from __future__ import annotations


from docutils import nodes


from sphinx.application import Sphinx

from sphinx.util.docutils import SphinxDirective, SphinxRole

from sphinx.util.typing import ExtensionMetadata

class HelloDirective(SphinxDirective):
    """A directive to say hello!"""

    required_arguments = 1


    def run(self) -> list[nodes.Node]:
        paragraph_node = nodes.paragraph(text=f'hello {self.arguments[0]}!')
        return [paragraph_node]


def setup(app: Sphinx) -> ExtensionMetadata:

    app.add_directive('hello', HelloDirective)

    return {
        'version': '0.1',
        'parallel_read_safe': True,
        'parallel_write_safe': True,
    }