com.fb.audiencenetwork.scrollapp.NasaRequester.java Source code

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Here is the source code for com.fb.audiencenetwork.scrollapp.NasaRequester.java

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/*
 * Copyright (c) 2016 Razeware LLC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.fb.audiencenetwork.scrollapp;

import android.app.Activity;
import android.content.Context;

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

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class NasaRequester {

    public interface NasaResponse {
        void receivedPost(NasaPost post);
    }

    private Calendar mCalendar;
    private SimpleDateFormat mDateFormat;
    private NasaResponse mResponseListener;
    private Context mContext;
    private OkHttpClient mClient;
    private static final String BASE_URL = "https://api.nasa.gov/planetary/apod?";
    private static final String DATE_PARAMETER = "date=";
    private static final String API_KEY_PARAMETER = "&api_key=";
    private static final String MEDIA_TYPE_KEY = "media_type";
    private static final String MEDIA_TYPE_VIDEO_VALUE = "video";
    private boolean mLoadingData;

    public boolean isLoadingData() {
        return mLoadingData;
    }

    public NasaRequester(Activity activity) {
        mCalendar = Calendar.getInstance();
        mDateFormat = new SimpleDateFormat("yyyy-MM-dd");
        mResponseListener = (NasaResponse) activity;
        mContext = activity.getApplicationContext();
        mClient = new OkHttpClient();
        mLoadingData = false;
    }

    public void getPost() throws IOException {
        String date = mDateFormat.format(mCalendar.getTime());
        String urlRequest = BASE_URL + DATE_PARAMETER + date + API_KEY_PARAMETER
                + mContext.getString(R.string.api_key);
        Request request = new Request.Builder().url(urlRequest).build();
        mLoadingData = true;

        mClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                mLoadingData = false;
                e.printStackTrace();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                try {
                    JSONObject photoJSON = new JSONObject(response.body().string());
                    mCalendar.add(Calendar.DAY_OF_YEAR, -1);
                    if (!photoJSON.getString(MEDIA_TYPE_KEY).equals(MEDIA_TYPE_VIDEO_VALUE)) {
                        NasaPost post = new NasaPost(photoJSON);
                        mResponseListener.receivedPost(post);
                        mLoadingData = false;
                    } else {
                        getPost();
                    }
                } catch (JSONException e) {
                    mLoadingData = false;
                    e.printStackTrace();
                }
            }
        });
    }
}