from __future__ import annotations

import unittest

from dubizzle_scraper.core.utils import deep_find_key
from dubizzle_scraper.core.config import parse_listing_segments, _AUTO_YEAR_SPLITS


class TestDeepFindKey(unittest.TestCase):
    def test_finds_nested_and_respects_depth(self) -> None:
        payload = {
            "root": {
                "target": "a",
                "nested": [{"target": "b"}, {"x": 1}],
            }
        }
        self.assertEqual(deep_find_key(payload, {"target"}), ["a", "b"])

        deep_payload = {"l1": {"l2": {"l3": {"target": "value"}}}}
        self.assertEqual(deep_find_key(deep_payload, {"target"}, max_depth=2), [])
        self.assertEqual(deep_find_key(deep_payload, {"target"}, max_depth=8), ["value"])


class TestParseListingSegments(unittest.TestCase):
    def test_empty_and_invalid_return_empty(self) -> None:
        self.assertEqual(parse_listing_segments(""), [])
        self.assertEqual(parse_listing_segments("  "), [])
        self.assertEqual(parse_listing_segments("invalid"), [])

    def test_auto_segments_complete_coverage(self) -> None:
        """auto: все годовые диапазоны покрыты, без дыр и без make-фильтра."""
        segs = parse_listing_segments("auto")

        self.assertEqual(len(segs), len(_AUTO_YEAR_SPLITS))
        self.assertEqual(
            [(s["year_min"], s["year_max"]) for s in segs],
            list(_AUTO_YEAR_SPLITS),
        )
        self.assertTrue(all(s["make"] is None for s in segs))

        # Годовые диапазоны покрывают 1950-2027.
        years = set()
        for yr_min, yr_max in _AUTO_YEAR_SPLITS:
            years.update(range(yr_min, yr_max + 1))
        for year in range(1950, 2027):
            self.assertIn(year, years)

    def test_json_input_formats(self) -> None:
        # Массив строк.
        segs = parse_listing_segments('["toyota", "ford"]')
        self.assertEqual(len(segs), 2)
        self.assertEqual(segs[0]["make"], "TOYOTA")

        # Массив объектов с годами.
        segs = parse_listing_segments('[{"make":"BMW","year_min":2020,"year_max":2025}]')
        self.assertEqual(segs[0]["make"], "BMW")
        self.assertEqual(segs[0]["year_min"], 2020)
        self.assertEqual(segs[0]["year_max"], 2025)


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