Build a Smart Event Planner

// 1. Detect user location
const geoRes = await fetch('https://api.ipgeolocation.io/ipgeo?apiKey=YOUR_API_KEY');
const { latitude, longitude, city } = await geoRes.json();

// 2. Fetch existing calendar events
const calRes = await fetch(
  'https://www.googleapis.com/calendar/v3/calendars/primary/events?timeMin=' +
  new Date().toISOString() + '&timeMax=' + new Date(Date.now() + 5*86400000).toISOString(),
  { headers: { 'Authorization': 'Bearer YOUR_OAUTH_TOKEN' } }
);
const { items: events } = await calRes.json();

// 3. Fetch 5-day weather forecast
const weatherRes = await fetch(
  `https://api.openweathermap.org/data/2.5/forecast?lat=${latitude}&lon=${longitude}&units=metric&appid=YOUR_API_KEY`
);
const { list: forecast } = await weatherRes.json();

// 4. Find optimal time slots (clear weather + no conflicts)
const clearSlots = forecast.filter(f =>
  f.weather[0].main === 'Clear' && f.main.temp > 15 && f.main.temp < 35
);
const busyTimes = events.map(e => ({ start: new Date(e.start.dateTime), end: new Date(e.end.dateTime) }));
const optimalSlots = clearSlots.filter(slot => {
  const slotTime = new Date(slot.dt * 1000);
  return !busyTimes.some(b => slotTime >= b.start && slotTime <= b.end);
});

// 5. Create event at best slot
const bestSlot = optimalSlots[0];
await fetch('https://www.googleapis.com/calendar/v3/calendars/primary/events', {
  method: 'POST',
  headers: { 'Authorization': 'Bearer YOUR_OAUTH_TOKEN', 'Content-Type': 'application/json' },
  body: JSON.stringify({
    summary: 'Outdoor Event',
    location: city,
    start: { dateTime: new Date(bestSlot.dt * 1000).toISOString() },
    end: { dateTime: new Date(bestSlot.dt * 1000 + 7200000).toISOString() }
  })
});