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

BASE = "https://services.nvd.nist.gov/rest/json/cves/2.0"


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 _headers(cfg):
    h = {"User-Agent": "Riposte-SOAR", "Accept": "application/json"}
    k = cfg.get("api_key")
    if k:
        h["apiKey"] = str(k)
    return h


def _get(url, cfg):
    req = urllib.request.Request(url, headers=_headers(cfg))
    with urllib.request.urlopen(req, timeout=60, 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):
    url = BASE + "?" + urllib.parse.urlencode({"resultsPerPage": 1})
    raw = _get(url, cfg)
    data = json.loads(raw) if raw else {}
    return {"ok": True, "total_results": data.get("totalResults")}


_run(main)