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

Given a path to a prim on the current USD stage and the name of an attribute on  that prim, gets the value of that attribute,
at the global timeline value.
"""

from typing import Any
import carb
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 OgnReadPrimAttributeDatabase(og.Database):
    """Helper class providing simplified access to data on nodes of type omni.graph.nodes.ReadPrimAttribute

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.name
            inputs.prim
            inputs.primPath
            inputs.usdTimecode
            inputs.usePath
        Outputs:
            outputs.value
        State:
            state.correctlySetup
            state.importPath
            state.srcAttrib
            state.srcPath
            state.srcPathAsToken
            state.time
    """

    # 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, 'Attribute Name', 'The name of the attribute to get on the specified prim', {}, True, "", False, ''),
        ('inputs:prim', 'target', 0, None, "The prim to be read from when 'usePath' is false", {}, False, [], False, ''),
        ('inputs:primPath', 'token', 0, None, "The path of the prim to be modified when 'usePath' is true", {}, False, None, True, 'Use prim input with a GetPrimsAtPath node instead'),
        ('inputs:usdTimecode', 'timecode', 0, 'Time', 'The time at which to evaluate the transform of the USD prim attribute. A value of "NaN" indicates that the default USD time stamp should be used', {ogn.MetadataKeys.DEFAULT: '"NaN"'}, True, float("NaN"), False, ''),
        ('inputs:usePath', 'bool', 0, None, "When true, the 'primPath' attribute is used as the path to the prim being read, otherwise it will read the connection at the 'prim' attribute", {ogn.MetadataKeys.DEFAULT: 'false'}, True, False, True, 'Use prim input with a GetPrimsAtPath node instead'),
        ('outputs:value', 'any', 2, None, 'The attribute value', {}, True, None, False, ''),
        ('state:correctlySetup', 'bool', 0, None, 'Wheter or not the instance is properly setup', {ogn.MetadataKeys.DEFAULT: 'false'}, True, False, False, ''),
        ('state:importPath', 'uint64', 0, None, 'Path at which data has been imported', {}, True, None, False, ''),
        ('state:srcAttrib', 'uint64', 0, None, 'A TokenC to the source attribute', {}, True, None, False, ''),
        ('state:srcPath', 'uint64', 0, None, 'A PathC to the source prim', {}, True, None, False, ''),
        ('state:srcPathAsToken', 'uint64', 0, None, 'A TokenC to the source prim', {}, True, None, False, ''),
        ('state:time', 'double', 0, None, 'The timecode at which we have imported the 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.prim = og.AttributeRole.TARGET
        role_data.inputs.usdTimecode = og.AttributeRole.TIMECODE
        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 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 primPath(self):
            data_view = og.AttributeValueHelper(self._attributes.primPath)
            return data_view.get()

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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