# coding: utf-8

# Python libs
from __future__ import absolute_import
import os
import shutil
import tempfile

# Salt libs
import salt.utils
from salt.beacons import inotify

# Salt testing libs
from tests.support.unit import skipIf, TestCase
from tests.support.mixins import LoaderModuleMockMixin
# Third-party libs
try:
    import pyinotify  # pylint: disable=unused-import
    HAS_PYINOTIFY = True
except ImportError:
    HAS_PYINOTIFY = False


@skipIf(not HAS_PYINOTIFY, 'pyinotify is not available')
class INotifyBeaconTestCase(TestCase, LoaderModuleMockMixin):
    '''
    Test case for salt.beacons.inotify
    '''

    def setup_loader_modules(self):
        return {inotify: {}}

    def setUp(self):
        self.tmpdir = tempfile.mkdtemp()

    def tearDown(self):
        shutil.rmtree(self.tmpdir, ignore_errors=True)

    def test_empty_config(self):
        config = {}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])

    def test_file_open(self):
        path = os.path.realpath(__file__)
        config = {path: {'mask': ['open']}}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])

        with salt.utils.fopen(path, 'r') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], path)
        self.assertEqual(ret[0]['change'], 'IN_OPEN')

    def test_dir_no_auto_add(self):
        config = {self.tmpdir: {'mask': ['create']}}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])
        fp = os.path.join(self.tmpdir, 'tmpfile')
        with salt.utils.fopen(fp, 'w') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], fp)
        self.assertEqual(ret[0]['change'], 'IN_CREATE')
        with salt.utils.fopen(fp, 'r') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])

    def test_dir_auto_add(self):
        config = {self.tmpdir: {'mask': ['create', 'open'], 'auto_add': True}}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])
        fp = os.path.join(self.tmpdir, 'tmpfile')
        with salt.utils.fopen(fp, 'w') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 2)
        self.assertEqual(ret[0]['path'], fp)
        self.assertEqual(ret[0]['change'], 'IN_CREATE')
        self.assertEqual(ret[1]['path'], fp)
        self.assertEqual(ret[1]['change'], 'IN_OPEN')
        with salt.utils.fopen(fp, 'r') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], fp)
        self.assertEqual(ret[0]['change'], 'IN_OPEN')

    def test_dir_recurse(self):
        dp1 = os.path.join(self.tmpdir, 'subdir1')
        os.mkdir(dp1)
        dp2 = os.path.join(dp1, 'subdir2')
        os.mkdir(dp2)
        fp = os.path.join(dp2, 'tmpfile')
        with salt.utils.fopen(fp, 'w') as f:
            pass
        config = {self.tmpdir: {'mask': ['open'], 'recurse': True}}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])
        with salt.utils.fopen(fp) as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 3)
        self.assertEqual(ret[0]['path'], dp1)
        self.assertEqual(ret[0]['change'], 'IN_OPEN|IN_ISDIR')
        self.assertEqual(ret[1]['path'], dp2)
        self.assertEqual(ret[1]['change'], 'IN_OPEN|IN_ISDIR')
        self.assertEqual(ret[2]['path'], fp)
        self.assertEqual(ret[2]['change'], 'IN_OPEN')

    def test_dir_recurse_auto_add(self):
        dp1 = os.path.join(self.tmpdir, 'subdir1')
        os.mkdir(dp1)
        config = {self.tmpdir: {'mask': ['create', 'delete'],
                                'recurse': True,
                                'auto_add': True}}
        ret = inotify.beacon(config)
        self.assertEqual(ret, [])
        dp2 = os.path.join(dp1, 'subdir2')
        os.mkdir(dp2)
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], dp2)
        self.assertEqual(ret[0]['change'], 'IN_CREATE|IN_ISDIR')
        fp = os.path.join(dp2, 'tmpfile')
        with salt.utils.fopen(fp, 'w') as f:
            pass
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], fp)
        self.assertEqual(ret[0]['change'], 'IN_CREATE')
        os.remove(fp)
        ret = inotify.beacon(config)
        self.assertEqual(len(ret), 1)
        self.assertEqual(ret[0]['path'], fp)
        self.assertEqual(ret[0]['change'], 'IN_DELETE')
