# encoding: utf-8

from __future__ import absolute_import, unicode_literals

import unittest

import mock

from mopidy import config

from tests import path_to_data_dir


class LoadConfigTest(unittest.TestCase):

    def test_load_nothing(self):
        self.assertEqual({}, config._load([], [], []))

    def test_load_missing_file(self):
        file0 = path_to_data_dir('file0.conf')
        result = config._load([file0], [], [])
        self.assertEqual({}, result)

    @mock.patch('os.access')
    def test_load_nonreadable_file(self, access_mock):
        access_mock.return_value = False
        file1 = path_to_data_dir('file1.conf')
        result = config._load([file1], [], [])
        self.assertEqual({}, result)

    def test_load_single_default(self):
        default = b'[foo]\nbar = baz'
        expected = {'foo': {'bar': 'baz'}}
        result = config._load([], [default], [])
        self.assertEqual(expected, result)

    def test_unicode_default(self):
        default = '[foo]\nbar = æøå'
        expected = {'foo': {'bar': 'æøå'.encode('utf-8')}}
        result = config._load([], [default], [])
        self.assertEqual(expected, result)

    def test_load_defaults(self):
        default1 = b'[foo]\nbar = baz'
        default2 = b'[foo2]\n'
        expected = {'foo': {'bar': 'baz'}, 'foo2': {}}
        result = config._load([], [default1, default2], [])
        self.assertEqual(expected, result)

    def test_load_single_override(self):
        override = ('foo', 'bar', 'baz')
        expected = {'foo': {'bar': 'baz'}}
        result = config._load([], [], [override])
        self.assertEqual(expected, result)

    def test_load_overrides(self):
        override1 = ('foo', 'bar', 'baz')
        override2 = ('foo2', 'bar', 'baz')
        expected = {'foo': {'bar': 'baz'}, 'foo2': {'bar': 'baz'}}
        result = config._load([], [], [override1, override2])
        self.assertEqual(expected, result)

    def test_load_single_file(self):
        file1 = path_to_data_dir('file1.conf')
        expected = {'foo': {'bar': 'baz'}}
        result = config._load([file1], [], [])
        self.assertEqual(expected, result)

    def test_load_files(self):
        file1 = path_to_data_dir('file1.conf')
        file2 = path_to_data_dir('file2.conf')
        expected = {'foo': {'bar': 'baz'}, 'foo2': {'bar': 'baz'}}
        result = config._load([file1, file2], [], [])
        self.assertEqual(expected, result)

    def test_load_directory(self):
        directory = path_to_data_dir('conf1.d')
        expected = {'foo': {'bar': 'baz'}, 'foo2': {'bar': 'baz'}}
        result = config._load([directory], [], [])
        self.assertEqual(expected, result)

    def test_load_directory_only_conf_files(self):
        directory = path_to_data_dir('conf2.d')
        expected = {'foo': {'bar': 'baz'}}
        result = config._load([directory], [], [])
        self.assertEqual(expected, result)

    def test_load_file_with_utf8(self):
        expected = {'foo': {'bar': 'æøå'.encode('utf-8')}}
        result = config._load([path_to_data_dir('file3.conf')], [], [])
        self.assertEqual(expected, result)

    def test_load_file_with_error(self):
        expected = {'foo': {'bar': 'baz'}}
        result = config._load([path_to_data_dir('file4.conf')], [], [])
        self.assertEqual(expected, result)


class ValidateTest(unittest.TestCase):

    def setUp(self):  # noqa: N802
        self.schema = config.ConfigSchema('foo')
        self.schema['bar'] = config.ConfigValue()

    def test_empty_config_no_schemas(self):
        conf, errors = config._validate({}, [])
        self.assertEqual({}, conf)
        self.assertEqual({}, errors)

    def test_config_no_schemas(self):
        raw_config = {'foo': {'bar': 'baz'}}
        conf, errors = config._validate(raw_config, [])
        self.assertEqual({}, conf)
        self.assertEqual({}, errors)

    def test_empty_config_single_schema(self):
        conf, errors = config._validate({}, [self.schema])
        self.assertEqual({'foo': {'bar': None}}, conf)
        self.assertEqual({'foo': {'bar': 'config key not found.'}}, errors)

    def test_config_single_schema(self):
        raw_config = {'foo': {'bar': 'baz'}}
        conf, errors = config._validate(raw_config, [self.schema])
        self.assertEqual({'foo': {'bar': 'baz'}}, conf)
        self.assertEqual({}, errors)

    def test_config_single_schema_config_error(self):
        raw_config = {'foo': {'bar': 'baz'}}
        self.schema['bar'] = mock.Mock()
        self.schema['bar'].deserialize.side_effect = ValueError('bad')
        conf, errors = config._validate(raw_config, [self.schema])
        self.assertEqual({'foo': {'bar': None}}, conf)
        self.assertEqual({'foo': {'bar': 'bad'}}, errors)

    # TODO: add more tests


INPUT_CONFIG = """# comments before first section should work

[section] anything goes ; after the [] block it seems.
; this is a valid comment
this-should-equal-baz = baz ; as this is a comment
this-should-equal-everything = baz # as this is not a comment

# this is also a comment ; and the next line should be a blank comment.
;
# foo # = should all be treated as a comment."""

PROCESSED_CONFIG = """[__COMMENTS__]
__HASH0__ = comments before first section should work
__BLANK1__ =
[section]
__SECTION2__ = anything goes
__INLINE3__ = after the [] block it seems.
__SEMICOLON4__ = this is a valid comment
this-should-equal-baz = baz
__INLINE5__ = as this is a comment
this-should-equal-everything = baz # as this is not a comment
__BLANK6__ =
__HASH7__ = this is also a comment
__INLINE8__ = and the next line should be a blank comment.
__SEMICOLON9__ =
__HASH10__ = foo # = should all be treated as a comment."""


class PreProcessorTest(unittest.TestCase):
    maxDiff = None  # Show entire diff.

    def test_empty_config(self):
        result = config._preprocess('')
        self.assertEqual(result, '[__COMMENTS__]')

    def test_plain_section(self):
        result = config._preprocess('[section]\nfoo = bar')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 'foo = bar')

    def test_initial_comments(self):
        result = config._preprocess('; foobar')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '__SEMICOLON0__ = foobar')

        result = config._preprocess('# foobar')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '__HASH0__ = foobar')

        result = config._preprocess('; foo\n# bar')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '__SEMICOLON0__ = foo\n'
                                 '__HASH1__ = bar')

    def test_initial_comment_inline_handling(self):
        result = config._preprocess('; foo ; bar ; baz')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '__SEMICOLON0__ = foo\n'
                                 '__INLINE1__ = bar\n'
                                 '__INLINE2__ = baz')

    def test_inline_semicolon_comment(self):
        result = config._preprocess('[section]\nfoo = bar ; baz')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 'foo = bar\n'
                                 '__INLINE0__ = baz')

    def test_no_inline_hash_comment(self):
        result = config._preprocess('[section]\nfoo = bar # baz')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 'foo = bar # baz')

    def test_section_extra_text(self):
        result = config._preprocess('[section] foobar')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 '__SECTION0__ = foobar')

    def test_section_extra_text_inline_semicolon(self):
        result = config._preprocess('[section] foobar ; baz')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 '__SECTION0__ = foobar\n'
                                 '__INLINE1__ = baz')

    def test_conversion(self):
        """Tests all of the above cases at once."""
        result = config._preprocess(INPUT_CONFIG)
        self.assertEqual(result, PROCESSED_CONFIG)


class PostProcessorTest(unittest.TestCase):
    maxDiff = None  # Show entire diff.

    def test_empty_config(self):
        result = config._postprocess('[__COMMENTS__]')
        self.assertEqual(result, '')

    def test_plain_section(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '[section]\n'
                                     'foo = bar')
        self.assertEqual(result, '[section]\nfoo = bar')

    def test_initial_comments(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '__SEMICOLON0__ = foobar')
        self.assertEqual(result, '; foobar')

        result = config._postprocess('[__COMMENTS__]\n'
                                     '__HASH0__ = foobar')
        self.assertEqual(result, '# foobar')

        result = config._postprocess('[__COMMENTS__]\n'
                                     '__SEMICOLON0__ = foo\n'
                                     '__HASH1__ = bar')
        self.assertEqual(result, '; foo\n# bar')

    def test_initial_comment_inline_handling(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '__SEMICOLON0__ = foo\n'
                                     '__INLINE1__ = bar\n'
                                     '__INLINE2__ = baz')
        self.assertEqual(result, '; foo ; bar ; baz')

    def test_inline_semicolon_comment(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '[section]\n'
                                     'foo = bar\n'
                                     '__INLINE0__ = baz')
        self.assertEqual(result, '[section]\nfoo = bar ; baz')

    def test_no_inline_hash_comment(self):
        result = config._preprocess('[section]\nfoo = bar # baz')
        self.assertEqual(result, '[__COMMENTS__]\n'
                                 '[section]\n'
                                 'foo = bar # baz')

    def test_section_extra_text(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '[section]\n'
                                     '__SECTION0__ = foobar')
        self.assertEqual(result, '[section] foobar')

    def test_section_extra_text_inline_semicolon(self):
        result = config._postprocess('[__COMMENTS__]\n'
                                     '[section]\n'
                                     '__SECTION0__ = foobar\n'
                                     '__INLINE1__ = baz')
        self.assertEqual(result, '[section] foobar ; baz')

    def test_conversion(self):
        result = config._postprocess(PROCESSED_CONFIG)
        self.assertEqual(result, INPUT_CONFIG)