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

Exposes attributes for a single Prim on the USD stage as inputs to this node. When this node computes it writes any of these
connected inputs to the target Prim. Any inputs which are not connected will not be written.
"""

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

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.execIn
            inputs.prim
            inputs.usdWriteBack
        Outputs:
            outputs.execOut
    """

    # 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:execIn', 'execution', 0, None, 'The input execution port', {}, True, None, False, ''),
        ('inputs:prim', 'target', 0, 'Prim', 'The prim to be written to', {}, True, [], False, ''),
        ('inputs:usdWriteBack', 'bool', 0, 'Persist To USD', 'Whether or not the value should be written back to USD, or kept a Fabric only value', {ogn.MetadataKeys.DEFAULT: 'true'}, True, True, False, ''),
        ('outputs:execOut', 'execution', 0, None, 'The output execution port', {}, 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.execIn = og.AttributeRole.EXECUTION
        role_data.inputs.prim = og.AttributeRole.TARGET
        role_data.outputs.execOut = 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 execIn(self):
            data_view = og.AttributeValueHelper(self._attributes.execIn)
            return data_view.get()

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

        @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()

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

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

        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 execOut(self):
            data_view = og.AttributeValueHelper(self._attributes.execOut)
            return data_view.get()

        @execOut.setter
        def execOut(self, value):
            data_view = og.AttributeValueHelper(self._attributes.execOut)
            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 = OgnWritePrimDatabase.ValuesForInputs(node, self.attributes.inputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_OUTPUT)
        self.outputs = OgnWritePrimDatabase.ValuesForOutputs(node, self.attributes.outputs, dynamic_attributes)
        dynamic_attributes = self.dynamic_attribute_data(node, og.AttributePortType.ATTRIBUTE_PORT_TYPE_STATE)
        self.state = OgnWritePrimDatabase.ValuesForState(node, self.attributes.state, dynamic_attributes)
