export function formatDate(timestamp: number): string {
  return new Date(timestamp).toLocaleString();
}

export function formatDuration(ms: number): string {
  if (ms < 1000) return `${ms}ms`;
  if (ms < 60000) return `${(ms / 1000).toFixed(1)}s`;
  if (ms < 3600000) return `${(ms / 60000).toFixed(1)}m`;
  return `${(ms / 3600000).toFixed(1)}h`;
}

export function formatRelativeTime(ts?: number): string {
  if (!ts) return '-';
  const diff = Date.now() - ts;
  const abs = Math.abs(diff);
  if (abs < 60_000) return `${Math.round(abs / 1000)}s ago`;
  if (abs < 3_600_000) return `${Math.round(abs / 60_000)}m ago`;
  if (abs < 86_400_000) return `${Math.round(abs / 3_600_000)}h ago`;
  return `${Math.round(abs / 86_400_000)}d ago`;
}

export function getCategoryIcon(category: string): string {
  switch (category) {
    case 'maintenance':
      return 'lucide:Wrench';
    case 'deployment':
      return 'lucide:Rocket';
    case 'backup':
      return 'lucide:Archive';
    case 'monitoring':
      return 'lucide:Activity';
    case 'cleanup':
      return 'lucide:Trash2';
    case 'system':
      return 'lucide:Settings';
    case 'security':
      return 'lucide:Shield';
    default:
      return 'lucide:Play';
  }
}

export function getCategoryHue(category: string): number {
  switch (category) {
    case 'maintenance': return 28;    // orange
    case 'deployment': return 208;    // blue
    case 'backup': return 122;        // green
    case 'monitoring': return 280;    // purple
    case 'cleanup': return 20;        // brownish
    case 'system': return 200;        // steel
    case 'security': return 0;        // red
    default: return 210;              // default blue
  }
}

export function formatCronFriendly(cron?: string): string {
  if (!cron) return '';
  const parts = cron.trim().split(/\s+/);
  if (parts.length !== 5) return cron; // fallback
  const [min, hour, dom, mon, dow] = parts;
  if (min === '*/1' && hour === '*' && dom === '*' && mon === '*' && dow === '*') return 'every minute';
  if (min.startsWith('*/') && hour === '*' && dom === '*' && mon === '*' && dow === '*') return `every ${min.replace('*/','')} min`;
  if (min === '0' && hour.startsWith('*/') && dom === '*' && mon === '*' && dow === '*') return `every ${hour.replace('*/','')} hours`;
  if (min === '0' && hour === '*' && dom === '*' && mon === '*' && dow === '*') return 'hourly';
  if (min === '0' && hour === '0' && dom === '*' && mon === '*' && dow === '*') return 'daily';
  if (min === '0' && hour === '0' && dom === '1' && mon === '*' && dow === '*') return 'monthly';
  return cron;
}