/*
 * BLESecurity.h
 *
 *  Created on: Dec 17, 2017
 *      Author: chegewara
 */

#ifndef COMPONENTS_CPP_UTILS_BLESECURITY_H_
#define COMPONENTS_CPP_UTILS_BLESECURITY_H_
#include "sdkconfig.h"
#if defined(CONFIG_BT_ENABLED)

#include <esp_gap_ble_api.h>

class BLESecurity {
public:
	BLESecurity();
	virtual ~BLESecurity();
	void setAuthenticationMode(esp_ble_auth_req_t auth_req);
	void setCapability(esp_ble_io_cap_t iocap);
	void setInitEncryptionKey(uint8_t init_key);
	void setRespEncryptionKey(uint8_t resp_key);
	void setKeySize(uint8_t key_size = 16);
	static char* esp_key_type_to_str(esp_ble_key_type_t key_type);

private:
	esp_ble_auth_req_t m_authReq;
	esp_ble_io_cap_t m_iocap;
	uint8_t m_initKey;
	uint8_t m_respKey;
	uint8_t m_keySize;

}; // BLESecurity


/*
 * @brief Callbacks to handle GAP events related to authorization
 */
class BLESecurityCallbacks {
public:
	virtual ~BLESecurityCallbacks() {};

	/**
	 * @brief Its request from peer device to input authentication pin code displayed on peer device.
	 * It requires that our device is capable to input 6-digits code by end user
	 * @return Return 6-digits integer value from input device
	 */
	virtual uint32_t onPassKeyRequest() = 0;

	/**
	 * @brief Provide us 6-digits code to perform authentication.
	 * It requires that our device is capable to display this code to end user
	 * @param
	 */
	virtual void onPassKeyNotify(uint32_t pass_key) = 0;

	/**
	 * @brief Here we can make decision if we want to let negotiate authorization with peer device or not
	 * return Return true if we accept this peer device request
	 */

	virtual bool onSecurityRequest() = 0 ;
	/**
	 * Provide us information when authentication process is completed
	 */
	virtual void onAuthenticationComplete(esp_ble_auth_cmpl_t) = 0;

	virtual bool onConfirmPIN(uint32_t pin) = 0;
}; // BLESecurityCallbacks

#endif // CONFIG_BT_ENABLED
#endif // COMPONENTS_CPP_UTILS_BLESECURITY_H_