"""Phase 1: material + finish fields, color resolver, color helpers."""
import json

from woodshop import colors
from woodshop.scene import Scene, part_color


def test_set_material_and_finish():
    s = Scene()
    s.place("2x4", 24)
    s.set_material("p1", "oak")
    s.set_finish("p1", "sanded")
    p = s.get_part("p1")
    assert p.material == "oak" and p.finish == "sanded"


def test_paint_normalizes_color_name():
    s = Scene()
    s.place("2x4", 24)
    s.paint("p1", "navy")
    p = s.get_part("p1")
    assert p.finish == "paint" and p.finish_color == colors.NAMED["navy"]


def test_finish_roundtrips_through_json():
    s = Scene()
    s.place("2x4", 24)
    s.paint("p1", "#112233")
    s2 = Scene.from_dict(json.loads(json.dumps(s.to_dict())))
    p = s2.get_part("p1")
    assert p.finish == "paint" and p.finish_color == "#112233"


def test_legacy_finishes_list_migrates():
    raw = {"parts": [{"id": "p1", "stock": "2x4", "length_in": 24.0,
                      "section_in": [1.5, 3.5], "finishes": ["sanded"]}]}
    s = Scene.from_dict(raw)
    assert s.get_part("p1").finish == "sanded"


def test_part_color_priority():
    s = Scene()
    s.place("2x4", 24)
    p = s.get_part("p1")
    # raw spruce default
    raw = part_color(p)
    s.set_finish("p1", "sanded")
    assert part_color(p) != raw                       # sanded is lighter
    s.paint("p1", "#ff0000")
    assert part_color(p) == "#ff0000"                 # paint wins


def test_part_color_fallback_when_no_material():
    s = Scene()
    s.place("2x4", 24)
    p = s.get_part("p1")
    p.material = "__unknown__"
    assert part_color(p, fallback="#abcdef") == "#abcdef"


def test_color_helpers():
    assert colors.normalize_color("navy") == colors.NAMED["navy"]
    assert colors.normalize_color("#abc") == "#abc"
    assert colors.normalize_color("aabbcc") == "#aabbcc"
    assert colors.normalize_color("not-a-color") == "#808080"
    assert colors.lighten("#000000", 0.5) == "#808080"
    assert colors.darken("#ffffff", 0.5) == "#808080"