/*
 * 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.marshall.uon;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

import java.lang.annotation.*;

import org.apache.juneau.marshall.*;
import org.apache.juneau.marshall.serializer.*;
import org.apache.juneau.marshall.urlencoding.*;

/**
 * Annotation for specifying config properties defined in {@link UonSerializer} and {@link UonParser}.
 *
 * <p>
 * Used primarily for specifying bean configuration properties on REST classes and methods.
 *
 * <h5 class='section'>See Also:</h5><ul>
 *    <li class='link'><a class="doclink" href="https://juneau.apache.org/docs/topics/UonSupport">UON</a>
 * </ul>
 */
@Target({ TYPE, METHOD })
@Retention(RUNTIME)
@Inherited
@ContextApply({ UonConfigAnnotation.SerializerApply.class, UonConfigAnnotation.ParserApply.class })
public @interface UonConfig {

   /**
    * Add <js>"_type"</js> properties when needed.
    *
    * <p>
    * If <js>"true"</js>, then <js>"_type"</js> properties will be added to beans if their type cannot be inferred
    * through reflection.
    *
    * <p>
    * When present, this value overrides the {@link org.apache.juneau.marshall.serializer.Serializer.Builder#addBeanTypes() Serializer.Builder#addBeanTypes()} setting and is
    * provided to customize the behavior of specific serializers in a {@link SerializerSet}.
    *
    * <ul class='values'>
    *    <li><js>"true"</js>
    *    <li><js>"false"</js> (default)
    * </ul>
    *
    * <h5 class='section'>Notes:</h5><ul>
    *    <li class='note'>
    *       Supports <a class="doclink" href="https://juneau.apache.org/docs/topics/DefaultVarResolver">VarResolver.DEFAULT</a> (e.g. <js>"$C{myConfigVar}"</js>).
    * </ul>
    *
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link UonSerializer.Builder#addBeanTypesUon()}
    * </ul>
    *
    * @return The annotation value.
    */
   String addBeanTypes() default "";

   /**
    * Decode <js>"%xx"</js> sequences.
    *
    * <p>
    * Specify <js>"true"</js> if URI encoded characters should be decoded, <js>"false"</js> if they've already been decoded
    * before being passed to this parser.
    *
    * <ul class='values'>
    *    <li><js>"true"</js> (default for {@link UrlEncodingParser})
    *    <li><js>"false"</js> (default for {@link UonParser})
    * </ul>
    *
    * <h5 class='section'>Notes:</h5><ul>
    *    <li class='note'>
    *       Supports <a class="doclink" href="https://juneau.apache.org/docs/topics/DefaultVarResolver">VarResolver.DEFAULT</a> (e.g. <js>"$C{myConfigVar}"</js>).
    * </ul>
    *
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link UonParser.Builder#decoding()}
    * </ul>
    *
    * @return The annotation value.
    */
   String decoding() default "";

   /**
    * Encode non-valid URI characters.
    *
    * <p>
    * Encode non-valid URI characters with <js>"%xx"</js> constructs.
    *
    * <p>
    * If <js>"true"</js>, non-valid URI characters will be converted to <js>"%xx"</js> sequences.
    * <br>Set to <js>"false"</js> if parameter value is being passed to some other code that will already perform
    * URL-encoding of non-valid URI characters.
    *
    * <ul class='values'>
    *    <li><js>"true"</js> (default for {@link UrlEncodingSerializer})
    *    <li><js>"false"</js> (default for {@link UonSerializer})
    * </ul>
    *
    * <h5 class='section'>Notes:</h5><ul>
    *    <li class='note'>
    *       Supports <a class="doclink" href="https://juneau.apache.org/docs/topics/DefaultVarResolver">VarResolver.DEFAULT</a> (e.g. <js>"$C{myConfigVar}"</js>).
    * </ul>
    *
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link UonSerializer.Builder#encoding()}
    * </ul>
    *
    * @return The annotation value.
    */
   String encoding() default "";

   /**
    * Format to use for query/form-data/header values.
    *
    * <p>
    * Specifies the format to use for URL GET parameter keys and values.
    *
    * <ul class='values'>
    *    <li><js>"UON"</js> (default) - Use UON notation for parameters.
    *    <li><js>"PLAINTEXT"</js> - Use plain text for parameters.
    * </ul>
    *
    * <h5 class='section'>Notes:</h5><ul>
    *    <li class='note'>
    *       Supports <a class="doclink" href="https://juneau.apache.org/docs/topics/DefaultVarResolver">VarResolver.DEFAULT</a> (e.g. <js>"$C{myConfigVar}"</js>).
    * </ul>
    *
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link UonSerializer.Builder#paramFormat(ParamFormat)}
    * </ul>
    *
    * @return The annotation value.
    */
   String paramFormat() default "";

   /**
    * Optional rank for this config.
    *
    * <p>
    * Can be used to override default ordering and application of config annotations.
    *
    * @return The annotation value.
    */
   int rank() default 0;

   /**
    * Validate end.
    *
    * <p>
    * If <js>"true"</js>, after parsing a POJO from the input, verifies that the remaining input in
    * the stream consists of only comments or whitespace.
    *
    * <ul class='values'>
    *    <li><js>"true"</js>
    *    <li><js>"false"</js> (default)
    * </ul>
    *
    * <h5 class='section'>Notes:</h5><ul>
    *    <li class='note'>
    *       Supports <a class="doclink" href="https://juneau.apache.org/docs/topics/DefaultVarResolver">VarResolver.DEFAULT</a> (e.g. <js>"$C{myConfigVar}"</js>).
    * </ul>
    * 
    * <h5 class='section'>See Also:</h5><ul>
    *    <li class='jm'>{@link UonParser.Builder#validateEnd()}
    * </ul>
    *
    * @return The annotation value.
    */
   String validateEnd() default "";
}