// components/ui/Badge.tsx
'use client';

import clsx from 'clsx';
import * as React from 'react';

type BadgeTone =
  | 'gray'
  | 'red'
  | 'yellow'
  | 'green'
  | 'blue'
  | 'indigo'
  | 'purple'
  | 'pink';

type BadgeVariant = 'border' | 'flat';
type BadgeShape = 'rounded' | 'pill';
type BadgeSize = 'sm' | 'md';

export type BadgeProps = {
  children: React.ReactNode;
  tone?: BadgeTone;
  variant?: BadgeVariant;
  shape?: BadgeShape;
  size?: BadgeSize;
  /** Zeigt vorne einen farbigen Punkt an */
  dot?: boolean;
  /** Wenn gesetzt, wird rechts ein Remove-Button angezeigt */
  onRemove?: () => void;
  className?: string;
};

/* ───────── Style-Mappings ───────── */

const baseClasses =
  'inline-flex items-center text-xs font-medium';

const sizeClasses: Record<BadgeSize, string> = {
  md: 'px-2 py-1',
  sm: 'px-1.5 py-0.5',
};

const shapeClasses: Record<BadgeShape, string> = {
  rounded: 'rounded-md',
  pill: 'rounded-full',
};

const borderToneClasses: Record<BadgeTone, string> = {
  gray:
    'bg-gray-50 text-gray-600 inset-ring inset-ring-gray-500/10 dark:bg-gray-400/10 dark:text-gray-400 dark:inset-ring-gray-400/20',
  red:
    'bg-red-50 text-red-700 inset-ring inset-ring-red-600/10 dark:bg-red-400/10 dark:text-red-400 dark:inset-ring-red-400/20',
  yellow:
    'bg-yellow-50 text-yellow-800 inset-ring inset-ring-yellow-600/20 dark:bg-yellow-400/10 dark:text-yellow-500 dark:inset-ring-yellow-400/20',
  green:
    'bg-green-50 text-green-700 inset-ring inset-ring-green-600/20 dark:bg-green-400/10 dark:text-green-400 dark:inset-ring-green-500/20',
  blue:
    'bg-blue-50 text-blue-700 inset-ring inset-ring-blue-700/10 dark:bg-blue-400/10 dark:text-blue-400 dark:inset-ring-blue-400/30',
  indigo:
    'bg-indigo-50 text-indigo-700 inset-ring inset-ring-indigo-700/10 dark:bg-indigo-400/10 dark:text-indigo-400 dark:inset-ring-indigo-400/30',
  purple:
    'bg-purple-50 text-purple-700 inset-ring inset-ring-purple-700/10 dark:bg-purple-400/10 dark:text-purple-400 dark:inset-ring-purple-400/30',
  pink:
    'bg-pink-50 text-pink-700 inset-ring inset-ring-pink-700/10 dark:bg-pink-400/10 dark:text-pink-400 dark:inset-ring-pink-400/20',
};

const flatToneClasses: Record<BadgeTone, string> = {
  gray:
    'bg-gray-100 text-gray-600 dark:bg-gray-400/10 dark:text-gray-400',
  red:
    'bg-red-100 text-red-700 dark:bg-red-400/10 dark:text-red-400',
  yellow:
    'bg-yellow-100 text-yellow-800 dark:bg-yellow-400/10 dark:text-yellow-500',
  green:
    'bg-green-100 text-green-700 dark:bg-green-400/10 dark:text-green-400',
  blue:
    'bg-blue-100 text-blue-700 dark:bg-blue-400/10 dark:text-blue-400',
  indigo:
    'bg-indigo-100 text-indigo-700 dark:bg-indigo-400/10 dark:text-indigo-400',
  purple:
    'bg-purple-100 text-purple-700 dark:bg-purple-400/10 dark:text-purple-400',
  pink:
    'bg-pink-100 text-pink-700 dark:bg-pink-400/10 dark:text-pink-400',
};

const dotToneClasses: Record<BadgeTone, string> = {
  gray: 'fill-gray-400',
  red: 'fill-red-500 dark:fill-red-400',
  yellow: 'fill-yellow-500 dark:fill-yellow-400',
  green: 'fill-green-500 dark:fill-green-400',
  blue: 'fill-blue-500 dark:fill-blue-400',
  indigo: 'fill-indigo-500 dark:fill-indigo-400',
  purple: 'fill-purple-500 dark:fill-purple-400',
  pink: 'fill-pink-500 dark:fill-pink-400',
};

/* ───────── Component ───────── */

export default function Badge({
  children,
  tone = 'gray',
  variant = 'border',
  shape = 'rounded',
  size = 'md',
  dot = false,
  onRemove,
  className,
}: BadgeProps) {
  const toneClasses =
    variant === 'border'
      ? borderToneClasses[tone]
      : flatToneClasses[tone];

  const hasRemove = typeof onRemove === 'function';

  return (
    <span
      className={clsx(
        baseClasses,
        sizeClasses[size],
        shapeClasses[shape],
        toneClasses,
        dot && 'gap-x-1.5',
        hasRemove && 'gap-x-0.5',
        className,
      )}
    >
      {/* Dot (optional) */}
      {dot && (
        <svg
          viewBox="0 0 6 6"
          aria-hidden="true"
          className={clsx('size-1.5', dotToneClasses[tone])}
        >
          <circle r={3} cx={3} cy={3} />
        </svg>
      )}

      <span>{children}</span>

      {/* Remove-Button (optional) */}
      {hasRemove && (
        <button
          type="button"
          onClick={onRemove}
          className="group relative -mr-1 size-3.5 rounded-xs hover:bg-black/5 dark:hover:bg-white/10"
        >
          <span className="sr-only">Entfernen</span>
          <svg
            viewBox="0 0 14 14"
            className="size-3.5 stroke-current/60 group-hover:stroke-current/90"
          >
            <path d="M4 4l6 6m0-6l-6 6" />
          </svg>
          <span className="absolute -inset-1" />
        </button>
      )}
    </span>
  );
}