import socket
from typing import Union, NoReturn

import ipinfo
import ipwhois
import pydig
from ipinfo.exceptions import RequestQuotaExceededError

from ipwhois import Net
from ipwhois.asn import IPASN

from tuxbot.cogs.Network.functions.exceptions import VersionNotFound, RFC18


def _(x):
    return x


async def get_ip(ip: str, inet: str = "") -> str:
    if inet == "6":
        inet = socket.AF_INET6
    elif inet == "4":
        inet = socket.AF_INET
    else:
        inet = 0

    try:
        return socket.getaddrinfo(str(ip), None, inet)[1][4][0]
    except socket.gaierror as e:
        raise VersionNotFound(
            _(
                "Impossible to collect information on this in the given "
                "version",
            )
        ) from e


def get_hostname(ip: str) -> str:
    try:
        return socket.gethostbyaddr(ip)[0]
    except socket.herror:
        return "N/A"


def get_ipwhois_result(ip_address: str) -> Union[NoReturn, dict]:
    try:
        net = Net(ip_address)
        obj = IPASN(net)
        return obj.lookup()
    except ipwhois.exceptions.ASNRegistryError:
        return {}
    except ipwhois.exceptions.IPDefinedError as e:
        raise RFC18(
            _(
                "IP address {ip_address} is already defined as Private-Use"
                " Networks via RFC 1918."
            )
        ) from e


async def get_ipinfo_result(
    apikey: str, ip_address: str
) -> Union[NoReturn, dict]:
    try:
        handler = ipinfo.getHandlerAsync(apikey)
        return (await handler.getDetails(ip_address)).all
    except RequestQuotaExceededError:
        return {}


def merge_ipinfo_ipwhois(ipinfo_result: dict, ipwhois_result: dict) -> dict:
    output = {"belongs": "N/A", "rir": "N/A", "region": "N/A", "flag": "N/A"}

    if ipinfo_result:
        org = ipinfo_result.get("org", "N/A")
        asn = org.split()[0] if len(org.split()) > 1 else "N/A"

        output["belongs"] = f"[{org}](https://bgp.he.net/{asn})"
        output["rir"] = f"```{ipwhois_result.get('asn_registry', 'N/A')}```"
        output["region"] = (
            f"```{ipinfo_result.get('city', 'N/A')} - "
            f"{ipinfo_result.get('region', 'N/A')} "
            f"({ipinfo_result.get('country', 'N/A')})```"
        )
        output["flag"] = (
            f"https://www.countryflags.io/{ipinfo_result['country']}"
            f"/shiny/64.png"
        )
    elif ipwhois_result:
        org = ipwhois_result.get("asn_description", "N/A")
        asn = ipwhois_result.get("asn", "N/A")
        asn_country = ipwhois_result.get("asn_country_code", "N/A")

        output["belongs"] = f"{org} ([AS{asn}](https://bgp.he.net/{asn}))"
        output["rir"] = f"```{ipwhois_result['asn_registry']}```"
        output["region"] = f"```{asn_country}```"
        output[
            "flag"
        ] = f"https://www.countryflags.io/{asn_country}/shiny/64.png"

    return output


def get_pydig_result(
    domain: str, query_type: str, dnssec: Union[str, bool]
) -> list:
    additional_args = [] if dnssec is False else ["+dnssec"]

    resolver = pydig.Resolver(
        nameservers=[
            "80.67.169.40",
            "80.67.169.12",
        ],
        additional_args=additional_args,
    )

    return resolver.query(domain, query_type)