"""D17 Human-in-Loop 闭环：compute_fingerprint 分桶边界值测试。

compute_fingerprint 是跨任务匹配的核心函数，纯函数，单独覆盖各分桶边界。
D17 验收：fingerprint 字典结构稳定 + 分桶边界值与 plan §5.1 一致。
"""
import pytest

from moldinsight.services.experience_feedback_service import compute_fingerprint


def _geo(volume: float = 50000.0, dims=(80, 60, 40), faces: int = 250, undercuts: int = 0):
    """构造测试用 geometry_data 字典。dims 单位 mm，volume 单位 mm³。"""
    return {
        "volume": volume,
        "bounding_box": {
            "dimensions": list(dims),
        },
        "topology_faces": faces,
        "undercut_count": undercuts,
    }


# ── bbox_aspect 分桶（按 sorted_dims mid/min 比）──

@pytest.mark.parametrize("dims,expected", [
    # ratio = mid/min
    ((100, 100, 100), "compact"),    # ratio=1.0 → compact（1.0 ≤ r < 1.5）
    ((100, 130, 100), "compact"),    # ratio=1.0（去重后）
    ((60, 80, 100), "compact"),      # ratio=1.0 → compact
    ((40, 80, 100), "slab"),         # ratio=80/40=2.0 → slab（1.5 ≤ r < 3.0）
    ((20, 80, 100), "elongated"),    # ratio=80/20=4.0 → elongated（3.0 ≤ r < 6.0）
    ((10, 80, 100), "long_bar"),     # ratio=80/10=8 → long_bar（≥ 6.0）
    ((0, 0, 0), "compact"),          # 零值默认
])
def test_bbox_aspect_bucket(dims, expected):
    fp = compute_fingerprint(_geo(dims=dims), "ABS", False)
    assert fp["bbox_aspect"] == expected, f"dims={dims} → expected {expected}, got {fp['bbox_aspect']}"


# ── volume_bucket 分桶（mm³ → cm³，buckets: xs<10 / s<100 / m<500 / l<2000 / xl≥2000）──

@pytest.mark.parametrize("volume_mm3,expected", [
    (0, "xs"),                # 0 cm³
    (5000, "xs"),             # 5 cm³
    (9999, "xs"),             # 边界 9.99 cm³ → xs
    (10000, "s"),             # 10 cm³ → s（10 ≤ v < 100）
    (50000, "s"),             # 50 cm³
    (99999, "s"),             # 边界 99.99 cm³
    (100000, "m"),            # 100 cm³ → m（100 ≤ v < 500）
    (250000, "m"),             # 250 cm³
    (499999, "m"),            # 边界 499.99 cm³
    (500000, "l"),            # 500 cm³ → l（500 ≤ v < 2000）
    (1000000, "l"),            # 1000 cm³
    (1999999, "l"),           # 边界 1999.99 cm³
    (2000000, "xl"),          # 2000 cm³ → xl（v ≥ 2000）
    (10000000, "xl"),          # 10000 cm³
])
def test_volume_bucket(volume_mm3, expected):
    fp = compute_fingerprint(_geo(volume=volume_mm3), "ABS", False)
    assert fp["volume_bucket"] == expected, f"volume={volume_mm3}mm³ → expected {expected}, got {fp['volume_bucket']}"


# ── face_bucket 分桶 ──

@pytest.mark.parametrize("faces,expected", [
    (0, "simple"),           # 0 面
    (99, "simple"),          # 边界 99
    (100, "normal"),          # 边界 100
    (499, "normal"),          # 边界 499
    (500, "complex"),         # 边界 500
    (1999, "complex"),       # 边界 1999
    (2000, "dense"),          # 边界 2000
    (10000, "dense"),
])
def test_face_bucket(faces, expected):
    fp = compute_fingerprint(_geo(faces=faces), "ABS", False)
    assert fp["face_bucket"] == expected, f"faces={faces} → expected {expected}, got {fp['face_bucket']}"


# ── undercut_class 分桶 ──

@pytest.mark.parametrize("undercuts,expected", [
    (0, "none"),               # 0 → none
    (1, "mild"),               # 1 → mild
    (3, "mild"),                # 边界 3
    (4, "moderate"),            # 边界 4
    (8, "moderate"),            # 边界 8
    (9, "heavy"),                # 边界 9
    (50, "heavy"),
])
def test_undercut_class(undercuts, expected):
    fp = compute_fingerprint(_geo(undercuts=undercuts), "ABS", False)
    assert fp["undercut_class"] == expected, f"undercuts={undercuts} → expected {expected}, got {fp['undercut_class']}"


# ── material_family 分桶 ──

@pytest.mark.parametrize("material,expected", [
    ("ABS", "abs"),
    ("ABS+PC", "abs"),     # 子串匹配
    ("PP", "pp"),
    ("PA66", "pa"),
    ("AlSi10Mg", "foam"),  # "al" + "si"
    ("AlSi12", "foam"),
    ("Aluminium Alloy", "other"),  # 只有 al 无 si
    ("POM", "other"),
    ("", "other"),
])
def test_material_family(material, expected):
    fp = compute_fingerprint(_geo(), material, False)
    assert fp["material_family"] == expected, f"material={material} → expected {expected}, got {fp['material_family']}"


# ── is_foam 字段 ──

@pytest.mark.parametrize("is_foam,expected", [
    (True, "true"),
    (False, "false"),
])
def test_is_foam(is_foam, expected):
    fp = compute_fingerprint(_geo(), "ABS", is_foam)
    assert fp["is_foam"] == expected


# ── 字典键完整性 ──

def test_fingerprint_has_all_keys():
    fp = compute_fingerprint(_geo(), "ABS", False)
    expected_keys = {
        "bbox_aspect", "volume_bucket", "face_bucket",
        "undercut_class", "material_family", "is_foam",
    }
    assert set(fp.keys()) == expected_keys


# ── 空 geometry_data 容错 ──

def test_empty_geometry_data_returns_safe_defaults():
    fp = compute_fingerprint(None, "ABS", False)
    # 不应抛异常，所有键存在且为合法 bucket 值
    assert fp["bbox_aspect"] == "compact"
    assert fp["volume_bucket"] == "xs"
    assert fp["face_bucket"] == "simple"
    assert fp["undercut_class"] == "none"
    assert fp["material_family"] == "abs"
    assert fp["is_foam"] == "false"


def test_partial_geometry_data():
    """只有 bounding_box 没有 topology_faces，应走 fallback 0。"""
    fp = compute_fingerprint(
        {"bounding_box": {"dimensions": [100, 100, 100]}},
        "ABS",
        False,
    )
    assert fp["face_bucket"] == "simple"   # 0 面 → simple