#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#include "driver/spi_master.h"

#define RC522_DEFAULT_MISO                 (25)
#define RC522_DEFAULT_MOSI                 (23)
#define RC522_DEFAULT_SCK                  (19)
#define RC522_DEFAULT_SDA                  (22)
#define RC522_DEFAULT_SPI_HOST             (VSPI_HOST)
#define RC522_DEFAULT_SCAN_INTERVAL_MS     (125)
#define RC522_DEFAULT_TACK_STACK_SIZE      (4 * 1024)
#define RC522_DEFAULT_TACK_STACK_PRIORITY  (4)

typedef void(*rc522_tag_callback_t)(uint8_t*);

/* Called when a tag is detected (url != NULL) or removed (sn == NULL, url == NULL).
 * url is the NDEF URI record content, or NULL if no NDEF was found on the tag.
 * The caller must NOT free sn or url — they are freed by the library. */
typedef void(*rc522_ndef_callback_t)(uint8_t* sn, const char* url);

typedef struct {
    int miso_io;                    /*<! MFRC522 MISO gpio (Default: 25) */
    int mosi_io;                    /*<! MFRC522 MOSI gpio (Default: 23) */
    int sck_io;                     /*<! MFRC522 SCK gpio  (Default: 19) */
    int sda_io;                     /*<! MFRC522 SDA gpio  (Default: 22) */
    spi_host_device_t spi_host_id;  /*<! Default VSPI_HOST (SPI3) */
    rc522_tag_callback_t callback;  /*<! Called with 5-byte serial number, or NULL when tag removed */
    rc522_ndef_callback_t ndef_callback; /*<! Called with (sn, url) on tag change; url may be NULL */
    uint16_t scan_interval_ms;      /*<! How fast will ESP32 scan for nearby tags, in miliseconds. Default: 125ms */
    size_t task_stack_size;         /*<! Stack size of rc522 task (Default: 4 * 1024) */
    uint8_t task_priority;          /*<! Priority of rc522 task (Default: 4) */
} rc522_config_t;

typedef rc522_config_t rc522_start_args_t;

/**
 * @brief Initialize RC522 module.
 *        To start scanning tags - call rc522_resume or rc522_start2 function.
 * @param config Configuration
 * @return ESP_OK on success
 */
esp_err_t rc522_init(rc522_config_t* config);

/**
 * @brief Convert serial number (array of 5 bytes) to uint64_t number
 * @param sn Serial number
 * @return Serial number in number representation. If fail, 0 will be retured
 */
uint64_t rc522_sn_to_u64(uint8_t* sn);

/**
 * @brief Check if RC522 is inited
 * @return true if RC522 is inited
 */
bool rc522_is_inited();

/**
 * @brief This function will call rc522_init function and immediately start to scan tags by calling rc522_resume function.
 * @param start_args Configuration
 * @return ESP_OK on success
 */
esp_err_t rc522_start(rc522_start_args_t start_args);

/**
 * @brief Start to scan tags. If already started, ESP_OK will just be returned.
 * @return ESP_OK on success
 */
esp_err_t rc522_start2();

/**
 * @brief Start to scan tags. If already started, ESP_OK will just be returned.
 * @return ESP_OK on success
 */
#define rc522_resume() rc522_start2()

/**
 * @brief Pause scan tags. If already paused, ESP_OK will just be returned.
 * @return ESP_OK on success
 */
esp_err_t rc522_pause();

/**
 * @brief Destroy RC522 and free all resources
 */
void rc522_destroy();

#ifdef __cplusplus
}
#endif