package cn.sh.stc.sict.cloud.common.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;

/**
 * @Description
 * @Author
 * @Date
 */
@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_UTF8)
				.body(BodyInserters.fromObject(
						Optional.ofNullable(uiConfiguration)
								.orElse(UiConfigurationBuilder.builder().build())));
	}
}
