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from __future__ import annotations

from virtualenv.activation.via_template import ViaTemplateActivator


class NushellActivator(ViaTemplateActivator):
    def templates(self):
        yield "activate.nu"

    @staticmethod
    def quote(string):
        """
        Nushell supports raw strings like: r###'this is a string'###.

        This method finds the maximum continuous sharps in the string and then
        quote it with an extra sharp.
        """
        max_sharps = 0
        current_sharps = 0
        for char in string:
            if char == "#":
                current_sharps += 1
                max_sharps = max(current_sharps, max_sharps)
            else:
                current_sharps = 0
        wrapping = "#" * (max_sharps + 1)
        return f"r{wrapping}'{string}'{wrapping}"

    def replacements(self, creator, dest_folder):  # noqa: ARG002
        return {
            "__VIRTUAL_PROMPT__": "" if self.flag_prompt is None else self.flag_prompt,
            "__VIRTUAL_ENV__": str(creator.dest),
            "__VIRTUAL_NAME__": creator.env_name,
            "__BIN_NAME__": str(creator.bin_dir.relative_to(creator.dest)),
        }


__all__ = [
    "NushellActivator",
]