"""Support for simplified access to data on nodes of type omni.graph.action.OnObjectChange

Executes an output execution pulse when the watched USD Object changes
"""

import usdrt

import omni.graph.core as og
import omni.graph.core._omni_graph_core as _og
import omni.graph.tools.ogn as ogn



class OgnOnObjectChangeDatabase(og.Database):
    """Helper class providing simplified access to data on nodes of type omni.graph.action.OnObjectChange

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.name
            inputs.onlyPlayback
            inputs.path
            inputs.prim
        Outputs:
            outputs.changed
            outputs.propertyName
    """

    # Imprint the generator and target ABI versions in the file for JIT generation
    GENERATOR_VERSION = (1, 41, 3)
    TARGET_VERSION = (2, 139, 12)

    # This is an internal object that provides per-class storage of a per-node data dictionary
    PER_NODE_DATA = {}

    # This is an internal object that describes unchanging attributes in a generic way
    # The values in this list are in no particular order, as a per-attribute tuple
    #     Name, Type, ExtendedTypeIndex, UiName, Description, Metadata,
    #     Is_Required, DefaultValue, Is_Deprecated, DeprecationMsg
    # You should not need to access any of this data directly, use the defined database interfaces
    INTERFACE = og.Database._get_interface([
        ('inputs:name', 'token', 0, 'Property Name', 'The name of the property to watch if prim input is set', {ogn.MetadataKeys.LITERAL_ONLY: '1'}, False, None, False, ''),
        ('inputs:onlyPlayback', 'bool', 0, 'Only Simulate On Play', 'When true, the node is only computed while Stage is being played.', {ogn.MetadataKeys.LITERAL_ONLY: '1', ogn.MetadataKeys.DEFAULT: 'true'}, True, True, False, ''),
        ('inputs:path', 'path', 0, 'Path', 'The path of object of interest (property or prim). If the prim input has a target, this is ignored', {ogn.MetadataKeys.LITERAL_ONLY: '1'}, False, None, True, 'Use prim input instead'),
        ('inputs:prim', 'target', 0, 'Prim', 'The prim of interest. If this has a target, the path input will be ignored', {ogn.MetadataKeys.LITERAL_ONLY: '1'}, False, [], False, ''),
        ('outputs:changed', 'execution', 0, 'Changed', 'The execution output', {}, True, None, False, ''),
        ('outputs:propertyName', 'token', 0, 'Property Name', 'The name of the property that changed', {}, True, None, False, ''),
    ])

    @classmethod
    def _populate_role_data(cls):
        """Populate a role structure with the non-default roles on this node type"""
        role_data = super()._populate_role_data()
        role_data.inputs.path = og.AttributeRole.PATH
        role_data.inputs.prim = og.AttributeRole.TARGET
        role_data.outputs.changed = og.AttributeRole.EXECUTION
        return role_data

    class ValuesForInputs(og.DynamicAttributeAccess):
        LOCAL_PROPERTY_NAMES = { }
        """Helper class that creates natural hierarchical access to input attributes"""
        def __init__(self, node: og.Node, attributes, dynamic_attributes: og.DynamicAttributeInterface):
            """Initialize simplified access for the attribute data"""
            context = node.get_graph().get_default_graph_context()
            super().__init__(context, node, attributes, dynamic_attributes)
            self._batchedReadAttributes = []
            self._batchedReadValues = []

        @property
        def name(self):
            data_view = og.AttributeValueHelper(self._attributes.name)
            return data_view.get()

        @name.setter
        def name(self, value):
            if self._setting_locked:
                raise og.ReadOnlyError(self._attributes.name)
            data_view = og.AttributeValueHelper(self._attributes.name)
            data_view.set(value)

        @property
        def onlyPlayback(self):
            data_view = og.AttributeValueHelper(self._attributes.onlyPlayback)
            return data_view.get()

        @onlyPlayback.setter
        def onlyPlayback(self, value):
            if self._setting_locked:
                raise og.ReadOnlyError(self._attributes.onlyPlayback)
            data_view = og.AttributeValueHelper(self._attributes.onlyPlayback)
            data_view.set(value)

        @property
        def path(self):
            data_view = og.AttributeValueHelper(self._attributes.path)
            return data_view.get()

        @path.setter
        def path(self, value):
            if self._setting_locked:
                raise og.ReadOnlyError(self._attributes.path)
            data_view = og.AttributeValueHelper(self._attributes.path)
            data_view.set(value)
            self.path_size = data_view.get_array_size()

        @property
        def prim(self):
            data_view = og.AttributeValueHelper(self._attributes.prim)
            return data_view.get()

        @prim.setter
        def prim(self, value):
            if self._setting_locked:
                raise og.ReadOnlyError(self._attributes.prim)
            data_view = og.AttributeValueHelper(self._attributes.prim)
            data_view.set(value)
            self.prim_size = data_view.get_array_size()

        def _prefetch(self):
            readAttributes = self._batchedReadAttributes
            newValues = _og._prefetch_input_attributes_data(readAttributes)
            if len(readAttributes) == len(newValues):
                self._batchedReadValues = newValues

    class ValuesForOutputs(og.DynamicAttributeAccess):
        LOCAL_PROPERTY_NAMES = { }
        """Helper class that creates natural hierarchical access to output attributes"""
        def __init__(self, node: og.Node, attributes, dynamic_attributes: og.DynamicAttributeInterface):
            """Initialize simplified access for the attribute data"""
            context = node.get_graph().get_default_graph_context()
            super().__init__(context, node, attributes, dynamic_attributes)
            self._batchedWriteValues = { }

        @property
        def changed(self):
            data_view = og.AttributeValueHelper(self._attributes.changed)
            return data_view.get()

        @changed.setter
        def changed(self, value):
            data_view = og.AttributeValueHelper(self._attributes.changed)
            data_view.set(value)

        @property
        def propertyName(self):
            data_view = og.AttributeValueHelper(self._attributes.propertyName)
            return data_view.get()

        @propertyName.setter
        def propertyName(self, value):
            data_view = og.AttributeValueHelper(self._attributes.propertyName)
            data_view.set(value)

        def _commit(self):
            _og._commit_output_attributes_data(self._batchedWriteValues)
            self._batchedWriteValues = { }

    class ValuesForState(og.DynamicAttributeAccess):
        """Helper class that creates natural hierarchical access to state attributes"""
        def __init__(self, node: og.Node, attributes, dynamic_attributes: og.DynamicAttributeInterface):
            """Initialize simplified access for the attribute data"""
            context = node.get_graph().get_default_graph_context()
            super().__init__(context, node, attributes, dynamic_attributes)

    def __init__(self, node):
        super().__init__(node)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_INPUT)
        self.inputs = OgnOnObjectChangeDatabase.ValuesForInputs(node, self.attributes.inputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_OUTPUT)
        self.outputs = OgnOnObjectChangeDatabase.ValuesForOutputs(node, self.attributes.outputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_STATE)
        self.state = OgnOnObjectChangeDatabase.ValuesForState(node, self.attributes.state, dynamic_attributes)
