# -*- coding: utf-8 -*-

# Import Python libs
from __future__ import absolute_import

# Import Salt testing libs
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.unit import TestCase
from tests.support.mock import Mock, patch, mock_open

# Import Salt libs
import salt.states.kapacitor as kapacitor


def _present(name='testname',
             tick_script='/tmp/script.tick',
             task_type='stream',
             database='testdb',
             retention_policy='default',
             enable=True,
             task=None,
             define_result=True,
             enable_result=True,
             disable_result=True,
             script='testscript'):
    '''
    Run a "kapacitor.present" state after setting up mocks, and return the
    state return value as well as the mocks to make assertions.
    '''
    get_mock = Mock(return_value=task)

    if isinstance(define_result, bool):
        define_result = {'success': define_result}
    define_mock = Mock(return_value=define_result)

    if isinstance(enable_result, bool):
        enable_result = {'success': enable_result}
    enable_mock = Mock(return_value=enable_result)

    if isinstance(disable_result, bool):
        disable_result = {'success': disable_result}
    disable_mock = Mock(return_value=disable_result)

    with patch.dict(kapacitor.__salt__, {
        'kapacitor.get_task': get_mock,
        'kapacitor.define_task': define_mock,
        'kapacitor.enable_task': enable_mock,
        'kapacitor.disable_task': disable_mock,
    }):
        with patch('salt.utils.files.fopen', mock_open(read_data=script)) as open_mock:
            retval = kapacitor.task_present(name, tick_script, task_type=task_type,
                database=database, retention_policy=retention_policy, enable=enable)

    return retval, get_mock, define_mock, enable_mock, disable_mock


def _task(script='testscript', enabled=True, task_type='stream', db='testdb', rp='default'):
    return {
        'script': script,
        'enabled': enabled,
        'type': task_type,
        'dbrps': [{'db': db, 'rp': rp}],
    }


class KapacitorTestCase(TestCase, LoaderModuleMockMixin):
    def setup_loader_modules(self):
        return {
            kapacitor: {
                '__opts__': {'test': False},
                '__env__': 'test'
            }
        }

    def test_task_present_new_task(self):
        ret, get_mock, define_mock, enable_mock, _ = _present()
        get_mock.assert_called_once_with('testname')
        define_mock.assert_called_once_with('testname', '/tmp/script.tick',
            database='testdb', retention_policy='default', task_type='stream')
        enable_mock.assert_called_once_with('testname')
        self.assertIn('TICKscript diff', ret['changes'])
        self.assertIn('enabled', ret['changes'])
        self.assertEqual(True, ret['changes']['enabled']['new'])

    def test_task_present_existing_task_updated_script(self):
        ret, get_mock, define_mock, enable_mock, _ = _present(task=_task(script='oldscript'))
        get_mock.assert_called_once_with('testname')
        define_mock.assert_called_once_with('testname', '/tmp/script.tick',
            database='testdb', retention_policy='default', task_type='stream')
        self.assertEqual(False, enable_mock.called)
        self.assertIn('TICKscript diff', ret['changes'])
        self.assertNotIn('enabled', ret['changes'])

    def test_task_present_existing_task_not_enabled(self):
        ret, get_mock, define_mock, enable_mock, _ = _present(task=_task(enabled=False))
        get_mock.assert_called_once_with('testname')
        self.assertEqual(False, define_mock.called)
        enable_mock.assert_called_once_with('testname')
        self.assertNotIn('diff', ret['changes'])
        self.assertIn('enabled', ret['changes'])
        self.assertEqual(True, ret['changes']['enabled']['new'])

    def test_task_present_disable_existing_task(self):
        ret, get_mock, define_mock, _, disable_mock = _present(task=_task(), enable=False)
        get_mock.assert_called_once_with('testname')
        self.assertEqual(False, define_mock.called)
        disable_mock.assert_called_once_with('testname')
        self.assertNotIn('diff', ret['changes'])
        self.assertIn('enabled', ret['changes'])
        self.assertEqual(False, ret['changes']['enabled']['new'])