fr.syncarnet.tasks.DeletedTasks.java Source code

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Here is the source code for fr.syncarnet.tasks.DeletedTasks.java

Source

/*
 * Copyright (C) 2013-14 Nicolas Miller, Florian Paindorge
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package fr.syncarnet.tasks;

import android.util.Log;

import java.util.UUID;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Date; // rightNow = new Date().getTime(); (In Unix Time)

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.Serializable;

public class DeletedTasks extends ArrayList<UUID> implements Serializable {
    private HashMap<UUID, Long> timestamps = new HashMap<UUID, Long>();
    private static final String TAG = "SynCarnet";

    public boolean add(UUID uuid) {
        timestamps.put(uuid, new Long(new Date().getTime()));
        return super.add(uuid);
    }

    public boolean add(UUID uuid, long timestamp) {
        timestamps.put(uuid, new Long(timestamp));
        return super.add(uuid);
    }

    public long getTimestamp(UUID uuid) {
        return (timestamps.get(uuid)).longValue();
    }

    /**
     * Clear all the deleted tasks older than a given timestamp
     */
    public void clearDeletedTask(long timestamp) {
        for (UUID uuid : this) {
            if (this.getTimestamp(uuid) < timestamp) {
                this.remove(uuid);
            }
        }
    }

    public String jsonify() {
        JSONObject jsonDT = new JSONObject();
        JSONArray jsonUUIDs = new JSONArray();
        JSONArray jsonTimestamps = new JSONArray();
        JSONObject jsonTTemp;
        try {
            for (int i = 0; i < this.size(); i++)
                jsonUUIDs.put(this.get(i).toString());
            jsonDT.put("uuids", jsonUUIDs.toString());
            Log.d(TAG, "Added uuids to json");

            for (Map.Entry<UUID, Long> entry : timestamps.entrySet()) {
                jsonTTemp = new JSONObject();
                UUID key = entry.getKey();
                jsonTTemp.put("uuid", key.toString());
                Long value = entry.getValue();
                jsonTTemp.put("timestamp", value);
                jsonTimestamps.put(jsonTTemp.toString());
            }
            jsonDT.put("timestamps", jsonTimestamps.toString());
            Log.d(TAG, "Added timestamps to json");

            return jsonDT.toString();
        } catch (JSONException e) {
            Log.e(TAG, "Exception while jsonifying");
            return "";
        }
    }

    public void unJsonify(String json) {
        try {
            JSONObject jsonDT = new JSONObject(json);
            JSONArray jsonUUIDs = new JSONArray(jsonDT.getString("uuids"));
            for (int i = 0; i < this.size(); i++)
                this.add(UUID.fromString(jsonUUIDs.getString(i)));
            Log.d(TAG, "Recreated uuids from json");

            JSONArray jsonTimestamps = new JSONArray(jsonDT.getString("timestamps"));
            JSONObject jsonTTemp;
            for (int i = 0; i < jsonTimestamps.length(); i++) {
                jsonTTemp = new JSONObject(jsonTimestamps.getString(i));
                timestamps.put(UUID.fromString(jsonTTemp.getString("uuid")), jsonTTemp.getLong("timestamp"));
            }
            Log.d(TAG, "Recreated timestamps from json");
        } catch (JSONException e) {
            Log.e(TAG, "Exception while unjsonifying");
        }
    }
}