import tempfile
import os
import time

import pytest

from larigira.audiogen_mostrecent import recent_choose


@pytest.fixture
def now(request):
    return int(time.time())


@pytest.fixture
def yesterday(request):
    return int(time.time()) - 24 * 60 * 60


@pytest.fixture
def empty_dir():
    dirpath = tempfile.mkdtemp(prefix="mostrecent.")
    yield dirpath
    os.removedirs(dirpath)


@pytest.fixture
def dir_with_old_file(empty_dir):
    fd, fname = tempfile.mkstemp(prefix="old.", dir=empty_dir)
    os.close(fd)
    os.utime(fname, times=(0, 0))
    yield empty_dir
    os.unlink(fname)


@pytest.fixture
def dir_with_yesterday_file(empty_dir, yesterday):
    fd, fname = tempfile.mkstemp(prefix="yesterday.", dir=empty_dir)
    os.close(fd)
    os.utime(fname, times=(yesterday, yesterday))
    yield empty_dir
    os.unlink(fname)


@pytest.fixture
def dir_with_new_file(dir_with_old_file, now):
    fd, fname = tempfile.mkstemp(prefix="new.", dir=dir_with_old_file)
    os.close(fd)
    os.utime(fname, times=(now, now))
    yield dir_with_old_file
    os.unlink(fname)


@pytest.fixture
def dir_with_two_recent_files(dir_with_yesterday_file, now):
    fd, fname = tempfile.mkstemp(prefix="new.", dir=dir_with_yesterday_file)
    os.close(fd)
    os.utime(fname, times=(now, now))
    yield dir_with_yesterday_file
    os.unlink(fname)


def test_empty_is_empty(empty_dir, now):
    """nothing can be picked from a empty dir"""
    picked = recent_choose([empty_dir], 1, now)
    assert len(picked) == 0


def test_old_files(dir_with_old_file, now):
    picked = recent_choose([dir_with_old_file], 1, now)
    assert len(picked) == 0


def test_new_files_found(dir_with_new_file):
    picked = recent_choose([dir_with_new_file], 1, 1)
    assert len(picked) == 1
    assert os.path.basename(picked[0]).startswith("new.")


def test_only_new_files_found(dir_with_new_file):
    picked = recent_choose([dir_with_new_file], 2, 1)
    assert len(picked) == 1
    assert os.path.basename(picked[0]).startswith("new.")


def test_correct_sorting(dir_with_two_recent_files):
    picked = recent_choose([dir_with_two_recent_files], 1, 1)
    assert len(picked) == 1
    assert not os.path.basename(picked[0]).startswith("yesterday.")
    assert os.path.basename(picked[0]).startswith("new.")