[locations] Add weather fetching to birds and moods

vrobbler/apps/locations/utils.py

@@ -1,6 +1,9 @@
 import logging
+import xml.etree.ElementTree as ET
 from typing import Optional
+from urllib.parse import urlencode
 
+import requests
 from django.utils import timezone
 from scrobbles.models import Scrobble
 
@@ -196,3 +199,76 @@ def detect_movement(
             return result
 
     return result
+
+
+NWS_URL = "https://forecast.weather.gov/MapClick.php"
+
+
+def fetch_current_weather(lat: float, lon: float) -> Optional[dict]:
+    """Fetch current weather from NWS DWML feed for the given lat/lon.
+
+    Returns dict with 'temp' and 'description' keys, or None on failure.
+    """
+    params = {
+        "lat": lat,
+        "lon": lon,
+        "unit": 0,
+        "lg": "english",
+        "FcstType": "dwml",
+    }
+    url = f"{NWS_URL}?{urlencode(params)}"
+
+    try:
+        resp = requests.get(url, timeout=10)
+        resp.raise_for_status()
+    except requests.RequestException as e:
+        logger.warning("Failed to fetch NWS weather data: %s", e)
+        return None
+
+    try:
+        root = ET.fromstring(resp.content)
+    except ET.ParseError as e:
+        logger.warning("Failed to parse NWS XML: %s", e)
+        return None
+
+    # Find current observations data block
+    data_blocks = root.findall("data")
+    obs_block = None
+    for block in data_blocks:
+        if block.get("type") == "current observations":
+            obs_block = block
+            break
+
+    if obs_block is None:
+        logger.warning("No current observations block in NWS response")
+        return None
+
+    params_el = obs_block.find("parameters")
+    if params_el is None:
+        return None
+
+    # Temperature (apparent / feels-like)
+    temp = None
+    for temp_el in params_el.findall("temperature"):
+        if temp_el.get("type") == "apparent":
+            val_el = temp_el.find("value")
+            if val_el is not None and val_el.text:
+                try:
+                    temp = int(round(float(val_el.text)))
+                except (ValueError, TypeError):
+                    pass
+            break
+
+    # Weather description
+    description = None
+    weather_el = params_el.find("weather")
+    if weather_el is not None:
+        cond_el = weather_el.find("weather-conditions")
+        if cond_el is not None:
+            description = cond_el.get("weather-summary")
+
+    if temp is None and description is None:
+        logger.warning("No weather data found in NWS response")
+        return None
+
+    return {"temp": temp, "description": description}