package com.google.sitebricks.example;



import com.google.inject.name.Named;

import com.google.sitebricks.At;

import com.google.sitebricks.client.transport.Json;

import com.google.sitebricks.headless.Reply;

import com.google.sitebricks.headless.Request;

import com.google.sitebricks.headless.Service;

import com.google.sitebricks.http.Delete;

import com.google.sitebricks.http.Get;

import com.google.sitebricks.http.Patch;

import com.google.sitebricks.http.Post;

import com.google.sitebricks.http.Put;



import java.io.Serializable;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

import java.util.List;



@At(RestfulWebServiceWithCRUDConversions.AT_ME)

@Service

public class RestfulWebServiceWithCRUDConversions {

	public static final String AT_ME = "/jsonConversion";

	public static List<Widget> widgets = new ArrayList<Widget>();



	static {

		populate();

	}



	private static void populate() {

		SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy HH:mm");

		try {

			addWidget(new Widget(1, "Widget 1", sdf.parse("01-JAN-1990 12:00"), 1.50));

			addWidget(new Widget(2, "Widget 2", sdf.parse("02-FEB-2000 18:00"), 21.75));

			addWidget(new Widget(3, "Widget 3", sdf.parse("03-MAR-2010 23:00"), 19.99));

		} catch (Exception e) {

		}

	}



	@Post

	public Reply<Widget> post(Request request) {

		Widget widget = request.read(Widget.class).as(Json.class);

		addWidget(widget);

		return Reply.with(widget).as(Json.class).type("application/json");

	}



	@Put

	public Reply<?> put(Request request) {

		Widget widget = request.read(Widget.class).as(Json.class);

		addWidget(widget);

		return Reply.with(widget).as(Json.class).type("application/json");

	}



  @Patch

  public Reply<?> patch(Request request) {

    Widget widget = request.read(Widget.class).as(Json.class);

    updateWidget(widget);

    return Reply.with(widget).as(Json.class).type("application/json");

  }



	@Get

	public Reply<List<Widget>> getAll() {

		return Reply.with(widgets).as(Json.class).type("application/json");

	}



	@At("/:id")

	@Get

	public Reply<?> get(@Named("id") int id) {

		Widget widget = findWidget(id);

		if (widget != null)

			return Reply.with(widget).as(Json.class).type("application/json");

		return Reply.saying().error();

	}



	@At("/:id")

	@Delete

	public Reply<?> delete(@Named("id") int id) {

		Widget widget = removeWidget(id);

		if (widget != null)

			return Reply.with(widget).as(Json.class).type("application/json");

		return Reply.saying().error();

	}



	public static Widget removeWidget(Widget widget) {

		return removeWidget(widget.getId());

	}



	public static Widget removeWidget(int id) {

		Widget oldWidget = findWidget(id);

		if (oldWidget != null)

			widgets.remove(oldWidget);

		return oldWidget;

	}



	public static void addWidget(Widget widget) {

		Widget oldWidget = findWidget(widget.getId());

		if (oldWidget != null)

			widgets.remove(oldWidget);

		widgets.add(widget);

	}



  public static void updateWidget(Widget widget) {

    Widget staleWidget = findWidget(widget.getId());

    if (staleWidget != null) {

      staleWidget.setName(widget.getName());

      staleWidget.setAvailable(widget.getAvailable());

      staleWidget.setPrice(widget.getPrice());

    }

  }



	public static Widget findWidget(int id) {

		for (Widget widget : widgets) {

			if (widget.getId() == id)

				return widget;

		}

		return null;

	}



	public static class Widget implements Serializable {

		int id;

		String name;

		Date available;

		double price;



		public Widget() {

		}



		public Widget(int id, String name, Date available, double price) {

			this.id = id;

			this.name = name;

			this.available = available;

			this.price = price;

		}



		public int getId() {

			return id;

		}



		public void setId(int id) {

			this.id = id;

		}



		public String getName() {

			return name;

		}



		public void setName(String name) {

			this.name = name;

		}



		public Date getAvailable() {

			return available;

		}



		public void setAvailable(Date available) {

			this.available = available;

		}



		public double getPrice() {

			return price;

		}



		public void setPrice(double price) {

			this.price = price;

		}



		public Widget clone()	{

			return new Widget (id, name, available, price);

		}

		

		@Override

		public int hashCode() {

			final int prime = 31;

			int result = 1;

			result = prime * result + ((available == null) ? 0 : available.hashCode());

			result = prime * result + id;

			result = prime * result + ((name == null) ? 0 : name.hashCode());

			long temp;

			temp = Double.doubleToLongBits(price);

			result = prime * result + (int) (temp ^ (temp >>> 32));

			return result;

		}



		@Override

		public boolean equals(Object obj) {

			if (this == obj)

				return true;

			if (obj == null)

				return false;

			if (getClass() != obj.getClass())

				return false;

			Widget other = (Widget) obj;

			if (available == null) {

				if (other.available != null)

					return false;

			} else if (!available.equals(other.available))

				return false;

			if (id != other.id)

				return false;

			if (name == null) {

				if (other.name != null)

					return false;

			} else if (!name.equals(other.name))

				return false;

			if (Double.doubleToLongBits(price) != Double.doubleToLongBits(other.price))

				return false;

			return true;

		}





	}

}