com.microsoft.azure.engagement.ws.VideoParser.java Source code

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Here is the source code for com.microsoft.azure.engagement.ws.VideoParser.java

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// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

package com.microsoft.azure.engagement.ws;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Serializable;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;

import android.util.Log;

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

public final class VideoParser {

    private static final String TAG = VideoParser.class.getSimpleName();

    public static final class VideoItem implements Serializable {

        public final String title;

        public final String description;

        public final String pictureUrl;

        public final String videoUrl;

        public VideoItem(String title, String description, String pictureUrl, String videoUrl) {
            this.title = title;
            this.description = description;
            this.pictureUrl = pictureUrl;
            this.videoUrl = videoUrl;
        }

        /**
         * Method that tests if is an external video or a local one
         *
         * @return The video url nature
         */
        public final boolean isExternalVideo() {
            return videoUrl.startsWith("http://") || videoUrl.startsWith("https://");
        }

        /**
         * Method that tests if is an external image or a local one
         *
         * @return The image url nature
         */
        public final boolean isExternalImage() {
            return pictureUrl.startsWith("http://") || pictureUrl.startsWith("https://");
        }
    }

    /**
     * Method that parses the list of videos
     *
     * @return The list of videos
     * @throws IOException, JSONException
     */
    public static final List<VideoItem> parse(String urlString) throws IOException, JSONException {
        final ArrayList<VideoItem> videoItems = new ArrayList<>();

        final JSONObject object = VideoParser.getJsonObject(urlString);
        if ((object != null) && (object.has("result") == true)) {
            final JSONArray items = object.getJSONArray("result");
            for (int index = 0; index < items.length(); index++) {
                final JSONObject item = items.getJSONObject(index);
                final VideoItem videoItem = new VideoItem(item.getString("title"), item.getString("description"),
                        item.getString("pictureUrl"), item.getString("videoUrl"));
                videoItems.add(videoItem);
            }
        }

        videoItems.add(0, getTheFirstLocalVideoItem());

        return videoItems;
    }

    /**
     * Method that returns the result object
     *
     * @param urlString The url to parse
     * @return The result object
     */
    private static final JSONObject getJsonObject(String urlString) {
        Log.d(VideoParser.TAG, "Parse URL: " + urlString);

        InputStream inputStream = null;

        try {
            final URL url = new URL(urlString);
            final URLConnection urlConnection = url.openConnection();

            inputStream = new BufferedInputStream(urlConnection.getInputStream());
            final BufferedReader reader = new BufferedReader(
                    new InputStreamReader(urlConnection.getInputStream(), "utf-8"), 8);
            final StringBuilder sb = new StringBuilder();

            String line;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            final String json = sb.toString();
            return new JSONObject(json);
        } catch (Exception e) {
            Log.w(VideoParser.TAG, "Failed to parse the json for media list", e);
            return null;
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    Log.w(VideoParser.TAG, "JSON feed closed", e);
                }
            }
        }

    }

    /**
     * Method that creates and returns the first video item
     *
     * @return The first video item
     */
    private static final VideoItem getTheFirstLocalVideoItem() {
        return new VideoItem("Azure Mobile Engagement Overview",
                "Brief overview of Azure Mobile Engagement service and the benefits it provides to the app publishers/marketers.",
                "mobileengagementoverview_960", "mobileengagementoverview_mid");
    }

}