PlateAPI.java

package tw.plate;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;

import java.lang.reflect.Type;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;

import retrofit.Callback;
import retrofit.RestAdapter;
import retrofit.client.Response;
import retrofit.converter.GsonConverter;
import retrofit.http.Field;
import retrofit.http.FormUrlEncoded;
import retrofit.http.GET;
import retrofit.http.POST;
import retrofit.http.Query;

public class PlateAPI {
	public class Recommendation {
		public String name;
		public String pic_uri;
		public int price;
		public String restaurant_name;
	}
	public class RecommendationResponse {
		public int success;
		public List<Recommendation> list;
	}

	public class Restaurant {
		public int location;
		public String name;
		public int rest_id;
	}
	public class RestaurantResponse {
		public int success;
		public List<Restaurant> list;
	}

	public class Meal {
		public int meal_price;
		public String meal_name;
		public int meal_id;
	}
	public class MenuResponse {
		public int success;
		public List<Meal> meal_list;
	}

	public class Order {
		public int number_slip;
		public int number_slip_index;
		public int rest_id;
		public String rest_name;
		public int status;
		public Date time;
	}
	public class StatusResponse {
		public boolean success;
		public List<Order> list;
	}

	public class OrderItem {
		public int amount;
		public int meal_id;
		public String meal_name;
		public int meal_price;
	}
	public class StatusDetailResponse {
		public boolean success;
		public List<OrderItem> list;
	}

	public static class MealAmount {
		public int meal_id;
		public int amount;
		public MealAmount(int meal_id, int amount) {
			this.meal_id = meal_id;
			this.amount = amount;
		}
	}

	interface PlateTWOldAPI {
		@GET("/suggestions.php")
		void recommendations(Callback<RecommendationResponse> cb);

		@GET("/restaurants.php")
		void restaurants(@Query("location") int location, Callback<RestaurantResponse> cb);

		@GET("/menu.php")
		void menu(@Query("rest_id") int rest_id, Callback<MenuResponse> cb);

		@FormUrlEncoded
		@POST("/status.php")
		void status(@Field("username") String username, Callback<StatusResponse> cb);

		@FormUrlEncoded
		@POST("/status_detail.php")
		void status_detail(@Field("number_slip_index") int number_slip_index, Callback<StatusDetailResponse> cb);

		@FormUrlEncoded
		@POST("/order.php")
		void order(@Field("username") String username,
		           @Field("rest_id") int rest_id,
		           @Field("order") /* json: [ (meal_id, amount) ...] */ String orders,
		           Callback<Response> cb);

		@FormUrlEncoded
		@POST("/cancel.php")
		void cancel(@Field("number_slip_index") int number_slip_index,
		            Callback<Response> cb);
	}

	public static final String API_URI_PREFIX = "http://localhost:8000";
	public static final String TEST_USERNAME = "android@plate.tw";

	private static RestAdapter restAdapter;
	private static PlateTWOldAPI plateTW;

	private static class DateTimeDeserializer implements JsonDeserializer<Date> {
		private SimpleDateFormat sdf;

		public DateTimeDeserializer() {
			/* http://stackoverflow.com/questions/7910734/gsonbuilder-setdateformat-for-2011-10-26t202959-0700
			 * http://developer.android.com/reference/java/text/SimpleDateFormat.html
			 * http://docs.oracle.com/javase/7/docs/api/java/text/SimpleDateFormat.html
			 * */
			String fmt;
			if (System.getProperty("java.runtime.name").equals("Android Runtime")) {
				fmt = "yyyy-MM-dd'T'HH:mm:ssZZZZZ";
			} else {
				fmt = "yyyy-MM-dd'T'HH:mm:ssX";
			}
			sdf = new SimpleDateFormat(fmt, Locale.US);
		}

		public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext ctx)
				throws JsonParseException {
			try {
				return sdf.parse(json.getAsJsonPrimitive().getAsString());
			} catch (ParseException e) {
				throw new JsonParseException(e.getMessage());
			}
		}
	}

	public static PlateTWOldAPI get() {
		Gson gson = new GsonBuilder()
				.registerTypeAdapter(Date.class, new DateTimeDeserializer())
				.create();
		restAdapter = new RestAdapter.Builder()
				.setServer(API_URI_PREFIX)
				.setConverter(new GsonConverter(gson))
				.build();
		plateTW = restAdapter.create(PlateTWOldAPI.class);
		return plateTW;
	}
}

Test.java

package tw.plate;

import com.google.gson.Gson;

import java.util.ArrayList;
import java.util.logging.Logger;

import retrofit.Callback;
import retrofit.RetrofitError;
import retrofit.client.Response;

import tw.plate.PlateAPI.*;

class Test {
	private static final Logger logger = Logger.getLogger("test");

	private static PlateAPI.PlateTWOldAPI plateTW;

	public static void main(String args[]) {
		plateTW = PlateAPI.get();
		if (false) {
			testRecommendations();
			testRestaurants();
			testMenu();
			testStatus();
			testStatusDetail();
			testOrder();
			testCancel();
		} else {
		}
	}

	static void testRecommendations() {
		plateTW.recommendations(new Callback<PlateAPI.RecommendationResponse>() {
			@Override public void success(RecommendationResponse rs, Response response) {
				logger.info("recommendations: begin");
				for (Recommendation r: rs.list)
					logger.info(String.format("\t(%s, %s, %d, %s)", r.restaurant_name, r.name, r.price, r.pic_uri));
				logger.info("recommendations: end");
			}

			@Override public void failure(RetrofitError error) {
				logger.warning("recommendations: failure");
			}
		});
	}

	static void testRestaurants() {
		plateTW.restaurants(1, new Callback<RestaurantResponse> () {
			@Override public void success(RestaurantResponse rs, Response response) {
				logger.info("restaurants: begin");
				for (Restaurant r: rs.list)
					logger.info(String.format("\t(%d, %d, %s)", r.rest_id, r.location, r.name));
				logger.info("restaurants: end");
			}
			@Override public void failure(RetrofitError e) {
				logger.warning("restaurants: failure");
			}
		});
	}

	private static void testMenu() {
		plateTW.menu(1, new Callback<MenuResponse>() {
			@Override public void success(MenuResponse ms, Response response) {
				logger.info("menu: begin");
				for (Meal m: ms.meal_list)
					logger.info(String.format("\t(%d, %s, %d)", m.meal_id, m.meal_name, m.meal_price));
				logger.info("menu: end");
			}
			@Override public void failure(RetrofitError e) {
				logger.warning("menu: failure");
			}
		});
	}

	private static void testStatus() {
		plateTW.status(PlateAPI.TEST_USERNAME, new Callback<StatusResponse>() {
			@Override public void success(StatusResponse ss, Response r) {
				logger.info("status: begin");
				for (Order o: ss.list)
					logger.info(String.format("\t(%d, %d, %s, %s, %d, %s)",
							o.number_slip_index, o.status, o.time, o.number_slip, o.rest_id, o.rest_name));
				logger.info("status: end");
			}
			@Override public void failure(RetrofitError e) {
				logger.warning("status: failure");
			}
		});
	}

	private static void testStatusDetail() {
		plateTW.status_detail(4, new Callback<StatusDetailResponse>() {
			@Override public void success(StatusDetailResponse ss, Response r) {
				logger.info("status_detail: begin");
				for (OrderItem o: ss.list)
					logger.info(String.format("(%d, %s, %d, %d)", o.meal_id, o.meal_name, o.meal_price, o.amount));
				logger.info("status_detail: end");
			}

			@Override
			public void failure(RetrofitError error) {
				logger.warning("status_detail: failure");
			}
		});
	}

	private static void testOrder() {
		ArrayList<MealAmount> l = new ArrayList<MealAmount>();
		l.add(new MealAmount(1, 4));

		plateTW.order(PlateAPI.TEST_USERNAME, 1, new Gson().toJson(l), new Callback<Response> () {
			@Override public void success(Response t, Response r) {
				logger.info("order: success");
			}
			@Override public void failure(RetrofitError e) {
				logger.warning("order: failure");
			}
		});
	}

	private static void testCancel() {
		plateTW.cancel(67, new Callback<Response>() {
			@Override public void success(Response t, Response r) {
				logger.info("cancel: success");
			}
			@Override public void failure(RetrofitError e) {
				logger.warning("cancel: failure");
			}
		});
	}
}