GetYouTubeUserVideosTask.java

package com.androguide.apkreator.helpers.youtube;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * This is the task that will ask YouTube for a list of videos for a specified
 * user</br> This class implements Runnable meaning it will be ran on its own
 * Thread</br> Because it runs on it's own thread we need to pass in an object
 * that is notified when it has finished
 *
 * @author paul.blundell
 */
public class GetYouTubeUserVideosTask implements Runnable {
    // A reference to retrieve the data when this task finishes
    public static final String LIBRARY = "Library";
    // A handler that will be notified when the task is finished
    private final Handler replyTo;
    // The user we are querying on YouTube for videos
    private final String username;
    private int startIndex, totalAmount, amountToLoad;

    /**
     * Don't forget to call run(); to start this task
     *
     * @param replyTo  - the handler you want to receive the response when this task
     *                 has finished
     * @param username - the username of who on YouTube you are browsing
     */
    public GetYouTubeUserVideosTask(Handler replyTo, String username, int startIndex, int amountToLoad) {
        this.replyTo = replyTo;
        this.username = username;
        this.startIndex = startIndex;
        this.amountToLoad = amountToLoad;
    }

    @Override
    public void run() {
        try {
            // Get a httpclient to talk to the internet
            HttpClient client = new DefaultHttpClient();
            // Perform a GET request to YouTube for a JSON list of all the
            // videos by a specific user
            HttpUriRequest request = new HttpGet(
                    "https://gdata.youtube.com/feeds/api/videos?author="
                            + username + "&start-index=" + startIndex + "&max-results=" + amountToLoad + "&orderby=published&v=2&alt=jsonc");
            Log.e("request: ", "REQUESTED: " +  "https://gdata.youtube.com/feeds/api/videos?author="
                    + username + "&start-index=" + startIndex + "&max-results=" + amountToLoad + "&orderby=published&v=2&alt=jsonc");
            // Get the response that YouTube sends back
            HttpResponse response = client.execute(request);
            // Convert this response into a readable string
            String jsonString = StreamUtils.convertToString(response
                    .getEntity().getContent());
            // Create a JSON object that we can use from the String
            JSONObject json = new JSONObject(jsonString);

            // For further information about the syntax of this request and
            // JSON-C
            // see the documentation on YouTube
            // http://code.google.com/apis/youtube/2.0/developers_guide_jsonc.html

            // Get our search result items
            JSONArray jsonArray = json.getJSONObject("data").getJSONArray("items");
            totalAmount = json.getJSONObject("data").getInt("totalItems");
            Log.e("Server Response", jsonArray.toString() + "");

            // Create a list to store are videos in
            List<Video> videos = new ArrayList<Video>();
            // Loop round our JSON list of videos creating Video objects to use
            // within our app
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject = jsonArray.getJSONObject(i);
                // The title of the video
                String title = jsonObject.getString("title");
                String description = jsonObject.getString("description");
                String uploaded = jsonObject.getString("uploaded");
                int duration = jsonObject.getInt("duration");

                int rating;
                try {
                    rating = jsonObject.getInt("rating");
                } catch (Exception e) {
                    rating = 5;
                }
                int likes;

                try {
                    likes = jsonObject.getInt("likeCount");
                } catch (Exception e) {
                    likes = 0;
                }

                int comments;
                try {
                    comments = jsonObject.getInt("commentCount");
                } catch (Exception e) {
                    comments = 0;
                }

                // The url link back to YouTube, this checks if it has a mobile
                // url
                // if it doesnt it gets the standard url
                String url;
                try {
                    url = jsonObject.getJSONObject("player")
                            .getString("mobile");
                } catch (JSONException ignore) {
                    url = jsonObject.getJSONObject("player").getString(
                            "default");
                }
                // A url to the thumbnail image of the video
                // We will use this later to get an image using a Custom
                // ImageView
                // Found here
                // http://blog.blundell-apps.com/imageview-with-loading-spinner/
                String thumbUrl = jsonObject.getJSONObject("thumbnail")
                        .getString("sqDefault");

                // Create the video object and add it to our list
                videos.add(new Video(title, description, url, thumbUrl, uploaded, duration, rating, likes, comments));
            }
            // Create a library to hold our videos
            Library lib = new Library(username, videos);
            // Pack the Library into the bundle to send back to the Activity
            Bundle data = new Bundle();
            data.putSerializable(LIBRARY, lib);
            data.putInt("TOTAL_ITEMS", totalAmount);

            // Send the Bundle of data (our Library) back to the handler (our
            // Activity)
            Message msg = Message.obtain();

            if (msg != null) {
                msg.setData(data);
                replyTo.sendMessage(msg);
            }

            // We don't do any error catching, just nothing will happen if this
            // task falls over
            // an idea would be to reply to the handler with a different message
            // so your Activity can act accordingly
        } catch (ClientProtocolException e) {
            LogYoutube.e("Feck", e);
        } catch (IOException e) {
            LogYoutube.e("Feck", e);
        } catch (JSONException e) {
            LogYoutube.e("Feck", e);
        }
    }
}