/*
 * HTTP.h
 *
 * This source file is part of the FoundationDB open source project
 *
 * Copyright 2013-2018 Apple Inc. and the FoundationDB project 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
 *
 *     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.
 */

#include "flow/flow.h"
#include "flow/Net2Packet.h"
#include "fdbrpc/IRateControl.h"
#include "fdbclient/Knobs.h"

namespace HTTP {
	struct is_iless {
		bool operator() (const std::string &a, const std::string &b) const {
			return strcasecmp(a.c_str(), b.c_str()) < 0;
		}
	};

	typedef std::map<std::string, std::string, is_iless> Headers;

	std::string urlEncode(const std::string &s);

	struct Response : ReferenceCounted<Response>{
		Response() {}
		Future<Void> read(Reference<IConnection> conn, bool header_only);
		std::string toString();
		float version;
		int code;
		Headers headers;
		std::string content;
		int64_t contentLen;

		bool verifyMD5(bool fail_if_header_missing, Optional<std::string> content_sum = Optional<std::string>());
	};

	// Prepend the HTTP request header to the given PacketBuffer, returning the new head of the buffer chain
	PacketBuffer * writeRequestHeader(std::string const &verb, std::string const &resource, HTTP::Headers const &headers, PacketBuffer *dest);

	// Do an HTTP request to the blob store, parse the response.
	Future<Reference<Response>> doRequest(Reference<IConnection> const &conn, std::string const &verb, std::string const &resource, HTTP::Headers const &headers, UnsentPacketQueue * const &pContent, int const &contentLen, Reference<IRateControl> const &sendRate, int64_t * const &pSent, Reference<IRateControl> const &recvRate, const std::string &requestHeader = std::string());
}