#  pylint: disable=too-few-public-methods

import builtins
from datetime import datetime, timedelta
from typing import Dict, List, Union, Optional

from flask import current_app
from pydantic import BaseModel, Field
from sqlalchemy import or_
from tldextract import extract

from app.extensions import db
from app.models.base import Group, Pool
from app.models.mirrors import Proxy


class MMMirror(BaseModel):
    origin_domain: str = Field(description="The full origin domain name")
    origin_domain_normalized: str = Field(description="The origin_domain with \"www.\" removed, if present")
    origin_domain_root: str = Field(description="The registered domain name of the origin, excluding subdomains")
    valid_from: str = Field(description="The date on which the mirror was added to the system")
    valid_to: Optional[str] = Field(description="The date on which the mirror was decommissioned")
    countries: Dict[str, int] = Field(description="A list mapping of risk levels to country")
    country: Optional[str] = Field(
        description="The country code of the country with the highest risk level where the origin is targeted")
    risk: int = Field(description="The risk score for the highest risk country")


class MirrorMapping(BaseModel):
    version: str = Field(
        description="Version number of the mirror mapping schema in use"
    )
    mappings: Dict[str, MMMirror] = Field(
        description="The domain name for the mirror"
    )
    s3_buckets: List[str] = Field(
        description="The names of all S3 buckets used for CloudFront logs"
    )

    class Config:
        title = "Mirror Mapping Version 1.2"


def mirror_mapping(_: Optional[Pool]) -> Dict[str, Union[str, Dict[str, str]]]:
    one_week_ago = datetime.utcnow() - timedelta(days=7)

    proxies = (
        db.session.query(Proxy)  # type: ignore[no-untyped-call]
        .filter(or_(Proxy.destroyed.is_(None), Proxy.destroyed > one_week_ago))
        .filter(Proxy.url.is_not(None))
        .all()
    )

    result = {}
    for proxy in proxies:
        if proxy.origin.countries:  # Check if there are any associated countries
            risk_levels = proxy.origin.risk_level.items()
            highest_risk_country = max(risk_levels, key=lambda x: x[1])
            highest_risk_country_code = highest_risk_country[0]
            highest_risk_level = highest_risk_country[1]
        else:
            highest_risk_country_code = "ZZ"
            highest_risk_level = 0

        result[proxy.url.lstrip("https://")] = MMMirror(
            origin_domain=proxy.origin.domain_name,
            origin_domain_normalized=proxy.origin.domain_name.replace("www.", ""),
            origin_domain_root=extract(proxy.origin.domain_name).registered_domain,
            valid_from=proxy.added.isoformat(),
            valid_to=proxy.destroyed.isoformat() if proxy.destroyed is not None else None,
            countries=proxy.origin.risk_level,
            country=highest_risk_country_code,
            risk=highest_risk_level
        )

    return MirrorMapping(
        version="1.2",
        mappings=result,
        s3_buckets=[
            f"{current_app.config['GLOBAL_NAMESPACE']}-{g.group_name.lower()}-logs-cloudfront"
            for g in Group.query.filter(Group.destroyed.is_(None)).all()
        ]
    ).dict()


if getattr(builtins, "__sphinx_build__", False):
    schema = MirrorMapping.schema_json()