/* EmptyState — shared empty / zero-data placeholder.
 *
 * Replaces the "No reports yet." centered text scattered across pages.
 * Renders a dashed-border panel with a lucide icon, headline, optional
 * description, and an optional CTA button.
 *
 * Use within Card content, table empty rows, or dialog bodies. */

import Link from 'next/link';
import type { LucideIcon } from 'lucide-react';
import { cn } from '@/lib/utils';
import { Button } from '@/components/ui/button';

interface EmptyStateAction {
  label: string;
  href?: string;
  onClick?: () => void;
}

interface EmptyStateProps {
  icon?: LucideIcon;
  title: string;
  description?: string;
  action?: EmptyStateAction;
  size?: 'sm' | 'md';
  className?: string;
}

export function EmptyState({
  icon: Icon,
  title,
  description,
  action,
  size = 'md',
  className,
}: EmptyStateProps) {
  const padding = size === 'sm' ? 'py-6 px-4' : 'py-10 px-6';
  const iconSize = size === 'sm' ? 'h-5 w-5' : 'h-6 w-6';

  const button = action ? (
    <Button asChild={!!action.href} variant="outline" size="sm" onClick={action.onClick}>
      {action.href ? <Link href={action.href}>{action.label}</Link> : <span>{action.label}</span>}
    </Button>
  ) : null;

  return (
    <div
      className={cn(
        'flex flex-col items-center justify-center text-center gap-2 rounded-md border border-dashed border-border/60',
        padding,
        className,
      )}
    >
      {Icon && (
        <span className="flex h-10 w-10 items-center justify-center rounded-md bg-muted text-muted-foreground">
          <Icon className={iconSize} />
        </span>
      )}
      <p className="text-sm font-medium text-foreground">{title}</p>
      {description && (
        <p className="text-sm text-muted-foreground max-w-prose">{description}</p>
      )}
      {button && <div className="mt-2">{button}</div>}
    </div>
  );
}