com.github.dfa.diaspora_android.service.FetchPodsService.java Source code

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Here is the source code for com.github.dfa.diaspora_android.service.FetchPodsService.java

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/*
This file is part of the Diaspora for Android.
    
Diaspora for Android 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.
    
Diaspora for Android 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 the Diaspora for Android.
    
If not, see <http://www.gnu.org/licenses/>.
 */
package com.github.dfa.diaspora_android.service;

import android.app.Service;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.IBinder;
import android.support.v4.content.LocalBroadcastManager;

import com.github.dfa.diaspora_android.data.DiasporaPodList;
import com.github.dfa.diaspora_android.util.AppLog;

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

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import javax.net.ssl.HttpsURLConnection;

import info.guardianproject.netcipher.NetCipher;

public class FetchPodsService extends Service {
    public static final String EXTRA_PODLIST = "pods";
    public static final String MESSAGE_PODS_RECEIVED = "com.github.dfa.diaspora.podsreceived";
    public static final String PODDY_PODLIST_URL = "https://raw.githubusercontent.com/Diaspora-for-Android/diaspora-android/master/app/src/main/res/raw/podlist.json";

    public FetchPodsService() {
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        getPods();
        return super.onStartCommand(intent, flags, startId);
    }

    private void getPods() {
        AsyncTask<Void, Void, DiasporaPodList> getPodsAsync = new AsyncTask<Void, Void, DiasporaPodList>() {
            @Override
            protected DiasporaPodList doInBackground(Void... params) {
                StringBuilder sb = new StringBuilder();
                BufferedReader br = null;
                try {
                    HttpsURLConnection con = NetCipher.getHttpsURLConnection(PODDY_PODLIST_URL);
                    if (con.getResponseCode() == HttpsURLConnection.HTTP_OK) {
                        br = new BufferedReader(new InputStreamReader(con.getInputStream()));
                        String line;
                        while ((line = br.readLine()) != null) {
                            sb.append(line);
                        }

                        // Parse JSON & return pod list
                        JSONObject json = new JSONObject(sb.toString());
                        return new DiasporaPodList().fromJson(json);
                    } else {
                        AppLog.e(this, "Failed to download list of pods");
                    }
                } catch (IOException | JSONException e) {
                    e.printStackTrace();
                } finally {
                    if (br != null) {
                        try {
                            br.close();
                        } catch (IOException ignored) {
                        }
                    }
                }

                // Could not fetch list of pods :(
                return new DiasporaPodList();
            }

            @Override
            protected void onPostExecute(DiasporaPodList pods) {
                if (pods == null) {
                    pods = new DiasporaPodList();
                }
                Intent broadcastIntent = new Intent(MESSAGE_PODS_RECEIVED);
                broadcastIntent.putExtra(EXTRA_PODLIST, pods);
                LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(broadcastIntent);
                stopSelf();
            }
        };
        getPodsAsync.execute();
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

}