# The MIT License (MIT)
#
# Copyright (c) 2013 Raitis Stengrevics
# https://github.com/daGrevis/mdx_linkify
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

from bleach.linkifier import Linker

from markdown.postprocessors import Postprocessor
from markdown.extensions import Extension


class LinkifyExtension(Extension):
    def __init__(self, **kwargs):
        self.config = {
            'linker_options': [{}, 'Options for bleach.linkifier.Linker'],
        }
        super(LinkifyExtension, self).__init__(**kwargs)

    def extendMarkdown(self, md):
        md.postprocessors.register(
            LinkifyPostprocessor(
                md,
                self.getConfig('linker_options'),
            ),
            "linkify",
            50,
        )


class LinkifyPostprocessor(Postprocessor):
    def __init__(self, md, linker_options):
        super(LinkifyPostprocessor, self).__init__(md)
        linker_options.setdefault("skip_tags", ["code"])
        self._linker_options = linker_options

    def run(self, text):
        linker = Linker(**self._linker_options)
        return linker.linkify(text)