/*
 * Copyright 2013-2023 the original author or 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
 *
 *      https://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.springframework.data.web;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import org.springframework.core.annotation.AliasFor;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.web.SortDefault.SortDefaults;

/**
 * Annotation to set defaults when injecting a {@link org.springframework.data.domain.Pageable} into a controller
 * method. Instead of configuring {@link #sort()} and {@link #direction()} you can also use {@link SortDefault} or
 * {@link SortDefaults}.
 *
 * @since 1.6
 * @author Oliver Gierke
 * @author Mark Paluch
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.PARAMETER)
public @interface PageableDefault {

	/**
	 * Alias for {@link #size()}. Prefer to use the {@link #size()} method as it makes the annotation declaration more
	 * expressive and you'll probably want to configure the {@link #page()} anyway.
	 *
	 * @return
	 */
	@AliasFor("size")
	int value() default 10;

	/**
	 * The default-size the injected {@link org.springframework.data.domain.Pageable} should get if no corresponding
	 * parameter defined in request (default is {@code 10}).
	 */
	@AliasFor("value")
	int size() default 10;

	/**
	 * The default page number the injected {@link org.springframework.data.domain.Pageable} should use if no
	 * corresponding parameter defined in request (default is {@code 0}).
	 */
	int page() default 0;

	/**
	 * The properties to sort by default. If unset, no sorting will be applied at all.
	 *
	 * @return
	 */
	String[] sort() default {};

	/**
	 * The direction to sort by. Defaults to {@link Direction#ASC}.
	 *
	 * @return
	 */
	Direction direction() default Direction.ASC;
}
