Server.java

package se.chalmers.dat255.grupp12;

import static spark.Spark.*;

import com.google.gson.*;
import spark.*;

import java.io.IOException;
import java.sql.SQLException;

/**
 * Created with IntelliJ IDEA.
 * se.chalmers.dat255.grupp12.User: Hagej
 * Date: 2013-09-12
 * Time: 14:28
 * To change this template use File | Settings | File Templates.
 */

public class Server {

	private User user;

	public static String lastResponse = "{}";
	public static String lastRequest = "{}";


	public Server() {

		/**
		 * Authenticate user
		 * @param mail - e-mail address to verify
		 * @param token - oauth token from Google
		 *
		 * @return "Success" if authorization successful, "Fail" otherwise
		 */
		post(new Route("/auth") {
			@Override
			public Object handle(Request request, Response response) {
				String mail = request.queryParams("mail");
				String token = request.queryParams("token");

				// Create a session unless one exists
				Session login = request.session();

				if (!login.isNew()) {
					login.removeAttribute("user_id");
				}

				try {
					if ((user = Authorization.authorize(mail, token)) != null) {
						login = request.session();
						login.attribute("user_id", user.getId());
						System.out.println("Success! " + user.getMail());
						return "Success";// + user.getMail();
					} else {
						System.out.println("Authorization failed: " + user.getMail());
						return "Fail";//"Authorization failed, " + mail + " does not match token!";
					}
				} catch (IOException | SQLException e) {
					System.err.println(e.getMessage());
					e.printStackTrace();
					return e.getMessage();
				}
			}
		});

		before(new Filter() {
			@Override
			public void handle(Request request, Response response) {
				Session session = request.session(false);
				if (session != null && session.attribute("user_id") != null) {
					try {
						user = Database.getInstance().getUser((Integer) session.attribute("user_id"));
					} catch (SQLException e) {
						e.printStackTrace();
					} catch (DataNotFoundException e) {
						throw new IllegalStateException("User valid but not in db");
					}
				} else if (request.pathInfo().equals("/commit")) {
					// If user is not trying to authenticate => stop!
					halt(403);
				}
			}
		});

		get(new Route("/debug") {
			@Override
			public Object handle(Request request, Response response) {
				return "{\"request\":" + lastRequest + ",\"response\":" + lastResponse + "}";
			}
		});


		/**
		 * The commit route
		 * Everytime the client syncs with the server this route is used to
		 * modify the database by adding, removing and updating data on the database
		 * This is done through a commit controller that handles the incoming data
		 *
		 * @param modify - A String containing all the modifications done on the client
		 * @return - All the changes
		 */
		put(new JSONTransformer("/commit") {
			@Override
			public Object handle(Request request, Response response) {
				String modification = request.queryParams("modify");
				lastRequest = modification;

				System.out.println("FROM " + user.getName().split(" ")[0] + ": "  + modification);
				CommitController commitController = new CommitController(user);

				JsonArray element = new JsonParser().parse(modification).getAsJsonArray();
				return commitController.getChanges(element);
			}
		});

		// Filter to make sure that all response data is being sent with correct Content-Type and encoding.
		after(new Filter() {
			@Override
			public void handle(Request request, Response response) {
				response.header("Content-Type", "application/json; charset=utf-8");
			}
		});
	}
}