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


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


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


def _base(cfg):
    return (str(cfg.get("base_url") or "https://api.xdr.trendmicro.com")).rstrip("/")


def request(method, path, cfg, body=None, params=None, extra_headers=None):
    url = _base(cfg) + path
    if params:
        clean = {k: v for k, v in params.items() if v not in (None, "")}
        if clean:
            url += "?" + urllib.parse.urlencode(clean)
    data = json.dumps(body).encode("utf-8") if body is not None else None
    headers = {"Authorization": "Bearer " + str(cfg.get("api_token", "")), "Accept": "application/json"}
    if data is not None:
        headers["Content-Type"] = "application/json"
    if extra_headers:
        headers.update(extra_headers)
    req = urllib.request.Request(url, data=data, headers=headers, method=method)
    with urllib.request.urlopen(req, timeout=90) as r:
        raw = r.read()
        return json.loads(raw) if raw else {}


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)


_VALID_OBJECT_TYPES = {"fileSha1", "url", "ip", "domain", "senderMailAddress"}


def main(cfg, inputs):
    object_type = inputs.get("object_type")
    object_value = inputs.get("object_value")
    description = inputs.get("description")
    if not object_type:
        raise Exception("object_type is required")
    if not object_value:
        raise Exception("object_value is required")
    if object_type not in _VALID_OBJECT_TYPES:
        raise Exception(
            "object_type must be one of: " + ", ".join(sorted(_VALID_OBJECT_TYPES))
        )
    entry = {object_type: object_value, "description": description or "Added via Riposte"}
    return request("POST", "/v3.0/threatintel/suspiciousObjects", cfg, body=[entry])


_run(main)
