import unittest
from pathlib import Path

from hf_doc_translation.config import load_config
from hf_doc_translation.markdown import parse_markdown
from hf_doc_translation.validate import ValidationError, validate_segment, validate_structure


class ValidationTest(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        cls.config = load_config("transformers-ja", Path(__file__).parents[1] / "configs")

    def test_japanese_translation_passes(self):
        page = parse_markdown(Path("page.md"), "Install Transformers 2.0.\n", self.config.glossary)
        segment = page.segments[0]
        response = segment.protected.text.replace("Install", "インストール")
        result = validate_segment(segment.source, response, segment.protected, self.config)
        self.assertTrue(result["passed"])

    def test_missing_japanese_translation_fails(self):
        page = parse_markdown(Path("page.md"), "Install Transformers 2.0.\n", self.config.glossary)
        segment = page.segments[0]
        with self.assertRaises(ValidationError):
            validate_segment(segment.source, segment.protected.text, segment.protected, self.config)

    def test_syntax_only_segment_passes_without_model_prose(self):
        page = parse_markdown(Path("page.md"), "<!-- protected comment -->\n")
        segment = page.segments[0]

        result = validate_segment(segment.source, segment.protected.text, segment.protected, self.config)

        self.assertTrue(result["passed"])
        with self.assertRaisesRegex(ValidationError, "added prose"):
            validate_segment(
                segment.source,
                "invented" + segment.protected.text,
                segment.protected,
                self.config,
            )

    def test_structure_fingerprint_allows_prose_change(self):
        source = "# Title\n\n[docs](https://example.com)\n"
        output = "# タイトル\n\n[ドキュメント](https://example.com)\n"
        validate_structure(source, output)


if __name__ == "__main__":
    unittest.main()