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from adi import ad4130
from adi.attribute import attribute
from decimal import Decimal

# Create a child class of ad4130 parent class for defining extended iio attributes (the ones which
# are not part of original linux iio drivers and created for non-linux iio applications)
class ad4130_xattr(ad4130):

    # List of extended iio channels
    xchannel = []

    def __init__(self, uri, device_name):
        super().__init__(uri, device_name)

        # Create an instances of the extended channel class
        for ch in self._ctrl.channels:
            name = ch._id
            self._rx_channel_names.append(name)
            self.xchannel.append(self._xchannel(self._ctrl, name))

        # Add the _xchannel class methods as _channel methods, so that they can be accessed with 
        # attribute name as 'channel' instead 'xchannel'
        # e.g. channel attribute 'system_calibration' can be accessed as either "obj.channel[chn_num].system_calibration" Or
        # "obj.xchannel[chn_num].system_calibration", where obj refers to object of 'ad4130_xattr' class
        self._channel.system_calibration = self._xchannel.system_calibration
        self._channel.internal_calibration = self._xchannel.internal_calibration
        self._channel.loadcell_offset_calibration = self._xchannel.loadcell_offset_calibration
        self._channel.loadcell_gain_calibration = self._xchannel.loadcell_gain_calibration

    #------------------------------------------------
    # Device extended attributes
    #------------------------------------------------
    
    @property
    def demo_config(self):
        """AD4130 demo mode config"""
        return self._get_iio_dev_attr_str("demo_config")

    @property
    def sample_rate(self):
        """AD4130 device sample_rate"""
        return int(self._get_iio_dev_attr_str("sampling_frequency"))

    #------------------------------------------------
    # Channel extended attributes
    #------------------------------------------------

    class _xchannel(attribute):

        def __init__(self, ctrl, channel_name):
            self.name = channel_name
            self._ctrl = ctrl

        @property
        def system_calibration(self):
            """AD4130 channel system calibration"""
            return self._get_iio_attr_str(self.name, "system_calibration", False)

        @system_calibration.setter
        def system_calibration(self, value):
            self._set_iio_attr(self.name, "system_calibration", False, value)

        @property
        def internal_calibration(self):
            """AD4130 channel internal calibration"""
            return self._get_iio_attr_str(self.name, "internal_calibration", False)

        @internal_calibration.setter
        def internal_calibration(self, value):
            self._set_iio_attr(self.name, "internal_calibration", False, value)

        @property
        def loadcell_offset_calibration(self):
            """AD4130 loadcell offset calibration"""
            return self._get_iio_attr_str(self.name, "loadcell_offset_calibration", False)

        @loadcell_offset_calibration.setter
        def loadcell_offset_calibration(self, value):
            self._set_iio_attr(self.name, "loadcell_offset_calibration", False, value)

        @property
        def loadcell_gain_calibration(self):
            """AD4130 loadcell gain calibration"""
            return self._get_iio_attr_str(self.name, "loadcell_gain_calibration", False)

        @loadcell_gain_calibration.setter
        def loadcell_gain_calibration(self, value):
            self._set_iio_attr(self.name, "loadcell_gain_calibration", False, value)