# SPDX-License-Identifier: GPL-3.0-or-later

# Haketilo proxy data and configuration.
#
# This file is part of Hydrilla&Haketilo.
#
# Copyright (C) 2022 Wojtek Kosior
#
# 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 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
#
# I, Wojtek Kosior, thereby promise not to sue for violation of this
# file's license. Although I request that you do not make use this code
# in a proprietary program, I am not going to enforce this in court.

"""
This module contains logic for keeping track of all settings, rules, mappings
and resources.
"""

# Enable using with Python 3.7.
from __future__ import annotations

import typing as t
import dataclasses as dc

from threading import Lock
from pathlib import Path

from ..pattern_tree import PatternTree
from .store import HaketiloStore
from . import policies

def make_pattern_tree_with_builtin_policies() -> PatternTree[policies.Policy]:
    """...."""
    # TODO: implement
    return PatternTree()

tree_field = dc.field(default_factory=make_pattern_tree_with_builtin_policies)

@dc.dataclass
class HaketiloState(HaketiloStore):
    """...."""
    pattern_tree:  PatternTree[policies.Policy] = tree_field
    default_allow: bool                         = False

    state_lock:    Lock                         = dc.field(default_factory=Lock)

    def select_policy(self, url: str, allow_disabled=False) -> policies.Policy:
        """...."""
        with self.state_lock:
            pattern_tree = self.pattern_tree

        try:
            for policy_set in pattern_tree.search(url):
                # if policy.enabled or allow_disabled:
                #     return policy
                pass

            return policies.FallbackBlockPolicy()
        except Exception as e:
            return policies.ErrorBlockPolicy(e)