Exclude invaid gps datetimes

server/python_server.py

@@ -1,11 +1,10 @@
 from flask import Flask, request, jsonify
-from datetime import datetime
+from datetime import datetime, timedelta
 import pint
 import sqlite3
 from pyproj import Geod
 import timezonefinder, pytz
 from datetime import timezone as dttz
-
 app = Flask(__name__)
 
 bear_correction = False
@@ -28,6 +27,11 @@ with sqlite3.connect('location.db', check_same_thread=False) as conn:
 ureg = pint.UnitRegistry()
 geodesic = Geod(ellps='WGS84')
 
+current_datetime = datetime.utcnow()
+date_yesterday = current_datetime - timedelta(days=1)
+date_tomorrow = current_datetime +  timedelta(days=1)
+valid_date = True
+
 @app.route('/')
 def hello():
     return 'Hello!'
@@ -46,10 +50,14 @@ def getGpsDistance():
    
     try:
         gpsDateTime = datetime.strptime(request.args.get('gpsDateTime')[:11], '%d%m%y%H%M%S')
+        if gpsDateTime > date_tomorrow or current_datetime < date_yesterday:
+            valid_date = False
         print(gpsDateTime)
     except ValueError:
         print("No gpsDateTime")
         gpsDateTime = datetime.now()
+        valid_date = False
+
         
 
     
@@ -77,7 +85,7 @@ def getGpsDistance():
             req_long = 0.0
             req_dateTime = datetime.now()
         
-        if (lat != 0.0 and long != 0.0):
+        if (lat != 0.0 and long != 0.0 and valid_date):
             cur.execute(f'INSERT INTO location_data(sender_id, lat, long, gpsDateTime) VALUES({own_id}, {lat}, {long}, "{gpsDateTime.isoformat()}");')
             conn.commit()
 
@@ -86,7 +94,7 @@ def getGpsDistance():
             fwd_azimuth, back_azimuth, distance = geodesic.inv(long, lat, req_long, req_lat)
 
             distance = distance * ureg.meter
-            prettyDistance = f"{distance:.1f~#P}" + '      (N)' if not bear_correction else ''
+            prettyDistance = f"{distance:.1f~#P}" + '    (N)' if not bear_correction else ''
             print(f'fwd: {fwd_azimuth}, bwd: {back_azimuth}, dist: {prettyDistance}')
             tf = timezonefinder.TimezoneFinder()
             timezone_str = tf.certain_timezone_at(lat=lat, lng=long)
@@ -99,7 +107,7 @@ def getGpsDistance():
 
                 print(rTime)
         else:
-            prettyDistance = "No GPS Signal"
+            prettyDistance = "Invalid GPS Signal"
             fwd_azimuth = 0.0
             rTime = datetime.utcnow()