ForumSyncTask.java

package in.co.praveenkumar.mdroid.task;

import in.co.praveenkumar.mdroid.model.MDroidNotification;
import in.co.praveenkumar.mdroid.model.MoodleCourse;
import in.co.praveenkumar.mdroid.model.MoodleForum;
import in.co.praveenkumar.mdroid.moodlerest.MoodleRestForum;

import java.util.ArrayList;
import java.util.List;

public class ForumSyncTask {
	String mUrl;
	String token;
	long siteid;

	String error;
	Boolean notification;
	int notificationcount;

	/**
	 * 
	 * @param mUrl
	 * @param token
	 * @param siteid
	 * 
	 * @author Praveen Kumar Pendyala (praveen@praveenkumar.co.in)
	 */
	public ForumSyncTask(String mUrl, String token, long siteid) {
		this.mUrl = mUrl;
		this.token = token;
		this.siteid = siteid;
		this.notification = false;
		this.notificationcount = 0;
	}

	/**
	 * 
	 * @param mUrl
	 * @param token
	 * @param siteid
	 * @param notification
	 *            If true, sets notifications for new contents
	 * 
	 * @author Praveen Kumar Pendyala (praveen@praveenkumar.co.in)
	 */
	public ForumSyncTask(String mUrl, String token, long siteid,
			Boolean notification) {
		this.mUrl = mUrl;
		this.token = token;
		this.siteid = siteid;
		this.notification = notification;
		this.notificationcount = 0;
	}

	/**
	 * Get the notifications count. Notifications should be enabled during
	 * Object instantiation.
	 * 
	 * @return notificationcount
	 */
	public int getNotificationcount() {
		return notificationcount;
	}

	/**
	 * Sync all the events of a course. This will also sync user and site events
	 * whose scope is outside course.
	 * 
	 * @return syncStatus
	 * 
	 * @author Praveen Kumar Pendyala (praveen@praveenkumar.co.in)
	 */
	public Boolean syncForums(int courseid) {
		ArrayList<String> courseids = new ArrayList<>();
		courseids.add(courseid + "");
		return syncForums(courseids);
	}

	/**
	 * Sync all the forums in the list of courses.
	 * 
	 * @return syncStatus
	 * 
	 * @author Praveen Kumar Pendyala (praveen@praveenkumar.co.in)
	 */
	public Boolean syncForums(ArrayList<String> courseids) {
		MoodleRestForum mrf = new MoodleRestForum(mUrl, token);
		ArrayList<MoodleForum> mForums = mrf.getForums(courseids);

		/** Error checking **/
		// Some network or encoding issue.
		if (mForums == null) {
			error = "Network issue!";
			return false;
		}

		// Moodle exception
		if (mForums.isEmpty()) {
			error = "No data received";
			// No additional debug info as that needs context
			return false;
		}

		List<MoodleForum> dbForums;
		List<MoodleCourse> dbCourses;
		MoodleForum forum = new MoodleForum();
		for (int i = 0; i < mForums.size(); i++) {
			forum = mForums.get(i);
			forum.setSiteid(siteid);
			/*
			 * -TODO- Improve this search with only Sql operation
			 */
			dbForums = MoodleForum.find(MoodleForum.class,
					"forumid = ? and siteid = ?", String.valueOf(forum.getForumid()),
					String.valueOf(siteid));
			dbCourses = MoodleCourse.find(MoodleCourse.class,
					"courseid = ? and siteid = ?", String.valueOf(forum.getCourseid()),
					String.valueOf(siteid));
			if (!dbCourses.isEmpty())
				forum.setCoursename(dbCourses.get(0).getShortname());
			if (!dbForums.isEmpty())
				forum.setId(dbForums.get(0).getId());
			// set notifications if enabled
			else if (notification) {
				new MDroidNotification(siteid, MDroidNotification.TYPE_FORUM,
						"New forum in " + forum.getCoursename(),
						forum.getName(), 1,
						Integer.valueOf(forum.getCourseid())).save();
				notificationcount++;
			}
			forum.save();
		}

		return true;
	}

}