/**
 * Copyright © 2016-2022 The Thingsboard Authors
 *
 * 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.thingsboard.server.service.edge.rpc.processor;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.thingsboard.server.common.data.EdgeUtils;
import org.thingsboard.server.common.data.EntityView;
import org.thingsboard.server.common.data.edge.Edge;
import org.thingsboard.server.common.data.edge.EdgeEvent;
import org.thingsboard.server.common.data.edge.EdgeEventActionType;
import org.thingsboard.server.common.data.id.CustomerId;
import org.thingsboard.server.common.data.id.EntityViewId;
import org.thingsboard.server.gen.edge.v1.DownlinkMsg;
import org.thingsboard.server.gen.edge.v1.EntityViewUpdateMsg;
import org.thingsboard.server.gen.edge.v1.UpdateMsgType;
import org.thingsboard.server.queue.util.TbCoreComponent;

@Component
@Slf4j
@TbCoreComponent
public class EntityViewEdgeProcessor extends BaseEdgeProcessor {

    public DownlinkMsg processEntityViewToEdge(Edge edge, EdgeEvent edgeEvent, UpdateMsgType msgType, EdgeEventActionType action) {
        EntityViewId entityViewId = new EntityViewId(edgeEvent.getEntityId());
        DownlinkMsg downlinkMsg = null;
        switch (action) {
            case ADDED:
            case UPDATED:
            case ASSIGNED_TO_EDGE:
            case ASSIGNED_TO_CUSTOMER:
            case UNASSIGNED_FROM_CUSTOMER:
                EntityView entityView = entityViewService.findEntityViewById(edgeEvent.getTenantId(), entityViewId);
                if (entityView != null) {
                    CustomerId customerId = getCustomerIdIfEdgeAssignedToCustomer(entityView, edge);
                    EntityViewUpdateMsg entityViewUpdateMsg =
                            entityViewMsgConstructor.constructEntityViewUpdatedMsg(msgType, entityView, customerId);
                    downlinkMsg = DownlinkMsg.newBuilder()
                            .setDownlinkMsgId(EdgeUtils.nextPositiveInt())
                            .addEntityViewUpdateMsg(entityViewUpdateMsg)
                            .build();
                }
                break;
            case DELETED:
            case UNASSIGNED_FROM_EDGE:
                EntityViewUpdateMsg entityViewUpdateMsg =
                        entityViewMsgConstructor.constructEntityViewDeleteMsg(entityViewId);
                downlinkMsg = DownlinkMsg.newBuilder()
                        .setDownlinkMsgId(EdgeUtils.nextPositiveInt())
                        .addEntityViewUpdateMsg(entityViewUpdateMsg)
                        .build();
                break;
        }
        return downlinkMsg;
    }
}
