import math
import os
import sys
import unittest

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import bl_bake as bb


class TestEstimateRayDistance(unittest.TestCase):
    def test_two_percent_of_bbox_diagonal(self):
        # 3-4-12 直角箱对角线 = 13
        self.assertAlmostEqual(bb.estimate_ray_distance((3.0, 4.0, 12.0)), 0.26)

    def test_custom_pct(self):
        self.assertAlmostEqual(
            bb.estimate_ray_distance((1.0, 0.0, 0.0), pct=0.5), 0.5)


class TestOutputStem(unittest.TestCase):
    def test_strips_low_suffix(self):
        self.assertEqual(bb.output_stem("well1500_low"), "well1500")

    def test_keeps_name_without_suffix(self):
        self.assertEqual(bb.output_stem("well1500"), "well1500")

    def test_only_strips_trailing_suffix(self):
        self.assertEqual(bb.output_stem("low_poly_low"), "low_poly")


class TestBboxMismatch(unittest.TestCase):
    def test_identical_ok(self):
        self.assertFalse(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.0, 2.0, 3.0)))

    def test_within_10_percent_ok(self):
        self.assertFalse(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.05, 1.9, 3.2)))

    def test_one_axis_exceeds(self):
        self.assertTrue(bb.bbox_mismatch((1.0, 2.0, 3.0), (1.0, 2.0, 3.5)))

    def test_zero_axis_ignored(self):
        # 平面模型某轴为 0，不应误报
        self.assertFalse(bb.bbox_mismatch((1.0, 0.0, 3.0), (1.0, 0.0, 3.0)))


class TestPercentile(unittest.TestCase):
    def test_interpolates(self):
        self.assertAlmostEqual(bb.percentile([0.0, 10.0], 0.25), 2.5)

    def test_rejects_empty(self):
        with self.assertRaises(ValueError):
            bb.percentile([], 0.99)

    def test_rejects_bad_q(self):
        with self.assertRaises(ValueError):
            bb.percentile([1.0], 1.1)


class TestAdaptiveRayDistance(unittest.TestCase):
    def test_p99_with_safety(self):
        r = bb.adaptive_ray_distance([0.002] * 20, (1.0, 0.0, 0.0))
        self.assertAlmostEqual(r["distance_p99"], 0.002)
        self.assertAlmostEqual(r["value"], 0.003)   # 0.002*1.5，未夹
        self.assertFalse(r["capped"])

    def test_lower_floor(self):
        r = bb.adaptive_ray_distance([0.0], (1.0, 0.0, 0.0))
        self.assertAlmostEqual(r["value"], 0.0005)  # 下限 0.05%
        self.assertFalse(r["capped"])

    def test_upper_cap(self):
        r = bb.adaptive_ray_distance([0.02], (1.0, 0.0, 0.0))
        self.assertAlmostEqual(r["value"], 0.01)    # 夹到 1% 上限
        self.assertTrue(r["capped"])

    def test_zero_bbox_raises(self):
        with self.assertRaises(ValueError):
            bb.adaptive_ray_distance([0.01], (0.0, 0.0, 0.0))


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