = ((Integer) jfrObject);

            double value = Double.parseDouble(jsonText);

            Asserts.assertEquals(expected.doubleValue(), value);

            return;

        }

        if (jfrObject instanceof Long) {

            Long expected = ((Long) jfrObject);

            double value = Double.parseDouble(jsonText);

            Asserts.assertEquals(expected.doubleValue(), value);

            return;

        }

        String jfrText = String.valueOf(jfrObject);

        Asserts.assertEquals(jfrText, jsonText, "Primitive values don't match. JSON = " + jsonText);

    }

}