backend/tools/knowledge_tools.py

import requests
import urllib.parse
from typing import Dict, Any

def fetch_wikipedia_summary(query: str) -> Dict[str, Any]:
    """Fetches a Wikipedia summary using the REST API (No Key)."""
    encoded_query = urllib.parse.quote(query)
    url = f"https://en.wikipedia.org/api/rest_v1/page/summary/{encoded_query}"
    try:
        response = requests.get(url, headers={"User-Agent": "Friday-Omega-AI/1.0"})
        if response.status_code == 200:
            data = response.json()
            return {"status": "success", "title": data.get("title"), "extract": data.get("extract")}
        elif response.status_code == 404:
            return {"status": "error", "message": f"Wikipedia page not found for '{query}'"}
        else:
            return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}

def fetch_nominatim_geocode(location: str) -> Dict[str, Any]:
    """Geocodes a location to latitude and longitude using Nominatim (No Key)."""
    url = "https://nominatim.openstreetmap.org/search"
    params = {"q": location, "format": "json", "limit": 1}
    try:
        response = requests.get(url, params=params, headers={"User-Agent": "Friday-Omega-AI/1.0"})
        if response.status_code == 200:
            data = response.json()
            if data and len(data) > 0:
                return {
                    "status": "success",
                    "lat": data[0]["lat"],
                    "lon": data[0]["lon"],
                    "display_name": data[0]["display_name"]
                }
            return {"status": "error", "message": "Location not found."}
        return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}

def fetch_open_meteo_weather(lat: float, lon: float) -> Dict[str, Any]:
    """Fetches current weather from Open-Meteo (No Key)."""
    url = "https://api.open-meteo.com/v1/forecast"
    params = {
        "latitude": lat,
        "longitude": lon,
        "current_weather": "true"
    }
    try:
        response = requests.get(url, params=params)
        if response.status_code == 200:
            return {"status": "success", "weather": response.json().get("current_weather", {})}
        return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}

def fetch_exchange_rate(base_currency: str = "USD") -> Dict[str, Any]:
    """Fetches exchange rates via ExchangeRate-API free tier (No Key)."""
    url = f"https://open.er-api.com/v6/latest/{base_currency.upper()}"
    try:
        response = requests.get(url)
        if response.status_code == 200:
            return {"status": "success", "rates": response.json().get("rates", {})}
        return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}

def fetch_public_ip() -> Dict[str, Any]:
    """Fetches public IP address via IPify (No Key)."""
    url = "https://api.ipify.org?format=json"
    try:
        response = requests.get(url)
        if response.status_code == 200:
            return {"status": "success", "ip": response.json().get("ip")}
        return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}

def fetch_world_time(timezone: str) -> Dict[str, Any]:
    """Fetches current time for a timezone from WorldTimeAPI (No Key). Example: Europe/London"""
    url = f"http://worldtimeapi.org/api/timezone/{timezone}"
    try:
        response = requests.get(url)
        if response.status_code == 200:
            data = response.json()
            return {"status": "success", "datetime": data.get("datetime"), "timezone": data.get("timezone")}
        return {"status": "error", "message": f"HTTP {response.status_code}"}
    except Exception as e:
        return {"status": "error", "message": str(e)}