bl_info = {
    "name": "min_customnodes_addon",
    "description": "Test addon to debug Blender 3.5 crash",
    "author": "Bobbe",
    "version": (0, 1, 0),
    "blender": (3, 5, 0),
    "location": "File > Import",
    "category": "Import-Export",
    "support": "COMMUNITY",
}

import bpy
from bpy.types import ShaderNodeCustomGroup

import nodeitems_utils
from nodeitems_utils import NodeItem
from nodeitems_builtins import ShaderNodeCategory

class ShaderNodeTest(ShaderNodeCustomGroup):
    bl_label = "TestNode"

    def init(self, context):
        name = f"CUSTOM_NODE_{self.__class__.__name__}"
        node_tree = bpy.data.node_groups.new(name, "ShaderNodeTree")
        nodes = node_tree.nodes
        links = node_tree.links

        node_input = nodes.new("NodeGroupInput")
        node_tree.inputs.new("NodeSocketFloatFactor", "Float LOL")

        self.node_tree = node_tree

    def copy(self, node):
        self.node_tree = node.node_tree.copy()

    def free(self):
        if self.node_tree.users < 1:
            bpy.data.node_groups.remove(self.node_tree)

    def draw_buttons(self, context, layout):
        layout.label(text="This is a test node")

def register_node_category(identifier, category):
    def draw_node_item(self, context):
        layout = self.layout
        col = layout.column(align=True)
        for item in self.category.items(context):
            item.draw(item, col, context)

    menu_type = type("NODE_MT_category_" + category.identifier, (bpy.types.Menu,), {
        "bl_space_type": "NODE_EDITOR",
        "bl_label": category.name,
        "category": category,
        "poll": category.poll,
        "draw": draw_node_item,
    })

    bpy.utils.register_class(menu_type)

    nodeitems_utils._node_categories[identifier][0].append(category)
    nodeitems_utils._node_categories[identifier][2].append(menu_type)

def unregister_node_category(identifier, category):
    categories = nodeitems_utils._node_categories[identifier][0]
    menu_types = nodeitems_utils._node_categories[identifier][2]

    menu_type = menu_types[categories.index(category)]
    bpy.utils.unregister_class(menu_type)

    categories.remove(category)
    menu_types.remove(menu_type)

classes = (ShaderNodeTest,)

shader_node_category = ShaderNodeCategory("SH_NEW_TEST", "Test", items=(
    NodeItem("ShaderNodeTest"),
))

def register():
    for cls in classes:
        bpy.utils.register_class(cls)
    register_node_category("SHADER", shader_node_category)

def unregister():
    unregister_node_category("SHADER", shader_node_category)
    for cls in classes:
        bpy.utils.unregister_class(cls)