import tempfile
import unittest
from pathlib import Path

from B03_FileInput.B03_FileInput_Engine_Analyze import analyze_planned_route_csv


class PlannedRouteCsvTest(unittest.TestCase):
    def analyze(self, content: str) -> dict:
        with tempfile.TemporaryDirectory() as temporary_dir:
            path = Path(temporary_dir) / "planned_route.csv"
            path.write_text(content, encoding="utf-8")
            return analyze_planned_route_csv(path)

    def test_valid_route_returns_metadata(self) -> None:
        metadata = self.analyze(
            "route_name,sequence,x,y,z,crs_epsg\n"
            "sample,1,183493.5,489290.335,544.659,5187\n"
            "sample,2,183500.0,489300.0,545.0,5187\n"
        )

        self.assertEqual(metadata["purpose"], "planned_route")
        self.assertEqual(metadata["route_name"], "sample")
        self.assertEqual(metadata["point_count"], 2)
        self.assertEqual(metadata["epsg"], 5187)
        self.assertEqual(metadata["start_point"], [183493.5, 489290.335, 544.659])

    def test_missing_header_is_rejected(self) -> None:
        with self.assertRaisesRegex(ValueError, "필수 열"):
            self.analyze("route_name,sequence,x,y,crs_epsg\nsample,1,183493.5,489290.335,5187\n")

    def test_non_numeric_coordinate_is_rejected(self) -> None:
        with self.assertRaisesRegex(ValueError, "x 값은 숫자"):
            self.analyze(
                "route_name,sequence,x,y,z,crs_epsg\n"
                "sample,1,not-a-number,489290.335,544.659,5187\n"
                "sample,2,183500.0,489300.0,545.0,5187\n"
            )

    def test_non_contiguous_sequence_is_rejected(self) -> None:
        with self.assertRaisesRegex(ValueError, "sequence는 2"):
            self.analyze(
                "route_name,sequence,x,y,z,crs_epsg\n"
                "sample,1,183493.5,489290.335,544.659,5187\n"
                "sample,3,183500.0,489300.0,545.0,5187\n"
            )

    def test_mixed_epsg_is_rejected(self) -> None:
        with self.assertRaisesRegex(ValueError, "모든 행에서 같아야"):
            self.analyze(
                "route_name,sequence,x,y,z,crs_epsg\n"
                "sample,1,183493.5,489290.335,544.659,5187\n"
                "sample,2,183500.0,489300.0,545.0,5186\n"
            )


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