Animated Icon Button

'use client';

import type { ElementType, HTMLAttributes, ReactNode } from 'react';
import './AnimatedIconButton.css';

/**
 * AnimatedIconButton — A button that elegantly slides an icon into view on hover.
 *
 * @param icon - Optional. Custom icon node. Defaults to a chevron pointing in `iconPos` direction.
 * @param iconPos - Optional. 'left' | 'right'. Default 'right'.
 */
export interface AnimatedIconButtonProps extends HTMLAttributes<HTMLElement> {
  href?: string;
  target?: string;
  rel?: string;
  type?: 'button' | 'submit' | 'reset';
  variant?: 'primary' | 'secondary' | 'ghost';
  size?: 'sm' | 'md' | 'lg';
  iconPos?: 'left' | 'right';
  icon?: ReactNode;
  disabled?: boolean;
  children?: ReactNode;
}

const ChevronLeft = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
    <polyline points="15 18 9 12 15 6" />
  </svg>
);
const ChevronRight = () => (
  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.5" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
    <polyline points="9 18 15 12 9 6" />
  </svg>
);

export function AnimatedIconButton({
  href,
  type = 'button',
  variant = 'primary',
  size = 'md',
  iconPos = 'right',
  icon,
  disabled = false,
  className,
  children,
  ...rest
}: AnimatedIconButtonProps) {
  const Tag: ElementType = href ? 'a' : 'button';
  const iconNode = <span className="icon-anim-btn__icon">{icon ?? (iconPos === 'left' ? <ChevronLeft /> : <ChevronRight />)}</span>;
  return (
    <Tag
      {...rest}
      href={href}
      type={href ? undefined : type}
      disabled={href ? undefined : disabled}
      aria-disabled={href && disabled ? true : undefined}
      className={['icon-anim-btn', `icon-anim-btn--${variant}`, `icon-anim-btn--${size}`, `icon-anim-btn--${iconPos}`, className]
        .filter(Boolean)
        .join(' ')}
    >
      <span className="icon-anim-btn__inner">
        {iconPos === 'left' && iconNode}
        <span className="icon-anim-btn__text">{children}</span>
        {iconPos === 'right' && iconNode}
      </span>
    </Tag>
  );
}

export default AnimatedIconButton;

/* AnimatedIconButton — ported from astro-component-kit (buttons/AnimatedIconButton.astro) */

.icon-anim-btn {
  --btn-bg: var(--c-primary, #6366f1);
  --btn-color: #fff;
  --btn-hover-bg: var(--c-primary-light, #818cf8);
  
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--btn-bg);
  color: var(--btn-color);
  border: none;
  border-radius: var(--r-md, 12px);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
  font-family: var(--font-sans, inherit);
}

.icon-anim-btn__inner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: transform 0.3s ease;
}

.icon-anim-btn__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.25em;
  height: 1.25em;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.icon-anim-btn__icon svg {
  width: 100%;
  height: 100%;
}

/* Hover Animations */
.icon-anim-btn--right:hover:not(:disabled) .icon-anim-btn__icon {
  transform: translateX(4px) scale(1.1);
}

.icon-anim-btn--left:hover:not(:disabled) .icon-anim-btn__icon {
  transform: translateX(-4px) scale(1.1);
}

.icon-anim-btn:hover:not(:disabled) {
  background: var(--btn-hover-bg);
  box-shadow: 0 4px 20px -5px color-mix(in srgb, var(--btn-bg), transparent 40%);
}

.icon-anim-btn:active:not(:disabled) {
  transform: scale(0.97);
}

.icon-anim-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(1);
}

/* Variants */
.icon-anim-btn--secondary {
  --btn-bg: rgba(255, 255, 255, 0.05);
  --btn-color: var(--c-text-1, #f8fafc);
  --btn-hover-bg: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.icon-anim-btn--ghost {
  --btn-bg: transparent;
  --btn-color: var(--c-primary-light, #818cf8);
  --btn-hover-bg: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Sizes */
.icon-anim-btn--sm { padding: 0.45rem 1.2rem; font-size: 0.85rem; }
.icon-anim-btn--md { padding: 0.75rem 1.8rem; font-size: 1rem; }
.icon-anim-btn--lg { padding: 1rem 2.5rem; font-size: 1.15rem; }