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

# Notes on a unified alert are their own mutation — write_threat_note covers the
# REST threat object, which is a different record from a UAM alert.
MUTATION = """mutation AddNote($alertId: ID!, $text: String!) {
  addAlertNote(alertId: $alertId, text: $text) {
    data { id text createdAt author { userId fullName } }
  }
}"""


def request(method, url, headers, body=None):
    data = json.dumps(body).encode("utf-8") if body is not None else None
    req = urllib.request.Request(url, data=data, headers=headers, method=method)
    with urllib.request.urlopen(req, timeout=30) as resp:
        raw = resp.read()
        return json.loads(raw) if raw else {}


def main():
    secrets = json.loads(os.environ.get("INTEGRATION_SECRETS", "{}"))
    inputs = json.loads(os.environ.get("INTEGRATION_INPUTS", "{}"))
    base = secrets.get("url", "").rstrip("/") + "/web/api/v2.1"
    headers = {
        "Authorization": "ApiToken " + secrets.get("api_token", ""),
        "Accept": "application/json",
        "Content-Type": "application/json",
    }
    alert_id = str(inputs.get("alert_id") or "").strip()
    text = str(inputs.get("note_text") or "")
    if not alert_id or not text.strip():
        raise ValueError("alert_id and note_text are required")

    body = {"query": MUTATION, "variables": {"alertId": alert_id, "text": text}}
    resp = request("POST", base + "/unifiedalerts/graphql", headers, body)
    # Without this the playbook would read a successful write on a note the
    # console refused.
    if resp.get("errors"):
        print(json.dumps({"error": "GraphQL error", "detail": resp["errors"]}))
        sys.exit(1)
    print(json.dumps((resp.get("data") or {}).get("addAlertNote") or {}))


try:
    main()
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)