from datetime import datetime


class RainChanceFetcher:
    def __init__(self, weather_manager):
        self.weather_manager = weather_manager

    def get_rain_chance(self):
        try:
            data = self.weather_manager.get_hourly_data()
            if not data:
                return "Error: Unable to fetch weather data"

            periods = data['properties']['periods']
            result = []
            count = 0

            for period in periods:
                try:
                    if count >= 24:
                        break

                    time_str = period['startTime']
                    dt = datetime.fromisoformat(time_str.replace('Z', '+00:00'))

                    hour = dt.strftime("%I").lstrip('0')
                    period_str = dt.strftime("%p").lower()

                    if len(hour) == 1:
                        time_str = f"{hour}{period_str}"
                    else:
                        time_str = f"{hour}{period_str[0]}"

                    prob = period.get('probabilityOfPrecipitation', {}).get('value', 0)
                    rain_chance = 0 if prob is None else prob

                    formatted_entry = f"{time_str}:{rain_chance}%"
                    result.append(formatted_entry)
                    count += 1

                except Exception as e:
                    continue

            if not result:
                return "Error: Could not process weather data"

            return "\n".join(result)

        except Exception as e:
            return f"Unexpected error: {str(e)}"