/*
    * Copyright 2009 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.osedu.org/licenses/ECL-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 org.kuali.student.contract.writer.service;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.kuali.student.contract.model.Service;
  import org.kuali.student.contract.model.ServiceContractModel;
  import org.kuali.student.contract.model.ServiceMethod;
  import org.kuali.student.contract.model.ServiceMethodError;
  import org.kuali.student.contract.model.XmlType;
  import org.kuali.student.contract.model.impl.ServiceContractModelPescXsdLoader;
  import org.kuali.student.contract.model.util.ServicesFilter;
  import org.kuali.student.contract.model.validation.DictionaryValidationException;
  import org.kuali.student.contract.model.validation.ServiceContractModelValidator;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   *
   * @author nwright
   */
  public class PureJavaInfcWriter {
      
      private static Logger log = LoggerFactory.getLogger(PureJavaInfcWriter.class);
      
      private ServiceContractModel model;
      private String directory;
      private String rootPackage;
      public static final String DEFAULT_ROOT_PACKAGE = "org.kuali.student.service";
      private ServicesFilter filter;
  
      public PureJavaInfcWriter(ServiceContractModel model,
              String directory,
              String rootPackage,
              ServicesFilter filter) {
          this.model = model;
          this.directory = directory;
          this.rootPackage = rootPackage;
          this.filter = filter;
      }
  
      /**
       * Write out the entire file
       * @param out
       */
      public void write() {
          this.validate();
  
          for (Service service : filterServices()) {
              new PureJavaInfcWriterForOneService(model, directory, rootPackage, service.getKey()).write();
          }
  
          // the Info interfaces's
          log.info("Generating common Info interfaces");
          for (XmlType xmlType : getXmlTypesUsedByMoreThanOneByService()) {
              log.info("Generating info interface for " + xmlType.getName());
              new PureJavaInfcInfcWriter(model, directory, rootPackage, xmlType.getService(), xmlType).write();
              new PureJavaInfcBeanWriter(model, directory, rootPackage, xmlType.getService(), xmlType).write();
          }
  
  //  exceptions
          // Decided to just use the exisiting exceptions that are hand crafted
          // no need to generate
  //  for (ServiceMethodError error : getServiceMethodErrors ().values ())
  //  {
  //   log.info ("generating exception class: " + error.getType ());
  //   new ServiceExceptionWriter (model, directory, rootPackage, error).write ();
  //  }
  
      }
  
      private Set<XmlType> getXmlTypesUsedByMoreThanOneByService() {
          Set<XmlType> set = new HashSet();
          for (XmlType type : model.getXmlTypes()) {
              if (type.getService().contains(",")) {
                  if (type.getPrimitive().equalsIgnoreCase(XmlType.COMPLEX)) {
                      log.info(type.getName() + "==>" + type.getService());
                      set.add(type);
                  }
              }
         }
         return set;
     }
 
     private Map<String, ServiceMethodError> getServiceMethodErrors() {
         Map<String, ServiceMethodError> errors = new HashMap();
         for (ServiceMethod method : model.getServiceMethods()) {
             for (ServiceMethodError error : method.getErrors()) {
                 errors.put(error.getType(), error);
             }
         }
         return errors;
     }
 
     private List<Service> filterServices() {
         if (filter == null) {
             return model.getServices();
         }
         return filter.filter(model.getServices());
     }
 
     private void validate() {
         Collection<String> errors =
                 new ServiceContractModelValidator(model).validate();
         if (errors.size() > 0) {
             StringBuffer buf = new StringBuffer();
             buf.append(errors.size() + " errors found while validating the data.");
             int cnt = 0;
             for (String msg : errors) {
                 cnt++;
                 buf.append("\n");
                 buf.append("*error*" + cnt + ":" + msg);
             }
 
             throw new DictionaryValidationException(buf.toString());
         }
     }
 }