Add riverconditions.py

riverconditions.py

@@ -0,0 +1,32 @@
+#!/usr/home/homeassistant/bin/python3
+
+import sys
+import json
+import requests
+
+mappings = {
+    'temperature': 'watertemp',
+    'streamflow':  'flow',
+    'height':      'height',
+}
+if __name__ == '__main__':
+    exit_code = 1
+    for i in range(4):
+        try:
+            result = dict()
+            station = sys.argv[1]
+            url = f'https://waterservices.usgs.gov/nwis/iv/?format=json&sites={station}&siteStatus=all'
+            req = requests.get (url, timeout=3)
+            if req.ok:
+                j = req.json()
+                for v in j['value']['timeSeries']:
+                    variable_name = v['variable']['variableName'].lower()
+                    for k in mappings.keys():
+                        if k in variable_name:
+                            result[mappings[k]] = float(v['values'][0]['value'][0]['value'])
+            print (json.dumps ({'data': result}))
+            exit_code = 0
+            break
+        except:
+            pass
+    sys.exit (exit_code)