/*********************************************************************
 *
 *  $Id: svn_id $
 *
 *  Declares yFindPower(), the high-level API for Power functions
 *
 *  - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
 *  Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
 *  with Yoctopuce products.
 *
 *  You may reproduce and distribute copies of this file in
 *  source or object form, as long as the sole purpose of this
 *  code is to interface with Yoctopuce products. You must retain
 *  this notice in the distributed source file.
 *
 *  You should refer to Yoctopuce General Terms and Conditions
 *  for additional information regarding your rights and
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 *
 *  THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
 *  WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
 *  EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
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 *********************************************************************/

#include "yocto_api.h"
CF_EXTERN_C_BEGIN
NS_ASSUME_NONNULL_BEGIN

@class YPower;

//--- (YPower globals)
typedef void (*YPowerValueCallback)(YPower *func, NSString *functionValue);
typedef void (*YPowerTimedReportCallback)(YPower *func, YMeasure *measure);
#define Y_POWERFACTOR_INVALID           YAPI_INVALID_DOUBLE
#define Y_COSPHI_INVALID                YAPI_INVALID_DOUBLE
#define Y_METER_INVALID                 YAPI_INVALID_DOUBLE
#define Y_DELIVEREDENERGYMETER_INVALID  YAPI_INVALID_DOUBLE
#define Y_RECEIVEDENERGYMETER_INVALID   YAPI_INVALID_DOUBLE
#define Y_METERTIMER_INVALID            YAPI_INVALID_UINT
//--- (end of YPower globals)

//--- (YPower class start)
/**
 * YPower Class: electrical power sensor control interface, available for instance in the Yocto-Watt
 *
 * The YPower class allows you to read and configure Yoctopuce electrical power sensors.
 * It inherits from YSensor class the core functions to read measurements,
 * to register callback functions, and to access the autonomous datalogger.
 * This class adds the ability to access the energy counter and the power factor.
 */
@interface YPower : YSensor
//--- (end of YPower class start)
{
@protected
//--- (YPower attributes declaration)
    double          _powerFactor;
    double          _cosPhi;
    double          _meter;
    double          _deliveredEnergyMeter;
    double          _receivedEnergyMeter;
    int             _meterTimer;
    YPowerValueCallback _valueCallbackPower;
    YPowerTimedReportCallback _timedReportCallbackPower;
//--- (end of YPower attributes declaration)
}
// Constructor is protected, use yFindPower factory function to instantiate
-(id)    initWith:(NSString*) func;

//--- (YPower private methods declaration)
// Function-specific method for parsing of JSON output and caching result
-(int)             _parseAttr:(yJsonStateMachine*) j;

//--- (end of YPower private methods declaration)
//--- (YPower yapiwrapper declaration)
//--- (end of YPower yapiwrapper declaration)
//--- (YPower public methods declaration)
/**
 * Returns the power factor (PF), i.e. ratio between the active power consumed (in W)
 * and the apparent power provided (VA).
 *
 * @return a floating point number corresponding to the power factor (PF), i.e
 *
 * On failure, throws an exception or returns YPower.POWERFACTOR_INVALID.
 */
-(double)     get_powerFactor;


-(double) powerFactor;
/**
 * Returns the Displacement Power factor (DPF), i.e. cosine of the phase shift between
 * the voltage and current fundamentals.
 * On the Yocto-Watt (V1), the value returned by this method correponds to the
 * power factor as this device is cannot estimate the true DPF.
 *
 * @return a floating point number corresponding to the Displacement Power factor (DPF), i.e
 *
 * On failure, throws an exception or returns YPower.COSPHI_INVALID.
 */
-(double)     get_cosPhi;


-(double) cosPhi;
-(int)     set_meter:(double) newval;
-(int)     setMeter:(double) newval;

/**
 * Returns the energy counter, maintained by the wattmeter by integrating the
 * power consumption over time. This is the sum of forward and backwad energy transfers,
 * if you are insterested in only one direction, use  get_receivedEnergyMeter() or
 * get_deliveredEnergyMeter(). Note that this counter is reset at each start of the device.
 *
 * @return a floating point number corresponding to the energy counter, maintained by the wattmeter by
 * integrating the
 *         power consumption over time
 *
 * On failure, throws an exception or returns YPower.METER_INVALID.
 */
-(double)     get_meter;


-(double) meter;
/**
 * Returns the energy counter, maintained by the wattmeter by integrating the power consumption over time,
 * but only when positive. Note that this counter is reset at each start of the device.
 *
 * @return a floating point number corresponding to the energy counter, maintained by the wattmeter by
 * integrating the power consumption over time,
 *         but only when positive
 *
 * On failure, throws an exception or returns YPower.DELIVEREDENERGYMETER_INVALID.
 */
-(double)     get_deliveredEnergyMeter;


-(double) deliveredEnergyMeter;
/**
 * Returns the energy counter, maintained by the wattmeter by integrating the power consumption over time,
 * but only when negative. Note that this counter is reset at each start of the device.
 *
 * @return a floating point number corresponding to the energy counter, maintained by the wattmeter by
 * integrating the power consumption over time,
 *         but only when negative
 *
 * On failure, throws an exception or returns YPower.RECEIVEDENERGYMETER_INVALID.
 */
-(double)     get_receivedEnergyMeter;


-(double) receivedEnergyMeter;
/**
 * Returns the elapsed time since last energy counter reset, in seconds.
 *
 * @return an integer corresponding to the elapsed time since last energy counter reset, in seconds
 *
 * On failure, throws an exception or returns YPower.METERTIMER_INVALID.
 */
-(int)     get_meterTimer;


-(int) meterTimer;
/**
 * Retrieves a electrical power sensor for a given identifier.
 * The identifier can be specified using several formats:
 *
 * - FunctionLogicalName
 * - ModuleSerialNumber.FunctionIdentifier
 * - ModuleSerialNumber.FunctionLogicalName
 * - ModuleLogicalName.FunctionIdentifier
 * - ModuleLogicalName.FunctionLogicalName
 *
 *
 * This function does not require that the electrical power sensor is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method YPower.isOnline() to test if the electrical power sensor is
 * indeed online at a given time. In case of ambiguity when looking for
 * a electrical power sensor by logical name, no error is notified: the first instance
 * found is returned. The search is performed first by hardware name,
 * then by logical name.
 *
 * If a call to this object's is_online() method returns FALSE although
 * you are certain that the matching device is plugged, make sure that you did
 * call registerHub() at application initialization time.
 *
 * @param func : a string that uniquely characterizes the electrical power sensor, for instance
 *         YWATTMK1.power.
 *
 * @return a YPower object allowing you to drive the electrical power sensor.
 */
+(YPower*)     FindPower:(NSString*)func;

/**
 * Registers the callback function that is invoked on every change of advertised value.
 * The callback is then invoked only during the execution of ySleep or yHandleEvents.
 * This provides control over the time when the callback is triggered. For good responsiveness,
 * remember to call one of these two functions periodically. The callback is called once juste after beeing
 * registered, passing the current advertised value  of the function, provided that it is not an empty string.
 * To unregister a callback, pass a nil pointer as argument.
 *
 * @param callback : the callback function to call, or a nil pointer. The callback function should take two
 *         arguments: the function object of which the value has changed, and the character string describing
 *         the new advertised value.
 * @noreturn
 */
-(int)     registerValueCallback:(YPowerValueCallback _Nullable)callback;

-(int)     _invokeValueCallback:(NSString*)value;

/**
 * Registers the callback function that is invoked on every periodic timed notification.
 * The callback is invoked only during the execution of ySleep or yHandleEvents.
 * This provides control over the time when the callback is triggered. For good responsiveness, remember to call
 * one of these two functions periodically. To unregister a callback, pass a nil pointer as argument.
 *
 * @param callback : the callback function to call, or a nil pointer. The callback function should take two
 *         arguments: the function object of which the value has changed, and an YMeasure object describing
 *         the new advertised value.
 * @noreturn
 */
-(int)     registerTimedReportCallback:(YPowerTimedReportCallback _Nullable)callback;

-(int)     _invokeTimedReportCallback:(YMeasure*)value;

/**
 * Resets the energy counters.
 *
 * @return YAPI.SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
-(int)     reset;


/**
 * Continues the enumeration of electrical power sensors started using yFirstPower().
 * Caution: You can't make any assumption about the returned electrical power sensors order.
 * If you want to find a specific a electrical power sensor, use Power.findPower()
 * and a hardwareID or a logical name.
 *
 * @return a pointer to a YPower object, corresponding to
 *         a electrical power sensor currently online, or a nil pointer
 *         if there are no more electrical power sensors to enumerate.
 */
-(nullable YPower*) nextPower
NS_SWIFT_NAME(nextPower());
/**
 * Starts the enumeration of electrical power sensors currently accessible.
 * Use the method YPower.nextPower() to iterate on
 * next electrical power sensors.
 *
 * @return a pointer to a YPower object, corresponding to
 *         the first electrical power sensor currently online, or a nil pointer
 *         if there are none.
 */
+(nullable YPower*) FirstPower
NS_SWIFT_NAME(FirstPower());
//--- (end of YPower public methods declaration)

@end

//--- (YPower functions declaration)
/**
 * Retrieves a electrical power sensor for a given identifier.
 * The identifier can be specified using several formats:
 *
 * - FunctionLogicalName
 * - ModuleSerialNumber.FunctionIdentifier
 * - ModuleSerialNumber.FunctionLogicalName
 * - ModuleLogicalName.FunctionIdentifier
 * - ModuleLogicalName.FunctionLogicalName
 *
 *
 * This function does not require that the electrical power sensor is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method YPower.isOnline() to test if the electrical power sensor is
 * indeed online at a given time. In case of ambiguity when looking for
 * a electrical power sensor by logical name, no error is notified: the first instance
 * found is returned. The search is performed first by hardware name,
 * then by logical name.
 *
 * If a call to this object's is_online() method returns FALSE although
 * you are certain that the matching device is plugged, make sure that you did
 * call registerHub() at application initialization time.
 *
 * @param func : a string that uniquely characterizes the electrical power sensor, for instance
 *         YWATTMK1.power.
 *
 * @return a YPower object allowing you to drive the electrical power sensor.
 */
YPower* yFindPower(NSString* func);
/**
 * Starts the enumeration of electrical power sensors currently accessible.
 * Use the method YPower.nextPower() to iterate on
 * next electrical power sensors.
 *
 * @return a pointer to a YPower object, corresponding to
 *         the first electrical power sensor currently online, or a nil pointer
 *         if there are none.
 */
YPower* yFirstPower(void);

//--- (end of YPower functions declaration)

NS_ASSUME_NONNULL_END
CF_EXTERN_C_END

