#pragma once

#include "DomoticzHardware.h"

typedef union _i2c_data {
	uint8_t byte[2];
	uint16_t word;
} i2c_data;

class I2C : public CDomoticzHardwareBase
{
      public:
	enum _eI2CType
	{
		I2CTYPE_UNKNOWN = 0,
		I2CTYPE_BMP085,
		I2CTYPE_HTU21D,
		I2CTYPE_TSL2561,
		I2CTYPE_PCF8574,
		I2CTYPE_BME280,
		I2CTYPE_MCP23017
	};
	explicit I2C(int ID, _eI2CType DevType, const std::string &Address, const std::string &SerialPort, int Mode1);
	~I2C() override = default;
	bool WriteToHardware(const char *pdata, unsigned char length) override;

      private:
	bool StartHardware() override;
	bool StopHardware() override;
	void HTU21D_ReadSensorDetails();
	void bmp_Read_BMP_SensorDetails();
	void bmp_Read_BME_SensorDetails();

	bool readBME280ID(int fd, int &ChipID, int &Version);
	bool readBME280All(int fd, float &temp, float &pressure, int &humidity);

	void Do_Work();

	bool i2c_test(const char *I2CBusName);
	int i2c_Open(const char *I2CBusName);

	int ReadInt(int fd, uint8_t *devValues, uint8_t startReg, uint8_t bytesToRead);
	int WriteCmd(int fd, uint8_t devAction);
	int WriteCmdAddr(int fd, uint8_t CmdAddr, uint8_t devAction);

      private:
	std::shared_ptr<std::thread> m_thread;

	_eI2CType m_dev_type;
	uint8_t m_i2c_addr;
	std::string m_ActI2CBus;
	bool m_invert_data;

	// BMP085 stuff
	// Forecast
	uint8_t bmp_CalculateForecast(float pressure);
	uint8_t CalculateForecast(float pressure);
	float m_LastPressure;
	int m_LastMinute;
	float m_pressureSamples[180];
	int m_minuteCount;
	bool m_firstRound;
	float m_pressureAvg[7];
	int m_LastForecast;
	unsigned char m_LastSendForecast;
	int bmp_Calibration(int fd);
	int bmp_WaitForConversion(int fd);
	int bmp_GetPressure(int fd, double *Pres);
	int bmp_GetTemperature(int fd, double *Temp);

	double bmp_altitude(double p);
	double bmp_qnh(double p, double StationAlt);
	double bmp_ppl_DensityAlt(double PAlt, double Temp);

	// Calibration values - These are stored in the BMP085/180
	short int bmp_ac1;
	short int bmp_ac2;
	short int bmp_ac3;
	unsigned short int bmp_ac4;
	unsigned short int bmp_ac5;
	unsigned short int bmp_ac6;
	short int bmp_b1;
	short int bmp_b2;
	int bmp_b5;
	short int bmp_mb;
	short int bmp_mc;
	short int bmp_md;

	// HTU21D stuff
	int HTU21D_checkCRC8(uint16_t data);
	int HTU21D_GetHumidity(int fd, float *Pres);
	int HTU21D_GetTemperature(int fd, float *Temp);

	// TSL2561 stuff
	void TSL2561_ReadSensorDetails();
	void TSL2561_Init();

	// PCF8574
	void PCF8574_ReadChipDetails();
	int PCF8574_WritePin(uint8_t pin_number, uint8_t value);
	int readByteI2C(int fd, uint8_t *byte, uint8_t i2c_addr);
	int writeByteI2C(int fd, uint8_t byte, uint8_t i2c_addr);

	// MCP23017
	void MCP23017_Init();
	void MCP23017_ReadChipDetails();
	int MCP23017_WritePin(uint8_t pin_number, uint8_t value);
	int I2CWriteReg16(int fd, uint8_t reg, uint16_t value);
	int I2CReadReg16(int fd, unsigned char reg, i2c_data *data);
};