All tweaks added

backend/app/api/auth.py

@@ -7,13 +7,23 @@ from typing import Optional
 import httpx
 
 from app.core.database import get_db
-from app.core.security import verify_password, create_access_token, hash_password, get_current_user
+from app.core.security import verify_password, create_access_token, get_current_user
 from app.core.config import settings
 from app.models.user import User
 
 router = APIRouter()
 
 
+async def _get_pocketid_config(db: AsyncSession):
+    """Get PocketID config from DB (admin user) falling back to env vars."""
+    result = await db.execute(select(User).where(User.is_admin == True).limit(1))
+    admin = result.scalar_one_or_none()
+    issuer = (admin and admin.pocketid_issuer) or settings.pocketid_issuer
+    client_id = (admin and admin.pocketid_client_id) or settings.pocketid_client_id
+    client_secret = (admin and admin.pocketid_client_secret) or settings.pocketid_client_secret
+    return issuer, client_id, client_secret
+
+
 class Token(BaseModel):
     access_token: str
     token_type: str
@@ -37,24 +47,15 @@ async def login(
     form_data: OAuth2PasswordRequestForm = Depends(),
     db: AsyncSession = Depends(get_db),
 ):
-    result = await db.execute(
-        select(User).where(User.username == form_data.username)
-    )
+    result = await db.execute(select(User).where(User.username == form_data.username))
     user = result.scalar_one_or_none()
-
     if not user or not user.hashed_password:
         raise HTTPException(status_code=400, detail="Invalid credentials")
     if not verify_password(form_data.password, user.hashed_password):
         raise HTTPException(status_code=400, detail="Invalid credentials")
-
     token = create_access_token({"sub": str(user.id)})
-    return Token(
-        access_token=token,
-        token_type="bearer",
-        user_id=user.id,
-        username=user.username,
-        is_admin=user.is_admin,
-    )
+    return Token(access_token=token, token_type="bearer",
+                 user_id=user.id, username=user.username, is_admin=user.is_admin)
 
 
 @router.get("/me", response_model=UserOut)
@@ -63,51 +64,44 @@ async def get_me(current_user: User = Depends(get_current_user)):
 
 
 @router.get("/pocketid/available")
-async def pocketid_available():
-    return {"available": bool(settings.pocketid_issuer and settings.pocketid_client_id)}
+async def pocketid_available(db: AsyncSession = Depends(get_db)):
+    issuer, client_id, _ = await _get_pocketid_config(db)
+    return {"available": bool(issuer and client_id)}
 
 
 @router.get("/pocketid/login-url")
-async def pocketid_login_url():
-    """Return the OIDC authorization URL for PocketID."""
-    if not settings.pocketid_issuer:
+async def pocketid_login_url(db: AsyncSession = Depends(get_db)):
+    issuer, client_id, _ = await _get_pocketid_config(db)
+    if not issuer or not client_id:
         raise HTTPException(status_code=404, detail="PocketID not configured")
-
+    from urllib.parse import urlencode
     params = {
-        "client_id": settings.pocketid_client_id,
+        "client_id": client_id,
         "redirect_uri": "/api/auth/pocketid/callback",
         "response_type": "code",
         "scope": "openid profile email",
     }
-    from urllib.parse import urlencode
-    url = f"{settings.pocketid_issuer}/authorize?{urlencode(params)}"
-    return {"url": url}
+    return {"url": f"{issuer}/authorize?{urlencode(params)}"}
 
 
 @router.get("/pocketid/callback")
 async def pocketid_callback(code: str, db: AsyncSession = Depends(get_db)):
-    """Exchange OIDC code for tokens and create/login user."""
-    if not settings.pocketid_issuer:
+    issuer, client_id, client_secret = await _get_pocketid_config(db)
+    if not issuer:
         raise HTTPException(status_code=404, detail="PocketID not configured")
 
-    # Exchange code for tokens
     async with httpx.AsyncClient() as client:
         resp = await client.post(
-            f"{settings.pocketid_issuer}/token",
-            data={
-                "grant_type": "authorization_code",
-                "code": code,
-                "redirect_uri": "/api/auth/pocketid/callback",
-                "client_id": settings.pocketid_client_id,
-                "client_secret": settings.pocketid_client_secret,
-            },
+            f"{issuer}/token",
+            data={"grant_type": "authorization_code", "code": code,
+                  "redirect_uri": "/api/auth/pocketid/callback",
+                  "client_id": client_id, "client_secret": client_secret},
         )
         if resp.status_code != 200:
             raise HTTPException(status_code=400, detail="Token exchange failed")
-
         tokens = resp.json()
         userinfo_resp = await client.get(
-            f"{settings.pocketid_issuer}/userinfo",
+            f"{issuer}/userinfo",
             headers={"Authorization": f"Bearer {tokens['access_token']}"},
         )
         userinfo = userinfo_resp.json()
@@ -118,17 +112,11 @@ async def pocketid_callback(code: str, db: AsyncSession = Depends(get_db)):
 
     result = await db.execute(select(User).where(User.pocketid_sub == sub))
     user = result.scalar_one_or_none()
-
     if not user:
-        user = User(
-            username=preferred_username,
-            email=email,
-            pocketid_sub=sub,
-        )
+        user = User(username=preferred_username, email=email, pocketid_sub=sub)
         db.add(user)
         await db.flush()
 
     token = create_access_token({"sub": str(user.id)})
-    # Redirect to frontend with token
     from fastapi.responses import RedirectResponse
     return RedirectResponse(url=f"/?token={token}")

backend/app/api/profile.py

@@ -0,0 +1,220 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select, desc
+from pydantic import BaseModel
+from typing import Optional, List
+from datetime import datetime, date, timezone
+
+from app.core.database import get_db
+from app.core.security import get_current_user, hash_password, verify_password
+from app.models.user import User, WeightLog
+
+router = APIRouter()
+
+
+# ── Profile ────────────────────────────────────────────────────────────────
+
+class ProfileUpdate(BaseModel):
+    max_heart_rate: Optional[int] = None
+    resting_heart_rate: Optional[int] = None
+    birth_year: Optional[int] = None
+    height_cm: Optional[float] = None
+
+
+class ProfileOut(BaseModel):
+    id: int
+    username: str
+    email: Optional[str]
+    max_heart_rate: Optional[int]
+    resting_heart_rate: Optional[int]
+    birth_year: Optional[int]
+    height_cm: Optional[float]
+    estimated_max_hr: Optional[int]
+    is_admin: bool
+
+    class Config:
+        from_attributes = True
+
+
+def _estimated_max_hr(user: User) -> Optional[int]:
+    if user.birth_year:
+        return 220 - (datetime.now().year - user.birth_year)
+    return None
+
+
+@router.get("/", response_model=ProfileOut)
+async def get_profile(current_user: User = Depends(get_current_user)):
+    return {**{c.name: getattr(current_user, c.name)
+               for c in User.__table__.columns},
+            "estimated_max_hr": _estimated_max_hr(current_user)}
+
+
+@router.patch("/", response_model=ProfileOut)
+async def update_profile(
+    body: ProfileUpdate,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if body.max_heart_rate is not None:
+        if not (100 <= body.max_heart_rate <= 250):
+            raise HTTPException(400, "Max HR must be 100–250")
+        current_user.max_heart_rate = body.max_heart_rate
+    if body.resting_heart_rate is not None:
+        if not (20 <= body.resting_heart_rate <= 120):
+            raise HTTPException(400, "Resting HR must be 20–120")
+        current_user.resting_heart_rate = body.resting_heart_rate
+    if body.birth_year is not None:
+        if not (1920 <= body.birth_year <= 2010):
+            raise HTTPException(400, "Invalid birth year")
+        current_user.birth_year = body.birth_year
+    if body.height_cm is not None:
+        if not (50 <= body.height_cm <= 300):
+            raise HTTPException(400, "Height must be 50–300 cm")
+        current_user.height_cm = body.height_cm
+
+    await db.commit()
+    await db.refresh(current_user)
+    return {**{c.name: getattr(current_user, c.name)
+               for c in User.__table__.columns},
+            "estimated_max_hr": _estimated_max_hr(current_user)}
+
+
+# ── Password change ────────────────────────────────────────────────────────
+
+class PasswordChange(BaseModel):
+    current_password: str
+    new_password: str
+
+
+@router.post("/change-password")
+async def change_password(
+    body: PasswordChange,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if not current_user.hashed_password:
+        raise HTTPException(400, "Account uses passkey login — no password to change")
+    if not verify_password(body.current_password, current_user.hashed_password):
+        raise HTTPException(400, "Current password is incorrect")
+    if len(body.new_password) < 8:
+        raise HTTPException(400, "New password must be at least 8 characters")
+    current_user.hashed_password = hash_password(body.new_password)
+    await db.commit()
+    return {"status": "ok"}
+
+
+# ── PocketID configuration (admin only) ────────────────────────────────────
+
+class PocketIDConfig(BaseModel):
+    issuer: Optional[str] = None
+    client_id: Optional[str] = None
+    client_secret: Optional[str] = None
+
+
+@router.get("/pocketid-config")
+async def get_pocketid_config(current_user: User = Depends(get_current_user)):
+    if not current_user.is_admin:
+        raise HTTPException(403, "Admin only")
+    from app.core.config import settings
+    # Show DB config if set, fall back to env
+    issuer = current_user.pocketid_issuer or settings.pocketid_issuer
+    client_id = current_user.pocketid_client_id or settings.pocketid_client_id
+    return {
+        "issuer": issuer or "",
+        "client_id": client_id or "",
+        "client_secret_set": bool(current_user.pocketid_client_secret or settings.pocketid_client_secret),
+        "enabled": bool(issuer and client_id),
+    }
+
+
+@router.post("/pocketid-config")
+async def save_pocketid_config(
+    body: PocketIDConfig,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if not current_user.is_admin:
+        raise HTTPException(403, "Admin only")
+    if body.issuer is not None:
+        current_user.pocketid_issuer = body.issuer.rstrip("/") if body.issuer else None
+    if body.client_id is not None:
+        current_user.pocketid_client_id = body.client_id or None
+    if body.client_secret is not None:
+        current_user.pocketid_client_secret = body.client_secret or None
+    await db.commit()
+    return {"status": "ok"}
+
+
+# ── Weight log ─────────────────────────────────────────────────────────────
+
+class WeightEntry(BaseModel):
+    date: datetime
+    weight_kg: float
+    body_fat_pct: Optional[float] = None
+    note: Optional[str] = None
+
+
+class WeightOut(BaseModel):
+    id: int
+    date: datetime
+    weight_kg: float
+    body_fat_pct: Optional[float]
+    note: Optional[str]
+
+    class Config:
+        from_attributes = True
+
+
+@router.get("/weight", response_model=List[WeightOut])
+async def list_weight(
+    limit: int = 365,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    result = await db.execute(
+        select(WeightLog)
+        .where(WeightLog.user_id == current_user.id)
+        .order_by(desc(WeightLog.date))
+        .limit(limit)
+    )
+    return result.scalars().all()
+
+
+@router.post("/weight", response_model=WeightOut)
+async def log_weight(
+    body: WeightEntry,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    if not (20 <= body.weight_kg <= 500):
+        raise HTTPException(400, "Weight must be 20–500 kg")
+    entry = WeightLog(
+        user_id=current_user.id,
+        date=body.date,
+        weight_kg=body.weight_kg,
+        body_fat_pct=body.body_fat_pct,
+        note=body.note,
+    )
+    db.add(entry)
+    await db.commit()
+    await db.refresh(entry)
+    return entry
+
+
+@router.delete("/weight/{entry_id}", status_code=204)
+async def delete_weight(
+    entry_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    result = await db.execute(
+        select(WeightLog).where(
+            WeightLog.id == entry_id,
+            WeightLog.user_id == current_user.id,
+        )
+    )
+    entry = result.scalar_one_or_none()
+    if not entry:
+        raise HTTPException(404, "Not found")
+    await db.delete(entry)
+    await db.commit()

backend/app/api/routes.py

@@ -3,7 +3,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select, desc
 from pydantic import BaseModel
 from typing import Optional, List
-from datetime import datetime
+from datetime import datetime, timedelta, timezone
 
 from app.core.database import get_db
 from app.core.security import get_current_user
@@ -23,7 +23,7 @@ class RouteCreate(BaseModel):
     name: str
     description: Optional[str] = None
     sport_type: Optional[str] = None
-    activity_id: int  # use this activity as the reference route
+    activity_id: int
 
 
 class RouteOut(BaseModel):
@@ -34,6 +34,7 @@ class RouteOut(BaseModel):
     reference_polyline: Optional[str]
     bounding_box: Optional[dict]
     distance_m: Optional[float]
+    auto_detected: Optional[bool]
     created_at: datetime
 
     class Config:
@@ -64,13 +65,44 @@ async def list_routes(
     return result.scalars().all()
 
 
+@router.get("/recent-activities")
+async def recent_activities_for_route(
+    days: int = Query(14, ge=1, le=90),
+    sport_type: Optional[str] = None,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+):
+    """Return recent activities for the route creation dropdown."""
+    cutoff = datetime.now(timezone.utc) - timedelta(days=days)
+    q = select(Activity).where(
+        Activity.user_id == current_user.id,
+        Activity.start_time >= cutoff,
+        Activity.sport_type != "swimming",
+    )
+    if sport_type:
+        q = q.where(Activity.sport_type == sport_type)
+    q = q.order_by(desc(Activity.start_time)).limit(50)
+    result = await db.execute(q)
+    activities = result.scalars().all()
+    return [
+        {
+            "id": a.id,
+            "name": a.name,
+            "sport_type": a.sport_type,
+            "start_time": a.start_time,
+            "distance_m": a.distance_m,
+            "duration_s": a.duration_s,
+        }
+        for a in activities
+    ]
+
+
 @router.post("/", response_model=RouteOut)
 async def create_route(
     body: RouteCreate,
     db: AsyncSession = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ):
-    # Load the reference activity
     act_result = await db.execute(
         select(Activity).where(
             Activity.id == body.activity_id,
@@ -89,11 +121,10 @@ async def create_route(
         reference_polyline=activity.polyline,
         bounding_box=activity.bounding_box,
         distance_m=activity.distance_m,
+        auto_detected=False,
     )
     db.add(route)
     await db.flush()
-
-    # Link this activity to the route
     activity.named_route_id = route.id
     await db.commit()
     await db.refresh(route)
@@ -124,7 +155,6 @@ async def route_activities(
     db: AsyncSession = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ):
-    """All activities on this named route, ordered fastest first."""
     result = await db.execute(
         select(Activity).where(
             Activity.named_route_id == route_id,
@@ -153,7 +183,6 @@ async def assign_activity_to_route(
     db: AsyncSession = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ):
-    """Manually assign an activity to a named route."""
     activity_id = body.get("activity_id")
     act_result = await db.execute(
         select(Activity).where(
@@ -164,7 +193,6 @@ async def assign_activity_to_route(
     activity = act_result.scalar_one_or_none()
     if not activity:
         raise HTTPException(status_code=404, detail="Activity not found")
-
     activity.named_route_id = route_id
     await db.commit()
     return {"status": "ok"}

backend/app/core/config.py

@@ -36,4 +36,4 @@ class Settings(BaseSettings):
         case_sensitive = False
 
 
-settings = Settings()
+settings = Settings()

backend/app/core/database.py

@@ -44,4 +44,4 @@ async def get_db():
             await session.rollback()
             raise
         finally:
-            await session.close()
+            await session.close()

backend/app/main.py

@@ -6,7 +6,7 @@ import asyncio
 
 from app.core.database import engine, AsyncSessionLocal, Base
 from app.core.config import settings
-from app.api import auth, activities, routes, health, records, upload
+from app.api import auth, activities, routes, health, records, upload, profile
 
 
 async def init_db():
@@ -97,8 +97,9 @@ app.include_router(routes.router, prefix="/api/routes", tags=["routes"])
 app.include_router(health.router, prefix="/api/health-metrics", tags=["health"])
 app.include_router(records.router, prefix="/api/records", tags=["records"])
 app.include_router(upload.router, prefix="/api/upload", tags=["upload"])
+app.include_router(profile.router, prefix="/api/profile", tags=["profile"])
 
 
 @app.get("/health")
 async def healthcheck():
-    return {"status": "ok"}
+    return {"status": "ok"}

backend/app/models/user.py

@@ -22,9 +22,39 @@ class User(Base):
     pocketid_sub = Column(String(256), unique=True, nullable=True)
     created_at = Column(DateTime(timezone=True), default=now_utc)
 
+    # Health profile
+    max_heart_rate = Column(Integer, nullable=True)
+    resting_heart_rate = Column(Integer, nullable=True)
+    birth_year = Column(Integer, nullable=True)
+    height_cm = Column(Float, nullable=True)
+
+    # PocketID config (stored per-user so admin can set via UI)
+    pocketid_issuer = Column(String(512), nullable=True)
+    pocketid_client_id = Column(String(256), nullable=True)
+    pocketid_client_secret = Column(String(256), nullable=True)
+
     activities = relationship("Activity", back_populates="user", cascade="all, delete-orphan")
     health_metrics = relationship("HealthMetric", back_populates="user", cascade="all, delete-orphan")
     named_routes = relationship("NamedRoute", back_populates="user", cascade="all, delete-orphan")
+    weight_logs = relationship("WeightLog", back_populates="user", cascade="all, delete-orphan")
+
+
+class WeightLog(Base):
+    """Manual weight entries separate from health_metrics for easy tracking."""
+    __tablename__ = "weight_logs"
+
+    id = Column(Integer, primary_key=True)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False, index=True)
+    date = Column(DateTime(timezone=True), nullable=False)
+    weight_kg = Column(Float, nullable=False)
+    body_fat_pct = Column(Float, nullable=True)
+    note = Column(String(256), nullable=True)
+
+    __table_args__ = (
+        Index("ix_weight_user_date", "user_id", "date"),
+    )
+
+    user = relationship("User", back_populates="weight_logs")
 
 
 class Activity(Base):
@@ -68,11 +98,6 @@ class Activity(Base):
 
 
 class ActivityDataPoint(Base):
-    """
-    TimescaleDB hypertable - one row per second of activity data.
-    Composite primary key (activity_id, timestamp) satisfies TimescaleDB's
-    requirement that the partition column be part of the primary key.
-    """
     __tablename__ = "activity_data_points"
 
     activity_id = Column(Integer, ForeignKey("activities.id"), nullable=False, primary_key=True)
@@ -118,6 +143,7 @@ class NamedRoute(Base):
     reference_polyline = Column(Text, nullable=True)
     bounding_box = Column(JSON, nullable=True)
     distance_m = Column(Float, nullable=True)
+    auto_detected = Column(Boolean, default=False)
     created_at = Column(DateTime(timezone=True), default=now_utc)
 
     user = relationship("User", back_populates="named_routes")
@@ -198,4 +224,4 @@ class HealthMetric(Base):
         Index("ix_health_user_date", "user_id", "date"),
     )
 
-    user = relationship("User", back_populates="health_metrics")
+    user = relationship("User", back_populates="health_metrics")

backend/app/services/fit_parser.py

@@ -1,21 +1,24 @@
 """
-Parses Garmin .fit files and GPX files into normalized activity data.
-Handles full Strava and Garmin data export archives.
+FIT and GPX file parser using:
+- Official Garmin FIT Python SDK (garmin-fit-sdk) for .fit files
+- gpxpy for .gpx files
+
+The official SDK correctly handles scale/offset, component expansion,
+semicircle-to-degree conversion, and HR message merging.
 """
-import os
-import zipfile
-import json
 import math
 from pathlib import Path
-from datetime import datetime, timezone
+from datetime import datetime, timezone, timedelta
 from typing import Optional
-import fitparse
 import gpxpy
 import polyline as polyline_lib
 
 
+FIT_EPOCH_S = 631065600
+
+
 def haversine_distance(lat1, lon1, lat2, lon2) -> float:
-    """Returns distance in metres between two GPS points."""
+    """Distance in metres between two GPS points."""
     R = 6371000
     phi1, phi2 = math.radians(lat1), math.radians(lat2)
     dphi = math.radians(lat2 - lat1)
@@ -24,106 +27,100 @@ def haversine_distance(lat1, lon1, lat2, lon2) -> float:
     return 2 * R * math.asin(math.sqrt(a))
 
 
-def semicircles_to_degrees(sc: int) -> float:
-    return sc * (180 / 2**31)
+def _safe_float(val) -> Optional[float]:
+    try:
+        return float(val) if val is not None else None
+    except (TypeError, ValueError):
+        return None
+
+
+def _bounding_box(coords: list) -> Optional[dict]:
+    if not coords:
+        return None
+    lats = [c[0] for c in coords]
+    lons = [c[1] for c in coords]
+    return {"min_lat": min(lats), "max_lat": max(lats),
+            "min_lon": min(lons), "max_lon": max(lons)}
 
 
 def parse_fit_file(filepath: str) -> dict:
-    """Parse a Garmin .fit file and return normalized activity dict."""
-    fit = fitparse.FitFile(filepath)
+    """Parse a Garmin .fit activity file using the official Garmin SDK."""
+    from garmin_fit_sdk import Decoder, Stream
 
-    data_points = []
-    laps = []
     session = {}
+    records = []
+    laps = []
 
-    for record in fit.get_messages():
-        name = record.name
+    def listener(mesg_num: int, msg: dict):
+        nonlocal session
+        if mesg_num == 18:   # session
+            session = msg
+        elif mesg_num == 20:  # record
+            records.append(msg)
+        elif mesg_num == 19:  # lap
+            laps.append(msg)
 
-        if name == "session":
-            for f in record:
-                session[f.name] = f.value
+    stream = Stream.from_file(filepath)
+    decoder = Decoder(stream)
+    decoder.read(
+        apply_scale_and_offset=True,
+        convert_datetimes_to_dates=True,
+        convert_types_to_strings=True,
+        enable_crc_check=False,
+        expand_sub_fields=True,
+        expand_components=True,
+        merge_heart_rates=True,
+        mesg_listener=listener,
+    )
 
-        elif name == "lap":
-            lap = {}
-            for f in record:
-                lap[f.name] = f.value
-            laps.append(lap)
-
-        elif name == "record":
-            point = {}
-            for f in record:
-                point[f.name] = f.value
-            if point:
-                # Convert semicircles to degrees
-                if "position_lat" in point and point["position_lat"] is not None:
-                    point["position_lat"] = semicircles_to_degrees(point["position_lat"])
-                if "position_long" in point and point["position_long"] is not None:
-                    point["position_long"] = semicircles_to_degrees(point["position_long"])
-                data_points.append(point)
-
-    # Build normalized output
+    # Map sport type
     sport = str(session.get("sport", "generic")).lower()
     sport_map = {
         "running": "running", "cycling": "cycling", "swimming": "swimming",
         "hiking": "hiking", "walking": "walking", "generic": "other",
         "open_water_swimming": "swimming", "trail_running": "running",
+        "e_biking": "cycling",
     }
     sport_type = sport_map.get(sport, sport)
 
     start_time = session.get("start_time")
-    if start_time and start_time.tzinfo is None:
+    if isinstance(start_time, datetime) and start_time.tzinfo is None:
         start_time = start_time.replace(tzinfo=timezone.utc)
 
-    # Build GPS track for polyline
+    # Build GPS track
     coords = [
-        (p["position_lat"], p["position_long"])
-        for p in data_points
-        if p.get("position_lat") is not None and p.get("position_long") is not None
+        (r["position_lat"], r["position_long"])
+        for r in records
+        if r.get("position_lat") is not None and r.get("position_long") is not None
     ]
-
     encoded_polyline = polyline_lib.encode(coords) if coords else None
     bounding_box = _bounding_box(coords)
 
-    # Calculate cumulative distance if not in FIT
-    cumulative_dist = 0.0
-    prev_lat, prev_lon = None, None
+    # Normalize data points
     normalized_points = []
-    for p in data_points:
-        ts = p.get("timestamp")
-        if ts and ts.tzinfo is None:
+    for r in records:
+        ts = r.get("timestamp")
+        if isinstance(ts, datetime) and ts.tzinfo is None:
             ts = ts.replace(tzinfo=timezone.utc)
 
-        lat = p.get("position_lat")
-        lon = p.get("position_long")
-
-        dist = p.get("distance")
-        if dist is None and lat and lon and prev_lat and prev_lon:
-            cumulative_dist += haversine_distance(prev_lat, prev_lon, lat, lon)
-            dist = cumulative_dist
-        elif dist is not None:
-            cumulative_dist = float(dist)
-
-        if lat and lon:
-            prev_lat, prev_lon = lat, lon
-
         normalized_points.append({
             "timestamp": ts.isoformat() if ts else None,
-            "latitude": lat,
-            "longitude": lon,
-            "altitude_m": p.get("altitude"),
-            "heart_rate": p.get("heart_rate"),
-            "cadence": p.get("cadence"),
-            "speed_ms": p.get("speed"),
-            "power": p.get("power"),
-            "temperature_c": p.get("temperature"),
-            "distance_m": dist,
+            "latitude": r.get("position_lat"),
+            "longitude": r.get("position_long"),
+            "altitude_m": r.get("altitude") or r.get("enhanced_altitude"),
+            "heart_rate": r.get("heart_rate"),
+            "cadence": r.get("cadence") or r.get("fractional_cadence"),
+            "speed_ms": r.get("speed") or r.get("enhanced_speed"),
+            "power": r.get("power"),
+            "temperature_c": r.get("temperature"),
+            "distance_m": r.get("distance"),
         })
 
-    # Parse laps
+    # Normalize laps
     normalized_laps = []
     for i, lap in enumerate(laps):
         ls = lap.get("start_time")
-        if ls and ls.tzinfo is None:
+        if isinstance(ls, datetime) and ls.tzinfo is None:
             ls = ls.replace(tzinfo=timezone.utc)
         normalized_laps.append({
             "lap_number": i + 1,
@@ -132,13 +129,17 @@ def parse_fit_file(filepath: str) -> dict:
             "distance_m": _safe_float(lap.get("total_distance")),
             "avg_heart_rate": _safe_float(lap.get("avg_heart_rate")),
             "avg_cadence": _safe_float(lap.get("avg_cadence")),
-            "avg_speed_ms": _safe_float(lap.get("avg_speed")),
+            "avg_speed_ms": _safe_float(lap.get("avg_speed") or lap.get("enhanced_avg_speed")),
             "avg_power": _safe_float(lap.get("avg_power")),
         })
 
+    # Build activity name
+    name = session.get("sport", "Activity").title()
+    if start_time:
+        name += " " + start_time.strftime("%Y-%m-%d")
+
     return {
-        "name": session.get("sport", "Activity").title() + " " + (
-            start_time.strftime("%Y-%m-%d") if start_time else ""),
+        "name": name,
         "sport_type": sport_type,
         "start_time": start_time.isoformat() if start_time else None,
         "distance_m": _safe_float(session.get("total_distance")),
@@ -150,12 +151,12 @@ def parse_fit_file(filepath: str) -> dict:
         "avg_cadence": _safe_float(session.get("avg_cadence")),
         "avg_power": _safe_float(session.get("avg_power")),
         "normalized_power": _safe_float(session.get("normalized_power")),
-        "avg_speed_ms": _safe_float(session.get("avg_speed")),
-        "max_speed_ms": _safe_float(session.get("max_speed")),
+        "avg_speed_ms": _safe_float(session.get("avg_speed") or session.get("enhanced_avg_speed")),
+        "max_speed_ms": _safe_float(session.get("max_speed") or session.get("enhanced_max_speed")),
         "avg_temperature_c": _safe_float(session.get("avg_temperature")),
         "calories": _safe_float(session.get("total_calories")),
         "training_stress_score": _safe_float(session.get("training_stress_score")),
-        "vo2max_estimate": _safe_float(session.get("estimated_sweat_loss")),  # varies by device
+        "vo2max_estimate": _safe_float(session.get("total_training_effect")),
         "polyline": encoded_polyline,
         "bounding_box": bounding_box,
         "source_type": "fit",
@@ -165,13 +166,12 @@ def parse_fit_file(filepath: str) -> dict:
 
 
 def parse_gpx_file(filepath: str) -> dict:
-    """Parse a GPX file into normalized activity dict."""
+    """Parse a GPX file."""
     with open(filepath) as f:
         gpx = gpxpy.parse(f)
 
     data_points = []
     track = gpx.tracks[0] if gpx.tracks else None
-
     if not track:
         raise ValueError("No tracks found in GPX file")
 
@@ -204,7 +204,6 @@ def parse_gpx_file(filepath: str) -> dict:
                 "distance_m": None,
             })
 
-    # Calculate distance and elevation
     coords = [(p["latitude"], p["longitude"]) for p in data_points
               if p["latitude"] and p["longitude"]]
     encoded_polyline = polyline_lib.encode(coords) if coords else None
@@ -220,6 +219,7 @@ def parse_gpx_file(filepath: str) -> dict:
             prev = (p["latitude"], p["longitude"])
         p["distance_m"] = total_dist
 
+    # Elevation gain/loss
     uphill, downhill = 0.0, 0.0
     alts = [p["altitude_m"] for p in data_points if p["altitude_m"]]
     for i in range(1, len(alts)):
@@ -235,7 +235,7 @@ def parse_gpx_file(filepath: str) -> dict:
     end_dt = datetime.fromisoformat(data_points[-1]["timestamp"]) if data_points else None
     duration = (end_dt - start_dt).total_seconds() if (start_dt and end_dt) else None
 
-    sport = "running"  # GPX doesn't always include sport; default to running
+    sport = "running"
     if track.type:
         sport = track.type.lower()
 
@@ -266,76 +266,42 @@ def parse_gpx_file(filepath: str) -> dict:
     }
 
 
-def parse_strava_export(export_dir: str) -> list[dict]:
+def calculate_hr_zones(data_points: list, user_max_hr: float) -> dict:
     """
-    Parse a full Strava data export directory.
-    Structure: activities.csv + activities/ folder with .gpx/.fit.gz files
+    Calculate % time in each HR zone using the user's configured max HR.
+
+    Zones follow the standard 5-zone model as % of max HR:
+      Z1 Recovery:  < 60%
+      Z2 Base:      60 - 70%
+      Z3 Tempo:     70 - 80%
+      Z4 Threshold: 80 - 90%
+      Z5 Max:       > 90%
+
+    user_max_hr should be the user's actual physiological max HR, NOT the
+    highest HR recorded in this activity. Using activity max shifts all zones
+    upward and makes easy runs look harder than they are.
     """
-    activities = []
-    activities_dir = Path(export_dir) / "activities"
-
-    if not activities_dir.exists():
-        return activities
-
-    for fname in sorted(activities_dir.iterdir()):
-        if fname.suffix in (".fit", ".gpx"):
-            try:
-                if fname.suffix == ".fit":
-                    act = parse_fit_file(str(fname))
-                else:
-                    act = parse_gpx_file(str(fname))
-                act["source_type"] = "strava_" + fname.suffix[1:]
-                activities.append(act)
-            except Exception as e:
-                print(f"Error parsing {fname}: {e}")
-
-    return activities
-
-
-def calculate_hr_zones(data_points: list[dict], max_hr: float) -> dict:
-    """Calculate percentage of time spent in each HR zone."""
-    if not max_hr:
+    if not user_max_hr or user_max_hr < 100:
         return {}
 
-    zones = {"z1": 0, "z2": 0, "z3": 0, "z4": 0, "z5": 0}
-    zone_bounds = [0.5, 0.6, 0.7, 0.8, 0.9, 1.0]
+    zone_bounds = [0.0, 0.60, 0.70, 0.80, 0.90, 1.01]
+    zone_keys = ["z1", "z2", "z3", "z4", "z5"]
+    zones = {k: 0 for k in zone_keys}
     total = 0
 
     for p in data_points:
         hr = p.get("heart_rate")
-        if not hr:
+        if not hr or hr < 20:
             continue
-        pct = hr / max_hr
+        pct = hr / user_max_hr
         total += 1
-        if pct < zone_bounds[1]:
-            zones["z1"] += 1
-        elif pct < zone_bounds[2]:
-            zones["z2"] += 1
-        elif pct < zone_bounds[3]:
-            zones["z3"] += 1
-        elif pct < zone_bounds[4]:
-            zones["z4"] += 1
+        for i, key in enumerate(zone_keys):
+            if zone_bounds[i] <= pct < zone_bounds[i+1]:
+                zones[key] += 1
+                break
         else:
-            zones["z5"] += 1
+            zones["z5"] += 1  # anything above 90% goes to z5
 
     if total:
         return {k: round(v / total * 100, 1) for k, v in zones.items()}
     return {}
-
-
-def _safe_float(val) -> Optional[float]:
-    try:
-        return float(val) if val is not None else None
-    except (TypeError, ValueError):
-        return None
-
-
-def _bounding_box(coords: list[tuple]) -> Optional[dict]:
-    if not coords:
-        return None
-    lats = [c[0] for c in coords]
-    lons = [c[1] for c in coords]
-    return {
-        "min_lat": min(lats), "max_lat": max(lats),
-        "min_lon": min(lons), "max_lon": max(lons),
-    }

backend/app/services/wellness_parser.py

@@ -306,4 +306,4 @@ def parse_wellness_fit(file_path: str) -> dict:
             "sleep_awake_s": sleep_awake_s,
         }
 
-    return {"days": result, "error": None}
+    return {"days": result, "error": None}

backend/app/workers/celery_app.py

@@ -4,4 +4,4 @@ can be started with: celery -A app.workers.celery_app worker
 """
 from app.workers.tasks import celery_app
 
-__all__ = ["celery_app"]
+__all__ = ["celery_app"]

backend/app/workers/tasks.py

@@ -82,9 +82,24 @@ def process_activity_file(self, file_path: str, user_id: int, source_type: str):
             if existing:
                 return {"activity_id": existing.id, "status": "duplicate"}
 
+        # Get user's configured max HR for accurate zone calculation
+        # Falls back to: user-set value → 220-age → activity max → 190
+        from app.models.user import User as UserModel
+        user_obj = db.execute(select(UserModel).where(UserModel.id == user_id)).scalar_one_or_none()
+        user_max_hr = None
+        if user_obj:
+            user_max_hr = user_obj.max_heart_rate
+            if not user_max_hr and user_obj.birth_year:
+                from datetime import date as _date
+                age = _date.today().year - user_obj.birth_year
+                user_max_hr = 220 - age
+        if not user_max_hr:
+            # Last resort: use activity max but warn this may shift zones
+            user_max_hr = parsed.get("max_heart_rate") or 190
+
         hr_zones = calculate_hr_zones(
             parsed.get("data_points", []),
-            parsed.get("max_heart_rate") or 190
+            user_max_hr
         )
 
         start_time = datetime.fromisoformat(parsed["start_time"])
@@ -169,6 +184,9 @@ def process_activity_file(self, file_path: str, user_id: int, source_type: str):
         activity_id = activity.id
 
     compute_personal_records.delay(activity_id, user_id, parsed)
+    # Auto route detection for running and cycling
+    if parsed.get("sport_type") in ("running", "cycling", "hiking", "walking"):
+        detect_route.delay(activity_id, user_id)
     return {"activity_id": activity_id, "status": "ok"}
 
 
@@ -176,161 +194,156 @@ def process_activity_file(self, file_path: str, user_id: int, source_type: str):
 def parse_wellness_fit(file_path: str, user_id: int):
     """
     Parse a Garmin wellness/metrics FIT file and upsert into health_metrics.
-    These files contain resting HR, HRV, sleep, stress, SpO2 etc.
+    Uses wellness_parser which handles standard FIT + Garmin proprietary messages.
     """
-    import fitparse
+    from app.services.wellness_parser import parse_wellness_fit as _parse
     from app.core.database import SyncSessionLocal
-    from app.models.user import HealthMetric
+    from datetime import datetime, timezone
     from sqlalchemy import text
-    from datetime import datetime, timezone, date
 
-    try:
-        fit = fitparse.FitFile(file_path)
-    except Exception as e:
-        return {"status": "error", "error": str(e)}
+    result = _parse(file_path)
+    if result.get("error"):
+        return {"status": "error", "error": result["error"], "file": file_path}
 
-    # Collect all monitoring/daily summary records keyed by date
-    daily = {}  # date -> dict of fields
-
-    def get_or_create_day(d: date) -> dict:
-        if d not in daily:
-            daily[d] = {}
-        return daily[d]
-
-    for record in fit.get_messages():
-        name = record.name
-        fields = {f.name: f.value for f in record if f.value is not None}
-
-        if name == "monitoring_info":
-            ts = fields.get("timestamp") or fields.get("local_timestamp")
-            if ts:
-                d = ts.date() if hasattr(ts, "date") else None
-                if d:
-                    day = get_or_create_day(d)
-                    day.setdefault("resting_hr", fields.get("resting_heart_rate"))
-
-        elif name == "monitoring":
-            ts = fields.get("timestamp") or fields.get("local_timestamp")
-            if not ts:
-                continue
-            d = ts.date() if hasattr(ts, "date") else None
-            if not d:
-                continue
-            day = get_or_create_day(d)
-            # Accumulate steps (they're stored as increments)
-            if "steps" in fields:
-                day["steps"] = day.get("steps", 0) + int(fields["steps"])
-            if "heart_rate" in fields:
-                hrs = day.setdefault("heart_rates", [])
-                hrs.append(int(fields["heart_rate"]))
-            if "stress_level_value" in fields:
-                stresses = day.setdefault("stress_values", [])
-                stresses.append(int(fields["stress_level_value"]))
-
-        elif name == "hrv_status_summary":
-            ts = fields.get("timestamp")
-            if ts:
-                d = ts.date() if hasattr(ts, "date") else None
-                if d:
-                    day = get_or_create_day(d)
-                    day.setdefault("hrv_nightly_avg", fields.get("weekly_average"))
-                    day.setdefault("hrv_5min_high", fields.get("last_night_5_min_high"))
-                    day.setdefault("hrv_status", str(fields.get("hrv_status", "")))
-
-        elif name == "sleep_level":
-            ts = fields.get("timestamp")
-            if ts:
-                d = ts.date() if hasattr(ts, "date") else None
-                if d:
-                    day = get_or_create_day(d)
-                    levels = day.setdefault("sleep_levels", [])
-                    levels.append(fields.get("sleep_level"))
-
-        elif name == "stress":
-            ts = fields.get("timestamp")
-            if ts:
-                d = ts.date() if hasattr(ts, "date") else None
-                if d:
-                    day = get_or_create_day(d)
-                    if "stress_level_value" in fields:
-                        stresses = day.setdefault("stress_values", [])
-                        stresses.append(int(fields["stress_level_value"]))
-
-        elif name == "spo2_data":
-            ts = fields.get("timestamp")
-            if ts:
-                d = ts.date() if hasattr(ts, "date") else None
-                if d:
-                    day = get_or_create_day(d)
-                    readings = day.setdefault("spo2_readings", [])
-                    if "spo2_percent" in fields:
-                        readings.append(fields["spo2_percent"])
-
-    if not daily:
+    days = result.get("days", {})
+    if not days:
         return {"status": "no_data", "file": file_path}
 
-    # Upsert into health_metrics using ON CONFLICT to handle concurrent workers
     with SyncSessionLocal() as db:
-        for day_date, data in daily.items():
-            hrs = data.pop("heart_rates", [])
-            stresses = data.pop("stress_values", [])
-            spo2s = data.pop("spo2_readings", [])
-            sleep_levels = data.pop("sleep_levels", [])
-
-            resting_hr = data.get("resting_hr")
-            avg_hr = (sum(hrs) / len(hrs)) if hrs else None
-            avg_stress = (sum(stresses) / len(stresses)) if stresses else None
-            spo2_avg = (sum(spo2s) / len(spo2s)) if spo2s else None
-
-            # Garmin sleep levels: 0=unmeasurable, 1=awake, 2=light, 3=deep, 4=rem
-            sleep_deep_s = sum(30 for l in sleep_levels if l == 3) if sleep_levels else None
-            sleep_light_s = sum(30 for l in sleep_levels if l == 2) if sleep_levels else None
-            sleep_rem_s = sum(30 for l in sleep_levels if l == 4) if sleep_levels else None
-            sleep_awake_s = sum(30 for l in sleep_levels if l == 1) if sleep_levels else None
-            sleep_duration_s = (
-                (sleep_deep_s or 0) + (sleep_light_s or 0) + (sleep_rem_s or 0)
-            ) or None
-
+        for day_date, data in days.items():
             date_dt = datetime(day_date.year, day_date.month, day_date.day, tzinfo=timezone.utc)
-
-            # ON CONFLICT upsert - race-condition safe, COALESCE preserves existing data
             db.execute(text("""
-                INSERT INTO health_metrics (user_id, date, resting_hr, avg_hr_day, avg_stress,
-                    spo2_avg, hrv_nightly_avg, hrv_5min_high, hrv_status, steps,
+                INSERT INTO health_metrics (user_id, date, resting_hr, avg_hr_day, max_hr_day,
+                    avg_stress, spo2_avg, hrv_nightly_avg, hrv_5min_high, hrv_status,
+                    steps, floors_climbed, active_calories, total_calories,
                     sleep_duration_s, sleep_deep_s, sleep_light_s, sleep_rem_s, sleep_awake_s)
-                VALUES (:user_id, :date, :resting_hr, :avg_hr, :avg_stress,
-                    :spo2_avg, :hrv_avg, :hrv_high, :hrv_status, :steps,
+                VALUES (:user_id, :date, :resting_hr, :avg_hr, :max_hr,
+                    :avg_stress, :spo2_avg, :hrv_avg, :hrv_high, :hrv_status,
+                    :steps, :floors, :active_cal, :total_cal,
                     :sleep_dur, :sleep_deep, :sleep_light, :sleep_rem, :sleep_awake)
                 ON CONFLICT (user_id, date) DO UPDATE SET
-                    resting_hr      = COALESCE(EXCLUDED.resting_hr, health_metrics.resting_hr),
-                    avg_hr_day      = COALESCE(EXCLUDED.avg_hr_day, health_metrics.avg_hr_day),
-                    avg_stress      = COALESCE(EXCLUDED.avg_stress, health_metrics.avg_stress),
-                    spo2_avg        = COALESCE(EXCLUDED.spo2_avg, health_metrics.spo2_avg),
-                    hrv_nightly_avg = COALESCE(EXCLUDED.hrv_nightly_avg, health_metrics.hrv_nightly_avg),
-                    hrv_5min_high   = COALESCE(EXCLUDED.hrv_5min_high, health_metrics.hrv_5min_high),
-                    hrv_status      = COALESCE(EXCLUDED.hrv_status, health_metrics.hrv_status),
-                    steps           = COALESCE(EXCLUDED.steps, health_metrics.steps),
+                    resting_hr       = COALESCE(EXCLUDED.resting_hr, health_metrics.resting_hr),
+                    avg_hr_day       = COALESCE(EXCLUDED.avg_hr_day, health_metrics.avg_hr_day),
+                    max_hr_day       = COALESCE(EXCLUDED.max_hr_day, health_metrics.max_hr_day),
+                    avg_stress       = COALESCE(EXCLUDED.avg_stress, health_metrics.avg_stress),
+                    spo2_avg         = COALESCE(EXCLUDED.spo2_avg, health_metrics.spo2_avg),
+                    hrv_nightly_avg  = COALESCE(EXCLUDED.hrv_nightly_avg, health_metrics.hrv_nightly_avg),
+                    hrv_5min_high    = COALESCE(EXCLUDED.hrv_5min_high, health_metrics.hrv_5min_high),
+                    hrv_status       = COALESCE(EXCLUDED.hrv_status, health_metrics.hrv_status),
+                    steps            = COALESCE(EXCLUDED.steps, health_metrics.steps),
+                    floors_climbed   = COALESCE(EXCLUDED.floors_climbed, health_metrics.floors_climbed),
+                    active_calories  = COALESCE(EXCLUDED.active_calories, health_metrics.active_calories),
+                    total_calories   = COALESCE(EXCLUDED.total_calories, health_metrics.total_calories),
                     sleep_duration_s = COALESCE(EXCLUDED.sleep_duration_s, health_metrics.sleep_duration_s),
-                    sleep_deep_s    = COALESCE(EXCLUDED.sleep_deep_s, health_metrics.sleep_deep_s),
-                    sleep_light_s   = COALESCE(EXCLUDED.sleep_light_s, health_metrics.sleep_light_s),
-                    sleep_rem_s     = COALESCE(EXCLUDED.sleep_rem_s, health_metrics.sleep_rem_s),
-                    sleep_awake_s   = COALESCE(EXCLUDED.sleep_awake_s, health_metrics.sleep_awake_s)
+                    sleep_deep_s     = COALESCE(EXCLUDED.sleep_deep_s, health_metrics.sleep_deep_s),
+                    sleep_light_s    = COALESCE(EXCLUDED.sleep_light_s, health_metrics.sleep_light_s),
+                    sleep_rem_s      = COALESCE(EXCLUDED.sleep_rem_s, health_metrics.sleep_rem_s),
+                    sleep_awake_s    = COALESCE(EXCLUDED.sleep_awake_s, health_metrics.sleep_awake_s)
             """), {
                 "user_id": user_id, "date": date_dt,
-                "resting_hr": resting_hr, "avg_hr": avg_hr,
-                "avg_stress": avg_stress, "spo2_avg": spo2_avg,
+                "resting_hr": data.get("resting_hr"),
+                "avg_hr": data.get("avg_hr_day"),
+                "max_hr": data.get("max_hr_day"),
+                "avg_stress": data.get("avg_stress"),
+                "spo2_avg": data.get("spo2_avg"),
                 "hrv_avg": data.get("hrv_nightly_avg"),
                 "hrv_high": data.get("hrv_5min_high"),
                 "hrv_status": data.get("hrv_status"),
                 "steps": data.get("steps"),
-                "sleep_dur": sleep_duration_s, "sleep_deep": sleep_deep_s,
-                "sleep_light": sleep_light_s, "sleep_rem": sleep_rem_s,
-                "sleep_awake": sleep_awake_s,
+                "floors": data.get("floors_climbed"),
+                "active_cal": data.get("active_calories"),
+                "total_cal": data.get("total_calories"),
+                "sleep_dur": data.get("sleep_duration_s"),
+                "sleep_deep": data.get("sleep_deep_s"),
+                "sleep_light": data.get("sleep_light_s"),
+                "sleep_rem": data.get("sleep_rem_s"),
+                "sleep_awake": data.get("sleep_awake_s"),
             })
-
         db.commit()
 
-    return {"status": "ok", "days_processed": len(daily), "file": file_path}
+    return {"status": "ok", "days_processed": len(days), "file": file_path}
+
+@celery_app.task(name="detect_route")
+def detect_route(activity_id: int, user_id: int):
+    """
+    After importing an activity, check if it matches any existing named routes.
+    If two+ unassigned activities match each other, auto-create a named route.
+    """
+    from app.services.route_matcher import routes_are_similar
+    from app.core.database import SyncSessionLocal
+    from app.models.user import Activity, NamedRoute
+    from sqlalchemy import select
+
+    with SyncSessionLocal() as db:
+        # Get the new activity
+        new_act = db.execute(
+            select(Activity).where(Activity.id == activity_id)
+        ).scalar_one_or_none()
+        if not new_act or not new_act.polyline:
+            return {"status": "no_polyline"}
+
+        # Already assigned to a route?
+        if new_act.named_route_id:
+            return {"status": "already_assigned"}
+
+        # Check against existing named routes first
+        routes = db.execute(
+            select(NamedRoute).where(
+                NamedRoute.user_id == user_id,
+                NamedRoute.sport_type == new_act.sport_type,
+            )
+        ).scalars().all()
+
+        for route in routes:
+            if route.reference_polyline and routes_are_similar(
+                new_act.polyline, route.reference_polyline,
+                new_act.bounding_box, route.bounding_box,
+            ):
+                new_act.named_route_id = route.id
+                db.commit()
+                return {"status": "matched_existing", "route_id": route.id}
+
+        # No existing route matched - check unassigned activities for a match
+        candidates = db.execute(
+            select(Activity).where(
+                Activity.user_id == user_id,
+                Activity.sport_type == new_act.sport_type,
+                Activity.named_route_id == None,
+                Activity.id != activity_id,
+                Activity.polyline != None,
+                # Within 20% distance
+                Activity.distance_m >= (new_act.distance_m or 0) * 0.8,
+                Activity.distance_m <= (new_act.distance_m or 0) * 1.2,
+            )
+        ).scalars().all()
+
+        for candidate in candidates:
+            if routes_are_similar(
+                new_act.polyline, candidate.polyline,
+                new_act.bounding_box, candidate.bounding_box,
+            ):
+                # Auto-create a route from the older activity
+                older = candidate if candidate.start_time < new_act.start_time else new_act
+                newer = new_act if candidate.start_time < new_act.start_time else candidate
+
+                route_name = f"{older.sport_type.title()} route {older.start_time.strftime('%d %b %Y')}"
+                new_route = NamedRoute(
+                    user_id=user_id,
+                    name=route_name,
+                    sport_type=older.sport_type,
+                    reference_polyline=older.polyline,
+                    bounding_box=older.bounding_box,
+                    distance_m=older.distance_m,
+                    auto_detected=True,
+                )
+                db.add(new_route)
+                db.flush()
+                older.named_route_id = new_route.id
+                newer.named_route_id = new_route.id
+                db.commit()
+                return {"status": "auto_created", "route_id": new_route.id}
+
+    return {"status": "no_match"}
 
 
 @celery_app.task(name="compute_personal_records")
@@ -435,4 +448,4 @@ def process_garmin_health_zip(zip_path: str, user_id: int):
                         "spo2": data.get("avgSpo2"),
                     })
 
-        db.commit()
+        db.commit()