#!/usr/bin/env python
#
#  Licensed under the Apache License, Version 2.0 (the "License"); you may
#  not use this file except in compliance with the License. You may obtain
#  a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#  License for the specific language governing permissions and limitations
#  under the License.

import argparse
import io
from unittest import mock

from cliff.formatters import shell
from cliff.tests import base
from cliff.tests import test_columns


class TestShellFormatter(base.TestBase):

    def test(self):
        sf = shell.ShellFormatter()
        c = ('a', 'b', 'c', 'd')
        d = ('A', 'B', 'C', '"escape me"')
        expected = 'a="A"\nb="B"\nd="\\"escape me\\""\n'
        output = io.StringIO()
        args = mock.Mock()
        args.variables = ['a', 'b', 'd']
        args.prefix = ''
        sf.emit_one(c, d, output, args)
        actual = output.getvalue()
        self.assertEqual(expected, actual)

    def test_args(self):
        sf = shell.ShellFormatter()
        c = ('a', 'b', 'c', 'd')
        d = ('A', 'B', 'C', '"escape me"')
        expected = 'Xd="\\"escape me\\""\n'
        output = io.StringIO()
        # Parse arguments as if passed on the command-line
        parser = argparse.ArgumentParser(description='Testing...')
        sf.add_argument_group(parser)
        parsed_args = parser.parse_args(['--variable', 'd', '--prefix', 'X'])
        sf.emit_one(c, d, output, parsed_args)
        actual = output.getvalue()
        self.assertEqual(expected, actual)

    def test_formattable_column(self):
        sf = shell.ShellFormatter()
        c = ('a', 'b', 'c')
        d = ('A', 'B', test_columns.FauxColumn(['the', 'value']))
        expected = '\n'.join([
            'a="A"',
            'b="B"',
            'c="[\'the\', \'value\']"\n',
        ])
        output = io.StringIO()
        args = mock.Mock()
        args.variables = ['a', 'b', 'c']
        args.prefix = ''
        sf.emit_one(c, d, output, args)
        actual = output.getvalue()
        self.assertEqual(expected, actual)

    def test_non_string_values(self):
        sf = shell.ShellFormatter()
        c = ('a', 'b', 'c', 'd', 'e')
        d = (True, False, 100, '"esc"', str('"esc"'))
        expected = ('a="True"\nb="False"\nc="100"\n'
                    'd="\\"esc\\""\ne="\\"esc\\""\n')
        output = io.StringIO()
        args = mock.Mock()
        args.variables = ['a', 'b', 'c', 'd', 'e']
        args.prefix = ''
        sf.emit_one(c, d, output, args)
        actual = output.getvalue()
        self.assertEqual(expected, actual)

    def test_non_bash_friendly_values(self):
        sf = shell.ShellFormatter()
        c = ('a', 'foo-bar', 'provider:network_type')
        d = (True, 'baz', 'vxlan')
        expected = 'a="True"\nfoo_bar="baz"\nprovider_network_type="vxlan"\n'
        output = io.StringIO()
        args = mock.Mock()
        args.variables = ['a', 'foo-bar', 'provider:network_type']
        args.prefix = ''
        sf.emit_one(c, d, output, args)
        actual = output.getvalue()
        self.assertEqual(expected, actual)