# -*- coding: utf-8 -*-
#
#   Copyright © 2017 markdown-textwrap contributors.
#
#    This file is part of markdown-textwrap.
#
#   markdown-textwrap is free software: you can redistribute it
#   and/or modify it under the terms of the GNU General Public License
#   as published by the Free Software Foundation, either version 3 of
#   the License, or (at your option) any later version.
#
#   markdown-textwrap is distributed in the hope that it will be
#   useful, but WITHOUT ANY WARRANTY; without even the implied
#   warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#   See the GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with markdown-textwrap (see COPYING).  If not, see
#   <http://www.gnu.org/licenses/>.

import textwrap

from mistune import Renderer
from nose.tools import assert_equal
from pkg_resources import resource_string, resource_filename

from md_tw import TWBlockLexer, TWInlineLexer, TWRenderer, TWMarkdown

def _get_data(f):
    rs = resource_string(__name__, '/'.join(['data', f]))
    return rs.decode()


def _get_data_path(f):
    return resource_filename(__name__, '/'.join(['data', f]))


class TestTWBlockLexer(object):

    def setup(self):
        self.bl = TWBlockLexer()




    def teardown(self):
        pass


class TestTWInlineLexer(object):

    def setup(self):
        renderer = Renderer()
        self.il = TWInlineLexer(renderer)


    def test_default_rules_contents(self):
        assert_equal(self.il.default_rules, [])


    def teardown(self):
        pass


class TestTWRenderer(object):

    def setup(self):
        pass


    def test_tw_obj_with_default_width(self):
        renderer = TWRenderer()

        # Check existence of textwrap.TexWrapper object.
        assert isinstance(renderer.tw, textwrap.TextWrapper)

        # Check its width
        assert_equal(renderer.tw.width, 72)


    def test_tw_obj_with_custom_width(self):
        renderer = TWRenderer(tw_width=80)

        # Check existence of textwrap.TexWrapper object.
        assert isinstance(renderer.tw, textwrap.TextWrapper)

        # Check its width
        assert_equal(renderer.tw.width, 80)


    def test_tw_set_options_with_valid_opts(self):
        renderer  = TWRenderer()

        # Set valid options
        renderer._tw_set_options(
            width=80,
            initial_indent='> ',
            subsequent_indent=' ',
            drop_whitespace=False)

        # Confirm options are set.
        assert_equal(renderer.tw.width, 80)
        assert_equal(renderer.tw.initial_indent, '> ')
        assert_equal(renderer.tw.subsequent_indent, ' ')
        assert_equal(renderer.tw.drop_whitespace, False)


    def test_tw_set_options_with_invalid_opts(self):
        renderer = TWRenderer()

        # Set invalid options
        renderer._tw_set_options(
            erase_bumps=True,
            destroy_ampersands=False,
            end_width='வருகிறேன்',
            insert_between_paragraphs='time bombs')

        # Confirm options are not set.
        assert_equal(getattr(renderer.tw, 'erase_bumps', None), None)
        assert_equal(getattr(renderer.tw, 'destroy_ampersands',
                                 None), None)
        assert_equal(getattr(renderer.tw, 'end_width', None), None)
        assert_equal(getattr(renderer.tw, 'insert_between_paragraphs',
                                 None), None)


    def teardown(self):
        pass


class TestTWMarkdown(object):

    def setup(self):
        self.md = TWMarkdown()


    def test_renderer_obj(self):
        assert isinstance(self.md.renderer, TWRenderer)


    def test_inline_obj(self):
        assert isinstance(self.md.inline, TWInlineLexer)


    def test_block_obj(self):
        assert isinstance(self.md.block, TWBlockLexer)


    def teardown(self):
        pass


class TestTextWrapParagraphs(object):

    def setup(self):
        self.md = TWMarkdown()


    def test_tw_plain_paragraphs(self):
        txt = _get_data('paragraphs.md')
        expected_wrapped_txt = _get_data('paragraphs-wrapped.md')

        wrapped_txt = self.md(txt)
        assert_equal(wrapped_txt, expected_wrapped_txt)


    def test_tw_paragraphs_with_inline(self):
        txt = _get_data('paragraphs-with-inline.md')
        expected_wrapped_txt = _get_data(
            'paragraphs-with-inline-wrapped.md')

        wrapped_txt = self.md(txt)
        assert_equal(wrapped_txt, expected_wrapped_txt)


    def teardown(self):
        pass