from __future__ import annotations

import logging
from typing import Any

import httpx

log = logging.getLogger(__name__)


def fetch_proxy_json(url: str, timeout: float = 45.0) -> list[dict[str, Any]]:
    log.debug("fetch_proxy_json: GET %s", (url[:100] + "…") if len(url) > 100 else url)
    with httpx.Client(timeout=timeout, follow_redirects=True) as c:
        r = c.get(url)
        r.raise_for_status()
        data = r.json()
    if not isinstance(data, list):
        return []
    return [x for x in data if isinstance(x, dict)]


def normalize_entries(rows: list[dict[str, Any]], prefer_elite: bool) -> list[str]:
    out: list[str] = []
    for row in rows:
        if prefer_elite and str(row.get("anonymity", "")).lower() != "elite":
            continue
        p = row.get("proxy")
        if isinstance(p, str) and "://" in p:
            out.append(p.strip())
    # de-dupe preserving order
    seen: set[str] = set()
    uniq: list[str] = []
    for u in out:
        if u not in seen:
            seen.add(u)
            uniq.append(u)
    return uniq