export const name = "Google Workspace";
export const url = "https://workspace.google.com/status/";

const INCIDENTS_URL =
  "https://www.google.com/appsstatus/dashboard/incidents.json";

// status_impact → dashboard status
const STATUS_MAP = {
  SERVICE_OUTAGE: "outage",
  SERVICE_DISRUPTION: "degraded",
};

const IMPACT_LABEL = {
  SERVICE_OUTAGE: "outage",
  SERVICE_DISRUPTION: "service disruption",
};

const SEVERITY_ORDER = ["operational", "degraded", "outage"];

function worstStatus(a, b) {
  return SEVERITY_ORDER.indexOf(a) >= SEVERITY_ORDER.indexOf(b) ? a : b;
}

export async function checkStatus() {
  const res = await fetch(INCIDENTS_URL);

  if (!res.ok) {
    throw new Error(`Google Workspace status request failed (${res.status})`);
  }

  const incidents = await res.json();

  // Active incidents have no end timestamp
  const active = incidents.filter((i) => !i.end);

  if (active.length === 0) {
    return {
      name,
      status: "operational",
      message: "All services operating normally.",
      lastUpdated: new Date().toISOString(),
    };
  }

  let overall = "operational";
  const descriptions = [];

  for (const incident of active) {
    const mapped = STATUS_MAP[incident.status_impact] ?? "degraded";
    overall = worstStatus(overall, mapped);

    const services = (incident.affected_products ?? [])
      .map((p) => p.title)
      .join(", ");
    const label = services || incident.service_name || "Unknown service";
    const impact = IMPACT_LABEL[incident.status_impact] ?? "incident";
    descriptions.push(`${label}: ${impact}`);
  }

  return {
    name,
    status: overall,
    message: descriptions.join(" | "),
    lastUpdated: new Date().toISOString(),
  };
}