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# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
# For details: https://github.com/PyCQA/astroid/blob/main/LICENSE
# Copyright (c) https://github.com/PyCQA/astroid/blob/main/CONTRIBUTORS.txt

"""Astroid hooks for understanding ``boto3.ServiceRequest()``."""

from astroid import extract_node
from astroid.manager import AstroidManager
from astroid.nodes.scoped_nodes import ClassDef

BOTO_SERVICE_FACTORY_QUALIFIED_NAME = "boto3.resources.base.ServiceResource"


def service_request_transform(node):
    """Transform ServiceResource to look like dynamic classes."""
    code = """
    def __getattr__(self, attr):
        return 0
    """
    func_getattr = extract_node(code)
    node.locals["__getattr__"] = [func_getattr]
    return node


def _looks_like_boto3_service_request(node) -> bool:
    return node.qname() == BOTO_SERVICE_FACTORY_QUALIFIED_NAME


AstroidManager().register_transform(
    ClassDef, service_request_transform, _looks_like_boto3_service_request
)