# -*- coding: utf-8 -*-
# Copyright (C) 2017-2020 Team tiramisu (see AUTHORS for all contributors)
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation, either version 3 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# The original `Config` design model is unproudly borrowed from
# the rough pypy's guys: http://codespeak.net/svn/pypy/dist/pypy/config/
# the whole pypy projet is under MIT licence
# ____________________________________________________________
import re
from typing import Any, Optional, List, Dict

from ..setting import undefined, Undefined, OptionBag
from ..i18n import _
from .option import Option, Calculation
from .stroption import StrOption
from .domainnameoption import DomainnameOption
from .portoption import PortOption


class URLOption(StrOption):
    __slots__ = tuple()
    path_re = re.compile(r"^[A-Za-z0-9\-\._~:/\?#\[\]@!%\$&\'\(\)\*\+,;=]+$")
    _type = 'url'
    _display_name = _('URL')

    def __init__(self,
                 name: str,
                 doc: str,
                 default: Any=undefined,
                 default_multi: Any=None,
                 multi: bool=False,
                 validators: Optional[List[Calculation]]=None,
                 properties: Optional[List[str]]=None,
                 warnings_only: bool=False,
                 extra: Optional[Dict]=None,
                 allow_ip: bool=False,
                 type: str='domainname',
                 allow_without_dot=False,
                 allow_range: bool=False,
                 allow_zero: bool=False,
                 allow_wellknown: bool=True,
                 allow_registred: bool=True,
                 allow_private: bool=False) -> None:

        
        extra = {'_domainname': DomainnameOption(name,
                                                 doc,
                                                 allow_ip=allow_ip,
                                                 type=type,
                                                 allow_without_dot=allow_without_dot),
                 '_port': PortOption(name,
                                     doc,
                                     allow_range=allow_range,
                                     allow_zero=allow_zero,
                                     allow_wellknown=allow_wellknown,
                                     allow_registred=allow_registred,
                                     allow_private=allow_private)}
        super().__init__(name,
                         doc,
                         default=default,
                         default_multi=default_multi,
                         multi=multi,
                         validators=validators,
                         properties=properties,
                         warnings_only=warnings_only,
                         extra=extra)

    def _get_domain_port_files(self,
                               value: str) -> (str, str):
        if value.startswith('http://'):
            type = 'http'
            value = value[7:]
        elif value.startswith('https://'):
            type = 'https'
            value = value[8:]
        else:
            raise ValueError(_('must start with http:// or '
                                'https://'))
        # get domain/files
        splitted = value.split('/', 1)
        if len(splitted) == 1:
            domain = value
            files = None
        else:
            domain, files = splitted
        # if port in domain
        splitted = domain.split(':', 1)
        if len(splitted) == 1:
            domain = splitted[0]
            port = {'http': '80',
                    'https': '443'}[type]
        else:
            domain, port = splitted
        return domain, port, files

    def validate(self,
                 value: str) -> None:
        super().validate(value)
        domain, port, files = self._get_domain_port_files(value)
        # validate port
        portoption = self.impl_get_extra('_port')
        portoption.validate(port)
        # validate domainname
        domainnameoption = self.impl_get_extra('_domainname')
        domainnameoption.validate(domain)
        # validate files
        if files is not None and files != '' and not self.path_re.search(files):
            raise ValueError(_('must ends with a valid resource name'))

    def second_level_validation(self, value, warnings_only):
        domain, port, files = self._get_domain_port_files(value)
        # validate port
        portoption = self.impl_get_extra('_port')
        portoption.second_level_validation(port, warnings_only)
        # validate domainname
        domainnameoption = self.impl_get_extra('_domainname')
        domainnameoption.second_level_validation(domain, warnings_only)