import pytest

from dbus_fast import SignatureBodyMismatchError, SignatureTree, Variant
from dbus_fast._private.util import signature_contains_type


def assert_simple_type(signature, type_):
    assert type_.token == signature
    assert type_.signature == signature
    assert len(type_.children) == 0


def test_simple():
    tree = SignatureTree("s")
    assert len(tree.types) == 1
    assert_simple_type("s", tree.types[0])


def test_multiple_simple():
    tree = SignatureTree("sss")
    assert len(tree.types) == 3
    for i in range(0, 3):
        assert_simple_type("s", tree.types[i])


def test_array():
    tree = SignatureTree("as")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.signature == "as"
    assert child.token == "a"
    assert len(child.children) == 1
    assert_simple_type("s", child.children[0])


def test_array_multiple():
    tree = SignatureTree("asasass")
    assert len(tree.types) == 4
    assert_simple_type("s", tree.types[3])
    for i in range(0, 3):
        array_child = tree.types[i]
        assert array_child.token == "a"
        assert array_child.signature == "as"
        assert len(array_child.children) == 1
        assert_simple_type("s", array_child.children[0])


def test_array_nested():
    tree = SignatureTree("aas")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.token == "a"
    assert child.signature == "aas"
    assert len(child.children) == 1
    nested_child = child.children[0]
    assert nested_child.token == "a"
    assert nested_child.signature == "as"
    assert len(nested_child.children) == 1
    assert_simple_type("s", nested_child.children[0])


def test_simple_struct():
    tree = SignatureTree("(sss)")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.signature == "(sss)"
    assert len(child.children) == 3
    for i in range(0, 3):
        assert_simple_type("s", child.children[i])


def test_nested_struct():
    tree = SignatureTree("(s(s(s)))")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.signature == "(s(s(s)))"
    assert child.token == "("
    assert len(child.children) == 2
    assert_simple_type("s", child.children[0])
    first_nested = child.children[1]
    assert first_nested.token == "("
    assert first_nested.signature == "(s(s))"
    assert len(first_nested.children) == 2
    assert_simple_type("s", first_nested.children[0])
    second_nested = first_nested.children[1]
    assert second_nested.token == "("
    assert second_nested.signature == "(s)"
    assert len(second_nested.children) == 1
    assert_simple_type("s", second_nested.children[0])


def test_struct_multiple():
    tree = SignatureTree("(s)(s)(s)")
    assert len(tree.types) == 3
    for i in range(0, 3):
        child = tree.types[0]
        assert child.token == "("
        assert child.signature == "(s)"
        assert len(child.children) == 1
        assert_simple_type("s", child.children[0])


def test_array_of_structs():
    tree = SignatureTree("a(ss)")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.token == "a"
    assert child.signature == "a(ss)"
    assert len(child.children) == 1
    struct_child = child.children[0]
    assert struct_child.token == "("
    assert struct_child.signature == "(ss)"
    assert len(struct_child.children) == 2
    for i in range(0, 2):
        assert_simple_type("s", struct_child.children[i])


def test_dict_simple():
    tree = SignatureTree("a{ss}")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.signature == "a{ss}"
    assert child.token == "a"
    assert len(child.children) == 1
    dict_child = child.children[0]
    assert dict_child.token == "{"
    assert dict_child.signature == "{ss}"
    assert len(dict_child.children) == 2
    assert_simple_type("s", dict_child.children[0])
    assert_simple_type("s", dict_child.children[1])


def test_dict_of_structs():
    tree = SignatureTree("a{s(ss)}")
    assert len(tree.types) == 1
    child = tree.types[0]
    assert child.token == "a"
    assert child.signature == "a{s(ss)}"
    assert len(child.children) == 1
    dict_child = child.children[0]
    assert dict_child.token == "{"
    assert dict_child.signature == "{s(ss)}"
    assert len(dict_child.children) == 2
    assert_simple_type("s", dict_child.children[0])
    struct_child = dict_child.children[1]
    assert struct_child.token == "("
    assert struct_child.signature == "(ss)"
    assert len(struct_child.children) == 2
    for i in range(0, 2):
        assert_simple_type("s", struct_child.children[i])


def test_contains_type():
    tree = SignatureTree("h")
    assert signature_contains_type(tree, [0], "h")
    assert not signature_contains_type(tree, [0], "u")

    tree = SignatureTree("ah")
    assert signature_contains_type(tree, [[0]], "h")
    assert signature_contains_type(tree, [[0]], "a")
    assert not signature_contains_type(tree, [[0]], "u")

    tree = SignatureTree("av")
    body = [
        [
            Variant("u", 0),
            Variant("i", 0),
            Variant("x", 0),
            Variant("v", Variant("s", "hi")),
        ]
    ]
    assert signature_contains_type(tree, body, "u")
    assert signature_contains_type(tree, body, "x")
    assert signature_contains_type(tree, body, "v")
    assert signature_contains_type(tree, body, "s")
    assert not signature_contains_type(tree, body, "o")

    tree = SignatureTree("a{sv}")
    body = {
        "foo": Variant("h", 0),
        "bar": Variant("i", 0),
        "bat": Variant("x", 0),
        "baz": Variant("v", Variant("o", "/hi")),
    }
    for expected in "hixvso":
        assert signature_contains_type(tree, [body], expected)
    assert not signature_contains_type(tree, [body], "b")


def test_invalid_variants():
    tree = SignatureTree("a{sa{sv}}")
    s_con = {
        "type": "802-11-wireless",
        "uuid": "1234",
        "id": "SSID",
    }

    s_wifi = {
        "ssid": "SSID",
        "mode": "infrastructure",
        "hidden": True,
    }

    s_wsec = {
        "key-mgmt": "wpa-psk",
        "auth-alg": "open",
        "psk": "PASSWORD",
    }

    s_ip4 = {"method": "auto"}
    s_ip6 = {"method": "auto"}

    con = {
        "connection": s_con,
        "802-11-wireless": s_wifi,
        "802-11-wireless-security": s_wsec,
        "ipv4": s_ip4,
        "ipv6": s_ip6,
    }

    with pytest.raises(SignatureBodyMismatchError):
        tree.verify([con])


def test_variant_signature_type():
    tree = SignatureTree("as")
    var = Variant(tree.types[0], ["foo", "bar"])
    assert var.type == tree.types[0]
    assert var.value == ["foo", "bar"]
    assert var.signature == "as"

    with pytest.raises(SignatureBodyMismatchError):
        Variant(tree.types[0], "wrong")