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):
    region = str(cfg.get("region") or "US").strip().upper()
    return "https://api.eu.opsgenie.com" if region == "EU" else "https://api.opsgenie.com"


def request(method, path, cfg, body=None, params=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": "GenieKey " + 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):
    message = str(inputs.get("message") or "").strip()
    if not message:
        raise Exception("message is required")

    description = str(inputs.get("description") or "").strip()
    priority = str(inputs.get("priority") or "P3").strip() or "P3"
    alias = str(inputs.get("alias") or "").strip()
    tags = [s.strip() for s in str(inputs.get("tags") or "").split(",") if s.strip()]
    responders = [s.strip() for s in str(inputs.get("responders") or "").split(",") if s.strip()]

    body = {"message": message, "priority": priority}
    if description:
        body["description"] = description
    if alias:
        body["alias"] = alias
    if tags:
        body["tags"] = tags
    if responders:
        body["responders"] = [{"type": "team", "name": t} for t in responders]

    return request("POST", "/v2/alerts", cfg, body=body)


_run(main)
