import React from 'react';

/**
 * Status pill — muted tint background, colored text. For state words like "ahead", "behind", "steeping".
 */
export interface BadgeProps {
  /** @default 'neutral' */
  tone?: 'ok' | 'warn' | 'danger' | 'info' | 'neutral' | 'jade';
  /** Leading status dot @default false */
  dot?: boolean;
  children?: React.ReactNode;
  style?: React.CSSProperties;
}

const CSS = `
.ct-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 12px/1 var(--font-sans);
  padding: 4px 9px;
  border-radius: var(--radius-round);
}
.ct-badge__dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.ct-badge--ok { background: var(--ok-tint); color: var(--ok); }
.ct-badge--warn { background: var(--warn-tint); color: var(--warn); }
.ct-badge--danger { background: var(--danger-tint); color: var(--danger); }
.ct-badge--info { background: var(--info-tint); color: var(--info); }
.ct-badge--neutral { background: var(--paper-2); color: var(--ink-2); }
.ct-badge--jade { background: var(--jade-tint); color: var(--jade-7); }
`;
(function inject() {
  if (typeof document !== 'undefined' && !document.getElementById('ct-badge-css')) {
    const s = document.createElement('style'); s.id = 'ct-badge-css'; s.textContent = CSS;
    document.head.appendChild(s);
  }
})();

export function Badge({ tone = 'neutral', dot = false, children, style, ...rest }: BadgeProps) {
  return (
    <span className={`ct-badge ct-badge--${tone}`} style={style} {...rest}>
      {dot ? <span className="ct-badge__dot"></span> : null}
      {children}
    </span>
  );
}
