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/*
 * Copyright The Microcks 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 io.github.microcks.operator.base.resources;

import io.github.microcks.operator.MicrocksOperatorConfig;
import io.github.microcks.operator.api.base.v1alpha1.Microcks;
import io.github.microcks.operator.model.NamedSecondaryResourceProvider;

import io.fabric8.kubernetes.api.model.ObjectMeta;
import io.fabric8.kubernetes.api.model.PersistentVolumeClaim;
import io.fabric8.kubernetes.api.model.PersistentVolumeClaimBuilder;
import io.fabric8.kubernetes.api.model.Quantity;
import io.javaoperatorsdk.operator.api.reconciler.Context;
import io.javaoperatorsdk.operator.processing.dependent.kubernetes.CRUDKubernetesDependentResource;
import io.javaoperatorsdk.operator.processing.dependent.kubernetes.KubernetesDependent;
import org.jboss.logging.Logger;

/**
 * A MongoDB Kubernetes Persistent Volume Claim dependent resource.
 * @author laurent
 */
@KubernetesDependent(labelSelector = MicrocksOperatorConfig.RESOURCE_LABEL_SELECTOR)
public class MongoDBPVCDependentResource extends CRUDKubernetesDependentResource
      implements NamedSecondaryResourceProvider {

   /** Get a JBoss logging logger. */
   private final Logger logger = Logger.getLogger(getClass());

   /** Default empty constructor. */
   public MongoDBPVCDependentResource() {
      super(PersistentVolumeClaim.class);
   }

   /**
    * Get the name of PVC given the primary Microcks resource.
    * @param microcks The primary resource
    * @return The name of PVC
    */
   public static final String getPVCName(Microcks microcks) {
      return MongoDBDeploymentDependentResource.getDeploymentName(microcks);
   }

   @Override
   public String getSecondaryResourceName(Microcks primary) {
      return getPVCName(primary);
   }

   @Override
   protected PersistentVolumeClaim desired(Microcks microcks, Context context) {
      logger.debugf("Building desired MongoDB PersistentVolumeClaim for '%s'", microcks.getMetadata().getName());

      final ObjectMeta microcksMetadata = microcks.getMetadata();
      final String microcksName = microcksMetadata.getName();

      PersistentVolumeClaimBuilder builder = new PersistentVolumeClaimBuilder().withNewMetadata()
               .withName(getPVCName(microcks))
               .withNamespace(microcksMetadata.getNamespace())
               .addToLabels("app", microcksName)
               .addToLabels("container", "mongodb")
               .addToLabels("group", "microcks")
               .addToLabels(microcks.getSpec().getCommonLabels())
               .addToAnnotations(microcks.getSpec().getCommonAnnotations())
               .addToAnnotations(microcks.getSpec().getMongoDB().getPvcAnnotations())
            .endMetadata().withNewSpec().withAccessModes("ReadWriteOnce").withNewResources()
            .addToRequests("storage", new Quantity(microcks.getSpec().getMongoDB().getVolumeSize())).endResources()
            .endSpec();

      // Add optional storage class name if any.
      if (microcks.getSpec().getMongoDB().getStorageClassName() != null) {
         builder.editSpec().withStorageClassName(microcks.getSpec().getMongoDB().getStorageClassName()).endSpec();
      }
      return builder.build();
   }
}