/**
    * Copyright 2004-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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 org.kuali.student.contract.model.validation;
  
  import org.kuali.student.contract.model.ServiceContractModel;
  import org.kuali.student.contract.model.ServiceMethod;
  import org.kuali.student.contract.model.XmlType;
  
  import java.util.ArrayList;
  import java.util.Collection;
  
  /**
   * This validates a single serviceMethodinoary entry
   * @author nwright
   */
  public class ServiceContractModelValidator implements ModelValidator {
  
      private ServiceContractModel model;
  
      public ServiceContractModelValidator(ServiceContractModel model) {
          this.model = model;
      }
      private Collection<String> errors;
  
      @Override
      public Collection<String> validate() {
          errors = new ArrayList<String>();
          basicValidation();
          this.validateServiceMethods();
          validateXmlTypes();
          return errors;
      }
  
      private void validateServiceMethods() {
          for (ServiceMethod method : model.getServiceMethods()) {
              errors.addAll(new ServiceMethodValidator(method, model).validate());
          }
      }
  
      private void validateXmlTypes() {
          if (model.getXmlTypes().size() == 0) {
              addError("No xmlTypes found");
          }
          for (XmlType xmlType : model.getXmlTypes()) {
              XmlTypesValidator validator = new XmlTypesValidator(xmlType, model);
              errors.addAll(validator.validate());
          }
      }
  
      private void basicValidation() {
          if (model.getServiceMethods().size() == 0) {
              addError("no service methods have been defined");
          }
      }
  
      private void addError(String msg) {
          String error = "Error in service methods: " + msg;
          if (!errors.contains(error)) {
              errors.add(error);
          }
      }
  }