import mysql.connector


class Database:
    def __init__(self, config, logger):
        self.config = config
        self.logger = logger

    def connect(self):
        """Maakt een databaseverbinding."""
        try:
            conn = mysql.connector.connect(**self.config)
            return conn
        except mysql.connector.Error as err:
            self.logger.error(f"Database connectiefout: {err}")
            return None

    def get_weather_data(self):
        """Haalt de gemiddelde weergegevens per dag op."""
        conn = self.connect()
        if not conn:
            return []

        cursor = conn.cursor(dictionary=True)
        query = """
            SELECT DATE(utc) as date, 
                   AVG(temperature) as avg_temp, 
                   AVG(solar_performance) as avg_solar, 
                   AVG(wind_speed) as avg_wind_speed, 
                   GROUP_CONCAT(DISTINCT weather_description) as descriptions
            FROM weather_forecast 
            WHERE DATE(utc) >= DATE(NOW())
            GROUP BY DATE(utc)
            ORDER BY date ASC
        """
        cursor.execute(query)
        data = cursor.fetchall()
        conn.close()
        return data