// The glyph column of a tool row's head. Recognition is narrow on purpose: an
// unrecognised or absent `ToolKind` gets the generic bullet, never a blank
// column and never a mark that stands for the wrong kind of work.

import type { AcpToolKind } from "../../types.js";

/** Glyph shown in a tool row's head, by `ToolKind`. */
const KIND_GLYPH: Record<string, string> = {
  read: "≡",
  edit: "±",
  delete: "✕",
  move: "→",
  search: "⌕",
  execute: "$",
  think: "…",
  fetch: "⇣",
  switch_mode: "⇄",
};

export function toolGlyph(kind: string | undefined): string {
  return (kind && KIND_GLYPH[kind]) || "•";
}

export interface ToolIconProps {
  kind: AcpToolKind | string | undefined;
  className?: string;
}

export function ToolIcon({ kind, className = "st-tool-glyph" }: ToolIconProps) {
  return (
    <span className={className} aria-hidden="true">
      {toolGlyph(kind)}
    </span>
  );
}