import unittest
import os
from . import comp
import itertools


class Day7(unittest.TestCase):
    def get_code(self):
        inputfile = os.path.join(os.path.dirname(__file__), "input/day7_input")
        with open(inputfile) as fp:
            return [int(k) for k in fp.readline().split(',')]

    def test_day7a(self):
        com = comp.OpcodeComputer(self.get_code())
        configs = itertools.permutations(range(5), 5)

        res = 0
        out = []
        for conf in configs:
            sig = 0
            for phase in conf:
                out.clear()
                com.process_op([phase, sig], out)
                sig = out[0]
            res = int(out[0]) if int(out[0]) > res else res

        self.assertEqual(res, 21000)

    def test_day7b(self):
        pass