#!/usr/bin/env python3

import argparse
import aoclib
import importlib
import os
import timeit

TIMEIT_NUMBER = 50

argument_parser = argparse.ArgumentParser()
argument_parser.add_argument("-d", "--day", help="specify day to process; leave empty for ALL days", type=int)
argument_parser.add_argument("-t", "--test", help="run test cases", action="store_true", default=False)
argument_parser.add_argument("-p", "--part", help="run only part x", choices=[1, 2], type=int)
argument_parser.add_argument("--timeit", help="measure execution time", action="store_true", default=False)
argument_parser.add_argument(
    "--timeit-number",
    help="build average time over this many executions",
    type=int,
    default=TIMEIT_NUMBER
)
flags = argument_parser.parse_args()

import_day = ""
if flags.day:
    import_day = "%02d" % flags.day

imported = []
for _, _, files in os.walk(aoclib.BASE_PATH):
    for f in files:
        if f.startswith('day' + import_day) and f.endswith('.py'):
            lib_name = f[:-3]
            globals()[lib_name] = importlib.import_module(lib_name)
            imported.append(lib_name)

    break

for lib in sorted(imported):
    day = int(lib[-2:])
    if not flags.test:
        if not flags.part or flags.part == 1:
            test_part_1 = getattr(globals()[lib], "part1")(test_mode=True)
            test_solution_1 = getattr(globals()[lib], "TEST_SOLUTION_PART1")
            if test_part_1 != test_solution_1:
                print(
                    "TEST FAILED for Day %s Part 1: Expected %s; Got %s"
                    % (day, test_solution_1, test_part_1)
                )

        if not flags.part or flags.part == 2:
            test_part_2 = getattr(globals()[lib], "part2")(test_mode=True)
            test_solution_2 = getattr(globals()[lib], "TEST_SOLUTION_PART2")
            if test_part_2 != test_solution_2:
                print(
                    "TEST FAILED for Day %s Part 2: Expected %s; Got %s"
                    % (day, test_solution_2, test_part_2)
                )

    if not flags.part or flags.part == 1:
        if not flags.timeit:
            aoclib.printSolution(day, 1, globals()[lib].part1(test_mode=flags.test), test=flags.test)
        else:
            exec_time = timeit.timeit(
                'globals()[lib].part1(test_mode=flags.test)',
                globals=globals(),
                number=flags.timeit_number
            ) / flags.timeit_number
            aoclib.print_execution_time(day, 1, exec_time)

    if not flags.part or flags.part == 2:
        if not flags.timeit:
            aoclib.printSolution(day, 2, globals()[lib].part2(test_mode=flags.test), test=flags.test)
        else:
            exec_time = timeit.timeit(
                'globals()[lib].part2(test_mode=flags.test)',
                globals=globals(),
                number=flags.timeit_number
            ) / flags.timeit_number
            aoclib.print_execution_time(day, 2, exec_time)