import sys
import os

sys.path.append(os.path.dirname(os.path.dirname((__file__))))
from testlib import *

arg = "source"
arg1 = "source1"
arg2 = "source2"
arg3 = "source3"
arg4 = "source4"
arg5 = "source5"
arg6 = "source6"
arg7 = "source7"


def SINK(x, expected=arg):
    if x == expected:
        print("OK")
    else:
        print("Unexpected flow", x)


def SINK1(x):
    SINK(x, expected=arg1)


def SINK2(x):
    SINK(x, expected=arg2)


def SINK3(x):
    SINK(x, expected=arg3)


def SINK4(x):
    SINK(x, expected=arg4)


def SINK5(x):
    SINK(x, expected=arg5)


def SINK6(x):
    SINK(x, expected=arg6)


def SINK7(x):
    SINK(x, expected=arg7)


def argument_passing(
    a,
    b,
    /,
    c,
    d="",
    *,
    e="",
    f,
    **g,
):
    SINK1(a)
    SINK2(b)
    SINK3(c)
    SINK4(d)
    SINK5(e)
    SINK6(f)
    SINK7(g["g"])


@expects(7)
def test_argument_passing():
    argument_passing(arg1, *(arg2, arg3, arg4), e=arg5, **{"f": arg6, "g": arg7})


def with_pos_only(a, /, b):
    SINK1(a)
    SINK2(b)


@expects(6)
def test_pos_only():
    with_pos_only(arg1, arg2)
    with_pos_only(arg1, b=arg2)
    with_pos_only(arg1, *(arg2,))


def with_multiple_kw_args(a, b, c):
    SINK1(a)
    SINK2(b)
    SINK3(c)


@expects(9)
def test_multiple_kw_args():
    with_multiple_kw_args(b=arg2, c=arg3, a=arg1)
    with_multiple_kw_args(arg1, *(arg2,), arg3)
    with_multiple_kw_args(arg1, **{"c": arg3}, b=arg2)


def with_default_arguments(a=arg1, b=arg2, c=arg3):
    SINK1(a)
    SINK2(b)
    SINK3(c)


@expects(12)
def test_default_arguments():
    with_default_arguments()
    with_default_arguments(arg1)
    with_default_arguments(b=arg2)
    with_default_arguments(**{"c": arg3})


# Nested constructor pattern
def grab_foo_bar_baz(foo, **kwargs):
    SINK1(foo)
    grab_bar_baz(**kwargs)


def grab_bar_baz(bar, **kwargs):
    SINK2(bar)
    try:
        SINK2(kwargs["bar"])
    except:
        print("OK")
    grab_baz(**kwargs)


def grab_baz(baz):
    SINK3(baz)


@expects(4)
def test_grab():
    grab_foo_bar_baz(baz=arg3, bar=arg2, foo=arg1)


# All combinations
def test_pos_pos():
    def with_pos(a):
        SINK1(a)

    with_pos(arg1)


def test_pos_pos_only():
    def with_pos_only(a, /):
        SINK1(a)

    with_pos_only(arg1)


def test_pos_star():
    def with_star(*a):
        if len(a) > 0:
            SINK1(a[0])

    with_star(arg1)


def test_pos_kw():
    def with_kw(a=""):
        SINK1(a)

    with_kw(arg1)


def test_kw_pos():
    def with_pos(a):
        SINK1(a)

    with_pos(a=arg1)


def test_kw_kw():
    def with_kw(a=""):
        SINK1(a)

    with_kw(a=arg1)


def test_kw_doublestar():
    def with_doublestar(**a):
        SINK1(a["a"])

    with_doublestar(a=arg1)