#!/usr/bin/env python3
"""Самопроверка моста без сети: python3 test_translate.py"""
import json
from pathlib import Path

import translate as t


def test_marks_roundtrip():
    src = 'She thinks <i>this is bad</i> &amp; says &#x201c;no&#x201d;'
    marked = t.to_marks(src)
    assert "<i>" not in marked and "⟦i⟧" in marked
    assert "&amp;" not in marked, "сущности должны раскрываться для переводчика"
    body, ok = t.from_marks(marked)
    assert ok
    assert "<i>this is bad</i>" in body
    assert "&amp;" in body, "спецсимволы должны экранироваться обратно"


def test_broken_marks_drop_tags():
    body, ok = t.from_marks("текст ⟦i⟧без закрытия")
    assert not ok and "⟦" not in body and "<i>" not in body


def test_language_detection():
    assert t.detect_language("the quick brown fox " * 40)[0] == "en"
    assert t.detect_language("быстрая бурая лиса " * 40)[0] == "ru"
    assert t.detect_language("short")[0] == "unknown"


def test_split_and_rebuild(tmp: Path):
    src = tmp / "book.html"
    src.write_text("\n".join([
        "<html><body>",
        "<h1>CHAPTER 1</h1>",
        "<p>He said <i>hello</i> loudly.</p>",
        '<p class="figure"><img src="images/img01.png"/></p>',
        "<h1>CHAPTER 2</h1>",
        "<p>Second chapter text.</p>",
        "</body></html>",
    ]), encoding="utf-8")

    blocks = t.parse_blocks(src)
    assert len(blocks) == 4, "картинка не должна попадать в перевод"
    chapters = t.split_chapters(blocks)
    assert [len(c) for c in chapters] == [2, 2]

    extracted = tmp / "extracted"
    t.write_input(chapters, extracted)
    ch0 = json.loads((extracted / "chapter_000.json").read_text(encoding="utf-8"))
    assert ch0["title"] == "CHAPTER 1"
    assert ch0["paragraphs"][1] == "He said ⟦i⟧hello⟦/i⟧ loudly."

    # подделываем ответ book_translator: тот же формат, тот же порядок
    trans = tmp / "translations"
    trans.mkdir()
    for n, ch in enumerate(chapters):
        paragraphs = [json.loads((extracted / ("chapter_%03d.json" % n))
                                 .read_text(encoding="utf-8"))["paragraphs"][i]
                      .replace("He said", "Он сказал").replace("hello", "привет")
                      for i in range(len(ch))]
        (trans / ("chapter_%03d_translated.json" % n)).write_text(
            json.dumps({"number": n, "paragraphs": paragraphs}, ensure_ascii=False),
            encoding="utf-8")

    out = tmp / "book.ru.html"
    assert t.rebuild(src, chapters, tmp, out)
    result = out.read_text(encoding="utf-8")
    assert "<p>Он сказал <i>привет</i> loudly.</p>" in result
    assert '<img src="images/img01.png"/>' in result, "картинка должна уцелеть"
    assert result.count("<h1>") == 2


def test_verify_output_catches_untranslated(tmp: Path):
    """Регресс: первый боевой прогон отрапортовал успех на непереведённом файле."""
    bad = tmp / "bad.html"
    bad.write_text("<p>[UNTRANSLATED] The build is broken.</p>\n" * 30, encoding="utf-8")
    assert not t.verify_output(bad, "ru"), "заглушки должны заваливать проверку"

    english = tmp / "en.html"
    english.write_text("<p>The build is broken again today.</p>\n" * 40, encoding="utf-8")
    assert not t.verify_output(english, "ru"), "английский результат должен заваливать проверку"

    good = tmp / "ru.html"
    good.write_text("<p>Сборка снова сломалась сегодня утром.</p>\n" * 40, encoding="utf-8")
    assert t.verify_output(good, "ru")


if __name__ == "__main__":
    import tempfile

    test_marks_roundtrip()
    test_broken_marks_drop_tags()
    test_language_detection()
    with tempfile.TemporaryDirectory() as d:
        test_split_and_rebuild(Path(d))
    with tempfile.TemporaryDirectory() as d:
        test_verify_output_catches_untranslated(Path(d))
    print("OK")