GetTrackBuyLink.java

package com.ved.musicmapapp.providers;

import java.io.IOException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.util.Log;
import android.widget.Toast;

import com.ved.musicmapapp.R;
import com.ved.musicmapapp.Objects.Song;
import com.ved.musicmapapp.fragments.DigitalTrackFragment;
import com.ved.musicmapapp.utils.XMLParse;

public class GetTrackBuyLink extends AsyncTask<Void, Void, String> {
	String error;
	ProgressDialog mProgressDialog;
	Activity context;
	Song song;

	public GetTrackBuyLink(Activity context, Song song) {
		this.context = context;
		Log.i("check","In GetTrackBuyLink");

		this.song = song;
		mProgressDialog = new ProgressDialog(context);
		mProgressDialog.setMessage("Loading...");
		mProgressDialog.setCancelable(true);
		mProgressDialog
				.setOnCancelListener(new DialogInterface.OnCancelListener() {

					@Override
					public void onCancel(DialogInterface dialog) {
						cancel(true);
					}
				});
	}

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

		try {

			String countryStr = context.getResources().getConfiguration().locale.getCountry().toLowerCase();
			if(!countryStr.equals("us"))
				countryStr = "gb";
			
			StringBuilder url = new StringBuilder(
					GetTrackPreview._7DIGITAL_API_LINK);
			url.append(GetTrackPreview._7DIGITAL_API_TRACK_DETAIL);
			url.append("?trackid=" + song.get7DigigtalTrackId(countryStr));
			url.append("&oauth_consumer_key="
					+ GetTrackPreview._7DIGITAL_API_KEY);

			Log.d("REQUEST", url.toString());

			HttpParams httpParameters = new BasicHttpParams();
			int timeoutConnection = 20000;
			HttpConnectionParams.setConnectionTimeout(httpParameters,
					timeoutConnection);
			int timeoutSocket = 20000;
			HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
			DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
			HttpGet httpGet = new HttpGet(url.toString());

			HttpResponse httpResponse = httpClient.execute(httpGet);
			HttpEntity httpEntity = httpResponse.getEntity();
			String xml = EntityUtils.toString(httpEntity);
			return getBuyLink(xml);

		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	@Override
	protected void onPostExecute(String result) {
		if (mProgressDialog.isShowing())
			mProgressDialog.dismiss();
		
		String countryStr = context.getResources().getConfiguration().locale.getCountry().toLowerCase();
		if(!countryStr.equals("us"))
			countryStr = "gb";

		
		if (result == null) {
			Toast.makeText(context, "Can't get buy link!", Toast.LENGTH_LONG).show();
			song.setBuyLink("",countryStr);
		} else {
			try {
				song.setBuyLink(result,countryStr);
				
				
				DigitalTrackFragment fragment = new DigitalTrackFragment();
				fragment.setUrl(result);
				FragmentTransaction fragmentTransaction = ((FragmentActivity)context)
						.getSupportFragmentManager()
						.beginTransaction();
				fragmentTransaction.replace(R.id.frame_content,
						fragment);
				fragmentTransaction.addToBackStack(null);
				fragmentTransaction.commit();
//				Intent intent = new Intent(Intent.ACTION_VIEW,
//						Uri.parse(result));
//				context.startActivity(intent);

				// update to Server
				new SubmitSongBuyLink().execute(song.getID() + "",
						song.get7DigigtalTrackId(countryStr), result,countryStr);
			} catch (Exception e) {
			}
		}
		super.onPostExecute(result);
	}

	@Override
	protected void onPreExecute() {
		mProgressDialog.show();
		super.onPreExecute();
	}

	@Override
	protected void onCancelled() {
		if (mProgressDialog.isShowing())
			mProgressDialog.dismiss();
		super.onCancelled();
	}

	private String getBuyLink(String xml) {
		Document doc = XMLParse.getDomElement(xml);
		Node result = doc.getFirstChild().getFirstChild();
		NodeList resultNodes = result.getChildNodes();
		int i = 0;
		NodeList realeaseNodes = null;
		while (i < resultNodes.getLength()) {
			if (resultNodes.item(i).getNodeName().equals("release")) {
				realeaseNodes = resultNodes.item(i).getChildNodes();
				break;
			}
			i++;
		}
		String link = null;
		if (realeaseNodes != null) {
			i = 0;
			while (i < realeaseNodes.getLength()) {
				if (realeaseNodes.item(i).getNodeName().equals("url")) {
					link = realeaseNodes.item(i).getTextContent();
					break;
				}
				i++;
			}
		}

		return link;
	}
}