# mautrix-instagram - A Matrix-Instagram puppeting bridge.
# Copyright (C) 2020 Tulir Asokan
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
from typing import Optional
from uuid import UUID
import random
import time

from mautrix.types import SerializableAttrs, field, dataclass

from ..errors import IGNoCheckpointError, IGCookieNotFoundError
from .device import AndroidDevice
from .session import AndroidSession
from .application import AndroidApplication
from .cookies import Cookies


@dataclass
class AndroidState(SerializableAttrs['AndroidState']):
    device: AndroidDevice = field(factory=lambda: AndroidDevice())
    session: AndroidSession = field(factory=lambda: AndroidSession())
    application: AndroidApplication = field(factory=lambda: AndroidApplication())
    # experiments: AndroidExperiments
    client_session_id_lifetime: int = 1_200_000
    pigeon_session_id_lifetime: int = 1_200_000
    challenge: 'Optional[ChallengeStateResponse]' = None
    _challenge_path: Optional[str] = field(default=None, json="challenge_path")
    cookies: Cookies = field(factory=lambda: Cookies())

    @property
    def client_session_id(self) -> str:
        return str(self._gen_temp_uuid("clientSessionId", self.client_session_id_lifetime))

    @property
    def pigeon_session_id(self) -> str:
        return str(self._gen_temp_uuid("pigeonSessionId", self.pigeon_session_id_lifetime))

    @property
    def user_agent(self) -> str:
        return (f"Instagram {self.application.APP_VERSION} Android ({self.device.descriptor}; "
                f"{self.device.language}; {self.application.APP_VERSION_CODE})")

    @property
    def user_id(self) -> str:
        try:
            return self.cookies.user_id
        except IGCookieNotFoundError:
            if not self.challenge or not self.challenge.user_id:
                raise IGUserIDNotFoundError()
            return str(self.challenge.user_id)

    @property
    def challenge_path(self) -> str:
        if not self._challenge_path:
            raise IGNoCheckpointError()
        return self._challenge_path

    def _gen_temp_uuid(self, seed: str, lifetime: int) -> UUID:
        rand = random.Random(f"{seed}{self.device.id}{round(time.time() * 1000 / lifetime)}")
        return UUID(int=rand.getrandbits(128), version=4)