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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package hotel;

import client.HotelServiceCallback;
import common.Constants;
import common.CreditCard;
import common.InvalidCreditCardException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.osoa.sca.annotations.Callback;
import org.osoa.sca.annotations.Property;
import org.osoa.sca.annotations.Scope;
import org.osoa.sca.annotations.Service;

@Service(HotelService.class)
@Scope("COMPOSITE")
public class HotelServiceImpl implements HotelService {

    @Callback
    protected HotelServiceCallback callback;
    private HotelBD bd;
    private int sleepBookTime;
    private int sleepPaymentTime;
    private String behavior;

    public HotelServiceImpl() {
        bd = HotelBD.getInstance();
        sleepBookTime = 0;
        sleepPaymentTime = 0;
        behavior = Constants.NORMAL;
    }

    public void book(int roomID) {
        new Thread(new BookThread(roomID)).start();
    }

    public void pay(int roomID, int confirmationID, CreditCard creditCard) {
        new Thread(new PayThread(roomID, confirmationID, creditCard)).start();
    }

    public String getBehavior() {
        return behavior;
    }

    @Property(name = "behavior", required = false)
    public void setBehavior(String behavior) {
        this.behavior = behavior.toUpperCase();
    }

    public int getSleepBookTime() {
        return sleepBookTime;
    }

    @Property(name = "sleepBookTime", required = false)
    public void setSleepBookTime(int sleepBookTime) {
        this.sleepBookTime = sleepBookTime;
    }

    public int getSleepPaymentTime() {
        return sleepPaymentTime;
    }

    @Property(name = "sleepPaymentTime", required = false)
    public void setSleepPaymentTime(int sleepPaymentTime) {
        this.sleepPaymentTime = sleepPaymentTime;
    }

    private class BookThread implements Runnable {

        private int roomID;

        public BookThread(int roomID) {
            this.roomID = roomID;
        }

        public void run() {
            //Extra time to book
            try {
                Thread.sleep(sleepBookTime);
            } catch (InterruptedException ex) {
                Logger.getLogger(HotelServiceImpl.class.getName()).log(Level.SEVERE, null, ex);
            }

            //NORMAL behavior
            if (behavior.equals(Constants.NORMAL) || behavior.equals(Constants.EXCEPTIONAL_PAYMENT)) {

                HotelRoom room = bd.get(roomID);
                int confirmationID = room.book();

                if (confirmationID != -1) {
                    callback.confirmHotelBook(confirmationID);
                    return;
                }

                callback.throwsHotelException(new UnavailableHotelException(
                        "Room " + roomID + " is already booked!"));
            } //EXCEPTIONAL_BOOK behavior
            else if (behavior.equals(Constants.EXCEPTIONAL_BOOK)) {
                callback.throwsHotelException(new UnavailableHotelException(
                        "Room " + roomID + " is already booked!"));
            }
        }
    }

    private class PayThread implements Runnable {

        private int roomID;
        private int confirmationID;
        private CreditCard creditCard;

        public PayThread(int roomID, int confirmationID, CreditCard creditCard) {
            this.roomID = roomID;
            this.confirmationID = confirmationID;
            this.creditCard = creditCard;
        }

        public void run() {
            //Extra time to pay
            try {
                Thread.sleep(sleepPaymentTime);
            } catch (InterruptedException ex) {
                Logger.getLogger(HotelServiceImpl.class.getName()).log(Level.SEVERE, null, ex);
            }

            //NORMAL behavior
            if (behavior.equals(Constants.NORMAL)) {

                HotelRoom room = bd.get(roomID);

                //Testing the confirmation ID
                if (room.getAlreadyBookedNumber() != confirmationID) {
                    room.unbook();

                    callback.throwsHotelException(new InvalidConfirmationIDException());
                    return;
                }
                //Testing the credit card
                if (!verifyCreditCard(creditCard)) {
                    room.unbook();

                    callback.throwsHotelException(new InvalidCreditCardException());
                    return;
                }

                callback.confirmHotelPayment(confirmationID);
            } //EXCEPTIONAL_PAYMENT behavior
            else if (behavior.equals(Constants.EXCEPTIONAL_PAYMENT)) {
                callback.throwsHotelException(new InvalidCreditCardException());
            }
        }

        private boolean verifyCreditCard(CreditCard creditCard) {
//            Random r = new Random(creditCard.getVerificationNumber());
//            return r.nextBoolean();
            return true;
        }
    }
}