/*********************************************************************
 *
 *  $Id: svn_id $
 *
 *  Implements yFindLed(), the high-level API for Led 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.
 *
 *********************************************************************/


#define _CRT_SECURE_NO_DEPRECATE //do not use windows secure crt
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>

#include "yocto_led.h"
#include "yapi/yjson.h"
#include "yapi/yapi.h"
#define  __FILE_ID__  "led"

#ifdef YOCTOLIB_NAMESPACE
using namespace YOCTOLIB_NAMESPACE;
#endif

YLed::YLed(const string& func): YFunction(func)
//--- (YLed initialization)
    ,_power(POWER_INVALID)
    ,_luminosity(LUMINOSITY_INVALID)
    ,_blinking(BLINKING_INVALID)
    ,_valueCallbackLed(NULL)
//--- (end of YLed initialization)
{
    _className="Led";
}

YLed::~YLed()
{
//--- (YLed cleanup)
//--- (end of YLed cleanup)
}
//--- (YLed implementation)
// static attributes

int YLed::_parseAttr(YJSONObject *json_val)
{
    if(json_val->has("power")) {
        _power =  (Y_POWER_enum)json_val->getInt("power");
    }
    if(json_val->has("luminosity")) {
        _luminosity =  json_val->getInt("luminosity");
    }
    if(json_val->has("blinking")) {
        _blinking =  (Y_BLINKING_enum)json_val->getInt("blinking");
    }
    return YFunction::_parseAttr(json_val);
}


/**
 * Returns the current LED state.
 *
 * @return either YLed::POWER_OFF or YLed::POWER_ON, according to the current LED state
 *
 * On failure, throws an exception or returns YLed::POWER_INVALID.
 */
Y_POWER_enum YLed::get_power(void)
{
    Y_POWER_enum res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::_yapiContext.GetCacheValidity()) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YLed::POWER_INVALID;
                }
            }
        }
        res = _power;
    } catch (std::exception &) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Changes the state of the LED.
 *
 * @param newval : either YLed::POWER_OFF or YLed::POWER_ON, according to the state of the LED
 *
 * @return YAPI::SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
int YLed::set_power(Y_POWER_enum newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        rest_val = (newval>0 ? "1" : "0");
        res = _setAttr("power", rest_val);
    } catch (std::exception &) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Returns the current LED intensity (in per cent).
 *
 * @return an integer corresponding to the current LED intensity (in per cent)
 *
 * On failure, throws an exception or returns YLed::LUMINOSITY_INVALID.
 */
int YLed::get_luminosity(void)
{
    int res = 0;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::_yapiContext.GetCacheValidity()) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YLed::LUMINOSITY_INVALID;
                }
            }
        }
        res = _luminosity;
    } catch (std::exception &) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Changes the current LED intensity (in per cent). Remember to call the
 * saveToFlash() method of the module if the modification must be kept.
 *
 * @param newval : an integer corresponding to the current LED intensity (in per cent)
 *
 * @return YAPI::SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
int YLed::set_luminosity(int newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        char buf[32]; SAFE_SPRINTF(buf, 32, "%d", newval); rest_val = string(buf);
        res = _setAttr("luminosity", rest_val);
    } catch (std::exception &) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Returns the current LED signaling mode.
 *
 * @return a value among YLed::BLINKING_STILL, YLed::BLINKING_RELAX, YLed::BLINKING_AWARE,
 * YLed::BLINKING_RUN, YLed::BLINKING_CALL and YLed::BLINKING_PANIC corresponding to the current LED signaling mode
 *
 * On failure, throws an exception or returns YLed::BLINKING_INVALID.
 */
Y_BLINKING_enum YLed::get_blinking(void)
{
    Y_BLINKING_enum res;
    yEnterCriticalSection(&_this_cs);
    try {
        if (_cacheExpiration <= YAPI::GetTickCount()) {
            if (this->_load_unsafe(YAPI::_yapiContext.GetCacheValidity()) != YAPI_SUCCESS) {
                {
                    yLeaveCriticalSection(&_this_cs);
                    return YLed::BLINKING_INVALID;
                }
            }
        }
        res = _blinking;
    } catch (std::exception &) {
        yLeaveCriticalSection(&_this_cs);
        throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Changes the current LED signaling mode.
 *
 * @param newval : a value among YLed::BLINKING_STILL, YLed::BLINKING_RELAX, YLed::BLINKING_AWARE,
 * YLed::BLINKING_RUN, YLed::BLINKING_CALL and YLed::BLINKING_PANIC corresponding to the current LED signaling mode
 *
 * @return YAPI::SUCCESS if the call succeeds.
 *
 * On failure, throws an exception or returns a negative error code.
 */
int YLed::set_blinking(Y_BLINKING_enum newval)
{
    string rest_val;
    int res;
    yEnterCriticalSection(&_this_cs);
    try {
        char buf[32]; SAFE_SPRINTF(buf, 32, "%d", newval); rest_val = string(buf);
        res = _setAttr("blinking", rest_val);
    } catch (std::exception &) {
         yLeaveCriticalSection(&_this_cs);
         throw;
    }
    yLeaveCriticalSection(&_this_cs);
    return res;
}

/**
 * Retrieves a monochrome LED 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 monochrome LED is online at the time
 * it is invoked. The returned object is nevertheless valid.
 * Use the method isOnline() to test if the monochrome LED is
 * indeed online at a given time. In case of ambiguity when looking for
 * a monochrome LED 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 monochrome LED, for instance
 *         YBUZZER2.led1.
 *
 * @return a YLed object allowing you to drive the monochrome LED.
 */
YLed* YLed::FindLed(string func)
{
    YLed* obj = NULL;
    int taken = 0;
    if (YAPI::_apiInitialized) {
        yEnterCriticalSection(&YAPI::_global_cs);
        taken = 1;
    }try {
        obj = (YLed*) YFunction::_FindFromCache("Led", func);
        if (obj == NULL) {
            obj = new YLed(func);
            YFunction::_AddToCache("Led", func, obj);
        }
    } catch (std::exception &) {
        if (taken) yLeaveCriticalSection(&YAPI::_global_cs);
        throw;
    }
    if (taken) yLeaveCriticalSection(&YAPI::_global_cs);
    return obj;
}

/**
 * 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 NULL pointer as argument.
 *
 * @param callback : the callback function to call, or a NULL 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 YLed::registerValueCallback(YLedValueCallback callback)
{
    string val;
    if (callback != NULL) {
        YFunction::_UpdateValueCallbackList(this, true);
    } else {
        YFunction::_UpdateValueCallbackList(this, false);
    }
    _valueCallbackLed = callback;
    // Immediately invoke value callback with current value
    if (callback != NULL && this->isOnline()) {
        val = _advertisedValue;
        if (!(val == "")) {
            this->_invokeValueCallback(val);
        }
    }
    return 0;
}

int YLed::_invokeValueCallback(string value)
{
    if (_valueCallbackLed != NULL) {
        _valueCallbackLed(this, value);
    } else {
        YFunction::_invokeValueCallback(value);
    }
    return 0;
}

YLed *YLed::nextLed(void)
{
    string  hwid;

    if(YISERR(_nextFunction(hwid)) || hwid=="") {
        return NULL;
    }
    return YLed::FindLed(hwid);
}

YLed *YLed::FirstLed(void)
{
    vector<YFUN_DESCR>   v_fundescr;
    YDEV_DESCR             ydevice;
    string              serial, funcId, funcName, funcVal, errmsg;

    if(YISERR(YapiWrapper::getFunctionsByClass("Led", 0, v_fundescr, sizeof(YFUN_DESCR), errmsg)) ||
       v_fundescr.size() == 0 ||
       YISERR(YapiWrapper::getFunctionInfo(v_fundescr[0], ydevice, serial, funcId, funcName, funcVal, errmsg))) {
        return NULL;
    }
    return YLed::FindLed(serial+"."+funcId);
}

//--- (end of YLed implementation)

//--- (YLed functions)
//--- (end of YLed functions)
