"""Tests for Geo/tools/block_height_report.py::classify_height.

The Geo tools live outside `Tools/`, so the test adds `Geo/tools` to `sys.path`
before importing the module by name.
"""

import os
import sys

_TOOLS = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.insert(0, _TOOLS)
for _sub in ("review", "gen", "unreal", "blender", "input"):
    sys.path.insert(0, os.path.join(_TOOLS, _sub))


import os
import sys
import unittest

ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", ".."))
sys.path.insert(0, os.path.join(ROOT, "Geo", "tools"))

import block_height_report as bhr  # noqa: E402


class ClassifyHeightTest(unittest.TestCase):
    def test_height_tag_wins(self):
        height, source = bhr.classify_height({"building": "yes", "height": "18.1"})
        self.assertEqual(height, 18.1)
        self.assertEqual(source, "height tag")

    def test_height_tag_beats_levels(self):
        height, _ = bhr.classify_height(
            {"building": "yes", "height": "12.5", "building:levels": "4"})
        self.assertEqual(height, 12.5)

    def test_levels_derive_height(self):
        height, source = bhr.classify_height(
            {"building": "yes", "building:levels": "4"}, level_height=3.2)
        self.assertEqual(height, 12.8)
        self.assertIn("levels x", source)

    def test_roof_is_not_a_building_volume(self):
        # building=roof at layer=1 is an elevated canopy, not a two-storey block.
        height, source = bhr.classify_height({"building": "roof", "layer": "1"})
        self.assertEqual(height, 0.0)
        self.assertIn("not a building volume (roof)", source)

    def test_canopy_is_not_a_building_volume(self):
        # building=canopy at layer=1, found by the Mapbox cross-check.
        height, source = bhr.classify_height({"building": "canopy", "layer": "1"})
        self.assertEqual(height, 0.0)
        self.assertIn("not a building volume (canopy)", source)

    def test_transit_shelter_is_not_a_building_volume(self):
        height, source = bhr.classify_height(
            {"building": "yes", "amenity": "shelter", "shelter_type": "public_transport"})
        self.assertEqual(height, 0.0)
        self.assertIn("not a building volume (shelter)", source)

    def test_missing_data_falls_back_to_a_flagged_guess(self):
        height, source = bhr.classify_height({"building": "yes"})
        self.assertEqual(height, 2 * bhr.LEVEL_HEIGHT)
        self.assertTrue(source.startswith("GUESS"))


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