import codecs
import os
import sys

from docutils import nodes
from docutils.parsers.rst import Directive
from docutils.parsers.rst import directives
from docutils.statemachine import StringList
from jinja2 import FileSystemLoader, Environment
import sphinx.util

TEMPLATE = """
.. grid:: 2
    :gutter: 1
    :margin: 0
    :padding: 0

    .. grid-item-card::
        :margin: 0

        NWB Schema
        ^^^
        .. code-block:: yaml

            {{ nwb }}

    .. grid-item-card::
        :margin: 0

        LinkML
        ^^^
        .. code-block:: yaml

            {{ linkml }}
"""

class AdapterDirective(Directive):
    """
    Directive for writing inline adapter doctests with pretty rendering :)

    Based on sphinx-jinja: https://pypi.org/project/sphinx-jinja/
    """
    has_content = True
    optional_arguments = 1
    option_spec = {
        "nwb": directives.unchanged,
        "linkml": directives.unchanged,
    }
    app = None

    def run(self):
        node = nodes.Element()
        node.document = self.state.document

        cxt = {
            'nwb': self.options.get("nwb"),
            'linkml': self.options.get("linkml")
        }
        template = Environment(
            #**conf.jinja_env_kwargs
        ).from_string(TEMPLATE)
        new_content = template.render(**cxt)

        new_content = StringList(new_content.splitlines(), source='')
        sphinx.util.nested_parse_with_titles(self.state, new_content, node)
        return node.children


def debug_print(title, content):
    stars = '*' * 10
    print('\n{1} Begin Debug Output: {0} {1}'.format(title, stars))
    print(content)
    print('\n{1} End Debug Output: {0} {1}'.format(title, stars))


def setup(app):
    AdapterDirective.app = app
    app.add_directive('jinja', JinjaDirective)
    app.add_config_value('jinja_contexts', {}, 'env')
    app.add_config_value('jinja_base', app.srcdir, 'env')
    app.add_config_value('jinja_env_kwargs', {}, 'env')
    app.add_config_value('jinja_filters', {}, 'env')
    app.add_config_value('jinja_tests', {}, 'env')
    app.add_config_value('jinja_globals', {}, 'env')
    app.add_config_value('jinja_policies', {}, 'env')
    return {'parallel_read_safe': True, 'parallel_write_safe': True}