# coding=utf-8

from python.util import has_token_sequence, string_almost_equal, \
    string_contains_number, get_tokens
from server.hints import Hint, HintSequence

id = 185
group = 'while_and_if'
number = 1
visible = True

solution = '''\
vsota = 0
i = 0
while i < 5:
    vsota += int(input('Cena artikla: '))
    i += 1
print('Vsota:', vsota)
'''

hint_type = {
    'plan': HintSequence('plan', 5),
    'name_error': Hint('name_error'),
    'type_error': Hint('name'),
    'error': Hint('error'),
    'printing': Hint('printing'),
}

def test(python, code):
    # List of inputs: (expression to eval, stdin).
    test_in = [
        (None, '1\n1\n1\n1\n1\n'),
        (None, '1\n2\n3\n4\n5\n'),
        (None, '1\n2\n0\n3\n-1\n'),
        (None, '5\n4\n3\n11\n7\n'),
        (None, '0\n0\n0\n0\n0\n'),
    ]

    test_out = [
        5,
        15,
        5,
        29,
        0,
    ]

    # List of outputs: (expression result, stdout, stderr, exception).
    answers = python(code=code, inputs=test_in, timeout=1.0)
    outputs = [ans[1] for ans in answers]

    n_correct = 0
    for output, correct in zip(outputs, test_out):
        if string_contains_number(output, correct):
            n_correct += 1
    return n_correct, len(test_in)

def hint(python, code):
    # run one test first to see if there are any exceptions
    test_in = [(None, '1\n1\n1\n1\n1\n')]
    answer = python(code=code, inputs=test_in, timeout=1.0)
    exc = answer[0][3]
    # if have an exception!
    if exc:
        if 'NameError' in exc:
            return [{'id':'name_error', 'args': {'message': exc}}]
        elif 'TypeError' in exc:
            return [{'id':'type_error', 'args': {'message': exc}}]
        else:
            return [{'id':'error', 'args': {'message': exc}}]

    # student is not using print function
    if not has_token_sequence(code, ['print']):
        return [{'id' : 'printing'}]

    return None