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


def request(method, url, headers, body=None):
    data = json.dumps(body).encode("utf-8") if body is not None else None
    req = urllib.request.Request(url, data=data, headers=headers, method=method)
    with urllib.request.urlopen(req, timeout=60) as resp:
        raw = resp.read()
        return json.loads(raw) if raw else {}


def qs(params):
    clean = {}
    for k, v in params.items():
        if v is None or v == "" or v == []:
            continue
        if isinstance(v, bool):
            v = "true" if v else "false"
        clean[k] = v
    return ("?" + urllib.parse.urlencode(clean)) if clean else ""


def csv(v):
    return [x.strip() for x in str(v or "").split(",") if x.strip()]


def main():
    secrets = json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
    inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
    base = secrets.get("url", "").rstrip("/")
    headers = {
        "Authorization": "Token " + secrets.get("api_token", ""),
        "Accept": "application/json",
        "Content-Type": "application/json",
    }
    source_name = inputs.get("source_name")
    ioc_value = inputs.get("ioc_value")
    ioc_type = inputs.get("ioc_type")
    ioc_status = inputs.get("ioc_status")

    sources = request("GET", base + "/api/data/threat_intelligence/IOCSource/" + qs({"search": source_name}), headers)
    sid = None
    for s in sources.get("results", []):
        if s.get("name") == source_name:
            sid = s.get("id")

    existing = request("GET", base + "/api/data/threat_intelligence/IOCRule/" + qs({"source_id": sid, "search": ioc_value}), headers)
    if existing.get("count", 0) > 0:
        print(json.dumps({"message": "IOC " + str(ioc_value) + " already exists in source " + str(source_name)}))
        return

    testing_status = "in_progress" if ioc_status == "testing" else None
    body = {
        "type": ioc_type,
        "value": ioc_value,
        "comment": inputs.get("ioc_comment", ""),
        "source_id": sid,
        "hl_status": ioc_status,
        "hl_local_testing_status": testing_status,
    }
    out = request("POST", base + "/api/data/threat_intelligence/IOCRule/", headers, body)
    print(json.dumps(out))


try:
    main()
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)
