export function quotaPercent(value) {
  const percent = Number(value);
  if (!Number.isFinite(percent)) {
    return null;
  }
  return Math.max(0, Math.min(100, percent));
}

export function quotaRemainingPercent(quotaWindow) {
  if (!quotaWindow || typeof quotaWindow !== 'object') {
    return null;
  }
  const display = quotaPercent(quotaWindow.displayPercent ?? quotaWindow.display_percent);
  if (display !== null) {
    return display;
  }
  const explicit = quotaPercent(quotaWindow.remainingPercent ?? quotaWindow.remaining_percent);
  if (explicit !== null) {
    return explicit;
  }
  const used = quotaPercent(quotaWindow.usedPercent ?? quotaWindow.used_percent);
  return used === null ? null : Math.max(0, Math.min(100, 100 - used));
}

export function formatQuotaPercent(quotaWindow) {
  const percent = quotaRemainingPercent(quotaWindow);
  return percent === null ? '--' : `${Math.round(percent)}%`;
}

export function quotaToneClass(percent) {
  if (percent === null) {
    return 'is-low';
  }
  if (percent >= 80) {
    return 'is-healthy';
  }
  if (percent >= 60) {
    return 'is-medium';
  }
  if (percent >= 40) {
    return 'is-warning';
  }
  return 'is-low';
}