# -*- coding: utf-8 -*-
'''
    :codeauthor: :email:`Jayesh Kariya <jayeshk@saltstack.com>`
    :codeauthor: :email:`Andrew Colin Kissa <andrew@topdog.za.net>`
'''
# Import Python libs
from __future__ import absolute_import
import os

# Import Salt Testing Libs
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.unit import skipIf, TestCase
from tests.support.mock import (
    mock_open,
    NO_MOCK,
    NO_MOCK_REASON,
    MagicMock,
    patch
)

# Import Salt Libs
import salt.states.augeas as augeas


@skipIf(NO_MOCK, NO_MOCK_REASON)
class AugeasTestCase(TestCase, LoaderModuleMockMixin):
    '''
    Test cases for salt.states.augeas
    '''
    def setup_loader_modules(self):
        return {augeas: {}}

    # 'change' function tests: 1
    def setUp(self):
        self.name = 'zabbix'
        self.context = '/files/etc/services'
        self.changes = ['ins service-name after service-name[last()]',
                        'set service-name[last()] zabbix-agent']
        self.fp_changes = [
            'ins service-name after /files/etc/services/service-name[last()]',
            'set /files/etc/services/service-name[last()] zabbix-agent']
        self.ret = {'name': self.name,
                    'result': False,
                    'changes': {},
                    'comment': ''}
        method_map = {
            'set':    'set',
            'setm':    'setm',
            'mv':     'move',
            'move':   'move',
            'ins':    'insert',
            'insert': 'insert',
            'rm':     'remove',
            'remove': 'remove',
        }
        self.mock_method_map = MagicMock(return_value=method_map)

    def tearDown(self):
        del self.ret
        del self.changes
        del self.fp_changes
        del self.mock_method_map

    def test_change_non_list_changes(self):
        '''
        Test if none list changes handled correctly
        '''
        comt = ('\'changes\' must be specified as a list')
        self.ret.update({'comment': comt})

        self.assertDictEqual(augeas.change(self.name), self.ret)

    def test_change_non_list_load_path(self):
        '''
        Test if none list load_path is handled correctly
        '''
        comt = ('\'load_path\' must be specified as a list')
        self.ret.update({'comment': comt})

        self.assertDictEqual(augeas.change(
            self.name, self.context, self.changes, load_path='x'), self.ret)

    def test_change_in_test_mode(self):
        '''
        Test test mode handling
        '''
        comt = ('Executing commands in file "/files/etc/services":\n'
                'ins service-name after service-name[last()]'
                '\nset service-name[last()] zabbix-agent')
        self.ret.update({'comment': comt, 'result': True})

        with patch.dict(augeas.__opts__, {'test': True}):
            self.assertDictEqual(
                augeas.change(self.name, self.context, self.changes),
                self.ret)

    def test_change_no_context_without_full_path(self):
        '''
        Test handling of no context without full path
        '''
        comt = 'Error: Changes should be prefixed with /files if no ' \
                'context is provided, change: {0}'\
                .format(self.changes[0])
        self.ret.update({'comment': comt, 'result': False})

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_dict_ = {'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                self.assertDictEqual(
                    augeas.change(self.name, changes=self.changes),
                    self.ret)

    def test_change_no_context_with_full_path_fail(self):
        '''
        Test handling of no context with full path with execute fail
        '''
        self.ret.update({'comment': 'Error: error', 'result': False})

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(
                return_value=dict(retval=False, error='error'))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                self.assertDictEqual(
                    augeas.change(self.name, changes=self.fp_changes),
                    self.ret)

    def test_change_no_context_with_full_path_pass(self):
        '''
        Test handling of no context with full path with execute pass
        '''
        self.ret.update(dict(comment='Changes have been saved',
                            result=True,
                            changes={'diff': '+ zabbix-agent'}))

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(return_value=dict(retval=True))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                mock_filename = MagicMock(return_value='/etc/services')
                with patch.object(augeas, '_workout_filename', mock_filename), \
                        patch('os.path.isfile', MagicMock(return_value=True)):
                    with patch('salt.utils.files.fopen', MagicMock(mock_open)):
                        mock_diff = MagicMock(return_value=['+ zabbix-agent'])
                        with patch('difflib.unified_diff', mock_diff):
                            self.assertDictEqual(augeas.change(self.name,
                                                 changes=self.fp_changes),
                                                 self.ret)

    def test_change_no_context_without_full_path_invalid_cmd(self):
        '''
        Test handling of invalid commands when no context supplied
        '''
        self.ret.update(dict(comment='Error: Command det is not supported (yet)',
                            result=False))

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(return_value=dict(retval=True))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                changes = ['det service-name[last()] zabbix-agent']
                self.assertDictEqual(augeas.change(self.name,
                                    changes=changes),
                                    self.ret)

    def test_change_no_context_without_full_path_invalid_change(self):
        '''
        Test handling of invalid change when no context supplied
        '''
        comt = ('Error: Invalid formatted command, see '
                'debug log for details: require')
        self.ret.update(dict(comment=comt,
                            result=False))
        changes = ['require']

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(return_value=dict(retval=True))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                self.assertDictEqual(augeas.change(self.name,
                                    changes=changes),
                                    self.ret)

    def test_change_no_context_with_full_path_multiple_files(self):
        '''
        Test handling of different paths with no context supplied
        '''
        changes = ['set /files/etc/hosts/service-name test',
                   'set /files/etc/services/service-name test']
        filename = '/etc/hosts/service-name'
        filename_ = '/etc/services/service-name'
        comt = 'Error: Changes should be made to one file at a time, ' \
                'detected changes to {0} and {1}'.format(filename, filename_)
        self.ret.update(dict(comment=comt,
                            result=False))

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(return_value=dict(retval=True))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                self.assertDictEqual(augeas.change(self.name,
                                    changes=changes),
                                    self.ret)

    def test_change_with_context_without_full_path_fail(self):
        '''
        Test handling of context without full path fails
        '''
        self.ret.update(dict(comment='Error: error', result=False))

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(
                return_value=dict(retval=False, error='error'))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                with patch('salt.utils.files.fopen', MagicMock(mock_open)):
                    self.assertDictEqual(augeas.change(self.name,
                                        context=self.context,
                                        changes=self.changes),
                                        self.ret)

    def test_change_with_context_without_old_file(self):
        '''
        Test handling of context without oldfile pass
        '''
        self.ret.update(dict(comment='Changes have been saved',
                            result=True,
                            changes={'updates': self.changes}))

        with patch.dict(augeas.__opts__, {'test': False}):
            mock_execute = MagicMock(return_value=dict(retval=True))
            mock_dict_ = {'augeas.execute': mock_execute,
                        'augeas.method_map': self.mock_method_map}
            with patch.dict(augeas.__salt__, mock_dict_):
                mock_isfile = MagicMock(return_value=False)
                with patch.object(os.path, 'isfile', mock_isfile):
                    self.assertDictEqual(augeas.change(self.name,
                                        context=self.context,
                                        changes=self.changes),
                                        self.ret)