import { useState } from "react";

import type { Plugin, ToolPlugin } from "./types.js";

interface UseActiveToolResult {
	activePlugin: ToolPlugin | null;
	activateTool: (id: string) => void;
	deactivateTool: () => void;
}

/** Manages which tool plugin is currently active. */
export function useActiveTool(plugins: Plugin[]): UseActiveToolResult {
	let [activeId, setActiveId] = useState<string | null>(null);
	let activePlugin = (plugins.find((p) => p.type === "tool" && p.id === activeId) ?? null) as ToolPlugin | null;

	return {
		activePlugin,
		activateTool: setActiveId,
		deactivateTool: () => setActiveId(null),
	};
}