/* Licensed 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.activiti.engine.impl.persistence.entity;

import java.io. Serializable;
import java.util. HashMap;
import java.util. Map;

import org.activiti.engine. ActivitiException;
import org.activiti.engine.history. HistoricIdentityLink;
import org.activiti.engine.impl.db. BulkDeleteable;
import org.activiti.engine.impl.db. PersistentObject;

/**
 * @author Frederik Heremans
 */
public class HistoricIdentityLinkEntity implements Serializable, HistoricIdentityLink, BulkDeleteable, PersistentObject {

    private static final long serialVersionUID = 1L;

    protected String id;

    protected String type;

    protected String userId;

    protected String groupId;

    protected String taskId;

    protected String processInstanceId;

    public HistoricIdentityLinkEntity(IdentityLinkEntity identityLink) {
        this.id = identityLink.getId();
        this.groupId = identityLink.getGroupId();
        this.processInstanceId = identityLink.getProcessInstanceId();
        this.taskId = identityLink.getTaskId();
        this.type = identityLink.getType();
        this.userId = identityLink.getUserId();
    }

    public HistoricIdentityLinkEntity() {

    }

    @Override
    public Object getPersistentState() {
        Map<String, Object> persistentState = new HashMap<>();
        persistentState.put("id", this.id);
        persistentState.put("type", this.type);

        if (this.userId ! = null) {
            persistentState.put("userId", this.userId);
        }

        if (this.groupId ! = null) {
            persistentState.put("groupId", this.groupId);
        }

        if (this.taskId ! = null) {
            persistentState.put("taskId", this.taskId);
        }

        if (this.processInstanceId ! = null) {
            persistentState.put("processInstanceId", this.processInstanceId);
        }

        return persistentState;
    }

    public boolean isUser() {
        return userId ! = null;
    }

    public boolean isGroup() {
        return groupId ! = null;
    }

    @Override
    public String getId() {
        return id;
    }

    @Override
    public void setId(String id) {
        this.id = id;
    }

    @Override
    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    @Override
    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        if (this.groupId ! = null && userId ! = null) {
            throw new ActivitiException("Cannot assign a userId to a task assignment that already has a groupId");
        }
        this.userId = userId;
    }

    @Override
    public String getGroupId() {
        return groupId;
    }

    public void setGroupId(String groupId) {
        if (this.userId ! = null && groupId ! = null) {
            throw new ActivitiException("Cannot assign a groupId to a task assignment that already has a userId");
        }
        this.groupId = groupId;
    }

    @Override
    public String getTaskId() {
        return taskId;
    }

    public void setTaskId(String taskId) {
        this.taskId = taskId;
    }

    @Override
    public String getProcessInstanceId() {
        return processInstanceId;
    }

    public void setProcessInstanceId(String processInstanceId) {
        this.processInstanceId = processInstanceId;
    }
}
