/*
 * The MIT License
 * Copyright © 2014-2019 Ilkka Seppälä
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.iluwatar.commander.shippingservice;

import com.iluwatar.commander.Service;
import com.iluwatar.commander.exceptions.DatabaseUnavailableException;

/**
 * ShippingService class receives request from {@link com.iluwatar.commander.Commander} class and
 * adds it to the {@link ShippingDatabase}.
 */

public class ShippingService extends Service {

  static class ShippingRequest {
    String transactionId;
    String item;
    String address;

    ShippingRequest(String transactionId, String item, String address) {
      this.transactionId = transactionId;
      this.item = item;
      this.address = address;
    }
  }

  public ShippingService(ShippingDatabase db, Exception... exc) {
    super(db, exc);
  }

  /**
   * Public method which will receive request from {@link com.iluwatar.commander.Commander}.
   */

  public String receiveRequest(Object... parameters) throws DatabaseUnavailableException {
    var id = generateId();
    var item = (String) parameters[0];
    var address = (String) parameters[1];
    var req = new ShippingRequest(id, item, address);
    return updateDb(req);
  }

  protected String updateDb(Object... parameters) throws DatabaseUnavailableException {
    var req = (ShippingRequest) parameters[0];
    if (this.database.get(req.transactionId) == null) {
      database.add(req);
      return req.transactionId;
    }
    return null;
  }
}
