/**
 * Copyright © 2016-2018 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.dao.sql.device;

import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.repository.CrudRepository;
import org.springframework.stereotype.Component;
import org.thingsboard.server.common.data.Device;
import org.thingsboard.server.common.data.EntitySubtype;
import org.thingsboard.server.common.data.EntityType;
import org.thingsboard.server.common.data.UUIDConverter;
import org.thingsboard.server.common.data.device.DeviceStatusQuery;
import org.thingsboard.server.common.data.id.TenantId;
import org.thingsboard.server.common.data.page.TextPageLink;
import org.thingsboard.server.dao.DaoUtil;
import org.thingsboard.server.dao.device.DeviceDao;
import org.thingsboard.server.dao.model.sql.DeviceEntity;
import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
import org.thingsboard.server.dao.util.SqlDao;

import java.util.*;

import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUID;
import static org.thingsboard.server.common.data.UUIDConverter.fromTimeUUIDs;
import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID_STR;

/**
 * Created by Valerii Sosliuk on 5/6/2017.
 */
@Component
@SqlDao
@Slf4j
public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device> implements DeviceDao {

    @Autowired
    private DeviceRepository deviceRepository;

    @Override
    protected Class<DeviceEntity> getEntityClass() {
        return DeviceEntity.class;
    }

    @Override
    protected CrudRepository<DeviceEntity, String> getCrudRepository() {
        return deviceRepository;
    }

    @Override
    public List<Device> findDevicesByTenantId(UUID tenantId, TextPageLink pageLink) {
        return DaoUtil.convertDataList(
                deviceRepository.findByTenantId(
                        fromTimeUUID(tenantId),
                        Objects.toString(pageLink.getTextSearch(), ""),
                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                        new PageRequest(0, pageLink.getLimit())));
    }

    @Override
    public ListenableFuture<List<Device>> findDevicesByTenantIdAndIdsAsync(UUID tenantId, List<UUID> deviceIds) {
        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findDevicesByTenantIdAndIdIn(UUIDConverter.fromTimeUUID(tenantId), fromTimeUUIDs(deviceIds))));
    }

    @Override
    public List<Device> findDevicesByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
        return DaoUtil.convertDataList(
                deviceRepository.findByTenantIdAndCustomerId(
                        fromTimeUUID(tenantId),
                        fromTimeUUID(customerId),
                        Objects.toString(pageLink.getTextSearch(), ""),
                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                        new PageRequest(0, pageLink.getLimit())));
    }

    @Override
    public ListenableFuture<List<Device>> findDevicesByTenantIdCustomerIdAndIdsAsync(UUID tenantId, UUID customerId, List<UUID> deviceIds) {
        return service.submit(() -> DaoUtil.convertDataList(
                deviceRepository.findDevicesByTenantIdAndCustomerIdAndIdIn(fromTimeUUID(tenantId), fromTimeUUID(customerId), fromTimeUUIDs(deviceIds))));
    }

    @Override
    public Optional<Device> findDeviceByTenantIdAndName(UUID tenantId, String name) {
        Device device = DaoUtil.getData(deviceRepository.findByTenantIdAndName(fromTimeUUID(tenantId), name));
        return Optional.ofNullable(device);
    }

    @Override
    public List<Device> findDevicesByTenantIdAndType(UUID tenantId, String type, TextPageLink pageLink) {
        return DaoUtil.convertDataList(
                deviceRepository.findByTenantIdAndType(
                        fromTimeUUID(tenantId),
                        type,
                        Objects.toString(pageLink.getTextSearch(), ""),
                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                        new PageRequest(0, pageLink.getLimit())));
    }

    @Override
    public List<Device> findDevicesByTenantIdAndCustomerIdAndType(UUID tenantId, UUID customerId, String type, TextPageLink pageLink) {
        return DaoUtil.convertDataList(
                deviceRepository.findByTenantIdAndCustomerIdAndType(
                        fromTimeUUID(tenantId),
                        fromTimeUUID(customerId),
                        type,
                        Objects.toString(pageLink.getTextSearch(), ""),
                        pageLink.getIdOffset() == null ? NULL_UUID_STR : fromTimeUUID(pageLink.getIdOffset()),
                        new PageRequest(0, pageLink.getLimit())));
    }

    @Override
    public ListenableFuture<List<EntitySubtype>> findTenantDeviceTypesAsync(UUID tenantId) {
        return service.submit(() -> convertTenantDeviceTypesToDto(tenantId, deviceRepository.findTenantDeviceTypes(fromTimeUUID(tenantId))));
    }

    @Override
    public ListenableFuture<List<Device>> findDevicesByTenantIdAndStatus(UUID tenantId, DeviceStatusQuery statusQuery) {
        String strTenantId = fromTimeUUID(tenantId);
        long minTime = System.currentTimeMillis() - statusQuery.getThreshold();
        switch (statusQuery.getStatus()) {
            case OFFLINE: {
                switch (statusQuery.getContactType()) {
                    case UPLOAD:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findUpdateOfflineByTenantId(strTenantId, minTime)));
                    case CONNECT:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findConnectOfflineByTenantId(strTenantId, minTime)));
                }
                break;
            }
            case ONLINE: {
                switch (statusQuery.getContactType()) {
                    case UPLOAD:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findUpdateOnlineByTenantId(strTenantId, minTime)));
                    case CONNECT:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findConnectOnlineByTenantId(strTenantId, minTime)));
                }
                break;
            }
        }

        log.error("Could not build status query from [{}]", statusQuery);
        throw new IllegalStateException("Could not build status query for device []");
    }

    @Override
    public ListenableFuture<List<Device>> findDevicesByTenantIdTypeAndStatus(UUID tenantId, String type, DeviceStatusQuery statusQuery) {
        String strTenantId = fromTimeUUID(tenantId);
        long minTime = System.currentTimeMillis() - statusQuery.getThreshold();
        switch (statusQuery.getStatus()) {
            case OFFLINE: {
                switch (statusQuery.getContactType()) {
                    case UPLOAD:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findUpdateOfflineByTenantIdAndType(strTenantId, minTime, type)));
                    case CONNECT:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findConnectOfflineByTenantIdAndType(strTenantId, minTime, type)));
                }
                break;
            }
            case ONLINE: {
                switch (statusQuery.getContactType()) {
                    case UPLOAD:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findUpdateOnlineByTenantIdAndType(strTenantId, minTime, type)));
                    case CONNECT:
                        return service.submit(() -> DaoUtil.convertDataList(deviceRepository.findConnectOnlineByTenantIdAndType(strTenantId, minTime, type)));
                }
                break;
            }
        }

        log.error("Could not build status query from [{}]", statusQuery);
        throw new IllegalStateException("Could not build status query for device []");
    }

    @Override
    public void saveDeviceStatus(Device device) {
        ListenableFuture<Device> future = service.submit(() -> save(device));
        Futures.withFallback(future, t -> {
            log.error("Can't update device status for [{}]", device, t);
            throw new IllegalArgumentException("Can't update device status for {" + device + "}", t);
        });
    }

    private List<EntitySubtype> convertTenantDeviceTypesToDto(UUID tenantId, List<String> types) {
        List<EntitySubtype> list = Collections.emptyList();
        if (types != null && !types.isEmpty()) {
            list = new ArrayList<>();
            for (String type : types) {
                list.add(new EntitySubtype(new TenantId(tenantId), EntityType.DEVICE, type));
            }
        }
        return list;
    }
}
