#ifndef CORE_USB_USB_CALLBACK_EVENT
#define CORE_USB_USB_CALLBACK_EVENT

#include <stdint.h>

#include "usb_device_types.h"

/**
 * Callback event type. 
 */
typedef enum {
    USB_CBEVT_OUT,        ///< OUT event
    USB_CBEVT_IN,         ///< IN event
    USB_CBEVT_UNKNOWN_REQ ///< unknown request on a control endpoint
} Usb_CallbackEventType;

/**
 * Callback event subtype.
 */
typedef enum {
    USB_CBEVST_IN_NONE = 0, ///< No subtype
    USB_CBEVST_IN_REQ       ///< IN request was received but could not be responded
} Usb_CallbackEventSubType;

/**
 * USB callback event.
 */
typedef struct {
    uint8_t type : 4;                      ///< Event type
    uint8_t subtype : 4;                   ///< Event subtype
    uint8_t ep;                            ///< Endpoint number
    uint8_t dir;                           ///< Endpoint direction
    uint8_t size;                          ///< Size of accompaining data
    const uint8_t *data;                   ///< Event data
    const USB_SetupRequest *setup_request; ///< Corresponding setup request (if exists)

    bool reply_valid;          ///< Reply message is valid
    const uint8_t *reply_data; ///< Reply data
    uint8_t reply_size;        ///< Reply size
    bool arm_out_endpoint;     ///< Automatically arm OUT endpoint at the end of the current transmission
} Usb_CallbackEvent;

#endif /* CORE_USB_USB_CALLBACK_EVENT */