import re
import mistune
from mistune.util import html
from tests import BaseTestCase


IGNORE_CASES = {
    'setext_headings_002',  # we only allow one line title
    'setext_headings_015',

    'setext_headings_003',  # must start with 2 = or -
    'setext_headings_007',  # ignore
    'setext_headings_013',  # ignore

    'html_blocks_039',  # ignore
    'link_reference_definitions_019',  # weird rule

    'block_quotes_008',  # we treat it different

    'list_items_005',  # I don't agree
    'list_items_024',
    'list_items_028',
    'list_items_039',  # no lazy
    'list_items_040',
    'list_items_041',

    'lists_007',  # we use simple way to detect tight list
    'lists_016',
    'lists_017',
    'lists_018',
    'lists_019',

    'block_quotes_005',  # we don't allow lazy continuation
    'block_quotes_006',
    'block_quotes_011',
    'block_quotes_020',
    'block_quotes_023',
    'block_quotes_024',  # this test case shows why lazy is not good

    'code_spans_009',  # code has no priority
    'code_spans_010',

    'entity_and_numeric_character_references_004',  # &entity is allowed
    'entity_and_numeric_character_references_005',

    'links_029',  # emphasis problem
    'links_031',  # different behavior
    'links_034',
    'links_037',
    'links_038',  # code has no priority
    'links_039',
    'links_043',  # emphasis problem
    'links_045',  # different behavior
    'links_046',
    'links_047',
    'links_049',
    'links_050',  # code has no priority
    'links_051',  # different behavior
    'links_064',  # allow empty key
    'links_065',
    'links_077',

    'images_002',  # we just keep everything as raw
    'images_003',
    'images_004',
    'images_005',
    'images_006',
    'images_014',
    'images_018',

    'autolinks_002',  # don't understand
}
INSANE_CASES = {
    'fenced_code_blocks_013',
    'fenced_code_blocks_015',
    'list_items_033',
    'list_items_038',

    'link_reference_definitions_002',  # only allow one line definition
    'link_reference_definitions_003',
    'link_reference_definitions_004',
    'link_reference_definitions_005',
    'link_reference_definitions_007',
    'link_reference_definitions_021',

    'links_025',
    'links_032',
    'links_033',
    'links_041',
    'links_060',
    'links_082',
    'links_084',
}

if html is None:
    PY2_IGNORES = {
        'entity_and_numeric_character_references_001',
        'entity_and_numeric_character_references_002',
        'entity_and_numeric_character_references_003',
        'entity_and_numeric_character_references_008',
        'entity_and_numeric_character_references_009',
        'entity_and_numeric_character_references_010',
        'links_016', 'links_019',
    }
else:
    PY2_IGNORES = []

DIFFERENCES = {
    'tabs_005': lambda s: s.replace('<code>  ', '<code>'),
    'tabs_006': lambda s: s.replace('<code>  ', '<code>'),
    'tabs_007': lambda s: s.replace('<code>  ', '<code>'),
}


PASSED = {
    'tabs', 'thematic', 'atx',
    'setext', 'indented', 'fenced',
    'html_blocks', 'link_ref',
    'paragraphs', 'blank_lines',
    'block_quotes', 'list_items', 'lists',
    'backslash', 'entity', 'code_spans',
    # emphasis
    'links', 'images', 'autolinks', 'raw_html',
    'hard_line', 'soft_line', 'textual',
}


class TestCommonMark(BaseTestCase):
    @classmethod
    def ignore_case(cls, n):
        if n.startswith('emphasis'):
            return True
        if PY2_IGNORES and n in PY2_IGNORES:
            return True
        return (n in IGNORE_CASES) or (n in INSANE_CASES)

    def assert_case(self, n, text, html):
        result = mistune.html(text)
        # normalize to match commonmark
        result = re.sub(r'\s*\n+\s*', '\n', result)
        result = re.sub(r'>\n', '>', result)
        result = re.sub(r'\n<', '<', result)
        expect = re.sub(r'\s*\n+\s*', '\n', html)
        expect = re.sub(r'>\n', '>', expect)
        expect = re.sub(r'\n<', '<', expect)
        if n in DIFFERENCES:
            expect = DIFFERENCES[n](expect)
        self.assertEqual(result, expect)


TestCommonMark.load_fixtures('commonmark.txt')