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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.Secret;
import io.fabric8.kubernetes.api.model.SecretBuilder;
import io.javaoperatorsdk.operator.api.reconciler.Context;
import io.javaoperatorsdk.operator.api.reconciler.dependent.Deleter;
import io.javaoperatorsdk.operator.processing.dependent.Creator;
import io.javaoperatorsdk.operator.processing.dependent.kubernetes.KubernetesDependent;
import io.javaoperatorsdk.operator.processing.dependent.kubernetes.KubernetesDependentResource;
import org.apache.commons.lang3.RandomStringUtils;
import org.jboss.logging.Logger;

/**
 * A Keycloak Kubernetes Secret dependent resource.
 * @author laurent
 */
@KubernetesDependent(labelSelector = MicrocksOperatorConfig.RESOURCE_LABEL_SELECTOR)
public class KeycloakSecretDependentResource extends KubernetesDependentResource
      implements Creator, Deleter, NamedSecondaryResourceProvider {

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

   /** The secret key used to store username. */
   public static final String KEYCLOAK_ADMIN_KEY = "username";
   /** The secret key used to store password. */
   public static final String KEYCLOAK_ADMIN_PASSWORD_KEY = "password";

   /** The secret key used to store postgres username. */
   public static final String DATABASE_USER_KEY = "postgresUsername";
   /** The secret key used to store postgres password. */
   public static final String DATABASE_USER_PASSWORD_KEY = "postgresPassword";

   private static final String RESOURCE_SUFFIX = "-keycloak-admin";

   /** Default empty constructor. */
   public KeycloakSecretDependentResource() {
      super(Secret.class);
   }

   /**
    * Get the name of Secret given the primary Microcks resource.
    * @param microcks The primary resource
    * @return The name of Secret
    */
   public static final String getSecretName(Microcks microcks) {
      return microcks.getMetadata().getName() + RESOURCE_SUFFIX;
   }

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

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

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

      SecretBuilder builder = new SecretBuilder().withNewMetadata().withName(getSecondaryResourceName(microcks))
            .withNamespace(microcksMetadata.getNamespace())
               .addToLabels("app", microcksName)
               .addToLabels("container", "keycloak")
               .addToLabels("group", "microcks")
               .addToLabels(microcks.getSpec().getCommonLabels())
               .addToAnnotations(microcks.getSpec().getCommonAnnotations())
            .endMetadata()
            .withType("kubernetes.io/basic-auth")
            .addToStringData(KEYCLOAK_ADMIN_KEY, "admin" + RandomStringUtils.randomAlphanumeric(6))
            .addToStringData(KEYCLOAK_ADMIN_PASSWORD_KEY, RandomStringUtils.randomAlphanumeric(32))
            .addToStringData(DATABASE_USER_KEY, "user" + RandomStringUtils.randomAlphanumeric(6))
            .addToStringData(DATABASE_USER_PASSWORD_KEY, RandomStringUtils.randomAlphanumeric(32));

      return builder.build();
   }
}