import json, os, sys, base64, 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 _auth_url(cfg):
    return (str(cfg.get("auth_url") or "https://auth.pingone.com")).rstrip("/")


def _api_base(cfg):
    return (str(cfg.get("api_url") or "https://api.pingone.com")).rstrip("/") + "/v1/environments/" + str(cfg.get("environment_id", ""))


def _token(cfg):
    basic = base64.b64encode((str(cfg.get("client_id", "")) + ":" + str(cfg.get("client_secret", ""))).encode("utf-8")).decode("utf-8")
    form = urllib.parse.urlencode({"grant_type": "client_credentials"}).encode("utf-8")
    url = _auth_url(cfg) + "/" + str(cfg.get("environment_id", "")) + "/as/token"
    req = urllib.request.Request(url, data=form, headers={
        "Authorization": "Basic " + basic,
        "Content-Type": "application/x-www-form-urlencoded",
        "Accept": "application/json",
    }, method="POST")
    with urllib.request.urlopen(req, timeout=60) as r:
        tok = json.loads(r.read())
    if not tok.get("access_token"):
        raise Exception("Token request failed: " + json.dumps(tok))
    return tok["access_token"]


def request(method, path, cfg, token, body=None, params=None, content_type="application/json"):
    url = _api_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 " + token, "Accept": "application/json"}
    if data is not None:
        headers["Content-Type"] = content_type
    req = urllib.request.Request(url, data=data, headers=headers, method=method)
    with urllib.request.urlopen(req, timeout=60) as r:
        raw = r.read()
        return json.loads(raw) if raw else {}


def _run(fn):
    try:
        cfg = _cfg()
        inputs = _inputs()
        token = _token(cfg)
        print(json.dumps(fn(cfg, token, 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, token, inputs):
    request("GET", "/users", cfg, token, params={"limit": 1})
    return {"ok": True}


_run(main)