/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.juneau.rest.annotation;

import static org.apache.juneau.commons.utils.CollectionUtils.*;

import java.lang.annotation.*;

import org.apache.juneau.annotation.*;
import org.apache.juneau.commons.annotation.*;

/**
 * Utility classes and methods for the {@link OpSwagger @OpSwagger} annotation.
 *
 * <h5 class='section'>See Also:</h5><ul>
 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/JuneauBeanSwagger2">juneau-bean-swagger-v2</a>
 * </ul>
 */
public class OpSwaggerAnnotation {
   /**
    * Builder class.
    *
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link org.apache.juneau.BeanContext.Builder#annotations(Annotation...)}
    * </ul>
    */
   public static class Builder extends AnnotationObject.Builder {

      private String[] description = {};
      private ExternalDocs externalDocs = ExternalDocsAnnotation.DEFAULT;
      private String deprecated = "", operationId = "";
      private String[] consumes = {}, parameters = {}, produces = {}, responses = {}, schemes = {}, summary = {}, tags = {}, value = {};

      /**
       * Constructor.
       */
      protected Builder() {
         super(OpSwagger.class);
      }

      /**
       * Instantiates a new {@link OpSwagger @OpSwagger} object initialized with this builder.
       *
       * @return A new {@link OpSwagger @OpSwagger} object.
       */
      public OpSwagger build() {
         return new Object(this);
      }

      /**
       * Sets the description property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder description(String...value) {
         description = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#consumes()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder consumes(String...value) {
         consumes = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#deprecated()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder deprecated(String value) {
         deprecated = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#externalDocs()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder externalDocs(ExternalDocs value) {
         externalDocs = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#operationId()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder operationId(String value) {
         operationId = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#parameters()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder parameters(String...value) {
         parameters = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#produces()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder produces(String...value) {
         produces = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#responses()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder responses(String...value) {
         responses = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#schemes()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder schemes(String...value) {
         schemes = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#summary()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder summary(String...value) {
         summary = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#tags()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder tags(String...value) {
         tags = value;
         return this;
      }

      /**
       * Sets the {@link OpSwagger#value()} property on this annotation.
       *
       * @param value The new value for this property.
       * @return This object.
       */
      public Builder value(String...value) {
         this.value = value;
         return this;
      }

   }

   private static class Object extends AnnotationObject implements OpSwagger {

      private final String[] description;
      private final ExternalDocs externalDocs;
      private final String deprecated, operationId;
      private final String[] consumes, parameters, produces, responses, schemes, summary, tags, value;

      Object(OpSwaggerAnnotation.Builder b) {
         super(b);
         description = copyOf(b.description);
         consumes = copyOf(b.consumes);
         deprecated = b.deprecated;
         externalDocs = b.externalDocs;
         operationId = b.operationId;
         parameters = copyOf(b.parameters);
         produces = copyOf(b.produces);
         responses = copyOf(b.responses);
         schemes = copyOf(b.schemes);
         summary = copyOf(b.summary);
         tags = copyOf(b.tags);
         value = copyOf(b.value);
      }

      @Override /* Overridden from OpSwagger */
      public String[] consumes() {
         return consumes;
      }

      @Override /* Overridden from OpSwagger */
      public String deprecated() {
         return deprecated;
      }

      @Override /* Overridden from OpSwagger */
      public ExternalDocs externalDocs() {
         return externalDocs;
      }

      @Override /* Overridden from OpSwagger */
      public String operationId() {
         return operationId;
      }

      @Override /* Overridden from OpSwagger */
      public String[] parameters() {
         return parameters;
      }

      @Override /* Overridden from OpSwagger */
      public String[] produces() {
         return produces;
      }

      @Override /* Overridden from OpSwagger */
      public String[] responses() {
         return responses;
      }

      @Override /* Overridden from OpSwagger */
      public String[] schemes() {
         return schemes;
      }

      @Override /* Overridden from OpSwagger */
      public String[] summary() {
         return summary;
      }

      @Override /* Overridden from OpSwagger */
      public String[] tags() {
         return tags;
      }

      @Override /* Overridden from OpSwagger */
      public String[] value() {
         return value;
      }

      @Override /* Overridden from annotation */
      public String[] description() {
         return description;
      }
   }

   /** Default value */
   public static final OpSwagger DEFAULT = create().build();

   /**
    * Instantiates a new builder for this class.
    *
    * @return A new builder object.
    */
   public static Builder create() {
      return new Builder();
   }

   /**
    * Returns <jk>true</jk> if the specified annotation contains all default values.
    *
    * @param a The annotation to check.
    * @return <jk>true</jk> if the specified annotation contains all default values.
    */
   public static boolean empty(OpSwagger a) {
      return a == null || DEFAULT.equals(a);
   }

   /**
    * Returns <jk>false</jk> if the specified annotation contains all default values.
    *
    * @param a The annotation to check.
    * @return <jk>false</jk> if the specified annotation contains all default values.
    */
   public static boolean notEmpty(OpSwagger a) {
      return ! empty(a);
   }
}