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 request(method, path, cfg, body=None):
    url = str(cfg.get("base_url", "")).rstrip("/") + path
    data = json.dumps(body).encode("utf-8") if body is not None else None
    headers = {"Authorization": "Bearer " + str(cfg.get("api_key", "")), "Accept": "application/json"}
    if data is not None:
        headers["Content-Type"] = "application/json"
    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:
        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)


def main(cfg, inputs):
    case_id = str(inputs.get("case_id", "")).strip()
    if not case_id:
        raise Exception("case_id is required")

    status = inputs.get("status")
    severity = inputs.get("severity")
    assignee = inputs.get("assignee")

    body = {}
    if status not in (None, ""):
        body["status"] = str(status).strip()
    if severity not in (None, ""):
        body["severity"] = int(severity)
    if assignee not in (None, ""):
        body["assignee"] = str(assignee).strip()

    if not body:
        raise Exception("at least one field to update is required")

    q = lambda v: urllib.parse.quote(str(v), safe="")
    resp = request("PATCH", "/api/v1/case/" + q(case_id), cfg, body)
    if not resp:
        return {"ok": True, "case_id": case_id}
    return resp


_run(main)
