from enum import Enum
import logging

logger = logging.getLogger(__name__)


class ZoomErrorKind(str, Enum):
    AUTH = "auth"
    RATE_LIMITED = "rate_limited"
    TRANSIENT = "transient"
    PERMANENT = "permanent"
    NETWORK = "network"
    UNKNOWN = "unknown"


class ZoomError(Exception):
    def __init__(
        self,
        message: str,
        kind: ZoomErrorKind = ZoomErrorKind.UNKNOWN,
        status_code: int | None = None,
        retry_after: int | None = None,
    ):
        super().__init__(message)
        self.kind = kind
        self.status_code = status_code
        self.retry_after = retry_after


def classify_http_status(status_code: int) -> ZoomErrorKind:
    if status_code == 401:
        return ZoomErrorKind.AUTH
    if status_code == 429:
        return ZoomErrorKind.RATE_LIMITED
    if status_code in (500, 502, 503, 504):
        return ZoomErrorKind.TRANSIENT
    if 400 <= status_code < 500:
        return ZoomErrorKind.PERMANENT
    return ZoomErrorKind.UNKNOWN


def is_retryable(kind: ZoomErrorKind) -> bool:
    return kind in (ZoomErrorKind.RATE_LIMITED, ZoomErrorKind.TRANSIENT, ZoomErrorKind.NETWORK)


def retry_delay_ms(attempt: int, base_ms: int = 1000, max_ms: int = 30000) -> int:
    return min(base_ms * (2**attempt), max_ms)


MAX_RETRIES = 3