#pragma once
#include <stdint.h>

#include "zaf_ecode.h"
#include "zaf_port.h"
#include "zaf_regs.hpp"

#pragma pack(1)

#define VERSION(main, sub, fix) (main << 16 | sub << 8 | fix << 0)

#define VERSION_MAIN(v) ((v >> 16) & 0xFF)
#define VERSION_SUB(v)  ((v >> 8) & 0xFF)
#define VERSION_FIX(v)  ((v >> 0) & 0xFF)

#define PACKET_HEADER 0x5A5A
#define PACKET_TAIL   0xA5A5

typedef struct {
  uint16_t packet_header;
  uint16_t packet_type;  // zaf_protocol_packet_type_t
  uint16_t index;        //
  uint16_t cmd;          // zaf_protocol_cmd_t
  uint16_t ndata;        //
  uint32_t data[];       // first is always checksum
} zaf_packet_header_t;
#pragma pack()

/**
 * @brief CMD
 */
typedef enum {
  kzaf_cmd_none              = 0,
  kzaf_cmd_reg_read          = 1,
  kzaf_cmd_reg_write         = 2,
  kzaf_cmd_reg_read_regs     = 3,
  kzaf_cmd_generator_new_mac = 4,
  kzaf_cmd_factory_reset     = 5,
  kzaf_cmd_reboot            = 6,
  kzaf_cmd_storage_cfg       = 7,
} zaf_protocol_cmd_t;

typedef enum {
  kzaf_packet_type_cmd     = 0,
  kzaf_packet_type_receipt = 1,
  kzaf_packet_type_report  = 2,
  kzaf_packet_type_heart   = 3,
} zaf_protocol_packet_type_t;

typedef enum {
  obtaining_ip_mode_type_static = 0,
  obtaining_ip_mode_type_dhcp   = 1,
} obtaining_ip_mode_t;
static inline const char* obtaining_ip_mode_to_string(obtaining_ip_mode_t mode) {
  switch (mode) {
    case obtaining_ip_mode_type_static:
      return "static";
    case obtaining_ip_mode_type_dhcp:
      return "dhcp";
    default:
      return "unknown";
  }
}