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#ifndef __ARDUINO_OTA_H

#define __ARDUINO_OTA_H

#include <ESP8266WiFi.h>

#include <WiFiUdp.h>

class UdpContext;

#define OTA_CALLBACK(callback) void (*callback)()

#define OTA_CALLBACK_PROGRESS(callback) void (*callback)(unsigned int, unsigned int)

#define OTA_CALLBACK_ERROR(callback) void (*callback)(ota_error_t)

typedef enum {

OTA_IDLE,

OTA_WAITAUTH,

OTA_RUNUPDATE

} ota_state_t;

typedef enum {

OTA_AUTH_ERROR,

OTA_BEGIN_ERROR,

OTA_CONNECT_ERROR,

OTA_RECEIVE_ERROR,

OTA_END_ERROR

} ota_error_t;

class ArduinoOTAClass

{

public:

ArduinoOTAClass();

~ArduinoOTAClass();

void setPort(uint16_t port);

void setHostname(const char *hostname);

void setPassword(const char *password);

void onStart(OTA_CALLBACK(fn));

void onEnd(OTA_CALLBACK(fn));

void onProgress(OTA_CALLBACK_PROGRESS(fn));

void onError(OTA_CALLBACK_ERROR (fn));

void begin();

void handle();

private:

int _port;

String _password;

String _hostname;

String _nonce;

UdpContext *_udp_ota;

bool _initialized;

ota_state_t _state;

int _size;

int _cmd;

int _ota_port;

IPAddress _ota_ip;

String _md5;

OTA_CALLBACK(_start_callback);

OTA_CALLBACK(_end_callback);

OTA_CALLBACK_ERROR(_error_callback);

OTA_CALLBACK_PROGRESS(_progress_callback);

void _runUpdate(void);

void _onRx(void);

int parseInt(void);

String readStringUntil(char end);

};

extern ArduinoOTAClass ArduinoOTA;

#endif /* __ARDUINO_OTA_H */