from pathlib import Path
from unittest import TestCase

from app.core.config import settings
from app.modules.filemanager.transhandler import TransHandler
from app.schemas.file import FileItem


class SubtitleRenameTest(TestCase):
    def setUp(self) -> None:
        self._default_sub = settings.DEFAULT_SUB

    def tearDown(self) -> None:
        settings.DEFAULT_SUB = self._default_sub

    @staticmethod
    def _rename_subtitle(sub_name: str, default_sub: str) -> Path:
        """
        直接调用字幕重命名逻辑，覆盖语言标签识别与默认字幕标记。
        """
        settings.DEFAULT_SUB = default_sub
        sub_item = FileItem(
            storage="local",
            type="file",
            path=f"/source/{sub_name}.srt",
            name=sub_name,
            extension="srt",
        )
        target_file = Path("/target/24 Hours.2001.S02E01.[tmdbid=14064].srt")
        return TransHandler._TransHandler__rename_subtitles(sub_item, target_file)

    def test_traditional_chinese_subtitle_is_not_misclassified_as_simplified(self):
        """
        issue #5703: “繁体中文” 不应命中简中兜底规则，也不应被打上默认简中标签。
        """
        renamed = self._rename_subtitle("24.Hours.S02E01.繁体中文", default_sub="zh-cn")
        self.assertEqual(
            renamed.name,
            "24 Hours.2001.S02E01.[tmdbid=14064].zh-tw.srt",
        )

    def test_traditional_chinese_subtitle_can_be_marked_as_default(self):
        """
        当默认字幕设置为繁中时，仍应保留正确的繁中语言后缀并追加 default 标记。
        """
        renamed = self._rename_subtitle("24.Hours.S02E01.繁体中文", default_sub="zh-tw")
        self.assertEqual(
            renamed.name,
            "24 Hours.2001.S02E01.[tmdbid=14064].default.zh-tw.srt",
        )