import re
from python.util import has_token_sequence, string_almost_equal, \
    string_contains_number, get_tokens, get_numbers, get_exception_desc, \
    all_tokens, has_comprehension, has_loop, almost_equal, get_ast
from server.hints import Hint

id = 20805
number = 5
visible = True

solution = '''\
def pathto(fr, to):
    if fr == to:
        return [fr]
    for c in children[fr]:
        d = pathto(c, to)
        if d is not None:
            return [fr] + d
'''

hint_type = {
    'final_hint': Hint('final_hint')
}

precode = """
children = {
    "Adam": ["Matjaž", "Cilka", "Daniel", "Erik"],
    "Aleksander": [],
    "Alenka": [],
    "Barbara": [],
    "Cilka": [],
    "Daniel": ["Elizabeta", "Hans"],
    "Erik": [],
    "Elizabeta": ["Ludvik", "Jurij", "Barbara", "Herman", "Mihael"],
    "Franc": [],
    "Herman": ["Margareta"],
    "Hans": [],
    "Jožef": ["Alenka", "Aleksander", "Petra"],
    "Jurij": ["Franc", "Jožef"],
    "Ludvik": [],
    "Margareta": [],
    "Matjaž": ["Viljem"],
    "Mihael": [],
    "Petra": [],
    "Tadeja": [],
    "Viljem": ["Tadeja"],
}

age = {
    "Adam": 111, "Matjaž": 90, "Cilka": 88, "Daniel": 85, "Erik": 83,
    "Viljem": 58, "Tadeja": 20, "Elizabeta": 67, "Hans": 64, "Ludvik": 50,
    "Jurij": 49, "Barbara": 45, "Herman": 39, "Mihael": 32, "Franc": 30,
    "Jožef": 29, "Margareta": 10, "Alenka": 5, "Aleksander": 7, "Petra": 9
}"""

def test(python, code):
    code = precode + "\n" + code

    func_name = 'pathto'
    tokens = get_tokens(code)
    if not has_token_sequence(tokens, ['def', func_name]):
        return False, [{'id' : 'no_func_name', 'args' : {'func_name' : func_name}}]

    in_out = [
        (('Hans', 'Hans'), ['Hans']),
        (('Daniel', 'Hans'), ['Daniel', 'Hans']),
        (('Adam', 'Hans'), ['Adam', 'Daniel', 'Hans']),
        (('Adam', 'Franc'), ['Adam', 'Daniel', 'Elizabeta', 'Jurij', 'Franc']),
        (('Adam', 'Petra'), ['Adam', 'Daniel', 'Elizabeta', 'Jurij', 'Jožef', 'Petra']),
        (('Elizabeta', 'Aleksander'), ['Elizabeta', 'Jurij', 'Jožef', 'Aleksander']),
        (('Adam', 'Tadeja'), ['Adam', 'Matjaž', 'Viljem', 'Tadeja']),
        (('Daniel', 'Ludvik'), ['Daniel', 'Elizabeta', 'Ludvik'])
    ]

    test_in = [('{0}{1}'.format(func_name, str(l[0])), None)
               for l in in_out]
    test_out = [l[1] for l in in_out]

    answers = python(code=code, inputs=test_in, timeout=1.0)
    n_correct = 0
    tin, tout = None, None
    for i, (ans, to) in enumerate(zip(answers, test_out)):
        res = ans[0]
        corr = res == to
        n_correct += corr
        if not corr:
            tin = test_in[i][0]
            tout = to

    passed = n_correct == len(test_in)
    hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_in)}}]
    if tin:
        hints.append({'id': 'problematic_test_case', 'args': {'testin': str(tin), 'testout': str(tout)}})
    if passed:
        hints.append({'id': 'final_hint'})

    return passed, hints


def hint(python, code):
    tokens = get_tokens(code)

    # run one test first to see if there are any exceptions
    answer = python(code=code, inputs=[(None, None)], timeout=1.0)
    exc = get_exception_desc(answer[0][3])
    if exc: return exc

    return None