"""Annotate dictionaries

Created by:
EOLE (http://eole.orion.education.fr)
Copyright (C) 2005-2018

Forked by:
Cadoles (http://www.cadoles.com)
Copyright (C) 2019-2021

distribued with GPL-2 or later license

This program 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 2 of the License, or
(at your option) any later version.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
"""
from .variable import CONVERT_OPTION
import importlib.resources
from os.path import dirname, join
from ..utils import load_modules


ANNOTATORS = None


if not 'files' in dir(importlib.resources):
    # old python version
    class fake_files:
        def __init__(self, package):
            self.mod = []
            dir_package = dirname(importlib.resources._get_package(package).__file__)
            for mod in importlib.resources.contents(package):
                self.mod.append(join(dir_package, mod))

        def iterdir(self):
            return self.mod
    importlib.resources.files = fake_files


def get_level(module):
    return module.level


def get_annotators(annotators, module_name):
    annotators[module_name] = []
    for pathobj in importlib.resources.files(module_name).iterdir():
        path = str(pathobj)
        if not path.endswith('__') and not path.endswith('__.py'):
            module = load_modules(path)
            if 'Annotator' in dir(module):
                annotators[module_name].append(module.Annotator)


class SpaceAnnotator:  # pylint: disable=R0903
    """Transformations applied on a object instance
    """
    def __init__(self,
                 objectspace,
                 eosfunc_files,
                 ):
        global ANNOTATORS
        if ANNOTATORS is None:
            ANNOTATORS = {}
            get_annotators(ANNOTATORS, 'rougail.annotator')
            for extra_annotator in objectspace.rougailconfig['extra_annotators']:
                get_annotators(ANNOTATORS, extra_annotator)
        for extra_annotator in objectspace.rougailconfig['extra_annotators']:
            if extra_annotator not in ANNOTATORS:
                get_annotators(ANNOTATORS, extra_annotator)
        annotators = ANNOTATORS['rougail.annotator'].copy()
        for extra_annotator in objectspace.rougailconfig['extra_annotators']:
            annotators.extend(ANNOTATORS[extra_annotator])
        annotators = sorted(annotators, key=get_level)
        functions = []
        for eosfunc_file in eosfunc_files:
            functions.extend(dir(load_modules(eosfunc_file)))
        for annotator in annotators:
            annotator(objectspace,
                      functions,
                      )


__all__ = ('SpaceAnnotator', 'CONVERT_OPTION')