"""Tests for the cut list / board-feet / shopping estimate."""
import pytest

from woodshop.cutlist import board_feet, cut_rows, nominal_dims, shopping
from woodshop.scene import Scene


def test_nominal_dims():
    assert nominal_dims("2x4") == (2.0, 4.0)
    assert nominal_dims("4x4") == (4.0, 4.0)


def test_board_feet_uses_nominal():
    # 2x4 at 96in = (2*4*96)/144 = 5.333 bd-ft
    assert board_feet("2x4", 96) == pytest.approx(5.3333, abs=1e-3)


def test_cut_rows_groups_and_counts():
    s = Scene()
    s.place("2x4", 48)
    s.place("2x4", 48)
    s.place("2x4", 29)
    rows = cut_rows(s)
    by_len = {r["length_in"]: r for r in rows}
    assert by_len[48.0]["count"] == 2
    assert by_len[29.0]["count"] == 1
    assert by_len[48.0]["board_feet"] == pytest.approx(board_feet("2x4", 48) * 2)


def test_shopping_rounds_up_with_waste():
    s = Scene()
    s.place("2x4", 48)
    s.place("2x4", 48)   # 96in total -> with 10% waste = 105.6 -> 2 sticks of 96in
    assert shopping(s) == {"2x4": 2}


def test_empty_shopping():
    assert shopping(Scene()) == {}


def test_end_tenon_extends_cut_length():
    from woodshop.cutlist import cut_length
    s = Scene()
    s.place("2x4", 24)
    assert cut_length(s.get_part("p1")) == 24
    s.add_feature("p1", "tenon", face="end_b", depth_in=1.5)   # protrudes 1.5"
    assert cut_length(s.get_part("p1")) == 25.5
    # the cut row and board-feet reflect the longer piece
    assert cut_rows(s)[0]["length_in"] == 25.5
    assert cut_rows(s)[0]["board_feet"] == pytest.approx(board_feet("2x4", 25.5))


def test_plywood_uses_sqft_and_sheets():
    from woodshop.cutlist import cut_rows, shopping, format_cutlist
    s = Scene()
    s.place("ply-3/4", 48, width_in=24)       # 48 × 24 = 8 sq ft
    row = cut_rows(s)[0]
    assert row["plywood"] and row["sq_ft"] == pytest.approx(8.0)
    assert shopping(s)["ply-3/4"] == 1        # well under a 32 sq-ft sheet
    assert "sq ft" in format_cutlist(s) and "sheet" in format_cutlist(s)


def test_cut_feature_does_not_change_cut_length():
    from woodshop.cutlist import cut_length
    s = Scene()
    s.place("2x4", 24)
    s.add_feature("p1", "mortise", face="top", width_in=1, height_in=1, depth_in=0.5)
    assert cut_length(s.get_part("p1")) == 24   # cuts don't reduce stock you buy