"""
Encapsulates text in <del> html tag, which usually displayed as strikethrough text.

Usage:
~~my text~~
"""
from marko import inline
from marko.helpers import MarkoExtension


class StrikeThroughElement(inline.InlineElement):
    pattern = '~~(.+)~~'
    parse_children = True


class StrikeThroughRenderer:
    def render_strike_through_element(self, element):
        return f"<del>{self.render_children(element)}</del>"


StrikeThrough = MarkoExtension(
    elements=[StrikeThroughElement],
    renderer_mixins=[StrikeThroughRenderer]
)