GetLikeDataTask.java

package com.ved.musicmapapp.providers;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.protocol.HTTP;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.AsyncTask;
import android.util.Log;

import com.ved.musicmapapp.Objects.Artist;
import com.ved.musicmapapp.Objects.Song;
import com.ved.musicmapapp.Objects.User;
import com.ved.musicmapapp.utils.LikeDataSort;
import com.ved.musicmapapp.utils.Statics;

public class GetLikeDataTask extends AsyncTask<Void, Void, String> {
	private Activity activity;
	private int totalLike = 0;
	private String TAG = "";
	// private ProgressDialog mLoadingDialog;

	private SharedPreferences prefs;
	private Editor edt;

	public GetLikeDataTask(Activity activity) {
		Log.i("check","In GetLikeDataTask");

		this.activity = activity;
		// mLoadingDialog = new ProgressDialog(activity);
		// mLoadingDialog.setMessage("Getting data...");
		// mLoadingDialog.setCancelable(false);

		prefs = activity
				.getSharedPreferences("MUSIC_MAP", Context.MODE_PRIVATE);
		edt = prefs.edit();
	}

	@Override
	protected void onPreExecute() {
		if (null == Statics.likeDatas)
			Statics.likeDatas = new ArrayList<Artist>();
	}

	@Override
	protected String doInBackground(Void... params) {
		try {

			if (!Statics.isNetworkConnected(activity)) {
				getData(prefs.getString("LAST_LIKEDATA", ""));
				return null;
			}
			HttpParams httpParameters = new BasicHttpParams();
			int timeoutConnection = 20000;
			HttpConnectionParams.setConnectionTimeout(httpParameters,
					timeoutConnection);
			int timeoutSocket = 20000;
			HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
			HttpClient httpclient = new DefaultHttpClient(httpParameters);
			HttpPost httppost = new HttpPost(Statics.WS_PATH
					+ "getLikeData.php");
			List<NameValuePair> nvps = new ArrayList<NameValuePair>();
			nvps.add(new BasicNameValuePair("fbid", prefs
					.getString("FB_ID", "")));
			httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

			HttpResponse response = httpclient.execute(httppost);

			HttpEntity entity = response.getEntity();
			if (entity != null) {
				// get the response content as a string
				InputStream instream = entity.getContent();
				BufferedReader reader = new BufferedReader(
						new InputStreamReader(instream, "UTF-8"));
				String line;
				StringBuilder sb = new StringBuilder("");
				while ((line = reader.readLine()) != null) {
					sb.append(line + "\n");
				}

				// if(prefs.getString("LAST_LIKEDATA", "").length()>0 &&
				// sb.toString().trim().equals(prefs.getString("LAST_LIKEDATA",
				// ""))) return "CANCEL";

				edt.putString("LAST_LIKEDATA", sb.toString().trim());
				edt.commit();

				getData(sb.toString());
			}
		} catch (UnsupportedEncodingException e1) {
			Log.e("Exception", "" + e1.getMessage());
			return e1.getMessage();
			// e1.printStackTrace();
		} catch (ClientProtocolException e1) {
			Log.e("ClientProtocolException", "" + e1.getMessage());
			return e1.getMessage();
			// e1.printStackTrace();
		} catch (IOException e1) {
			Log.e("IOException", "" + e1.getMessage());
			e1.printStackTrace();
			return e1.getMessage();			
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return "OK";
	}

	private void getData(String json) throws JSONException {
		Statics.likeDatas.clear();

		JSONArray jArray = new JSONArray(json);
		for (int i = 0; i < jArray.length(); i++) {
			if (isCancelled()) {
				Log.i("CANCELLED", TAG);

				Statics.likeDatas.clear();
				break;
			}

			JSONObject job = jArray.getJSONObject(i);

			Artist art = new Artist();
			art.setID(job.getInt("id"));
			art.setName(job.getString("name_cleaned"));
			art.setAvatar(job.getString("avatar"));
			art.setLikeTime(job.getLong("likeTime"));

			JSONArray sArray = job.getJSONArray("songs");
			ArrayList<Song> songs = new ArrayList<Song>();
			for (int j = 0; j < sArray.length(); j++) {
				JSONObject sjob = sArray.getJSONObject(j);
				Song s = new Song();
				s.setTitle(sjob.getString("title_cleaned"));

				JSONArray uArray = sjob.getJSONArray("users");
				ArrayList<User> users = new ArrayList<User>();
				for (int k = 0; k < uArray.length(); k++) {
					JSONObject ujob = uArray.getJSONObject(k);
					User u = new User();
					u.setFbid(ujob.getString("fbid"));

					users.add(u);

				}

				s.setUserLiked(users);

				songs.add(s);

				totalLike++;
			}

			art.setSongs(songs);

			Statics.likeDatas.add(art);

		}

		if (null != Statics.curUser) {
			Statics.curUser.setTotalLike(totalLike);
		}
	}

	@Override
	protected void onPostExecute(String result) {
		Collections.sort(Statics.likeDatas, new LikeDataSort());
		onSuccess();
	}

	public void onSuccess() {
	}
}