#pragma once
#include "../acl_cpp_define.hpp"
#include "../stdlib/string.hpp"
#include "redis_command.hpp"

namespace acl
{

class redis_client;
class redis_client_cluster;

struct redis_stream_message
{
	string name;
	string value;
};

struct redis_stream_messages
{
	string key;
	std::map<string, std::vector<redis_stream_message> > messages;
};

class ACL_CPP_API redis_stream : virtual public redis_command
{
public:
	redis_stream(void);
	redis_stream(redis_client* conn);
	redis_stream(redis_client_cluster* cluster, size_t max_conns = 0);

	virtual ~redis_stream(void);

	/////////////////////////////////////////////////////////////////////

	bool xadd(const char* key, const std::map<string, string>& fields,
		string& result, const char* id = "*");
	bool xadd(const char* key, const std::vector<string>& names,
		const std::vector<string>& values,
		string& result, const char* id = "*");
	bool xadd(const char* key, const std::vector<const char*>& names,
		const std::vector<const char*>& values,
		string& result, const char* id = "*");
	bool xadd(const char* key, const char* names[], const size_t names_len[],
		const char* values[], const size_t values_len[], size_t argc,
		string& result, const char* id = "*");

	/////////////////////////////////////////////////////////////////////

	bool xread(const std::map<string, string>& streams,
		redis_stream_messages& messages,
		size_t count = 0, size_t block = 0);

	/////////////////////////////////////////////////////////////////////

	bool xgroup_create(const char* key, const char* group,
		const char* id = "$");
	int  xgroup_destroy(const char* key, const char* group);
	bool xgroup_setid(const char* key, const char* group,
		const char* id = "$");
	int  xgroup_delconsumer(const char* key, const char* group,
		const char* consumer);

	/////////////////////////////////////////////////////////////////////

private:
	void build(const char* cmd, const char* key, const char* id,
		const std::map<string, string>& fields);
	void build(const char* cmd, const char* key, const char* id,
		const std::vector<string>& names,
		const std::vector<string>& values);
	void build(const char* cmd, const char* key, const char* id,
		const std::vector<const char*>& names,
		const std::vector<const char*>& values);
	void build(const char* cmd, const char* key, const char* id,
		const char* names[], const size_t names_len[],
		const char* values[], const size_t values_len[], size_t argc);
	void xread_build(const std::map<string, string>& streams,
		size_t count, size_t block);
	void xread_streams_results(const redis_result& res,
		redis_stream_messages& messages);
	void xread_stream_messages(const redis_result& child,
		redis_stream_messages& messages);
	bool xread_stream_message(const redis_result& res,
		string& name, string& value);
};

}