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"""
The tool to check the availability or syntax of domain, IP or URL.
::
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╚═╝ ╚═╝ ╚═╝ ╚═════╝ ╚═╝ ╚═══╝ ╚═════╝╚══════╝╚═════╝ ╚══════╝╚══════╝
Provides the general domain syntax checker.
Author:
Nissar Chababy, @funilrys, contactTATAfunilrysTODTODcom
Special thanks:
https://pyfunceble.github.io/#/special-thanks
Contributors:
https://pyfunceble.github.io/#/contributors
Project link:
https://github.com/funilrys/PyFunceble
Project documentation:
https://docs.pyfunceble.com
Project homepage:
https://pyfunceble.github.io/
License:
::
Copyright 2017, 2018, 2019, 2020, 2022, 2023, 2024, 2025 Nissar Chababy
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
from typing import Optional
from sqlalchemy.orm import Session
from PyFunceble.checker.syntax.base import SyntaxCheckerBase
from PyFunceble.checker.syntax.domain_base import DomainSyntaxCheckerBase
from PyFunceble.checker.syntax.params import SyntaxCheckerParams
from PyFunceble.checker.syntax.second_lvl_domain import SecondLvlDomainSyntaxChecker
from PyFunceble.checker.syntax.status import SyntaxCheckerStatus
from PyFunceble.checker.syntax.subdomain import SubDomainSyntaxChecker
class DomainSyntaxChecker(DomainSyntaxCheckerBase, SyntaxCheckerBase):
"""
Provides an interface to check the syntax of a domain.
:param str subject:
Optional, The subject to work with.
"""
second_level_checker: Optional[SecondLvlDomainSyntaxChecker] = None
subdomain_checker: Optional[SubDomainSyntaxChecker] = None
def __init__(
self, subject: Optional[str] = None, db_session: Optional[Session] = None
) -> None:
self.second_level_checker: SecondLvlDomainSyntaxChecker = (
SecondLvlDomainSyntaxChecker()
)
self.subdomain_checker: SubDomainSyntaxChecker = SubDomainSyntaxChecker()
self.db_session = db_session
super().__init__(subject)
def subject_propagator(self) -> "DomainSyntaxChecker":
"""
Propagate the currently set subject.
.. warning::
You are not invited to run this method directly.
"""
self.second_level_checker.subject = self.idna_subject
self.subdomain_checker.subject = self.idna_subject
self.status = SyntaxCheckerStatus()
self.params = SyntaxCheckerParams()
self.status.params = self.params
self.status.subject_kind = "domain"
return super().subject_propagator()
@DomainSyntaxCheckerBase.ensure_subject_is_given
def is_valid(self) -> bool:
"""
Validate the given subject if exists.
"""
return self.is_valid_second_level() or self.is_valid_subdomain()
@DomainSyntaxCheckerBase.ensure_subject_is_given
def is_valid_second_level(self) -> bool:
"""
Checks if the given subject is a valid second level demain.
"""
return self.second_level_checker.is_valid()
@DomainSyntaxCheckerBase.ensure_subject_is_given
def is_valid_subdomain(self) -> bool:
"""
Checks if the given subject is a valid subdomain
"""
return self.subdomain_checker.is_valid()
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