/*********************************************************************
 *
 *  $Id: svn_id $
 *
 *  Implements the high-level API for VirtualSensor 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
 *  obligations.
 *
 *  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,
 *  INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
 *  COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
 *  SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
 *  LIMITED TO ANY DEFENSE THEREOF), ANY CLAIMS FOR INDEMNITY OR
 *  CONTRIBUTION, OR OTHER SIMILAR COSTS, WHETHER ASSERTED ON THE
 *  BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE), BREACH OF
 *  WARRANTY, OR OTHERWISE.
 *
 *********************************************************************/


#import "yocto_virtualsensor.h"
#include "yapi/yjson.h"
#include "yapi/yapi.h"


@implementation YVirtualSensor
// Constructor is protected, use yFindVirtualSensor factory function to instantiate
-(id)              initWith:(NSString*) func
{
   if(!(self = [super initWith:func]))
          return nil;
    _className = @"VirtualSensor";
//--- (YVirtualSensor attributes initialization)
    _invalidValue = Y_INVALIDVALUE_INVALID;
    _valueCallbackVirtualSensor = NULL;
    _timedReportCallbackVirtualSensor = NULL;
//--- (end of YVirtualSensor attributes initialization)
    return self;
}
//--- (YVirtualSensor yapiwrapper)
//--- (end of YVirtualSensor yapiwrapper)
// destructor
-(void)  dealloc
{
//--- (YVirtualSensor cleanup)
    ARC_dealloc(super);
//--- (end of YVirtualSensor cleanup)
}
//--- (YVirtualSensor private methods implementation)

-(int) _parseAttr:(yJsonStateMachine*) j
{
    if(!strcmp(j->token, "invalidValue")) {
        if(yJsonParse(j) != YJSON_PARSE_AVAIL) return -1;
        _invalidValue =  floor(atof(j->token) / 65.536 + 0.5) / 1000.0;
        return 1;
    }
    return [super _parseAttr:j];
}
//--- (end of YVirtualSensor private methods implementation)
//--- (YVirtualSensor public methods implementation)

/**
 * Changes the measuring unit for the measured value.
 * Remember to call the saveToFlash() method of the module if the
 * modification must be kept.
 *
 * @param newval : a string corresponding to the measuring unit for the measured value
 *
 * @return YAPI.SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
-(int) set_unit:(NSString*) newval
{
    return [self setUnit:newval];
}
-(int) setUnit:(NSString*) newval
{
    NSString* rest_val;
    rest_val = newval;
    return [self _setAttr:@"unit" :rest_val];
}

/**
 * Changes the current value of the sensor (raw value, before calibration).
 *
 * @param newval : a floating point number corresponding to the current value of the sensor (raw
 * value, before calibration)
 *
 * @return YAPI.SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
-(int) set_currentRawValue:(double) newval
{
    return [self setCurrentRawValue:newval];
}
-(int) setCurrentRawValue:(double) newval
{
    NSString* rest_val;
    rest_val = [NSString stringWithFormat:@"%ld",(s64)floor(newval * 65536.0 + 0.5)];
    return [self _setAttr:@"currentRawValue" :rest_val];
}

-(int) set_sensorState:(int) newval
{
    return [self setSensorState:newval];
}
-(int) setSensorState:(int) newval
{
    NSString* rest_val;
    rest_val = [NSString stringWithFormat:@"%d", newval];
    return [self _setAttr:@"sensorState" :rest_val];
}

/**
 * Changes the invalid value of the sensor, returned if the sensor is read when in invalid state
 * (for instance before having been set). Remember to call the saveToFlash()
 * method of the module if the modification must be kept.
 *
 * @param newval : a floating point number corresponding to the invalid value of the sensor, returned
 * if the sensor is read when in invalid state
 *         (for instance before having been set)
 *
 * @return YAPI.SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
-(int) set_invalidValue:(double) newval
{
    return [self setInvalidValue:newval];
}
-(int) setInvalidValue:(double) newval
{
    NSString* rest_val;
    rest_val = [NSString stringWithFormat:@"%ld",(s64)floor(newval * 65536.0 + 0.5)];
    return [self _setAttr:@"invalidValue" :rest_val];
}
/**
 * Returns the invalid value of the sensor, returned if the sensor is read when in invalid state
 * (for instance before having been set).
 *
 * @return a floating point number corresponding to the invalid value of the sensor, returned if the
 * sensor is read when in invalid state
 *         (for instance before having been set)
 *
 * On failure, throws an exception or returns YVirtualSensor.INVALIDVALUE_INVALID.
 */
-(double) get_invalidValue
{
    double res;
    if (_cacheExpiration <= [YAPI GetTickCount]) {
        if ([self load:[YAPI_yapiContext GetCacheValidity]] != YAPI_SUCCESS) {
            return Y_INVALIDVALUE_INVALID;
        }
    }
    res = _invalidValue;
    return res;
}


-(double) invalidValue
{
    return [self get_invalidValue];
}
/**
 * Retrieves a virtual 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 virtual sensor is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method YVirtualSensor.isOnline() to test if the virtual sensor is
 * indeed online at a given time. In case of ambiguity when looking for
 * a virtual 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 virtual sensor, for instance
 *         MyDevice.virtualSensor1.
 *
 * @return a YVirtualSensor object allowing you to drive the virtual sensor.
 */
+(YVirtualSensor*) FindVirtualSensor:(NSString*)func
{
    YVirtualSensor* obj;
    obj = (YVirtualSensor*) [YFunction _FindFromCache:@"VirtualSensor" :func];
    if (obj == nil) {
        obj = ARC_sendAutorelease([[YVirtualSensor alloc] initWith:func]);
        [YFunction _AddToCache:@"VirtualSensor" :func :obj];
    }
    return obj;
}

/**
 * Registers the callback function that is invoked on every change of advertised value.
 * 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 the character string describing
 *         the new advertised value.
 * @noreturn
 */
-(int) registerValueCallback:(YVirtualSensorValueCallback _Nullable)callback
{
    NSString* val;
    if (callback != NULL) {
        [YFunction _UpdateValueCallbackList:self :YES];
    } else {
        [YFunction _UpdateValueCallbackList:self :NO];
    }
    _valueCallbackVirtualSensor = callback;
    // Immediately invoke value callback with current value
    if (callback != NULL && [self isOnline]) {
        val = _advertisedValue;
        if (!([val isEqualToString:@""])) {
            [self _invokeValueCallback:val];
        }
    }
    return 0;
}

-(int) _invokeValueCallback:(NSString*)value
{
    if (_valueCallbackVirtualSensor != NULL) {
        _valueCallbackVirtualSensor(self, value);
    } else {
        [super _invokeValueCallback:value];
    }
    return 0;
}

/**
 * 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:(YVirtualSensorTimedReportCallback _Nullable)callback
{
    YSensor* sensor;
    sensor = self;
    if (callback != NULL) {
        [YFunction _UpdateTimedReportCallbackList:sensor :YES];
    } else {
        [YFunction _UpdateTimedReportCallbackList:sensor :NO];
    }
    _timedReportCallbackVirtualSensor = callback;
    return 0;
}

-(int) _invokeTimedReportCallback:(YMeasure*)value
{
    if (_timedReportCallbackVirtualSensor != NULL) {
        _timedReportCallbackVirtualSensor(self, value);
    } else {
        [super _invokeTimedReportCallback:value];
    }
    return 0;
}

/**
 * Changes the current sensor state to invalid (as if no value would have been ever set).
 *
 * @return YAPI.SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
-(int) set_sensorAsInvalid
{
    return [self set_sensorState:1];
}


-(YVirtualSensor*)   nextVirtualSensor
{
    NSString  *hwid;

    if(YISERR([self _nextFunction:&hwid]) || [hwid isEqualToString:@""]) {
        return NULL;
    }
    return [YVirtualSensor FindVirtualSensor:hwid];
}

+(YVirtualSensor *) FirstVirtualSensor
{
    NSMutableArray    *ar_fundescr;
    YDEV_DESCR        ydevice;
    NSString          *serial, *funcId, *funcName, *funcVal;

    if(!YISERR([YapiWrapper getFunctionsByClass:@"VirtualSensor":0:&ar_fundescr:NULL]) && [ar_fundescr count] > 0){
        NSNumber*  ns_devdescr = [ar_fundescr objectAtIndex:0];
        if (!YISERR([YapiWrapper getFunctionInfo:[ns_devdescr intValue] :&ydevice :&serial :&funcId :&funcName :&funcVal :NULL])) {
            return  [YVirtualSensor FindVirtualSensor:[NSString stringWithFormat:@"%@.%@",serial,funcId]];
        }
    }
    return nil;
}

//--- (end of YVirtualSensor public methods implementation)
@end

//--- (YVirtualSensor functions)

YVirtualSensor *yFindVirtualSensor(NSString* func)
{
    return [YVirtualSensor FindVirtualSensor:func];
}

YVirtualSensor *yFirstVirtualSensor(void)
{
    return [YVirtualSensor FirstVirtualSensor];
}

//--- (end of YVirtualSensor functions)

