import GlassSurface from '../ui/GlassSurface.js';

function ToastIcon({ type }) {
  if (type === 'error') {
    return (
      <svg
        width="16"
        height="16"
        viewBox="0 0 24 24"
        fill="none"
        stroke="currentColor"
        strokeWidth="2.5"
        strokeLinecap="round"
        strokeLinejoin="round"
        aria-hidden="true"
      >
        <circle cx="12" cy="12" r="10" />
        <line x1="15" y1="9" x2="9" y2="15" />
        <line x1="9" y1="9" x2="15" y2="15" />
      </svg>
    );
  }

  if (type === 'info') {
    return (
      <svg
        width="16"
        height="16"
        viewBox="0 0 24 24"
        fill="none"
        stroke="currentColor"
        strokeWidth="2.5"
        strokeLinecap="round"
        strokeLinejoin="round"
        aria-hidden="true"
      >
        <circle cx="12" cy="12" r="10" />
        <line x1="12" y1="16" x2="12" y2="12" />
        <line x1="12" y1="8" x2="12.01" y2="8" />
      </svg>
    );
  }

  return (
    <svg
      width="16"
      height="16"
      viewBox="0 0 24 24"
      fill="none"
      stroke="currentColor"
      strokeWidth="2.5"
      strokeLinecap="round"
      strokeLinejoin="round"
      aria-hidden="true"
    >
      <path d="M20 6L9 17l-5-5" />
    </svg>
  );
}

const ICON_COLORS = {
  success: 'var(--color-success)',
  error: 'var(--color-error)',
  info: 'var(--color-info)',
};

/**
 * Floating toast overlay for the camera viewport.
 *
 * Always rendered in the DOM so CSS transitions work on enter and exit.
 * The parent controls visibility via the `visible` prop and handles the
 * auto-dismiss timer.
 */
export default function ScannerToast({ message, visible, type = 'success' }) {
  const color = ICON_COLORS[type] || ICON_COLORS.success;

  return (
    <div
      role="status"
      aria-live="polite"
      className="absolute left-1/2 z-20 pointer-events-none"
      style={{
        bottom: '33%',
        transform: `translateX(-50%) translateY(${visible ? '0' : '12px'})`,
        opacity: visible ? 1 : 0,
        transition: 'opacity 200ms ease, transform 200ms ease',
        visibility: visible ? 'visible' : 'hidden',
        transitionProperty: 'opacity, transform, visibility',
        transitionDelay: visible ? '0ms' : '0ms, 0ms, 200ms',
      }}
    >
      <GlassSurface
        tint="high"
        blur="low"
        rim="subtle"
        elevation="ambient"
        className="flex items-center gap-2 rounded-full px-4 py-3 pointer-events-auto"
        style={{ maxWidth: 280 }}
      >
        <span
          className="flex-shrink-0"
          style={{ color }}
          aria-hidden="true"
        >
          <ToastIcon type={type} />
        </span>
        <span
          className="text-sm font-medium truncate"
          style={{ color: 'var(--text-primary)' }}
        >
          {message}
        </span>
      </GlassSurface>
    </div>
  );
}