from langchain_core.tools import tool
from ddgs import DDGS


@tool
def search_tool(query: str) -> str:
    """Search the web using DuckDuckGo. Input must be ONLY the search query string, nothing else."""
    with DDGS() as ddgs:
        results = ddgs.text(query, max_results=3)
        if not results:
            return "No results found."
        return "\n\n".join(
            f"{r['title']}\n{r['href']}\n{r['body']}" for r in results
        )