# coding=utf-8

from operator import itemgetter
import prolog.engine
import server.problems

id = 122
number = 29
visible = False
facts = None

solution = '''\
sins(X, [], [X]).
sins(X, [Y|T], [X,Y|T]) :-
  X =< Y.
sins(X, [Y|T], [Y|L]) :-
  X > Y,
  sins(X, T, L).
'''

test_cases = [
    ('sins(4, [], X)',
        [{'X': '[4]'}]),
    ('sins(4, [1, 2, 5, 6, 8], X)',
        [{'X': '[1, 2, 4, 5, 6, 8]'}]),
    ('sins(8, [1, 2, 3, 4, 5, 6, 7], X)',
        [{'X': '[1, 2, 3, 4, 5, 6, 7, 8]'}]),
    ('sins(1, [2, 3, 4, 5, 6, 7], X)',
        [{'X': '[1, 2, 3, 4, 5, 6, 7]'}]),
    ('sins(2, [2, 3, 4, 5, 6, 7], X)',
        [{'X': '[2, 2, 3, 4, 5, 6, 7]'}]),
]

def test(code, aux_code):
    n_correct = 0
    engine_id = None
    try:
        engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0)
        if engine_id is not None and 'error' not in map(itemgetter(0), output):
            # Engine successfully created, and no syntax error in program.
            for query, answers in test_cases:
                if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
                    n_correct += 1
    except socket.timeout:
        pass
    finally:
        if engine_id:
            prolog.engine.destroy(engine_id)

    hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
    return n_correct, len(test_cases), hints

def hint(code, aux_code):
    # TODO
    return []