org.digitalcampus.oppia.task.APIRequestTask.java Source code

Introduction

Here is the source code for org.digitalcampus.oppia.task.APIRequestTask.java

Source

/* 
 * This file is part of OppiaMobile - http://oppia-mobile.org/
 * 
 * OppiaMobile 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.
 * 
 * OppiaMobile 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 OppiaMobile. If not, see <http://www.gnu.org/licenses/>.
 */

package org.digitalcampus.oppia.task;

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

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpGet;
import org.digitalcampus.mobile.learningGF.R;
import org.digitalcampus.oppia.listener.APIRequestListener;
import org.digitalcampus.oppia.utils.HTTPConnectionUtils;

import android.content.Context;
import android.os.AsyncTask;

public class APIRequestTask extends AsyncTask<Payload, Object, Payload> {

    public static final String TAG = APIRequestTask.class.getSimpleName();
    protected Context ctx;
    private APIRequestListener requestListener;

    public APIRequestTask(Context ctx) {
        this.ctx = ctx;
    }

    @Override
    protected Payload doInBackground(Payload... params) {

        Payload payload = params[0];
        String responseStr = "";

        HTTPConnectionUtils client = new HTTPConnectionUtils(ctx);
        String url = client.getFullURL(payload.getUrl());
        HttpGet httpGet = new HttpGet(url);
        httpGet.addHeader(client.getAuthHeader());

        try {

            // make request
            HttpResponse response = client.execute(httpGet);

            // read response
            InputStream content = response.getEntity().getContent();
            BufferedReader buffer = new BufferedReader(new InputStreamReader(content), 1024);
            String s = "";
            while ((s = buffer.readLine()) != null) {
                responseStr += s;
            }

            switch (response.getStatusLine().getStatusCode()) {
            // TODO check the unauthorised response code...
            case 400: // unauthorised
                payload.setResult(false);
                payload.setResultResponse(ctx.getString(R.string.error_login));
                break;
            case 200:
                payload.setResult(true);
                payload.setResultResponse(responseStr);
                break;
            default:
                payload.setResult(false);
                payload.setResultResponse(ctx.getString(R.string.error_connection));
            }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
            payload.setResult(false);
            payload.setResultResponse(ctx.getString(R.string.error_connection));
        } catch (IOException e) {
            e.printStackTrace();
            payload.setResult(false);
            payload.setResultResponse(ctx.getString(R.string.error_connection));
        }
        return payload;
    }

    @Override
    protected void onPostExecute(Payload response) {
        synchronized (this) {
            if (requestListener != null) {
                requestListener.apiRequestComplete(response);
            }
        }
    }

    public void setAPIRequestListener(APIRequestListener srl) {
        synchronized (this) {
            requestListener = srl;
        }
    }
}