api.h

#ifndef API_H
#define API_H

#include <sys/types.h>

#include <cstdint>

namespace blue
{
// API result codes
constexpr uint32_t OP_SUCCESS = 0x0000;
constexpr uint32_t OP_FAIL    = 0x0001;
constexpr uint32_t OP_BUSY    = 0x0002;

constexpr size_t MAX_RPC_MSG_SIZE = 4096;

constexpr uint32_t OP_SCAN_START = 0x0001;
struct msg_scan_reply
{
	uint32_t result;
} __attribute((packed));
constexpr uint32_t OP_SCAN_ITEM = 0x0002;
struct msg_scan_item
{
	char name[512];
} __attribute((packed));
constexpr uint32_t OP_SCAN_DONE = 0x0003;
struct msg_pair_request
{
	char name[512];
} __attribute((packed));
constexpr uint32_t OP_PAIR_REQUEST = 0x0004;
constexpr uint32_t OP_PAIR_START = 0x0005;
constexpr uint32_t OP_PAIR_UNKNOWN = 0x0006;
constexpr uint32_t OP_PAIR_ERROR = 0x0007;

struct msg_empty_body {};

struct rpc_msg
{
	uint32_t op;
	union
	{
		msg_empty_body empty;
		msg_scan_reply scan_reply;
		msg_scan_item scan_item;
		msg_pair_request pair_request;
	} body;
} __attribute((packed));
static_assert(sizeof(rpc_msg) <= MAX_RPC_MSG_SIZE);

}

#endif // API_H