/**
 * 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.dao.service.validator;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
import org.thingsboard.server.common.data.EntityType;
import org.thingsboard.server.common.data.Tenant;
import org.thingsboard.server.common.data.id.TenantId;
import org.thingsboard.server.common.data.rule.RuleChain;
import org.thingsboard.server.common.data.rule.RuleChainType;
import org.thingsboard.server.common.data.tenant.profile.DefaultTenantProfileConfiguration;
import org.thingsboard.server.dao.exception.DataValidationException;
import org.thingsboard.server.dao.rule.RuleChainDao;
import org.thingsboard.server.dao.rule.RuleChainService;
import org.thingsboard.server.dao.service.DataValidator;
import org.thingsboard.server.dao.tenant.TbTenantProfileCache;
import org.thingsboard.server.dao.tenant.TenantDao;

@Component
public class RuleChainDataValidator extends DataValidator<RuleChain> {

    @Autowired
    private RuleChainDao ruleChainDao;

    @Autowired
    @Lazy
    private RuleChainService ruleChainService;

    @Autowired
    private TenantDao tenantDao;

    @Autowired
    @Lazy
    private TbTenantProfileCache tenantProfileCache;

    @Override
    protected void validateCreate(TenantId tenantId, RuleChain data) {
        DefaultTenantProfileConfiguration profileConfiguration =
                (DefaultTenantProfileConfiguration) tenantProfileCache.get(tenantId).getProfileData().getConfiguration();
        long maxRuleChains = profileConfiguration.getMaxRuleChains();
        validateNumberOfEntitiesPerTenant(tenantId, ruleChainDao, maxRuleChains, EntityType.RULE_CHAIN);
    }

    @Override
    protected void validateDataImpl(TenantId tenantId, RuleChain ruleChain) {
        if (StringUtils.isEmpty(ruleChain.getName())) {
            throw new DataValidationException("Rule chain name should be specified!");
        }
        if (ruleChain.getType() == null) {
            ruleChain.setType(RuleChainType.CORE);
        }
        if (ruleChain.getTenantId() == null || ruleChain.getTenantId().isNullUid()) {
            throw new DataValidationException("Rule chain should be assigned to tenant!");
        }
        Tenant tenant = tenantDao.findById(tenantId, ruleChain.getTenantId().getId());
        if (tenant == null) {
            throw new DataValidationException("Rule chain is referencing to non-existent tenant!");
        }
        if (ruleChain.isRoot() && RuleChainType.CORE.equals(ruleChain.getType())) {
            RuleChain rootRuleChain = ruleChainService.getRootTenantRuleChain(ruleChain.getTenantId());
            if (rootRuleChain != null && !rootRuleChain.getId().equals(ruleChain.getId())) {
                throw new DataValidationException("Another root rule chain is present in scope of current tenant!");
            }
        }
        if (ruleChain.isRoot() && RuleChainType.EDGE.equals(ruleChain.getType())) {
            RuleChain edgeTemplateRootRuleChain = ruleChainService.getEdgeTemplateRootRuleChain(ruleChain.getTenantId());
            if (edgeTemplateRootRuleChain != null && !edgeTemplateRootRuleChain.getId().equals(ruleChain.getId())) {
                throw new DataValidationException("Another edge template root rule chain is present in scope of current tenant!");
            }
        }
    }
}
