/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.goanna.sync.repositories;

import java.io.IOException;

import org.json.simple.parser.ParseException;
import org.mozilla.goanna.background.common.log.Logger;
import org.mozilla.goanna.sync.ExtendedJSONObject;
import org.mozilla.goanna.sync.NonObjectJSONException;

public class RepositorySessionBundle {
  public static final String LOG_TAG = RepositorySessionBundle.class.getSimpleName();

  protected static final String JSON_KEY_TIMESTAMP = "timestamp";

  protected final ExtendedJSONObject object;

  public RepositorySessionBundle(String jsonString) throws IOException, ParseException, NonObjectJSONException {
    object = ExtendedJSONObject.parseJSONObject(jsonString);
  }

  public RepositorySessionBundle(long lastSyncTimestamp) {
    object = new ExtendedJSONObject();
    this.setTimestamp(lastSyncTimestamp);
  }

  public long getTimestamp() {
    if (object.containsKey(JSON_KEY_TIMESTAMP)) {
      return object.getLong(JSON_KEY_TIMESTAMP);
    }

    return -1;
  }

  public void setTimestamp(long timestamp) {
    Logger.debug(LOG_TAG, "Setting timestamp to " + timestamp + ".");
    object.put(JSON_KEY_TIMESTAMP, timestamp);
  }

  public void bumpTimestamp(long timestamp) {
    long existing = this.getTimestamp();
    if (timestamp > existing) {
      this.setTimestamp(timestamp);
    } else {
      Logger.debug(LOG_TAG, "Timestamp " + timestamp + " not greater than " + existing + "; not bumping.");
    }
  }

  public String toJSONString() {
    return object.toJSONString();
  }
}