"""Tests for deterministic build-step generation."""
from woodshop.instructions import build_steps, format_steps, polish_prompt
from woodshop.scene import Scene


def _scene():
    s = Scene()
    s.place("2x4", 24)
    s.rename("p1", "leg")
    s.add_feature("p1", "tenon", face="end_b", depth_in=1)        # f1
    s.place("2x4", 48)
    s.add_feature("p2", "mortise", face="top", along_in=24,
                  width_in=1.5, height_in=1, depth_in=1)          # f2
    s.connect("f2", "f1")                                          # seat the joint
    return s


def test_steps_cover_the_build_phases():
    sections = build_steps(_scene())
    titles = [t for t, _ in sections]
    assert "Gather stock" in titles
    assert any("Cut pieces" in t for t in titles)
    assert any("joinery" in t.lower() for t in titles)
    assert any("glue" in t.lower() for t in titles)      # assembly step (has connections)
    assert titles[-1] == "Finish"


def test_steps_carry_real_data():
    text = format_steps(build_steps(_scene()))
    assert "leg" in text                                  # named part appears
    assert "tenon" in text and "mortise" in text          # joinery listed


def test_polish_prompt_guards_numbers():
    p = polish_prompt(build_steps(_scene()))
    assert "do not invent" in p.lower()
    assert "Gather stock" in p


def test_empty_scene_still_formats():
    assert format_steps(build_steps(Scene()))