<?php
namespace Yoctopuce\YoctoAPI;

/**
 * YCarbonDioxide Class: CO2 sensor control interface, available for instance in the Yocto-CO2-V2
 *
 * The YCarbonDioxide class allows you to read and configure Yoctopuce CO2 sensors.
 * It inherits from YSensor class the core functions to read measures,
 * to register callback functions, and to access the autonomous datalogger.
 * This class adds the ability to perform manual calibration if required.
 */
class YCarbonDioxide extends YSensor
{
    const ABCPERIOD_INVALID = YAPI::INVALID_UINT;
    const COMMAND_INVALID = YAPI::INVALID_STRING;
    //--- (end of YCarbonDioxide declaration)

    //--- (YCarbonDioxide attributes)
    protected int $_abcPeriod = self::ABCPERIOD_INVALID;      // UInt31
    protected string $_command = self::COMMAND_INVALID;        // Text

    //--- (end of YCarbonDioxide attributes)

    function __construct(string $str_func)
    {
        //--- (YCarbonDioxide constructor)
        parent::__construct($str_func);
        $this->_className = 'CarbonDioxide';

        //--- (end of YCarbonDioxide constructor)
    }

    //--- (YCarbonDioxide implementation)

    function _parseAttr(string $name, mixed $val): int
    {
        switch ($name) {
        case 'abcPeriod':
            $this->_abcPeriod = intval($val);
            return 1;
        case 'command':
            $this->_command = $val;
            return 1;
        }
        return parent::_parseAttr($name, $val);
    }

    /**
     * Returns the Automatic Baseline Calibration period, in hours. A negative value
     * means that automatic baseline calibration is disabled.
     *
     * @return int  an integer corresponding to the Automatic Baseline Calibration period, in hours
     *
     * On failure, throws an exception or returns YCarbonDioxide::ABCPERIOD_INVALID.
     * @throws YAPI_Exception on error
     */
    public function get_abcPeriod(): int
    {
        // $res                    is a int;
        if ($this->_cacheExpiration <= YAPI::GetTickCount()) {
            if ($this->load(YAPI::$_yapiContext->GetCacheValidity()) != YAPI::SUCCESS) {
                return self::ABCPERIOD_INVALID;
            }
        }
        $res = $this->_abcPeriod;
        return $res;
    }

    /**
     * Changes Automatic Baseline Calibration period, in hours. If you need
     * to disable automatic baseline calibration (for instance when using the
     * sensor in an environment that is constantly above 400 ppm CO2), set the
     * period to -1. For the Yocto-CO2-V2, the only possible values are 24 and -1.
     * Remember to call the saveToFlash() method of the
     * module if the modification must be kept.
     *
     * @param int $newval : an integer corresponding to Automatic Baseline Calibration period, in hours
     *
     * @return int  YAPI::SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     * @throws YAPI_Exception on error
     */
    public function set_abcPeriod(int $newval): int
    {
        $rest_val = strval($newval);
        return $this->_setAttr("abcPeriod", $rest_val);
    }

    /**
     * @throws YAPI_Exception on error
     */
    public function get_command(): string
    {
        // $res                    is a string;
        if ($this->_cacheExpiration <= YAPI::GetTickCount()) {
            if ($this->load(YAPI::$_yapiContext->GetCacheValidity()) != YAPI::SUCCESS) {
                return self::COMMAND_INVALID;
            }
        }
        $res = $this->_command;
        return $res;
    }

    /**
     * @throws YAPI_Exception
     */
    public function set_command(string $newval): int
    {
        $rest_val = $newval;
        return $this->_setAttr("command", $rest_val);
    }

    /**
     * Retrieves a CO2 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 CO2 sensor is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method isOnline() to test if the CO2 sensor is
     * indeed online at a given time. In case of ambiguity when looking for
     * a CO2 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 string $func : a string that uniquely characterizes the CO2 sensor, for instance
     *         YCO2MK02.carbonDioxide.
     *
     * @return YCarbonDioxide  a YCarbonDioxide object allowing you to drive the CO2 sensor.
     */
    public static function FindCarbonDioxide(string $func): YCarbonDioxide
    {
        // $obj                    is a YCarbonDioxide;
        $obj = YFunction::_FindFromCache('CarbonDioxide', $func);
        if ($obj == null) {
            $obj = new YCarbonDioxide($func);
            YFunction::_AddToCache('CarbonDioxide', $func, $obj);
        }
        return $obj;
    }

    /**
     * Triggers a forced calibration of the sensor at a given CO2 level, specified
     * between 400ppm and 2000ppm. Before invoking this command, the sensor must
     * have been maintained within the specified CO2 density during at least two
     * minutes.
     *
     * @param float $refVal : reference CO2 density for the calibration
     *
     * @return int  YAPI::SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     * @throws YAPI_Exception on error
     */
    public function triggerForcedCalibration(float $refVal): int
    {
        return $this->set_command(sprintf('F%dC', intval(round(1000*$refVal))));
    }

    /**
     * Triggers a baseline calibration at standard CO2 ambiant level (400ppm).
     * It is normally not necessary to manually calibrate the sensor, because
     * the built-in automatic baseline calibration procedure will automatically
     * fix any long-term drift based on the lowest level of CO2 observed over the
     * automatic calibration period. However, if automatic baseline calibration
     * is disabled, you may want to manually trigger a calibration from time to
     * time. Before starting a baseline calibration, make sure to put the sensor
     * in a standard environment (e.g. outside in fresh air) at around 400 ppm
     * for at least two minutes.
     *
     * @return int  YAPI::SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     * @throws YAPI_Exception on error
     */
    public function triggerBaselineCalibration(): int
    {
        return $this->set_command('BC');
    }

    /**
     * @throws YAPI_Exception on error
     */
    public function triggetBaselineCalibration(): int
    {
        return $this->triggerBaselineCalibration();
    }

    /**
     * Triggers a zero calibration of the sensor on carbon dioxide-free air -
     * for use with first generation Yocto-CO2 only.
     * It is normally not necessary to manually calibrate the sensor, because
     * the built-in automatic baseline calibration procedure will automatically
     * fix any long-term drift based on the lowest level of CO2 observed over the
     * automatic calibration period. However, if you disable automatic baseline
     * calibration, you may want to manually trigger a calibration from time to
     * time. Before starting a zero calibration, you should circulate carbon
     * dioxide-free air within the sensor for a minute or two, using a small pipe
     * connected to the sensor. Please contact support@yoctopuce.com for more details
     * on the zero calibration procedure.
     *
     * @return int  YAPI::SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     * @throws YAPI_Exception on error
     */
    public function triggerZeroCalibration(): int
    {
        return $this->set_command('ZC');
    }

    /**
     * @throws YAPI_Exception on error
     */
    public function triggetZeroCalibration(): int
    {
        return $this->triggerZeroCalibration();
    }

    /**
     * @throws YAPI_Exception
     */
    public function abcPeriod(): int
{
    return $this->get_abcPeriod();
}

    /**
     * @throws YAPI_Exception
     */
    public function setAbcPeriod(int $newval): int
{
    return $this->set_abcPeriod($newval);
}

    /**
     * @throws YAPI_Exception
     */
    public function command(): string
{
    return $this->get_command();
}

    /**
     * @throws YAPI_Exception
     */
    public function setCommand(string $newval): int
{
    return $this->set_command($newval);
}

    /**
     * Continues the enumeration of CO2 sensors started using yFirstCarbonDioxide().
     * Caution: You can't make any assumption about the returned CO2 sensors order.
     * If you want to find a specific a CO2 sensor, use CarbonDioxide.findCarbonDioxide()
     * and a hardwareID or a logical name.
     *
     * @return ?YCarbonDioxide  a pointer to a YCarbonDioxide object, corresponding to
     *         a CO2 sensor currently online, or a null pointer
     *         if there are no more CO2 sensors to enumerate.
     */
    public function nextCarbonDioxide(): ?YCarbonDioxide
    {
        $resolve = YAPI::resolveFunction($this->_className, $this->_func);
        if ($resolve->errorType != YAPI::SUCCESS) {
            return null;
        }
        $next_hwid = YAPI::getNextHardwareId($this->_className, $resolve->result);
        if ($next_hwid == null) {
            return null;
        }
        return self::FindCarbonDioxide($next_hwid);
    }

    /**
     * Starts the enumeration of CO2 sensors currently accessible.
     * Use the method YCarbonDioxide::nextCarbonDioxide() to iterate on
     * next CO2 sensors.
     *
     * @return ?YCarbonDioxide  a pointer to a YCarbonDioxide object, corresponding to
     *         the first CO2 sensor currently online, or a null pointer
     *         if there are none.
     */
    public static function FirstCarbonDioxide(): ?YCarbonDioxide
    {
        $next_hwid = YAPI::getFirstHardwareId('CarbonDioxide');
        if ($next_hwid == null) {
            return null;
        }
        return self::FindCarbonDioxide($next_hwid);
    }

    //--- (end of YCarbonDioxide implementation)

}
