import json, os, sys, ssl, urllib.request, urllib.error

LISTS = {
    "compromised": "https://rules.emergingthreats.net/blockrules/compromised-ips.txt",
    "block": "https://rules.emergingthreats.net/fwrules/emerging-Block-IPs.txt",
}


def _cfg():
    return json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))


def _inputs():
    return json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))


def _ctx(cfg):
    if cfg.get("insecure"):
        c = ssl.create_default_context()
        c.check_hostname = False
        c.verify_mode = ssl.CERT_NONE
        return c
    return None


def _get(url, cfg):
    req = urllib.request.Request(url, headers={"User-Agent": "Riposte-SOAR"})
    with urllib.request.urlopen(req, timeout=120, context=_ctx(cfg)) as r:
        return r.read()


def _run(fn):
    try:
        print(json.dumps(fn(_cfg(), _inputs())))
    except urllib.error.HTTPError as e:
        print(json.dumps({"error": "HTTP " + str(e.code), "detail": e.read().decode("utf-8", "replace")}))
        sys.exit(1)
    except Exception as e:
        print(json.dumps({"error": str(e)}))
        sys.exit(1)


def main(cfg, inputs):
    key = str(inputs.get("list") or cfg.get("list") or "compromised").lower()
    url = LISTS.get(key, LISTS["compromised"])
    raw = _get(url, cfg).decode("utf-8", "replace")

    maxn = int(inputs.get("max_indicators") or 0)
    out = []
    for line in raw.splitlines():
        line = line.strip()
        if not line or line.startswith("#"):
            continue
        typ = "cidr" if "/" in line else "ip"
        out.append({"value": line, "type": typ, "list": key})
        if maxn and len(out) >= maxn:
            break

    return {"source": "emergingthreats:" + key, "count": len(out), "indicators": out}


_run(main)