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

Imports a data value from the Fabric cache that is located at the given path and attribute name. This is for data that is
not already present in OmniGraph as that data can be accessed through a direct connection to the underlying OmniGraph node.
"""

from typing import Any

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



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

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.name
            inputs.path
        Outputs:
            outputs.value
    """

    # 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, None, 'The name of the attribute to be queried', {}, True, "", False, ''),
        ('inputs:path', 'path', 0, None, 'The path to the Fabric data bucket in which the attribute being queried lives.', {}, True, "", False, ''),
        ('outputs:value', 'any', 2, None, 'The attribute value', {}, 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
        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 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()

        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 value(self) -> og.RuntimeAttribute:
            """Get the runtime wrapper class for the attribute outputs.value"""
            return og.RuntimeAttribute(self._attributes.value.get_attribute_data(), self._context, False)

        @value.setter
        def value(self, value_to_set: Any):
            """Assign another attribute's value to outputs.value"""
            if isinstance(value_to_set, og.RuntimeAttribute):
                self.value.value = value_to_set.value
            else:
                self.value.value = value_to_set

        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 = OgnReadOmniGraphValueDatabase.ValuesForInputs(node, self.attributes.inputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_OUTPUT)
        self.outputs = OgnReadOmniGraphValueDatabase.ValuesForOutputs(node, self.attributes.outputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_STATE)
        self.state = OgnReadOmniGraphValueDatabase.ValuesForState(node, self.attributes.state, dynamic_attributes)
