/**
 * BladeX Commercial License Agreement
 * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
 * <p>
 * Use of this software is governed by the Commercial License Agreement
 * obtained after purchasing a license from BladeX.
 * <p>
 * 1. This software is for development use only under a valid license
 * from BladeX.
 * <p>
 * 2. Redistribution of this software's source code to any third party
 * without a commercial license is strictly prohibited.
 * <p>
 * 3. Licensees may copyright their own code but cannot use segments
 * from this software for such purposes. Copyright of this software
 * remains with BladeX.
 * <p>
 * Using this software signifies agreement to this License, and the software
 * must not be used for illegal purposes.
 * <p>
 * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
 * not liable for any claims arising from secondary or illegal development.
 * <p>
 * Author: Chill Zhuang (bladejava@qq.com)
 */
package org.springblade.gateway.provider;

import org.springframework.cloud.gateway.support.ServerWebExchangeUtils;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.util.UriComponentsBuilder;

import java.net.URI;
import java.util.LinkedHashSet;

/**
 * RequestProvider
 *
 * @author Chill
 */
public class RequestProvider {

	/**
	 * 获取原始url
	 *
	 * @param exchange
	 * @return
	 */
	public static String getOriginalRequestUrl(ServerWebExchange exchange) {
		ServerHttpRequest request = exchange.getRequest();
		LinkedHashSet<URI> uris = exchange.getRequiredAttribute(ServerWebExchangeUtils.GATEWAY_ORIGINAL_REQUEST_URL_ATTR);
		URI requestUri = uris.stream().findFirst().orElse(request.getURI());
		MultiValueMap<String, String> queryParams = request.getQueryParams();
		return UriComponentsBuilder.fromPath(requestUri.getRawPath()).queryParams(queryParams).build().toUriString();
	}

}