import { expandPrompt } from "../functionCalling/eventHandler";

const prompt = `You are a newscaster specializing in providing news. Use the following context from The New York Times News to commented on. [{context_str}]`;

export async function handleNews(): Promise<string> {
  try {
    const response = await fetch(
      "https://rss.nytimes.com/services/xml/rss/nyt/HomePage.xml",
    );
    if (!response.ok) {
      throw new Error(`Failed to fetch: ${response.statusText}`);
    }

    const text = await response.text();
    const items = text.split("<item>").slice(1); // Split and remove the first non-item part
    const fullNews = getRandomArticle(items);

    const result = await expandPrompt(prompt, { context_str: fullNews });

    console.log("News function calling result: ", fullNews);
    return result;
  } catch (error) {
    console.error("Error in handleNews:", error);
    return "An error occurred while fetching and processing the news.";
  }
}

function getRandomArticle(items: string[]) {
  const randomItem = items[Math.floor(Math.random() * items.length)];

  const extractContent = (item: string, tag: string) => {
    const start = item.indexOf(`<${tag}>`) + `<${tag}>`.length;
    const end = item.indexOf(`</${tag}>`, start);
    return item.substring(start, end);
  };

  const title = extractContent(randomItem, "title");
  const description = extractContent(randomItem, "description");
  return `${title}: ${description}`;
}