/*
    * 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.List;
  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 javax.validation.constraints.NotNull;
  import org.apache.syncope.common.lib.command.CommandArgs;
  import org.apache.syncope.common.lib.types.IdRepoImplementationType;
  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.MacroTask;
  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 = JPAMacroTask.TABLE)
  public class JPAMacroTask extends JPASchedTask implements MacroTask {
  
      private static final long serialVersionUID = 8261850094316787406L;
  
      public static final String TABLE = "MacroTask";
  
      protected static final TypeReference<List<CommandArgs>> TYPEREF = new TypeReference<List<CommandArgs>>() {
      };
  
      @ManyToOne(fetch = FetchType.EAGER, optional = false)
      private JPARealm realm;
  
      @NotNull
      private Boolean continueOnError = false;
  
      @NotNull
      private Boolean saveExecs = true;
  
      @ManyToMany(fetch = FetchType.EAGER)
      @JoinTable(name = TABLE + "Commands",
              joinColumns =
              @JoinColumn(name = "task_id"),
              inverseJoinColumns =
              @JoinColumn(name = "implementation_id"),
              uniqueConstraints =
              @UniqueConstraint(columnNames = { "task_id", "implementation_id" }))
      private List<JPAImplementation> commands = new ArrayList<>();
  
      @Lob
      private String commandArgs;
  
      @Transient
      private final List<CommandArgs> commandArgsList = new ArrayList<>();
  
      @OneToMany(targetEntity = JPAMacroTaskExec.class,
              cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "task")
      private List<TaskExec<SchedTask>> executions = new ArrayList<>();
  
      @Override
      public Realm getRealm() {
          return realm;
      }
  
      @Override
      public void setRealm(final Realm realm) {
         checkType(realm, JPARealm.class);
         this.realm = (JPARealm) realm;
     }
 
     @Override
     public void add(final Implementation command, final CommandArgs args) {
         checkType(command, JPAImplementation.class);
         checkImplementationType(command, IdRepoImplementationType.COMMAND);
         commands.add((JPAImplementation) command);
 
         getCommandArgs().add(args);
     }
 
     @Override
     public List<JPAImplementation> getCommands() {
         return commands;
     }
 
     @Override
     public List<CommandArgs> getCommandArgs() {
         return commandArgsList;
     }
 
     @Override
     public boolean isContinueOnError() {
         return continueOnError == null ? false : continueOnError;
     }
 
     @Override
     public void setContinueOnError(final boolean continueOnError) {
         this.continueOnError = continueOnError;
     }
 
     @Override
     public boolean isSaveExecs() {
         return saveExecs == null ? true : saveExecs;
     }
 
     @Override
     public void setSaveExecs(final boolean saveExecs) {
         this.saveExecs = saveExecs;
     }
 
     @Override
     protected Class<? extends TaskExec<SchedTask>> executionClass() {
         return JPAMacroTaskExec.class;
     }
 
     @Override
     protected List<TaskExec<SchedTask>> executions() {
         return executions;
     }
 
     protected void json2list(final boolean clearFirst) {
         if (clearFirst) {
             getCommandArgs().clear();
         }
         if (commandArgs != null) {
             getCommandArgs().addAll(POJOHelper.deserialize(commandArgs, TYPEREF));
         }
     }
 
     @PostLoad
     public void postLoad() {
         json2list(false);
     }
 
     @PostPersist
     @PostUpdate
     public void postSave() {
         json2list(true);
     }
 
     @PrePersist
     @PreUpdate
     public void list2json() {
         commandArgs = POJOHelper.serialize(getCommandArgs(), TYPEREF);
     }
 }