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

Takes an input array of index values in 'sourceStartsInTarget' encoded as the list of  index values at which the output array
value will be incremented, starting at the second  entry, and with the last entry into the array being the desired sized
of the output array  'sourceIndices'. For example the input [1,2,3,5,6,6] would generate an output array of  size 5 (last
index) consisting of the values [0,0,2,3,3,3]:
     - the first two 0s to fill the output array up to index input[1]=2
 
   - the first two 0s to fill the output array up to index input[1]=2
     - the 2 to fill the output array up to index input[2]=3

    - the three 3s to fill the output array up to index input[3]=6
"""

import numpy

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



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

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.sourceStartsInTarget
        Outputs:
            outputs.sourceIndices
    """

    # 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:sourceStartsInTarget', 'int[]', 0, None, 'List of index values encoding the increments for the output array values', {ogn.MetadataKeys.DEFAULT: '[]'}, True, [], False, ''),
        ('outputs:sourceIndices', 'int[]', 0, None, 'Decoded list of index values as described by the node algorithm', {ogn.MetadataKeys.DEFAULT: '[]'}, True, [], False, ''),
    ])

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

        @sourceStartsInTarget.setter
        def sourceStartsInTarget(self, value):
            if self._setting_locked:
                raise og.ReadOnlyError(self._attributes.sourceStartsInTarget)
            data_view = og.AttributeValueHelper(self._attributes.sourceStartsInTarget)
            data_view.set(value)
            self.sourceStartsInTarget_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.sourceIndices_size = 0
            self._batchedWriteValues = { }

        @property
        def sourceIndices(self):
            data_view = og.AttributeValueHelper(self._attributes.sourceIndices)
            return data_view.get(reserved_element_count=self.sourceIndices_size)

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

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