stock-listing-app/actions/view-screen.ts

/**
 * See what the user is currently looking at on screen.
 *
 * Reads and returns the current navigation state from application state.
 *
 * Usage:
 *   pnpm action view-screen
 */

import { defineAction } from "@agent-native/core/action";
import { readAppState } from "@agent-native/core/application-state";
import { eq } from "@agent-native/core/db/schema";
import { z } from "zod";

import { getDb } from "../server/db/index.js";
import { stocks } from "../server/db/schema.js";

export default defineAction({
  description:
    "See what the user is currently looking at on screen. Returns the current navigation state for the chat-first app. Always call this first before taking any action.",
  schema: z.object({}),
  http: false,
  readOnly: true,
  run: async (_args, ctx) => {
    const navigation = await readAppState("navigation");

    const screen: Record<string, unknown> = {};
    if (navigation) screen.navigation = navigation;

    const view = (navigation as { view?: string } | null)?.view;
    if (view === "stocks" && ctx?.userEmail) {
      const db = getDb();
      const rows = await db
        .select()
        .from(stocks)
        .where(eq(stocks.ownerEmail, ctx.userEmail));
      screen.stocks = { count: rows.length, listings: rows };
    }

    if (Object.keys(screen).length === 0) {
      return "No application state found. Is the app running?";
    }
    return screen;
  },
});