# coding=utf-8

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

id = 123
number = 30
visible = True
facts = None

solution = '''\
sins123(X, [], [X]).
sins123(X, [Y|T], [X,Y|T]) :-
  X =< Y.
sins123(X, [Y|T], [Y|L]) :-
  X > Y,
  sins123(X, T, L).
isort([], []).
isort([H|T], SL) :-
  isort(T, ST),
  sins123(H, ST, SL).
'''

test_cases = [
    ('isort([], X)',
        [{'X': '[]'}]),
    ('isort([5, 3, 5, 5, 1, 2, 0], X)',
        [{'X': '[0, 1, 2, 3, 5, 5, 5]'}]),
    ('isort([2, 1, 3, 5, 6, 0, 22, 3], X)',
        [{'X': '[0, 1, 2, 3, 3, 5, 6, 22]'}]),
    ('isort([5, 4, 3, 2, 1], X)',
        [{'X': '[1, 2, 3, 4, 5]'}]),
]

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:
        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 []