from scripts.reimport_textures import reimport_textures


def test_copies_files_preserving_relative_paths(tmp_path):
    src = tmp_path / "art_wip"
    dest = tmp_path / "resources_textures"
    (src / "tiles").mkdir(parents=True)
    (src / "tiles" / "grass.png").write_bytes(b"fake-png-bytes")

    count = reimport_textures(src, dest)

    assert count == 1
    assert (dest / "tiles" / "grass.png").read_bytes() == b"fake-png-bytes"


def test_overwrites_an_existing_destination_file(tmp_path):
    src = tmp_path / "art_wip"
    dest = tmp_path / "resources_textures"
    (src / "items").mkdir(parents=True)
    (src / "items" / "staff_oak.png").write_bytes(b"new-art")
    (dest / "items").mkdir(parents=True)
    (dest / "items" / "staff_oak.png").write_bytes(b"old-placeholder")

    reimport_textures(src, dest)

    assert (dest / "items" / "staff_oak.png").read_bytes() == b"new-art"


def test_copies_multiple_nested_files(tmp_path):
    src = tmp_path / "art_wip"
    dest = tmp_path / "resources_textures"
    (src / "a" / "b").mkdir(parents=True)
    (src / "a" / "b" / "one.png").write_bytes(b"1")
    (src / "a" / "two.png").write_bytes(b"2")

    count = reimport_textures(src, dest)

    assert count == 2
    assert (dest / "a" / "b" / "one.png").read_bytes() == b"1"
    assert (dest / "a" / "two.png").read_bytes() == b"2"


def test_ignores_directories_themselves(tmp_path):
    src = tmp_path / "art_wip"
    dest = tmp_path / "resources_textures"
    (src / "empty_dir").mkdir(parents=True)

    count = reimport_textures(src, dest)

    assert count == 0