"""
Collector for Bright Sky (Weather) API.
"""

import logging
from datetime import datetime, timedelta, timezone

import polars as pl

from utils import request_utils
from utils.config_loader import settings

logger = logging.getLogger(__name__)


def fetch_weather(lat: float = None, lon: float = None) -> pl.DataFrame:
    """
    Fetches historical weather data from Bright Sky API.
    Filters for the specific columns defined in the Bronze schema.

    Returns:
        A Polars DataFrame containing filtered raw weather parameters.
    """
    lat = lat or settings.brightsky.lat
    lon = lon or settings.brightsky.lon
    url = settings.brightsky.base_url

    current_utc = datetime.now(timezone.utc)
    payload = {
        "date": (current_utc - timedelta(hours=72)).isoformat(),
        "last_date": current_utc.isoformat(),
        "lat": lat,
        "lon": lon,
        "units": "dwd",
        "tz": "Etc/UTC",
    }

    schema_cols = [
        "timestamp",
        "temperature",
        "wind_speed",
        "solar",
        "sunshine",
        "cloud_cover",
        "precipitation",
    ]

    try:
        data = request_utils.make_requests(url, params=payload)
        weather_list = data.get("weather", [])

        if not weather_list:
            logger.warning("No weather data returned from API.")
            return pl.DataFrame()

        df = pl.DataFrame(weather_list)

        available_cols = [c for c in schema_cols if c in df.columns]
        return df.select(available_cols)

    except Exception as e:
        logger.error(f"Failed to fetch weather data: {e}")
        return pl.DataFrame()