#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import os
import sys
from typing import Any

import lxml.etree


ns = {"fb": "http://www.gribuser.ru/xml/fictionbook/2.0"}


def add_em_for_annotation(annotation: Any) -> None:
    for p in annotation.xpath(".//fb:p", namespaces=ns):
        em = lxml.etree.Element("{http://www.gribuser.ru/xml/fictionbook/2.0}emphasis")
        em.text = p.text
        p.text = ''
        for x in p.getchildren():
            em.append(x)
        p.append(em)


def fix_fb2_file(path: str) -> None:
    fname = os.path.split(path)[-1]
    print(fname, end=": ", flush=True)

    fb2 = lxml.etree.parse(path)

    for annotation in fb2.xpath(".//fb:section/fb:annotation", namespaces=ns):
        add_em_for_annotation(annotation)
        # annotation.getparent().remove(annotation)

    name, ext = os.path.splitext(path)
    path_fixed = name + " - fixed annotations" + ext
    fb2.write(path_fixed, xml_declaration=True, encoding="utf-8")
    print("OK", flush=True)


def main() -> int:
    for f in sys.argv[1:]:
        fix_fb2_file(f)
    return 0


if __name__ == "__main__":
    sys.exit(main())