/*
 *    Copyright (c) 2018-2025, hnqz All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * Neither the name of the pig4cloud.com developer nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * Author: hnqz
 */

package com.qunzhixinxi.hnqz.gateway.handler;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.web.reactive.function.BodyInserters;
import org.springframework.web.reactive.function.server.HandlerFunction;
import org.springframework.web.reactive.function.server.ServerRequest;
import org.springframework.web.reactive.function.server.ServerResponse;
import reactor.core.publisher.Mono;
import springfox.documentation.swagger.web.UiConfiguration;
import springfox.documentation.swagger.web.UiConfigurationBuilder;

import java.util.Optional;

/**
 * @author hnqz
 * @date 2018-07-19 SwaggerUiHandler
 */
@Slf4j
@Component
public class SwaggerUiHandler implements HandlerFunction<ServerResponse> {

	@Autowired(required = false)
	private UiConfiguration uiConfiguration;

	/**
	 * Handle the given request.
	 * @param request the request to handler
	 * @return the response
	 */
	@Override
	public Mono<ServerResponse> handle(ServerRequest request) {
		return ServerResponse.status(HttpStatus.OK).contentType(MediaType.APPLICATION_JSON).body(BodyInserters
				.fromValue(Optional.ofNullable(uiConfiguration).orElse(UiConfigurationBuilder.builder().build())));
	}

}
