"""
Weather service for Munich using Open-Meteo API (free, no API key needed)
"""
import requests
from datetime import datetime


def get_munich_weather():
    """
    Get current weather for Munich, Germany
    
    Returns:
        {
            'success': bool,
            'temperature': float,  # Celsius
            'condition': str,      # e.g., "Partly cloudy"
            'icon': str,          # Weather emoji
            'high': float,        # Today's high
            'low': float,         # Today's low
            'error': str or None
        }
    """
    try:
        # Munich coordinates
        lat = 48.1351
        lon = 11.5820
        
        # Open-Meteo API (free, no key needed)
        url = f"https://api.open-meteo.com/v1/forecast"
        params = {
            'latitude': lat,
            'longitude': lon,
            'current': 'temperature_2m,weather_code',
            'daily': 'temperature_2m_max,temperature_2m_min',
            'timezone': 'Europe/Berlin',
            'forecast_days': 1
        }
        
        response = requests.get(url, params=params, timeout=10)
        response.raise_for_status()
        data = response.json()
        
        # Extract data
        current = data.get('current', {})
        daily = data.get('daily', {})
        
        temperature = current.get('temperature_2m')
        weather_code = current.get('weather_code', 0)
        high = daily.get('temperature_2m_max', [None])[0]
        low = daily.get('temperature_2m_min', [None])[0]
        
        # Map weather code to condition and emoji
        condition, icon = _get_weather_description(weather_code)
        
        return {
            'success': True,
            'temperature': round(temperature, 1) if temperature else None,
            'condition': condition,
            'icon': icon,
            'high': round(high, 1) if high else None,
            'low': round(low, 1) if low else None,
            'error': None
        }
        
    except requests.exceptions.Timeout:
        return {
            'success': False,
            'temperature': None,
            'condition': 'Unknown',
            'icon': '🌡️',
            'high': None,
            'low': None,
            'error': 'Weather service timeout'
        }
    except Exception as e:
        return {
            'success': False,
            'temperature': None,
            'condition': 'Unknown',
            'icon': '🌡️',
            'high': None,
            'low': None,
            'error': str(e)
        }


def _get_weather_description(code):
    """
    Map WMO weather code to description and emoji
    https://open-meteo.com/en/docs
    """
    weather_map = {
        0: ('Clear sky', '☀️'),
        1: ('Mainly clear', '🌤️'),
        2: ('Partly cloudy', '⛅'),
        3: ('Overcast', '☁️'),
        45: ('Foggy', '🌫️'),
        48: ('Foggy', '🌫️'),
        51: ('Light drizzle', '🌦️'),
        53: ('Drizzle', '🌦️'),
        55: ('Heavy drizzle', '🌧️'),
        61: ('Light rain', '🌧️'),
        63: ('Rain', '🌧️'),
        65: ('Heavy rain', '⛈️'),
        71: ('Light snow', '🌨️'),
        73: ('Snow', '❄️'),
        75: ('Heavy snow', '❄️'),
        77: ('Snow grains', '🌨️'),
        80: ('Light showers', '🌦️'),
        81: ('Showers', '🌧️'),
        82: ('Heavy showers', '⛈️'),
        85: ('Light snow showers', '🌨️'),
        86: ('Snow showers', '❄️'),
        95: ('Thunderstorm', '⛈️'),
        96: ('Thunderstorm with hail', '⛈️'),
        99: ('Thunderstorm with hail', '⛈️'),
    }
    
    return weather_map.get(code, ('Unknown', '🌡️'))


if __name__ == '__main__':
    # Test
    weather = get_munich_weather()
    print(f"Success: {weather['success']}")
    print(f"Temperature: {weather['temperature']}°C")
    print(f"Condition: {weather['icon']} {weather['condition']}")
    print(f"High/Low: {weather['high']}°C / {weather['low']}°C")
    if weather['error']:
        print(f"Error: {weather['error']}")