bracket_citation_style.py

from dataclasses import dataclass, field
import sphinxcontrib.bibtex.plugin

from sphinxcontrib.bibtex.style.referencing import BracketStyle
from sphinxcontrib.bibtex.style.referencing.author_year import AuthorYearReferenceStyle


def bracket_style() -> BracketStyle:
    return BracketStyle(
        left='(',
        right=')',
    )


@dataclass
class MyReferenceStyle(AuthorYearReferenceStyle):
    bracket_parenthetical: BracketStyle = field(default_factory=bracket_style)
    bracket_textual: BracketStyle = field(default_factory=bracket_style)
    bracket_author: BracketStyle = field(default_factory=bracket_style)
    bracket_label: BracketStyle = field(default_factory=bracket_style)
    bracket_year: BracketStyle = field(default_factory=bracket_style)


def setup(app):
    sphinxcontrib.bibtex.plugin.register_plugin(
        'sphinxcontrib.bibtex.style.referencing',
        'author_year_round', MyReferenceStyle)