# -*- coding: utf-8 -*-
"""`pa_elevation` -- Top/Bottom Elevation and in-place Restraints, PURE.

No Revit, no live model: `elevations_from_bbox` and
`restraints_from_supports` are plain arithmetic over numbers a caller already
measured. The live half (reading a framing element's own bounding box) is
exercised only through a bridge dry-run, not here.
"""
from vibe import knowledge      # noqa: F401  (registers the vibe stub)
from vibe import pa_elevation as E


# ------------------------------------------------------- elevations_from_bbox

def test_bottom_is_the_smaller_z_regardless_of_argument_order():
    top, bottom, height, basis = E.elevations_from_bbox(-2.0, 35.6667)
    assert bottom == -2.0
    assert top == 35.6667
    assert height == 37.6667
    assert 'bounding box' in basis

    # swapped -- min/max is decided by VALUE, not by which argument carried
    # the larger one.
    top2, bottom2, height2, _basis2 = E.elevations_from_bbox(35.6667, -2.0)
    assert (top2, bottom2, height2) == (top, bottom, height)


def test_missing_either_z_is_could_not_read_not_zero():
    assert E.elevations_from_bbox(None, 10.0) == (
        None, None, None, 'could not read a world-space bounding box on '
        'this piece')
    assert E.elevations_from_bbox(0.0, None)[0] is None


def test_height_matching_length_says_nothing_extra():
    _top, _bottom, _height, basis = E.elevations_from_bbox(
        0.0, 20.0, length_ft=20.0)
    assert 'differs' not in basis


def test_height_gap_beyond_tolerance_is_named_in_the_basis():
    _top, _bottom, height, basis = E.elevations_from_bbox(
        0.0, 20.0, length_ft=18.0)
    assert height == 20.0
    assert 'differs' in basis
    assert 'may not be modelled fully upright' in basis


def test_height_gap_within_tolerance_is_not_named():
    _top, _bottom, _height, basis = E.elevations_from_bbox(
        0.0, 20.05, length_ft=20.0)
    assert 'differs' not in basis


# --------------------------------------------------- restraints_from_supports

def test_converts_support_positions_to_elevations():
    text, basis = E.restraints_from_supports('6.21, 15.21, 18.88', -2.0)
    assert text == '4.21, 13.21, 16.88'
    assert 'bottom_elevation_ft' in basis
    assert '-2.00' in basis


def test_sorts_the_output_even_if_supports_ft_was_not_sorted():
    text, _basis = E.restraints_from_supports('18.88, 6.21', 0.0)
    assert text == '6.21, 18.88'


def test_blank_supports_ft_is_nothing_to_convert():
    text, why = E.restraints_from_supports('', 5.0)
    assert text is None
    assert 'supports_ft' in why


def test_none_bottom_elevation_is_nothing_to_convert():
    text, why = E.restraints_from_supports('1.0, 2.0', None)
    assert text is None
    assert 'bottom_elevation_ft' in why


def test_both_missing_names_both():
    text, why = E.restraints_from_supports(None, None)
    assert text is None
    assert 'supports_ft' in why and 'bottom_elevation_ft' in why


def test_non_numeric_token_refuses_the_whole_field():
    text, why = E.restraints_from_supports('6.21, oops, 18.88', 0.0)
    assert text is None
    assert 'oops' in why


def test_whitespace_separated_positions_also_parse():
    text, _basis = E.restraints_from_supports('6.21 15.21', -1.0)
    assert text == '5.21, 14.21'


def test_flat_piece_skips_the_conversion_rather_than_mixing_axes():
    # A slab's bounding-box height is its THICKNESS (0.83 ft), nothing like
    # its length (23.96 ft) -- supports_ft is measured along the length, so
    # adding it to bottom_elevation_ft here would not be an elevation.
    text, why = E.restraints_from_supports(
        '0.25, 1.98, 11.98', 13.5, height_ft=0.8333, length_ft=23.9583)
    assert text is None
    assert 'does not appear to stand with its length vertical' in why


def test_upright_piece_within_tolerance_still_converts():
    text, _why = E.restraints_from_supports(
        '6.21, 15.21', -2.0, height_ft=37.6667, length_ft=37.5833)
    assert text == '4.21, 13.21'