from collections import namedtuple
from dataclasses import dataclass


@dataclass
class Options:
    # TODO: move this out of Options, since it's really not.
    execution: object = None

    ip_simul: int = 30  # how many IPs to connect to at once
    domain_simul: int = 3  # how many domains per IP to request at once
    packets_per_second: int = 50  # rough limit on all outgoing DNS packets

    ip_wait: float = 0.05
    domain_wait: float = 0.25

    impatient: bool = False  # reduce retries and times for timeouts
    early_stopping: bool = True  # stop at the first invalid domain
    dry: bool = True  # don't write anything to database
    progress: bool = False  # periodically print progress to stderr
    blocking_file_io: bool = False  # halt execution until inputs arrive


@dataclass
class Entry:
    from datetime import datetime

    date: datetime
    success: bool
    server: str
    kind: str
    domain: str
    exception: str
    addrs: list  # list of strings
    reason: str
    execution: object


Check = namedtuple("Check", ("kind", "domain", "failures"))