2 files changed, 37 insertions(+), 2 deletions(-)

M activities/activity.py
M activities/services.py

@@ 185,6 185,21 @@ def estimate_energy(distance: float,
 
     return kcals
 
+# Thresholds for classifying activities based solely on average moving speed:
+AVG_SPEED_RIDE_THRESHOLD = 20 / 3.6
+AVG_SPEED_RUN_THRESHOLD = 6 / 3.6
+
+def guess_type(analysis) -> str:
+    try:
+        avg_speed = analysis['distance'] / analysis['moving_seconds']
+        if avg_speed >= AVG_SPEED_RIDE_THRESHOLD:
+            return 'Ride'
+        if avg_speed >= AVG_SPEED_RUN_THRESHOLD:
+            return 'Run'
+        return 'Walk'
+    except:
+        return 'Exercise'
+
 def analyse(track: Track, athlete_data: Mapping[str, float], raw: bool = False):
     pos = track.positions
     raw_hr = track.hr

@@ 9,7 9,7 @@ from django.contrib.auth.models import User
 from django import forms
 
 from .models import Activity, ActivityUpload, HealthData
-from .activity import analyse, from_fit_bytes, from_gpx_bytes
+from .activity import analyse, from_fit_bytes, from_gpx_bytes, guess_type
 
 import datetime
 import gzip


@@ 35,7 35,7 @@ def create_activity(user: User, title: str, data: bytes):
         user=user,
         start_date=datetime.datetime.now(),
         activity_title=title,
-        activity_type='Run',
+        activity_type='Unknown',
         orig_upload=ul,
     )
 


@@ 64,6 64,19 @@ def get_user_healthdata(userId: int, type: str, time: datetime.datetime):
 
     return None
 
+def name_time(t: datetime.datetime) -> str:
+    """
+    Return the English word to approximately describe in which part of the day
+    the provided time object falls.
+    """
+    if 5 <= t.hour < 12:
+        return 'Morning'
+    if 12 <= t.hour < 17:
+        return 'Afternoon'
+    if 17 <= t.hour < 21:
+        return 'Evening'
+    return 'Night'
+
 def process_activity(act: Activity):
     logger.debug('begin processing activity %d', act.id)
     begin = time.monotonic()


@@ 111,6 124,13 @@ def process_activity(act: Activity):
     act.moving_time = analysis['moving_seconds']
     act.start_date = analysis['start_date']
 
+    if act.activity_type == 'Unknown':
+        act.activity_type = guess_type(analysis)
+
+    if act.activity_title in (None, ''):
+        part_of_day = name_time(analysis['start_date'])
+        act.activity_title = f'{part_of_day} {act.activity_type}'
+
     # copy the dictionary, so we can remove unwanted entries:
     del analysis['start_date']
     act.analysis = analysis