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",
    }
    ids = csv(inputs.get("alert_ids"))
    if ids:
        results = [request("GET", base + "/api/data/alert/alert/Alert/" + i + "/", headers) for i in ids]
        print(json.dumps({"count": len(results), "results": results}))
        return
    params = {
        "ordering": inputs.get("ordering") or "-alert_time",
        "limit": int(inputs.get("limit") or 100),
        "offset": int(inputs.get("offset") or 0),
        "search": inputs.get("search"),
        "agent.hostname": inputs.get("hostname"),
        "agent.agentid": inputs.get("agent_id"),
        "threat_key": inputs.get("threat_id"),
        "rule_name": inputs.get("rule_name"),
        "level": ",".join(csv(inputs.get("level"))) or None,
        "status": ",".join(csv(inputs.get("status"))) or None,
        "alert_type": ",".join(csv(inputs.get("alert_type"))) or None,
        "alert_time__gte": inputs.get("from_date"),
        "alert_time__lte": inputs.get("to_date"),
    }
    print(json.dumps(request("GET", base + "/api/data/alert/alert/Alert/" + qs(params), headers)))


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)