import requests
import json

def get_tram_departures():
    url = "https://www.poznan.pl/mim/komunikacja/service.html"
    
    params = {
        "stop_id": "POKA42"
    }
    
    try:
        response = requests.get(url, params=params)
        data = response.json()
        
        for route in data.get('routes', []):
            if route['name'] == '16':
                for variant in route.get('variants', []):
                    if variant['headsign'] == 'Os. Sobieskiego':
                        for service in variant.get('services', []):
                            # Get first 3 departures
                            departures = service.get('departures', [])[0:3]
                            return departures
        
        return []
        
    except requests.exceptions.RequestException as e:
        print(f"Error making request: {e}")
        return []
    except json.JSONDecodeError as e:
        print(f"Error parsing JSON: {e}")
        return []

def main():
    departures = get_tram_departures()
    if departures:
        print("Next 3 departures for tram 16 to Os. Sobieskiego:")
        for departure in departures:
            print(departure)
    else:
        print("No departures found or error occurred")

if __name__ == "__main__":
    main()