import json, os, sys, ssl, http.cookiejar
import 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 _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


class Client:
    def __init__(self, cfg):
        self.cfg = cfg
        self.base = str(cfg.get("base_url", "")).rstrip("/") + "/BeyondTrust/api/public/v3"
        ctx = _ctx(cfg)
        self.opener = urllib.request.build_opener(
            urllib.request.HTTPCookieProcessor(http.cookiejar.CookieJar()),
            urllib.request.HTTPSHandler(context=ctx) if ctx else urllib.request.HTTPSHandler(),
        )

    def _auth_header(self):
        return "PS-Auth key=" + str(self.cfg.get("api_key", "")) + "; runas=" + str(self.cfg.get("runas_user", "")) + ";"

    def signin(self):
        req = urllib.request.Request(self.base + "/Auth/SignAppin", data=b"",
                                     headers={"Authorization": self._auth_header(), "Accept": "application/json"}, method="POST")
        with self.opener.open(req, timeout=60) as r:
            raw = r.read()
            return json.loads(raw) if raw else {}

    def call(self, method, path, body=None, params=None):
        url = self.base + 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 = {"Accept": "application/json", "Authorization": self._auth_header()}
        if data is not None:
            headers["Content-Type"] = "application/json"
        req = urllib.request.Request(url, data=data, headers=headers, method=method)
        with self.opener.open(req, timeout=60) as r:
            raw = r.read()
            return json.loads(raw) if raw else {}

    def signout(self):
        try:
            req = urllib.request.Request(self.base + "/Auth/Signout", data=b"", method="POST")
            self.opener.open(req, timeout=30).read()
        except Exception:
            pass


def _run(fn):
    try:
        cfg = _cfg()
        inputs = _inputs()
        client = Client(cfg)
        client.signin()
        try:
            result = fn(client, inputs)
        finally:
            client.signout()
        print(json.dumps(result))
    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(client, inputs):
    system_id = inputs.get("system_id")
    account_id = inputs.get("account_id")
    duration_minutes = inputs.get("duration_minutes")
    reason = inputs.get("reason")
    if not system_id:
        raise Exception("system_id is required")
    if not account_id:
        raise Exception("account_id is required")
    body = {
        "SystemId": int(system_id),
        "AccountId": int(account_id),
        "DurationMinutes": int(duration_minutes) if duration_minutes else 30,
        "Reason": reason or "Riposte SOAR",
        "AccessType": "View",
    }
    return client.call("POST", "/Requests", body=body)


_run(main)