// Copyright (c) 2009 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

package org.chromium.sdk.internal.tools.v8.request;

import java.io.IOException;

import java.io.Writer;

import java.util.HashMap;

import java.util.LinkedHashMap;

import java.util.Map;

import org.json.simple.JSONStreamAware;

import org.json.simple.JSONValue;

/**

 * Represents a generic JSONStreamAware V8 request message (so that it can

 * serialize itself into JSON.)

 */

public class DebuggerMessage implements JSONStreamAware {

  private final int sequence;

  private final String command;

  private final Map<String, Object> arguments = new HashMap<String, Object>();

  public DebuggerMessage(String command) {

    this.sequence = SeqGenerator.getInstance().next();

    this.command = command;

  }

  public Integer getSeq() {

    return sequence;

  }

  public String getType() {

    return V8MessageType.REQUEST.value;

  }

  public String getCommand() {

    return command;

  }

  public Map<String, Object> getArguments() {

    return arguments;

  }

  protected final void putArgument(String key, Object object) {

    if (object != null) {

      arguments.put(key, object);

    }

  }

  private final void putArgumentString(String key, Object object) {

    arguments.put(key, object.toString());

  }

  protected final void putArgumentStringIfNotNull(String key, Object object) {

    if (object != null) {

      putArgumentString(key, object);

    }

  }

  public void writeJSONString(Writer out) throws IOException {

    LinkedHashMap<String, Object> obj = new LinkedHashMap<String, Object>();

    obj.put("seq", sequence);

    obj.put("type", V8MessageType.REQUEST.value);

    obj.put("command", command);

    if (!arguments.isEmpty()) {

      obj.put("arguments", arguments);

    }

    JSONValue.writeJSONString(obj, out);

  }

}