# Source code for scrapy.http.request.json_request

    """
    This module implements the JsonRequest class which is a more convenient class
    (than Request) to generate JSON Requests.

    See documentation in docs/topics/request-response.rst
    """

    from __future__ import annotations

    import copy
    import json
    import warnings
    from typing import TYPE_CHECKING, Any, overload

    from scrapy.http.request import Request, RequestTypeVar

    if TYPE_CHECKING:
        # typing.Self requires Python 3.11
        from typing_extensions import Self

    class JsonRequest(Request):
        attributes: tuple[str, ...] = Request.attributes + ("dumps_kwargs",)

        def __init__(
            self, *args: Any, dumps_kwargs: dict[str, Any] | None = None, **kwargs: Any
        ) -> None:
            dumps_kwargs = copy.deepcopy(dumps_kwargs) if dumps_kwargs is not None else {}
            dumps_kwargs.setdefault("sort_keys", True)
            self._dumps_kwargs: dict[str, Any] = dumps_kwargs

            body_passed = kwargs.get("body", None) is not None
            data: Any = kwargs.pop("data", None)
            data_passed: bool = data is not None

            if body_passed and data_passed:
                warnings.warn("Both body and data passed. data will be ignored")
            elif not body_passed and data_passed:
                kwargs["body"] = self._dumps(data)
                if "method" not in kwargs:
                    kwargs["method"] = "POST"

            super().__init__(*args, **kwargs)
            self.headers.setdefault("Content-Type", "application/json")
            self.headers.setdefault(
                "Accept", "application/json, text/javascript, */*; q=0.01"
            )

        @property
        def dumps_kwargs(self) -> dict[str, Any]:
            return self._dumps_kwargs

        @overload
        def replace(
            self, *args: Any, cls: type[RequestTypeVar], **kwargs: Any
        ) -> RequestTypeVar: ...

        @overload
        def replace(self, *args: Any, cls: None = None, **kwargs: Any) -> Self: ...

        def replace(
            self, *args: Any, cls: type[Request] | None = None, **kwargs: Any
        ) -> Request:
            body_passed = kwargs.get("body", None) is not None
            data: Any = kwargs.pop("data", None)
            data_passed: bool = data is not None

            if body_passed and data_passed:
                warnings.warn("Both body and data passed. data will be ignored")
            elif not body_passed and data_passed:
                kwargs["body"] = self._dumps(data)

            return super().replace(*args, cls=cls, **kwargs)

        def _dumps(self, data: Any) -> str:
            """Convert to JSON"""
            return json.dumps(data, **self._dumps_kwargs)