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

This is a tutorial node. It exercises functionality for accessing data in bundles that are on the GPU as well as bundles
whose CPU/GPU location is decided at runtime. The compute looks for bundled attributes named 'points' and, if they are found,
computes the dot products. If the bundle on the output contains an integer array type named 'dotProducts' then the results
are placed there, otherwise a new attribute of that name and type is created on the output bundle to hold the results. This
node is identical to OgnTutorialCpuGpuBundles.ogn, except is is implemented in Python.
"""

import carb
import sys
import traceback

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



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

    Class Members:
        node: Node being evaluated

    Attribute Value Properties:
        Inputs:
            inputs.cpuBundle
            inputs.gpu
            inputs.gpuBundle
        Outputs:
            outputs.cpuGpuBundle

    Predefined Tokens:
        tokens.points
        tokens.dotProducts
    """

    # 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:cpuBundle', 'bundle', 0, 'CPU Input Bundle', 'Input bundle whose data always lives on the CPU', {}, True, None, False, ''),
        ('inputs:gpu', 'bool', 0, 'Results To GPU', 'If true then copy gpuBundle onto the output, otherwise copy cpuBundle', {}, True, False, False, ''),
        ('inputs:gpuBundle', 'bundle', 0, 'GPU Input Bundle', 'Input bundle whose data always lives on the GPU', {ogn.MetadataKeys.MEMORY_TYPE: 'cuda'}, True, None, False, ''),
        ('outputs:cpuGpuBundle', 'bundle', 0, 'Constructed Bundle', "This is the bundle with the merged data. If the 'gpu' attribute is set to true then this\nbundle's contents will be entirely on the GPU, otherwise it will be on the CPU.", {ogn.MetadataKeys.MEMORY_TYPE: 'any'}, True, None, False, ''),
    ])

    class tokens:
        points = "points"
        dotProducts = "dotProducts"

    @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.cpuBundle = og.AttributeRole.BUNDLE
        role_data.inputs.gpuBundle = og.AttributeRole.BUNDLE
        role_data.outputs.cpuGpuBundle = og.AttributeRole.BUNDLE
        return role_data

    class ValuesForInputs(og.DynamicAttributeAccess):
        LOCAL_PROPERTY_NAMES = {"gpu", "_setting_locked", "_batchedReadAttributes", "_batchedReadValues"}
        """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.__bundles = og.BundleContainer(context, node, attributes, ['inputs:gpuBundle'], read_only=True, gpu_ptr_kinds={})
            self._batchedReadAttributes = [self._attributes.gpu]
            self._batchedReadValues = [False]

        @property
        def cpuBundle(self) -> og.BundleContents:
            """Get the bundle wrapper class for the attribute inputs.cpuBundle"""
            return self.__bundles.cpuBundle

        @property
        def gpuBundle(self) -> og.BundleContents:
            """Get the bundle wrapper class for the attribute inputs.gpuBundle"""
            return self.__bundles.gpuBundle

        @property
        def gpu(self):
            return self._batchedReadValues[0]

        @gpu.setter
        def gpu(self, value):
            self._batchedReadValues[0] = value

        def __getattr__(self, item: str):
            if item in self.LOCAL_PROPERTY_NAMES:
                return object.__getattribute__(self, item)
            else:
                return super().__getattr__(item)

        def __setattr__(self, item: str, new_value):
            if item in self.LOCAL_PROPERTY_NAMES:
                object.__setattr__(self, item, new_value)
            else:
                super().__setattr__(item, new_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.__bundles = og.BundleContainer(context, node, attributes, ['outputs_cpuGpuBundle'], read_only=False, gpu_ptr_kinds={})
            self._batchedWriteValues = { }

        @property
        def cpuGpuBundle(self) -> og.BundleContents:
            """Get the bundle wrapper class for the attribute outputs.cpuGpuBundle"""
            return self.__bundles.cpuGpuBundle

        @cpuGpuBundle.setter
        def cpuGpuBundle(self, bundle: og.BundleContents):
            """Overwrite the bundle attribute outputs.cpuGpuBundle with a new bundle"""
            if not isinstance(bundle, og.BundleContents):
                carb.log_error("Only bundle attributes can be assigned to another bundle attribute")
            self.__bundles.cpuGpuBundle.bundle = bundle

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

    class abi:
        """Class defining the ABI interface for the node type"""

        @staticmethod
        def get_node_type():
            get_node_type_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'get_node_type', None)
            if callable(get_node_type_function):
                return get_node_type_function()
            return 'omni.graph.tutorials.CpuGpuBundlesPy'

        @staticmethod
        def compute(context, node):
            def database_valid():
                if not db.inputs.cpuBundle.valid:
                    db.log_warning('Required bundle inputs.cpuBundle is invalid or not connected, compute skipped')
                    return False
                if not db.inputs.gpuBundle.valid:
                    db.log_warning('Required bundle inputs.gpuBundle is invalid or not connected, compute skipped')
                    return False
                if not db.outputs.cpuGpuBundle.valid:
                    db.log_error('Required bundle outputs.cpuGpuBundle is invalid, compute skipped')
                    return False
                return True
            try:
                per_node_data = OgnTutorialCpuGpuBundlesPyDatabase.PER_NODE_DATA[node.node_id()]
                db = per_node_data.get('_db')
                if db is None:
                    db = OgnTutorialCpuGpuBundlesPyDatabase(node)
                    per_node_data['_db'] = db
                if not database_valid():
                    per_node_data['_db'] = None
                    return False
            except:
                db = OgnTutorialCpuGpuBundlesPyDatabase(node)

            try:
                compute_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'compute', None)
                if callable(compute_function) and compute_function.__code__.co_argcount > 1:
                    return compute_function(context, node)

                db.inputs._prefetch()
                db.inputs._setting_locked = True
                with og.in_compute():
                    return OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS.compute(db)
            except Exception as error:
                stack_trace = "".join(traceback.format_tb(sys.exc_info()[2].tb_next))
                db.log_error(f'Assertion raised in compute - {error}\n{stack_trace}', add_context=False)
            finally:
                db.inputs._setting_locked = False
                db.outputs._commit()
            return False

        @staticmethod
        def initialize(context, node):
            OgnTutorialCpuGpuBundlesPyDatabase._initialize_per_node_data(node)
            initialize_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'initialize', None)
            if callable(initialize_function):
                initialize_function(context, node)

            per_node_data = OgnTutorialCpuGpuBundlesPyDatabase.PER_NODE_DATA[node.node_id()]
            def on_connection_or_disconnection(*args):
                per_node_data['_db'] = None

            node.register_on_connected_callback(on_connection_or_disconnection)
            node.register_on_disconnected_callback(on_connection_or_disconnection)

        @staticmethod
        def release(node):
            release_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'release', None)
            if callable(release_function):
                release_function(node)
            OgnTutorialCpuGpuBundlesPyDatabase._release_per_node_data(node)

        @staticmethod
        def release_instance(node, target):
            OgnTutorialCpuGpuBundlesPyDatabase._release_per_node_instance_data(node, target)

        @staticmethod
        def update_node_version(context, node, old_version, new_version):
            update_node_version_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'update_node_version', None)
            if callable(update_node_version_function):
                return update_node_version_function(context, node, old_version, new_version)
            return False

        @staticmethod
        def initialize_type(node_type):
            initialize_type_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'initialize_type', None)
            needs_initializing = True
            if callable(initialize_type_function):
                needs_initializing = initialize_type_function(node_type)
            if needs_initializing:
                node_type.set_metadata(ogn.MetadataKeys.EXTENSION, "omni.graph.tutorials")
                node_type.set_metadata(ogn.MetadataKeys.TAGS, "tutorial,bundle,gpu")
                node_type.set_metadata(ogn.MetadataKeys.UI_NAME, "Tutorial Python Node: CPU/GPU Bundles")
                node_type.set_metadata(ogn.MetadataKeys.TOKENS, "[\"points\", \"dotProducts\"]")
                node_type.set_metadata(ogn.MetadataKeys.CATEGORIES, "tutorials")
                node_type.set_metadata(ogn.MetadataKeys.DESCRIPTION, "This is a tutorial node. It exercises functionality for accessing data in bundles that are on the GPU as well as bundles whose CPU/GPU location is decided at runtime. The compute looks for bundled attributes named 'points' and, if they are found, computes the dot products. If the bundle on the output contains an integer array type named 'dotProducts' then the results are placed there, otherwise a new attribute of that name and type is created on the output bundle to hold the results. This node is identical to OgnTutorialCpuGpuBundles.ogn, except is is implemented in Python.")
                node_type.set_metadata(ogn.MetadataKeys.LANGUAGE, "Python")
                icon_path = carb.tokens.get_tokens_interface().resolve("${omni.graph.tutorials}")
                icon_path = icon_path + '/' + "ogn/icons/omni.graph.tutorials.CpuGpuBundlesPy.svg"
                node_type.set_metadata(ogn.MetadataKeys.ICON_PATH, icon_path)
                OgnTutorialCpuGpuBundlesPyDatabase.INTERFACE.add_to_node_type(node_type)

        @staticmethod
        def on_connection_type_resolve(node):
            on_connection_type_resolve_function = getattr(OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS, 'on_connection_type_resolve', None)
            if callable(on_connection_type_resolve_function):
                on_connection_type_resolve_function(node)

    NODE_TYPE_CLASS = None

    @staticmethod
    def register(node_type_class):
        OgnTutorialCpuGpuBundlesPyDatabase.NODE_TYPE_CLASS = node_type_class
        og.register_node_type(OgnTutorialCpuGpuBundlesPyDatabase.abi, 1)

    @staticmethod
    def deregister():
        og.deregister_node_type("omni.graph.tutorials.CpuGpuBundlesPy")
