yaak-mountain-loop/src-web/hooks/useActiveWorkspaceChangedToast.tsx

import { useAtomValue } from "jotai";
import { useEffect, useState } from "react";
import { InlineCode } from "../components/core/InlineCode";
import { showToast } from "../lib/toast";
import { activeWorkspaceAtom } from "./useActiveWorkspace";

export function useActiveWorkspaceChangedToast() {
  const activeWorkspace = useAtomValue(activeWorkspaceAtom);
  const [id, setId] = useState<string | null>(activeWorkspace?.id ?? null);

  useEffect(() => {
    // Early return if same or invalid active workspace
    if (id === activeWorkspace?.id || activeWorkspace == null) return;

    setId(activeWorkspace?.id ?? null);

    // Don't notify on the first load
    if (id === null) return;

    showToast({
      id: `workspace-changed-${activeWorkspace.id}`,
      timeout: 3000,
      message: (
        <>
          Activated workspace{" "}
          <InlineCode className="whitespace-nowrap">{activeWorkspace.name}</InlineCode>
        </>
      ),
    });
  }, [activeWorkspace, id]);
}