import pytest

from textual.css.errors import StyleValueError
from textual.dom import DOMNode, BadIdentifier


def test_display_default():
    node = DOMNode()
    assert node.display is True


@pytest.mark.parametrize(
    "setter_value,style_value",
    [[True, "block"], [False, "none"], ["block", "block"], ["none", "none"]],
)
def test_display_set_bool(setter_value, style_value):
    node = DOMNode()
    node.display = setter_value
    assert node.styles.display == style_value


def test_display_set_invalid_value():
    node = DOMNode()
    with pytest.raises(StyleValueError):
        node.display = "blah"


def test_validate():
    with pytest.raises(BadIdentifier):
        DOMNode(id="23")
    with pytest.raises(BadIdentifier):
        DOMNode(id=".3")
    with pytest.raises(BadIdentifier):
        DOMNode(classes="+2323")
    with pytest.raises(BadIdentifier):
        DOMNode(classes="foo 22")

    node = DOMNode()
    node.add_class("foo")
    with pytest.raises(BadIdentifier):
        node.add_class("1")
    with pytest.raises(BadIdentifier):
        node.remove_class("1")
    with pytest.raises(BadIdentifier):
        node.toggle_class("1")


def test_inherited_bindings():
    """Test if binding merging is done correctly when (not) inheriting bindings."""
    class A(DOMNode):
        BINDINGS = [("a", "a", "a")]

    class B(A):
        BINDINGS = [("b", "b", "b")]

    class C(B, inherit_bindings=False):
        BINDINGS = [("c", "c", "c")]

    class D(C, inherit_bindings=False):
        pass

    class E(D):
        BINDINGS = [("e", "e", "e")]

    a = A()
    assert list(a._bindings.keys.keys()) == ["a"]

    b = B()
    assert list(b._bindings.keys.keys()) == ["a", "b"]

    c = C()
    assert list(c._bindings.keys.keys()) == ["c"]

    d = D()
    assert not list(d._bindings.keys.keys())

    e = E()
    assert list(e._bindings.keys.keys()) == ["e"]


@pytest.fixture
def search():
    """
        a
       / \
      b   c
     /   / \
    d   e   f
    """
    a = DOMNode(id="a")
    b = DOMNode(id="b")
    c = DOMNode(id="c")
    d = DOMNode(id="d")
    e = DOMNode(id="e")
    f = DOMNode(id="f")

    a._add_child(b)
    a._add_child(c)
    b._add_child(d)
    c._add_child(e)
    c._add_child(f)

    yield a


def test_walk_children_depth(search):
    children = [
        node.id for node in search.walk_children(method="depth", with_self=False)
    ]
    assert children == ["b", "d", "c", "e", "f"]


def test_walk_children_with_self_depth(search):
    children = [
        node.id for node in search.walk_children(method="depth", with_self=True)
    ]
    assert children == ["a", "b", "d", "c", "e", "f"]


def test_walk_children_breadth(search):
    children = [
        node.id for node in search.walk_children(with_self=False, method="breadth")
    ]
    print(children)
    assert children == ["b", "c", "d", "e", "f"]


def test_walk_children_with_self_breadth(search):
    children = [
        node.id for node in search.walk_children(with_self=True, method="breadth")
    ]
    print(children)
    assert children == ["a", "b", "c", "d", "e", "f"]

    children = [
        node.id
        for node in search.walk_children(with_self=True, method="breadth", reverse=True)
    ]

    assert children == ["f", "e", "d", "c", "b", "a"]