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// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
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// ***************************************************************************************************************************
package org.apache.juneau.dto.swagger;

import static org.apache.juneau.internal.StringUtils.*;
import static org.apache.juneau.internal.ConverterUtils.*;

import java.util.*;

import org.apache.juneau.annotation.*;
import org.apache.juneau.collections.*;
import org.apache.juneau.internal.*;

/**
 * Allows adding meta data to a single tag that is used by the {@doc ExtSwaggerOperationObject Operation Object}.
 *
 * <p>
 * It is not mandatory to have a Tag Object per tag used there.
 *
 * <h5 class='section'>Example:</h5>
 * <p class='bcode w800'>
 *    <jc>// Construct using SwaggerBuilder.</jc>
 *    Tag x = <jsm>tag</jsm>()
 *       .name(<js>"pet"</js>)
 *       .description(<js>"Pets operations"</js>)
 *
 *    <jc>// Serialize using JsonSerializer.</jc>
 *    String json = JsonSerializer.<jsf>DEFAULT</jsf>.toString(x);
 *
 *    <jc>// Or just use toString() which does the same as above.</jc>
 *    String json = x.toString();
 * </p>
 * <p class='bcode w800'>
 *    <jc>// Output</jc>
 *    {
 *       <js>"name"</js>: <js>"pet"</js>,
 *       <js>"description"</js>: <js>"Pets operations"</js>
 *    }
 * </p>
 *
 * <ul class='seealso'>
 *    <li class='link'>{@doc DtoSwagger}
 * </ul>
 */
@Bean(bpi="name,description,externalDocs,*")
public class Tag extends SwaggerElement {

   private String
      name,
      description;
   private ExternalDocumentation externalDocs;

   /**
    * Default constructor.
    */
   public Tag() {}

   /**
    * Copy constructor.
    *
    * @param copyFrom The object to copy.
    */
   public Tag(Tag copyFrom) {
      super(copyFrom);

      this.name = copyFrom.name;
      this.description = copyFrom.description;
      this.externalDocs = copyFrom.externalDocs == null ? null : copyFrom.externalDocs.copy();
   }

   /**
    * Make a deep copy of this object.
    *
    * @return A deep copy of this object.
    */
   public Tag copy() {
      return new Tag(this);
   }

   /**
    * Bean property getter:  <property>name</property>.
    *
    * <p>
    * The name of the tag.
    *
    * @return The property value, or <jk>null</jk> if it is not set.
    */
   public String getName() {
      return name;
   }

   /**
    * Bean property setter:  <property>name</property>.
    *
    * <p>
    * The name of the tag.
    *
    * @param value
    *    The new value for this property.
    *    <br>Property value is required.
    * @return This object (for method chaining).
    */
   public Tag setName(String value) {
      name = value;
      return this;
   }

   /**
    * Same as {@link #setName(String)}.
    *
    * @param value
    *    The new value for this property.
    *    <br>Non-String values will be converted to String using <c>toString()</c>.
    *    <br>Can be <jk>null</jk> to unset the property.
    * @return This object (for method chaining).
    */
   public Tag name(Object value) {
      return setName(stringify(value));
   }

   /**
    * Bean property getter:  <property>description</property>.
    *
    * <p>
    * A short description for the tag.
    *
    * @return The property value, or <jk>null</jk> if it is not set.
    */
   public String getDescription() {
      return description;
   }

   /**
    * Bean property setter:  <property>description</property>.
    *
    * <p>
    * A short description for the tag.
    *
    * @param value
    *    The new value for this property.
    *    <br>{@doc ExtGFM} can be used for rich text representation.
    *    <br>Can be <jk>null</jk> to unset the property.
    * @return This object (for method chaining).
    */
   public Tag setDescription(String value) {
      description = value;
      return this;
   }

   /**
    * Same as {@link #setDescription(String)}.
    *
    * @param value
    *    The new value for this property.
    *    <br>Non-String values will be converted to String using <c>toString()</c>.
    *    <br>Can be <jk>null</jk> to unset the property.
    * @return This object (for method chaining).
    */
   public Tag description(Object value) {
      return setDescription(stringify(value));
   }

   /**
    * Bean property getter:  <property>externalDocs</property>.
    *
    * <p>
    * Additional external documentation for this tag.
    *
    * @return The property value, or <jk>null</jk> if it is not set.
    */
   public ExternalDocumentation getExternalDocs() {
      return externalDocs;
   }

   /**
    * Bean property setter:  <property>externalDocs</property>.
    *
    * <p>
    * Additional external documentation for this tag.
    *
    * @param value
    *    The new value for this property.
    *    <br>Can be <jk>null</jk> to unset the property.
    * @return This object (for method chaining).
    */
   public Tag setExternalDocs(ExternalDocumentation value) {
      externalDocs = value;
      return this;
   }

   /**
    * Same as {@link #setExternalDocs(ExternalDocumentation)}.
    *
    * @param value
    *    The new value for this property.
    *    <br>Valid types:
    *    <ul>
    *       <li>{@link ExternalDocumentation}
    *       <li><c>String</c> - JSON object representation of {@link ExternalDocumentation}
    *          <p class='bcode w800'>
    *    <jc>// Example </jc>
    *    externalDocs(<js>"{description:'description',url:'url'}"</js>);
    *          </p>
    *    </ul>
    *    <br>Can be <jk>null</jk> to unset the property.
    * @return This object (for method chaining).
    */
   public Tag externalDocs(Object value) {
      return setExternalDocs(toType(value, ExternalDocumentation.class));
   }

   @Override /* SwaggerElement */
   public <T> T get(String property, Class<T> type) {
      if (property == null)
         return null;
      switch (property) {
         case "name": return toType(getName(), type);
         case "description": return toType(getDescription(), type);
         case "externalDocs": return toType(getExternalDocs(), type);
         default: return super.get(property, type);
      }
   }

   @Override /* SwaggerElement */
   public Tag set(String property, Object value) {
      if (property == null)
         return this;
      switch (property) {
         case "name": return name(value);
         case "description": return description(value);
         case "externalDocs": return externalDocs(value);
         default:
            super.set(property, value);
            return this;
      }
   }

   @Override /* SwaggerElement */
   public Set<String> keySet() {
      ASet<String> s = ASet.<String>of()
         .aif(name != null, "name")
         .aif(description != null, "description")
         .aif(externalDocs != null, "externalDocs");
      return new MultiSet<>(s, super.keySet());
   }
}