#ifndef MAIN_H
#define MAIN_H

#define Master_SlavePin 23
#define MAX_PAYLOAD_SIZE 250

#define ESPNOW_QUEUE_SIZE 6
#define IS_BROADCAST_ADDR(addr)                                                \
  (memcmp(addr, s_broadcast_mac, ESP_NOW_ETH_ALEN) == 0)

static bool isMaster;

typedef enum {
  EXAMPLE_ESPNOW_SEND_CB,
  EXAMPLE_ESPNOW_RECV_CB,
} espnow_event_id_t;

typedef struct {
  uint8_t mac_addr[ESP_NOW_ETH_ALEN];
  esp_now_send_status_t status;
} espnow_event_send_cb_t;

typedef struct {
  uint8_t mac_addr[ESP_NOW_ETH_ALEN];
  uint8_t *data;
  int data_len;
} espnow_event_recv_cb_t;

typedef union {
  espnow_event_send_cb_t send_cb;
  espnow_event_recv_cb_t recv_cb;
} espnow_event_info_t;

typedef struct {
  espnow_event_id_t id;
  espnow_event_info_t info;
} espnow_event_t;

enum {
  EXAMPLE_ESPNOW_DATA_BROADCAST,
  EXAMPLE_ESPNOW_DATA_UNICAST,
  EXAMPLE_ESPNOW_DATA_MAX,
};

typedef struct {
  bool isMaster;
} __attribute__((packed)) payloadData;

/* User defined field of ESPNOW data in this example. */
typedef struct {
  uint8_t type;  // Broadcast or unicast ESPNOW data.
  uint8_t state; // Indicate that if has received broadcast ESPNOW data or not.
  uint16_t seq_num; // Sequence number of ESPNOW data.
  uint16_t crc;     // CRC16 value of ESPNOW data.
  uint32_t magic;   // Magic number which is used to determine which device to
                  // send unicast ESPNOW data.
  payloadData payload; // Real payload of ESPNOW data.
} __attribute__((packed)) espnow_data_t;

static_assert(sizeof(espnow_data_t) <= MAX_PAYLOAD_SIZE, "payloadData struct is too big to be sent in one part, keep it under 250 Bytes!");


typedef struct {
  bool unicast;   // Send unicast ESPNOW data.
  bool broadcast; // Send broadcast ESPNOW data.
  uint8_t state;  // Indicate that if has received broadcast ESPNOW data or not.
  uint32_t magic; // Magic number which is used to determine which device to
                  // send unicast ESPNOW data.
  uint16_t count; // Total count of unicast ESPNOW data to be sent.
  uint16_t delay; // Delay between sending two ESPNOW data, unit: ms.
  int len;        // Length of ESPNOW data to be sent, unit: byte.
  uint8_t *buffer;                    // Buffer pointing to ESPNOW data.
  uint8_t dest_mac[ESP_NOW_ETH_ALEN]; // MAC address of destination device.
} espnow_send_param_t;

#endif