ReferenceStatusWrapper.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2012 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.erp.workorder;
 
import java.util.Date;
import java.util.EnumSet;
import org.turro.erp.entity.OrderReference;
import org.turro.erp.entity.ReferenceStatus;
import org.turro.erp.entity.Task;
import org.turro.erp.entity.TaskStatus;
import org.turro.status.Status;
 
public class ReferenceStatusWrapper extends Status<ReferenceStatus> {
 
  private OrderReference orderReference;
  private Date now;
 
  public ReferenceStatusWrapper(OrderReference orderReference, Date now) {
    super(null);
    this.orderReference = orderReference;
    this.now = now;
    checkStatus(now);
  }
  
  @Override
  protected ReferenceStatus doCheckStatus(Date now) {
    ReferenceStatus rs = ReferenceStatus.REFERENCE_FINISHED;
    if(orderReference.isDelivered()) {
      rs = ReferenceStatus.REFERENCE_DELIVERED;
    } if(orderReference.hasPendingBudget()) {
      rs = ReferenceStatus.REFERENCE_PENDING;
    } else {
      for(Task task : orderReference.getTasks()) {
        TaskStatus ts = task.getStatus();
        if(rs.getStatusOrder() > ts.getStatusOrder()) {
          rs = ReferenceStatus.values()[ts.getStatusOrder()];
        }
      }
    }
    return rs;
  }
 
  @Override
  protected ReferenceStatus doChangeTo(ReferenceStatus newStatus) {
    return newStatus;
  }
 
  @Override
  public boolean canChangeTo(ReferenceStatus newStatus) {
    if(current.equals(ReferenceStatus.REFERENCE_PLANNING)) {
      return EnumSet.of(
              ReferenceStatus.REFERENCE_READY, 
              ReferenceStatus.REFERENCE_ONWORK, 
              ReferenceStatus.REFERENCE_FINISHED).contains(newStatus) &&
             taskCouldChange(newStatus);
    } else if(current.equals(ReferenceStatus.REFERENCE_READY)) {
      return EnumSet.of(
              ReferenceStatus.REFERENCE_ONWORK, 
              ReferenceStatus.REFERENCE_FINISHED).contains(newStatus) &&
             taskCouldChange(newStatus);
    } else if(current.equals(ReferenceStatus.REFERENCE_ONWORK)) {
      return EnumSet.of(
              ReferenceStatus.REFERENCE_FINISHED).contains(newStatus) &&
             taskCouldChange(newStatus);
    }
    return false;
  }
 
  private boolean taskCouldChange(ReferenceStatus newStatus) {
    boolean delivering = false;
    if(newStatus.equals(ReferenceStatus.REFERENCE_DELIVERED)) {
      // Delivered would mean finishing tasks
      newStatus = ReferenceStatus.REFERENCE_FINISHED;
      delivering = true;
    }
    for(Task task : orderReference.getTasks()) {
      if(!task.getStatusWrapper(now).canChangeTo(TaskStatus.values()[newStatus.getStatusOrder()])) {
        return false;
      }
      if(delivering && task.isValidationPending()) {
        return false;
      }
    }
    return true;
  }
 
}