/*
    * 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 org.apache.syncope.core.persistence.jpa.entity.task;
  
  import com.fasterxml.jackson.core.type.TypeReference;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Optional;
  import javax.persistence.CascadeType;
  import javax.persistence.Entity;
  import javax.persistence.FetchType;
  import javax.persistence.JoinColumn;
  import javax.persistence.JoinTable;
  import javax.persistence.Lob;
  import javax.persistence.ManyToMany;
  import javax.persistence.ManyToOne;
  import javax.persistence.OneToMany;
  import javax.persistence.PostLoad;
  import javax.persistence.PostPersist;
  import javax.persistence.PostUpdate;
  import javax.persistence.PrePersist;
  import javax.persistence.PreUpdate;
  import javax.persistence.Table;
  import javax.persistence.Transient;
  import javax.persistence.UniqueConstraint;
  import org.apache.syncope.common.lib.types.IdMImplementationType;
  import org.apache.syncope.core.persistence.api.entity.Implementation;
  import org.apache.syncope.core.persistence.api.entity.Realm;
  import org.apache.syncope.core.persistence.api.entity.task.PushTask;
  import org.apache.syncope.core.persistence.api.entity.task.SchedTask;
  import org.apache.syncope.core.persistence.api.entity.task.TaskExec;
  import org.apache.syncope.core.persistence.jpa.entity.JPAImplementation;
  import org.apache.syncope.core.persistence.jpa.entity.JPARealm;
  import org.apache.syncope.core.provisioning.api.serialization.POJOHelper;
  
  @Entity
  @Table(name = JPAPushTask.TABLE)
  public class JPAPushTask extends AbstractProvisioningTask<PushTask> implements PushTask {
  
      private static final long serialVersionUID = -4141057723006682564L;
  
      public static final String TABLE = "PushTask";
  
      protected static final TypeReference<HashMap<String, String>> FILTER_TYPEREF =
              new TypeReference<HashMap<String, String>>() {
      };
  
      @ManyToOne(fetch = FetchType.EAGER, optional = false)
      private JPARealm sourceRealm;
  
      @Lob
      private String filters;
  
      @Transient
      private Map<String, String> filterMap = new HashMap<>();
  
      @ManyToMany(fetch = FetchType.EAGER)
      @JoinTable(name = "PushTaskAction",
              joinColumns =
              @JoinColumn(name = "task_id"),
              inverseJoinColumns =
              @JoinColumn(name = "implementation_id"),
              uniqueConstraints =
              @UniqueConstraint(columnNames = { "task_id", "implementation_id" }))
      private List<JPAImplementation> actions = new ArrayList<>();
  
      @OneToMany(targetEntity = JPAPushTaskExec.class,
              cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "task")
      private List<TaskExec<SchedTask>> executions = new ArrayList<>();
  
      @Override
      public JPARealm getSourceRealm() {
          return sourceRealm;
      }
  
      @Override
      public void setSourceRealm(final Realm sourceRealm) {
          checkType(sourceRealm, JPARealm.class);
          this.sourceRealm = (JPARealm) sourceRealm;
      }
  
     @Override
     public boolean add(final Implementation action) {
         checkType(action, JPAImplementation.class);
         checkImplementationType(action, IdMImplementationType.PUSH_ACTIONS);
         return actions.contains((JPAImplementation) action) || actions.add((JPAImplementation) action);
     }
 
     @Override
     public List<? extends Implementation> getActions() {
         return actions;
     }
 
     @Override
     public Optional<String> getFilter(final String anyType) {
         return Optional.ofNullable(filterMap.get(anyType));
     }
 
     @Override
     public Map<String, String> getFilters() {
         return filterMap;
     }
 
     @Override
     protected Class<? extends TaskExec<SchedTask>> executionClass() {
         return JPAPushTaskExec.class;
     }
 
     @Override
     protected List<TaskExec<SchedTask>> executions() {
         return executions;
     }
 
     protected void json2map(final boolean clearFirst) {
         if (clearFirst) {
             getFilters().clear();
         }
         if (filters != null) {
             getFilters().putAll(POJOHelper.deserialize(filters, FILTER_TYPEREF));
         }
     }
 
     @PostLoad
     public void postLoad() {
         json2map(false);
     }
 
     @PostPersist
     @PostUpdate
     public void postSave() {
         json2map(true);
     }
 
     @PrePersist
     @PreUpdate
     public void map2json() {
         filters = POJOHelper.serialize(getFilters());
     }
 }