from __future__ import annotations

from typing import ClassVar

from .exceptions import *
from .rpc_error import UnknownError


class BadMsgNotification(Exception):
    descriptions: ClassVar = {
        16: "The msg_id is too low, the client time has to be synchronized.",
        17: "The msg_id is too high, the client time has to be synchronized.",
        18: "Incorrect two lower order of the msg_id bits, the server expects the client message "
        "msg_id to be divisible by 4.",
        19: "The container msg_id is the same as the msg_id of a previously received message.",
        20: "The message is too old, it cannot be verified by the server.",
        32: "The msg_seqno is too low.",
        33: "The msg_seqno is too high.",
        34: "An even msg_seqno was expected, but an odd one was received.",
        35: "An odd msg_seqno was expected, but an even one was received.",
        48: "Incorrect server salt.",
        64: "Invalid container.",
    }

    def __init__(self, code) -> None:
        description = self.descriptions.get(code, "Unknown error code")
        super().__init__(f"[{code}] {description}")


class SecurityError(Exception):
    """Generic security error."""

    @classmethod
    def check(cls, cond: bool, msg: str) -> None:
        """Raises this exception if the condition is false"""
        if not cond:
            raise cls(f"Check failed: {msg}")


class SecurityCheckMismatch(SecurityError):
    """Raised when a security check mismatch occurs."""

    def __init__(self, msg: str | None = None) -> None:
        super().__init__(
            "A security check mismatch has occurred." if msg is None else msg,
        )


class CDNFileHashMismatch(SecurityError):
    """Raised when a CDN file hash mismatch occurs."""

    def __init__(self, msg: str | None = None) -> None:
        super().__init__(
            "A CDN file hash mismatch has occurred." if msg is None else msg,
        )


__all__ = ["UnknownError"]
