from __future__ import unicode_literals

import re

from django.utils.translation import gettext as _


HEADER_RE = re.compile(r'''
<div class="quote-heading">(?P<title>.*?)</div>
'''.strip(), re.IGNORECASE | re.MULTILINE | re.DOTALL);


def finalise_markup(post):
    return HEADER_RE.sub(replace_headers, post)


def replace_headers(matchobj):
    title = matchobj.group('title')
    if title:
        quote_title = _("%(title)s has written:") % {'title': title}
    else:
        quote_title = _("Quoted message:")
    return '<div class="quote-heading">{}</div>'.format(quote_title)