cleared logs on login, to avoid stale data

Reviewed-on: #35

.gitea/workflows/refresh_showcase_data.yml

@@ -0,0 +1,43 @@
+name: Refresh Showcase Data
+
+on:
+  schedule:
+    # Run daily at 3 AM UTC
+    - cron: "0 3 * * *"
+  workflow_dispatch: # Allow manual triggering
+
+jobs:
+  refresh-data:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ vars.PYTHON_VERSION }}
+
+      - name: Install uv
+        run: curl -LsSf https://astral.sh/uv/install.sh | sh
+
+      - name: Install dependencies
+        run: |
+          uv sync --no-dev --all-extras
+
+      - name: Run showcase data seeding script
+        env:
+          ADMIN_USERNAME: ${{ secrets.ADMIN_USERNAME }}
+          ADMIN_PASSWORD: ${{ secrets.ADMIN_PASSWORD }}
+          POSTGRES_URI: ${{ secrets.POSTGRES_URI }}
+        run: |
+          uv run python scripts/seed_showcase_data.py
+
+      - name: Notify on success
+        if: success()
+        run: echo "✅ Showcase data refreshed successfully"
+
+      - name: Notify on failure
+        if: failure()
+        run: echo "❌ Failed to refresh showcase data"

pyproject.toml

@@ -71,3 +71,7 @@ markers = [
 [[tool.mypy.overrides]]
 module = "redis.*"
 ignore_missing_imports = true
+
+[[tool.mypy.overrides]]
+module = "showcase_data_definitions.*"
+ignore_missing_imports = true

scripts/seed_showcase_data.py

@@ -0,0 +1,185 @@
+"""Seed test data into the database for demo purposes."""
+
+import sys
+from pathlib import Path
+from datetime import datetime
+
+# Add parent directory to path to import baby_monitor modules
+sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
+
+# Import after path is set up
+from baby_monitor.repositories.dependencies.get_database import (  # noqa: E402
+    get_database,
+    init_db,
+)
+from baby_monitor.repositories.user.sqlite_user import (  # noqa: E402
+    DatabaseUserRepository,
+)
+from baby_monitor.repositories.child.sqlite_child import (  # noqa: E402
+    DatabaseChildRepository,
+)
+from baby_monitor.repositories.feeding.sqlite_feeding import (  # noqa: E402
+    DatabaseFeedingRepository,
+)
+from baby_monitor.repositories.diaper_change.sqlite_diaper_change import (  # noqa: E402, E501
+    DatabaseDiaperChangeRepository,
+)
+from baby_monitor.repositories.sleep.sqlite_sleep import (  # noqa: E402
+    DatabaseSleepRepository,
+)
+from baby_monitor.routers.auth import hash_password  # noqa: E402
+from showcase_data_definitions import generate_showcase_data  # noqa: E402
+
+
+def seed_database(reference_time: datetime | None = None) -> None:
+    """
+    Seed the database with test data.
+
+    This function is idempotent - it will check if test users exist
+    and either create them or update timestamps of existing data.
+
+    Args:
+        reference_time: The "now" time to use for generating timestamps.
+            Defaults to current time.
+    """
+    # Initialize database
+    init_db()
+    db = next(get_database())
+
+    try:
+        # Initialize repositories
+        user_repo = DatabaseUserRepository(db)
+        child_repo = DatabaseChildRepository(db)
+        feeding_repo = DatabaseFeedingRepository(db)
+        diaper_repo = DatabaseDiaperChangeRepository(db)
+        sleep_repo = DatabaseSleepRepository(db)
+
+        # Generate showcase data
+        test_data = generate_showcase_data(reference_time)
+
+        print("Starting database seeding...")
+        print(f"Reference time: {test_data['reference_time']}")
+
+        # Create or get showcase users
+        user_ids = []
+        for user_data in test_data["users"]:
+            # Check if user exists
+            existing_user = user_repo.get_by_username(user_data["username"])
+
+            if existing_user:
+                print(f"✓ User '{user_data['username']}' already exists")
+                user_ids.append(existing_user["id"])
+            else:
+                # Create new user
+                hashed_pw = hash_password(user_data["password"])
+                user_id = user_repo.create(
+                    username=user_data["username"],
+                    hashed_password=hashed_pw,
+                )
+                user_ids.append(user_id["id"])
+                print(f"✓ Created user '{user_data['username']}'")
+
+        # Create or get shared child
+        child_data = test_data["child"]
+
+        # Check if child exists for first user
+        existing_children = child_repo.get_by_user_id(user_ids[0])
+        child_id: int | None = None
+
+        # Look for existing child with matching name
+        for child in existing_children:
+            if child["name"] == child_data["name"]:
+                child_id = child["id"]
+                print(f"✓ Child '{child_data['name']}' already exists")
+                break
+
+        if child_id is None:
+            # Create new child
+            created_child = child_repo.create(
+                name=child_data["name"],
+                birth_time=child_data["birth_time"],
+                birth_weight=child_data["birth_weight"],
+                user_id=user_ids[0],
+            )
+            child_id = created_child["id"]
+            print(f"✓ Created child '{child_data['name']}'")
+
+        # Ensure child_id is set
+        assert child_id is not None, "Child ID must be set at this point"
+
+        # Share child with second user if not already shared
+        parent_ids = child_repo.get_parent_ids(child_id)
+        if user_ids[1] not in parent_ids:
+            child_repo.add_parent(child_id, user_ids[1])
+            msg = f"✓ Shared child with '{test_data['users'][1]['username']}'"
+            print(msg)
+
+        # Clear existing logs to avoid duplicates
+        print("Clearing existing logs...")
+
+        # Get all logs for this child
+        existing_feedings = feeding_repo.get_by_child_id(child_id)
+        for feeding in existing_feedings:
+            feeding_repo.delete(feeding["id"])
+
+        existing_diapers = diaper_repo.get_by_child_id(child_id)
+        for diaper in existing_diapers:
+            diaper_repo.delete(diaper["id"])
+
+        existing_sleep = sleep_repo.get_by_child_id(child_id)
+        for sleep in existing_sleep:
+            sleep_repo.delete(sleep["id"])
+
+        print("✓ Cleared existing logs")
+
+        # Add feeding logs
+        print(f"Adding {len(test_data['feedings'])} feeding logs...")
+        for feeding in test_data["feedings"]:
+            feeding_repo.create(
+                child_id=child_id,
+                start_time=feeding["start_time"],
+                end_time=feeding["end_time"],
+                feeding_type=feeding["feeding_type"],
+            )
+        print(f"✓ Added {len(test_data['feedings'])} feedings")
+
+        # Add diaper changes
+        print(f"Adding {len(test_data['diapers'])} diaper changes...")
+        for diaper in test_data["diapers"]:
+            diaper_repo.create(
+                child_id=child_id,
+                change_time=diaper["time"],
+                poop_color=diaper.get("poop_color"),
+                poop_amount=diaper.get("poop_amount"),
+                pee_color=diaper.get("pee_color"),
+                pee_amount=diaper.get("pee_amount"),
+            )
+        print(f"✓ Added {len(test_data['diapers'])} diaper changes")
+
+        # Add sleep sessions
+        print(f"Adding {len(test_data['sleep'])} sleep sessions...")
+        for sleep in test_data["sleep"]:
+            sleep_repo.create(
+                child_id=child_id,
+                start_time=sleep["start_time"],
+                end_time=sleep["end_time"],
+            )
+        print(f"✓ Added {len(test_data['sleep'])} sleep sessions")
+
+        db.commit()
+        print("\n✅ Database seeding completed successfully!")
+        print("\nTest user credentials:")
+        print(f"  Username: {test_data['users'][0]['username']}")
+        print(f"  Password: {test_data['users'][0]['password']}")
+        print("  (Both users share the same password)")
+
+    except Exception as e:
+        db.rollback()
+        print(f"\n❌ Error seeding database: {e}")
+        raise
+    finally:
+        db.close()
+
+
+if __name__ == "__main__":
+    seed_database()

scripts/showcase_data_definitions.py

@@ -0,0 +1,278 @@
+"""Definition of showcase data to be used for presenting the app."""
+
+from datetime import datetime, timedelta
+import random
+
+# User credentials
+SHOWCASE_USERS = [
+    {
+        "username": "user",
+        "password": "demo123",  # Will be hashed when inserted
+    },
+    {
+        "username": "user2",
+        "password": "demo123",  # Will be hashed when inserted
+    },
+]
+
+# Shared child (14 days old)
+CHILD_AGE_DAYS = 14
+
+
+def get_child_data(reference_time: datetime) -> dict:
+    """Get child data with birth time relative to reference time."""
+    birth_time = reference_time - timedelta(days=CHILD_AGE_DAYS)
+    return {
+        "name": "Emma Rose",
+        "birth_time": birth_time,
+        "birth_weight": 3420,  # grams (7.5 lbs)
+    }
+
+
+def get_feeding_schedule(reference_time: datetime) -> list[dict]:
+    """
+    Generate realistic feeding schedule for the last 14 days.
+
+    Newborns feed every 2-3 hours initially, gradually spacing out
+    to 3-4 hours.
+    """
+    feedings: list[dict] = []
+    current_time = reference_time - timedelta(days=CHILD_AGE_DAYS)
+    end_time = reference_time
+
+    feeding_types = ["left_breast", "right_breast", "bottle"]
+
+    # Day-by-day feeding patterns
+    day_number = 0
+    while current_time < end_time:
+        age_in_days = day_number
+
+        # Newborns feed more frequently
+        if age_in_days < 3:
+            interval_hours = random.uniform(2, 2.5)
+            duration_minutes = random.randint(15, 25)
+        elif age_in_days < 7:
+            interval_hours = random.uniform(2.5, 3)
+            duration_minutes = random.randint(20, 30)
+        else:
+            interval_hours = random.uniform(3, 3.5)
+            duration_minutes = random.randint(20, 35)
+
+        # Alternate between breasts and occasional bottle
+        if random.random() < 0.2:  # 20% bottle feeding
+            feeding_type = "bottle"
+        else:
+            # Alternate breasts
+            feeding_type = feeding_types[len(feedings) % 2]
+
+        start_time = current_time
+        end_time_feeding = start_time + timedelta(minutes=duration_minutes)
+
+        feedings.append(
+            {
+                "start_time": start_time,
+                "end_time": end_time_feeding,
+                "feeding_type": feeding_type,
+            }
+        )
+
+        current_time += timedelta(hours=interval_hours)
+
+        # Move to next day
+        prev_date = (current_time - timedelta(hours=interval_hours)).date()
+        if current_time.date() != prev_date:
+            day_number += 1
+
+    return feedings
+
+
+def get_diaper_changes(reference_time: datetime) -> list[dict]:
+    """
+    Generate realistic diaper changes for the last 14 days.
+
+    - First 2-3 days: Black/dark (meconium), minimal pee
+    - Days 3-5: Transition to yellow, more frequent
+    - Days 5+: Regular yellow stools, normal pee patterns
+    - 8-10 diaper changes per day initially, settling to 6-8
+    """
+    diapers = []
+    current_time = reference_time - timedelta(days=CHILD_AGE_DAYS)
+    end_time = reference_time
+
+    day_number = 0
+
+    while current_time < end_time:
+        age_in_days = day_number
+
+        # Determine number of diaper changes per day based on age
+        if age_in_days < 3:
+            changes_per_day = random.randint(8, 10)
+        elif age_in_days < 7:
+            changes_per_day = random.randint(7, 9)
+        else:
+            changes_per_day = random.randint(6, 8)
+
+        # Distribute changes throughout the day
+        day_start = current_time.replace(hour=0, minute=0, second=0, microsecond=0)
+        day_end = day_start + timedelta(days=1)
+
+        for _ in range(changes_per_day):
+            # Random time during the day
+            random_seconds = random.randint(0, 86400)
+            change_time = day_start + timedelta(seconds=random_seconds)
+
+            if change_time >= end_time:
+                break
+
+            # Determine diaper contents
+            has_poop = random.random() < 0.4  # 40% have poop
+            # 90% have pee, or always if no poop
+            has_pee = random.random() < 0.9 or not has_poop
+
+            diaper = {
+                "time": change_time,
+                "has_poop": has_poop,
+                "has_pee": has_pee,
+            }
+
+            # Poop characteristics based on age
+            if has_poop:
+                if age_in_days < 2:
+                    # Meconium phase
+                    diaper["poop_color"] = "black"
+                    diaper["poop_amount"] = "light"
+                elif age_in_days < 4:
+                    # Transition phase
+                    colors = ["black", "green", "yellow"]
+                    diaper["poop_color"] = random.choice(colors)
+                    amounts = ["light", "medium"]
+                    diaper["poop_amount"] = random.choice(amounts)
+                else:
+                    # Normal phase
+                    colors = ["yellow", "yellow", "yellow", "green"]
+                    diaper["poop_color"] = random.choice(colors)
+                    # Amount increases with age
+                    if age_in_days < 7:
+                        amounts = ["light", "medium"]
+                        diaper["poop_amount"] = random.choice(amounts)
+                    else:
+                        amounts = ["medium", "heavy"]
+                        diaper["poop_amount"] = random.choice(amounts)
+
+            # Pee characteristics based on age
+            if has_pee:
+                if age_in_days < 2:
+                    # Very light pee initially
+                    diaper["pee_amount"] = "light"
+                    diaper["pee_color"] = random.choice(["clear", "yellow"])
+                elif age_in_days < 5:
+                    # Increasing output
+                    diaper["pee_amount"] = random.choice(["light", "medium"])
+                    diaper["pee_color"] = random.choice(["clear", "yellow"])
+                else:
+                    # Normal output
+                    if age_in_days < 10:
+                        amounts = ["medium", "medium", "heavy"]
+                        diaper["pee_amount"] = random.choice(amounts)
+                    else:
+                        amounts = ["medium", "heavy", "heavy"]
+                        diaper["pee_amount"] = random.choice(amounts)
+                    colors = ["clear", "yellow", "yellow"]
+                    diaper["pee_color"] = random.choice(colors)
+
+            diapers.append(diaper)
+
+        day_number += 1
+        current_time = day_end
+
+    # Sort by time (type: ignore for mypy - we know time is datetime)
+    diapers.sort(
+        key=lambda x: x["time"]  # type: ignore[arg-type,return-value]
+    )
+    return diapers
+
+
+def get_sleep_sessions(reference_time: datetime) -> list[dict]:
+    """
+    Generate realistic sleep patterns for the last 14 days.
+
+    Newborns sleep 16-18 hours per day in short bursts (30min - 4 hours).
+    Sleep gradually consolidates over time.
+    """
+    sleep_sessions = []
+    current_time = reference_time - timedelta(days=CHILD_AGE_DAYS)
+    end_time = reference_time
+
+    day_number = 0
+
+    while current_time < end_time:
+        age_in_days = day_number
+
+        # Sleep patterns evolve with age
+        if age_in_days < 3:
+            # Very short, frequent naps
+            avg_wake_time = 1.5  # hours
+            sleep_duration_range = (30, 120)  # minutes
+        elif age_in_days < 7:
+            # Slightly longer sleep periods
+            avg_wake_time = 2
+            sleep_duration_range = (45, 180)
+        else:
+            # More consolidated sleep
+            avg_wake_time = 2.5
+            sleep_duration_range = (60, 240)
+
+        # Random wake time with variation
+        wake_minutes = random.randint(int(avg_wake_time * 45), int(avg_wake_time * 75))
+
+        # Sleep start time
+        start_time = current_time + timedelta(minutes=wake_minutes)
+
+        if start_time >= end_time:
+            break
+
+        # Sleep duration
+        duration_minutes = random.randint(*sleep_duration_range)
+
+        # Longer sleep at night
+        if 20 <= start_time.hour or start_time.hour < 6:
+            duration_minutes = int(duration_minutes * 1.3)
+
+        end_time_sleep = start_time + timedelta(minutes=duration_minutes)
+
+        sleep_sessions.append(
+            {
+                "start_time": start_time,
+                "end_time": end_time_sleep,
+            }
+        )
+
+        current_time = end_time_sleep
+        birth_time = reference_time - timedelta(days=CHILD_AGE_DAYS)
+        day_number = (current_time - birth_time).days
+
+    return sleep_sessions
+
+
+def generate_showcase_data(reference_time: datetime | None = None) -> dict:
+    """
+    Generate all test data with timestamps relative to reference time.
+
+    Args:
+        reference_time: The "now" time to use as reference.
+            Defaults to current time.
+
+    Returns:
+        Dictionary containing all test data
+    """
+    if reference_time is None:
+        reference_time = datetime.now()
+
+    return {
+        "users": SHOWCASE_USERS,
+        "child": get_child_data(reference_time),
+        "feedings": get_feeding_schedule(reference_time),
+        "diapers": get_diaper_changes(reference_time),
+        "sleep": get_sleep_sessions(reference_time),
+        "reference_time": reference_time,
+    }

src/baby_monitor/main.py

@@ -119,6 +119,12 @@ def serve_sleep() -> FileResponse:
     return FileResponse(static_path / "sleep.html")
 
 
+@app.get("/log-sleep.html", include_in_schema=False)
+def serve_log_sleep() -> FileResponse:
+    """Serve the log sleep page."""
+    return FileResponse(static_path / "log-sleep.html")
+
+
 @app.get("/settings.html", include_in_schema=False)
 def serve_settings() -> FileResponse:
     """Serve the settings page."""
@@ -137,6 +143,12 @@ def serve_menu_js() -> FileResponse:
     return FileResponse(static_path / "menu.js")
 
 
+@app.get("/auth-utils.js", include_in_schema=False)
+def serve_auth_utils_js() -> FileResponse:
+    """Serve the shared auth utilities JavaScript."""
+    return FileResponse(static_path / "auth-utils.js")
+
+
 @app.get("/api/")
 def read_root(token: Annotated[str, Depends(verify_token)]) -> dict:
     """API root endpoint (requires authentication)."""

src/baby_monitor/models/child.py

@@ -20,3 +20,5 @@ class ChildResponse(BaseModel):
     birth_time: datetime
     birth_weight: float
     created_at: datetime
+    parent_count: int | None = None
+    parent_usernames: list[str] | None = None

src/baby_monitor/models/sleep.py

@@ -9,6 +9,7 @@ class CreateSleepRequest(BaseModel):
 
     child_id: int = Field(..., gt=0)
     start_time: datetime
+    end_time: datetime | None = None
 
 
 class UpdateSleepRequest(BaseModel):

src/baby_monitor/repositories/dependencies/get_token_repository.py

@@ -6,7 +6,7 @@ import logging
 from baby_monitor.repositories.interfaces import (
     TokenRepositoryInterface,
 )
-from baby_monitor.repositories.token.memory_token import (
+from baby_monitor.repositories.token import (
     InMemoryTokenRepository,
 )
 
@@ -43,7 +43,7 @@ def _initialize_token_repository() -> TokenRepositoryInterface:
         ) from e
 
     try:
-        from baby_monitor.repositories.token.redis_token import (
+        from baby_monitor.repositories.token import (
             RedisTokenRepository,
         )
 

src/baby_monitor/repositories/interfaces/sleep_repository_interface.py

@@ -12,6 +12,7 @@ class SleepRepositoryInterface(ABC):
         self,
         child_id: int,
         start_time: datetime,
+        end_time: datetime | None = None,
     ) -> dict:
         """Create a new sleep log entry."""
 

src/baby_monitor/repositories/sleep/sqlite_sleep.py

@@ -27,12 +27,13 @@ class DatabaseSleepRepository(SleepRepositoryInterface):
         self,
         child_id: int,
         start_time: datetime,
+        end_time: datetime | None = None,
     ) -> dict:
         """Create a new sleep log entry."""
         sleep = Sleep(
             child_id=child_id,
             start_time=start_time,
-            end_time=None,
+            end_time=end_time,
         )
         self.db.add(sleep)
         self.db.commit()

src/baby_monitor/repositories/token/__init__.py

@@ -0,0 +1,11 @@
+"""Token repository implementations and configurations."""
+
+from .default_ttl import DEFAULT_TTL
+from .memory_token import InMemoryTokenRepository
+from .redis_token import RedisTokenRepository
+
+__all__ = [
+    "DEFAULT_TTL",
+    "InMemoryTokenRepository",
+    "RedisTokenRepository",
+]

src/baby_monitor/repositories/token/default_ttl.py

@@ -0,0 +1,3 @@
+"""Definition of Token default TTL."""
+
+DEFAULT_TTL = 28800  # seconds -> 8 hours

src/baby_monitor/repositories/token/memory_token.py

@@ -3,6 +3,7 @@
 from datetime import datetime, timedelta, UTC
 
 from baby_monitor.repositories.interfaces import TokenRepositoryInterface
+from baby_monitor.repositories.token import DEFAULT_TTL
 
 
 class InMemoryTokenRepository(TokenRepositoryInterface):
@@ -17,13 +18,16 @@ class InMemoryTokenRepository(TokenRepositoryInterface):
         # token -> (user_id, expiry_time)
         self._tokens: dict[str, tuple[int, datetime]] = {}
 
-    def store(self, token: str, user_id: int, ttl: int = 3600) -> None:
+    def store(self, token: str, user_id: int, ttl: int = DEFAULT_TTL) -> None:
         """Store a token with TTL (time to live in seconds)."""
         expiry = datetime.now(UTC) + timedelta(seconds=ttl)
         self._tokens[token] = (user_id, expiry)
 
     def verify(self, token: str) -> int | None:
-        """Verify token and return user_id if valid, None otherwise."""
+        """Verify token and return user_id if valid, None otherwise.
+
+        Implements sliding expiration: extends token lifetime on each verification.
+        """
         if token not in self._tokens:
             return None
 
@@ -34,6 +38,10 @@ class InMemoryTokenRepository(TokenRepositoryInterface):
             del self._tokens[token]
             return None
 
+        # Sliding expiration: extend the token lifetime
+        new_expiry = datetime.now(UTC) + timedelta(seconds=DEFAULT_TTL)
+        self._tokens[token] = (user_id, new_expiry)
+
         return user_id
 
     def invalidate(self, token: str) -> None:

src/baby_monitor/repositories/token/redis_token.py

@@ -3,14 +3,14 @@
 from typing import Any
 
 from baby_monitor.repositories.interfaces import TokenRepositoryInterface
+from baby_monitor.repositories.token import DEFAULT_TTL
 
 
 class RedisTokenRepository(TokenRepositoryInterface):
     """
     Redis-based token storage.
 
-    Requires redis package: pip install redis
-    Set REDIS_URI environment variable (e.g., redis://localhost:6379/0)
+    This implementation uses Redis to store tokens with TTL. Implements sliding expiration.
     """
 
     def __init__(self, redis_client: Any) -> None:
@@ -22,16 +22,21 @@ class RedisTokenRepository(TokenRepositoryInterface):
         """
         self.redis = redis_client
 
-    def store(self, token: str, user_id: int, ttl: int = 3600) -> None:
+    def store(self, token: str, user_id: int, ttl: int = DEFAULT_TTL) -> None:
         """Store a token with TTL (time to live in seconds)."""
         key = f"token:{token}"
         self.redis.setex(key, ttl, str(user_id))
 
     def verify(self, token: str) -> int | None:
-        """Verify token and return user_id if valid, None otherwise."""
+        """Verify token and return user_id if valid, None otherwise.
+
+        Implements sliding expiration: extends token lifetime on verification.
+        """
         key = f"token:{token}"
         user_id_str = self.redis.get(key)
         if user_id_str:
+            # Sliding expiration: extend the token lifetime
+            self.redis.expire(key, DEFAULT_TTL)
             return int(user_id_str)
         return None
 

src/baby_monitor/routers/child.py

@@ -11,10 +11,12 @@ from baby_monitor.routers.auth import verify_token
 from baby_monitor.repositories.interfaces import (
     ChildRepositoryInterface,
     ChildInvitationRepositoryInterface,
+    UserRepositoryInterface,
 )
 from baby_monitor.repositories.dependencies import (
     get_child_repository,
     get_child_invitation_repository,
+    get_user_repository,
 )
 
 router = APIRouter(prefix="/api/children", tags=["children"])
@@ -62,10 +64,29 @@ def create_child(
 def get_user_children(
     user_id: Annotated[int, Depends(verify_token)],
     child_repo: Annotated[ChildRepositoryInterface, Depends(get_child_repository)],
+    user_repo: Annotated[UserRepositoryInterface, Depends(get_user_repository)],
 ) -> list[ChildResponse]:
     """Get all children for the authenticated user."""
     children = child_repo.get_by_user_id(user_id)
-    return [ChildResponse(**child) for child in children]
+
+    # Add parent information to each child
+    result = []
+    for child in children:
+        child_data = child.copy()
+        parent_ids = child_repo.get_parent_ids(child["id"])
+        child_data["parent_count"] = len(parent_ids)
+
+        # Get usernames of all parents
+        parent_usernames = []
+        for parent_id in parent_ids:
+            parent = user_repo.get_by_id(parent_id)
+            if parent:
+                parent_usernames.append(parent["username"])
+        child_data["parent_usernames"] = parent_usernames
+
+        result.append(ChildResponse(**child_data))
+
+    return result
 
 
 @router.get("/{child_id}", response_model=ChildResponse)

src/baby_monitor/routers/sleep.py

@@ -36,6 +36,7 @@ def create_sleep(
     sleep = sleep_repo.create(
         child_id=request.child_id,
         start_time=request.start_time,
+        end_time=request.end_time,
     )
 
     return SleepResponse(**sleep)

src/baby_monitor/static/add-child.html

@@ -211,12 +211,10 @@
       </div>
     </div>
 
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Get child ID from URL if editing
       const urlParams = new URLSearchParams(window.location.search);
@@ -313,9 +311,9 @@
                 : "Child added successfully!",
               "success",
             );
-            // Redirect to home page after 1 second
+            // Redirect to settings page if editing, otherwise home page
             setTimeout(() => {
-              window.location.href = "/";
+              window.location.href = isEditMode ? "/settings.html" : "/";
             }, 1000);
           } else {
             showMessage(
@@ -338,7 +336,8 @@
       }
 
       function goBack() {
-        window.location.href = "/";
+        // Redirect to settings page if editing, otherwise home page
+        window.location.href = isEditMode ? "/settings.html" : "/";
       }
 
       function skipToHome() {

src/baby_monitor/static/admin.html

@@ -424,17 +424,15 @@
       </div>
     </div>
 
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated and is admin
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       let allUsers = [];
       let userToDelete = null;
 
-      // Verify user is admin and load data
+      // Load data
       fetch("/api/me", {
         headers: {
           Authorization: `Bearer ${token}`,

src/baby_monitor/static/auth-utils.js

@@ -0,0 +1,21 @@
+/**
+ * Redirect to login page with return URL
+ * @param {string} returnUrl - The URL to return to after login (defaults to current page)
+ */
+function redirectToLogin(returnUrl) {
+  const url = returnUrl || window.location.pathname + window.location.search;
+  window.location.href = `/login.html?return=${encodeURIComponent(url)}`;
+}
+
+/**
+ * Check if user has valid token, redirect to login if not
+ * @returns {string|null} - Returns token if valid, redirects to login if not
+ */
+function getToken() {
+  const token = localStorage.getItem("access_token");
+  if (!token) {
+    redirectToLogin();
+    return null;
+  }
+  return token;
+}

src/baby_monitor/static/diapers.html

@@ -266,12 +266,10 @@
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
     <script src="/menu.js"></script>
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Initialize burger menu
       initBurgerMenu({ includeHome: true });
@@ -280,7 +278,7 @@
       let allChildren = [];
       let currentDaysRange =
         parseInt(localStorage.getItem("lastDiaperTimeRange")) || 7;
-      let selectedChildId = null; // null means "All Children"
+      let selectedChildId = null; // null means show first/only child
 
       // Restore last selected child from localStorage
       const lastChildId = localStorage.getItem("lastDiaperChildFilter");
@@ -321,6 +319,11 @@
 
           if (response.ok) {
             allChildren = await response.json();
+
+            // Auto-select first child if no selection exists
+            if (selectedChildId === null && allChildren.length > 0) {
+              selectedChildId = allChildren[0].id;
+            }
           }
         } catch (error) {
           console.error("Error loading children:", error);
@@ -334,8 +337,7 @@
       }
 
       function onChildChange(event) {
-        selectedChildId =
-          event.target.value === "all" ? null : parseInt(event.target.value);
+        selectedChildId = parseInt(event.target.value);
         localStorage.setItem("lastDiaperChildFilter", event.target.value);
         displayDiaperChanges(allDiaperChanges);
       }
@@ -367,11 +369,25 @@
 
           content.innerHTML = `
             <div class="controls">
+              ${
+                allChildren.length === 1
+                  ? `
+                <label for="childDisplay">Child:</label>
+                <input
+                  type="text"
+                  id="childDisplay"
+                  value="${allChildren[0].name}"
+                  readonly
+                  style="background-color: #f5f5f5; cursor: default; padding: 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px;"
+                />
+              `
+                  : `
                 <label for="childFilter">Child:</label>
                 <select id="childFilter" onchange="onChildChange(event)">
-                <option value="all" ${selectedChildId === null ? "selected" : ""}>All Children</option>
                   ${childOptions}
                 </select>
+              `
+              }
 
               <label for="daysRange">Time Range:</label>
               <select id="daysRange" onchange="onDaysRangeChange(event)">

src/baby_monitor/static/feedings.html

@@ -303,12 +303,10 @@
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
     <script src="/menu.js"></script>
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Initialize burger menu
       initBurgerMenu({ includeHome: true });
@@ -317,7 +315,7 @@
       let allChildren = [];
       let currentDaysRange =
         parseInt(localStorage.getItem("lastFeedingTimeRange")) || 7;
-      let selectedChildId = null; // null means "All Children"
+      let selectedChildId = null; // null means show first/only child
       let barChartInstance = null;
 
       // Restore last selected child from localStorage
@@ -359,6 +357,11 @@
 
           if (response.ok) {
             allChildren = await response.json();
+
+            // Auto-select first child if no selection exists
+            if (selectedChildId === null && allChildren.length > 0) {
+              selectedChildId = allChildren[0].id;
+            }
           }
         } catch (error) {
           console.error("Error loading children:", error);
@@ -372,8 +375,7 @@
       }
 
       function onChildChange(event) {
-        selectedChildId =
-          event.target.value === "all" ? null : parseInt(event.target.value);
+        selectedChildId = parseInt(event.target.value);
         localStorage.setItem("lastFeedingChildFilter", event.target.value);
         displayFeedings(allFeedings);
       }
@@ -405,11 +407,25 @@
 
           content.innerHTML = `
             <div class="controls">
+              ${
+                allChildren.length === 1
+                  ? `
+                <label for="childDisplay">Child:</label>
+                <input
+                  type="text"
+                  id="childDisplay"
+                  value="${allChildren[0].name}"
+                  readonly
+                  style="background-color: #f5f5f5; cursor: default; padding: 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px;"
+                />
+              `
+                  : `
                 <label for="childFilter">Child:</label>
                 <select id="childFilter" onchange="onChildChange(event)">
-                <option value="all" ${selectedChildId === null ? "selected" : ""}>All Children</option>
                   ${childOptions}
                 </select>
+              `
+              }
 
               <label for="daysRange">Time Range:</label>
               <select id="daysRange" onchange="onDaysRangeChange(event)">

src/baby_monitor/static/index.html

@@ -236,32 +236,21 @@
     </div>
 
     <script src="/menu.js"></script>
+    <script src="/auth-utils.js"></script>
     <script>
-      const token = localStorage.getItem("access_token");
+      const token = getToken();
       const username = localStorage.getItem("username");
 
-      // Check if user is logged in
-      if (!token) {
-        window.location.href = "/login.html";
-      } else {
       // Fetch current user info including admin status
       fetch("/api/me", {
         headers: {
           Authorization: `Bearer ${token}`,
         },
       })
-          .then((response) => {
-            if (response.ok) {
-              return response.json();
-            } else {
-              // Token invalid, redirect to login
-              localStorage.removeItem("access_token");
-              localStorage.removeItem("username");
-              window.location.href = "/login.html";
-              throw new Error("Authentication failed");
-            }
-          })
+      .then((response) => response.json())
       .then((user) => {
+        if (!user) return; // Early exit if redirected
+
         // Initialize burger menu
         initBurgerMenu({
           includeHome: true,
@@ -288,7 +277,6 @@
       .catch((error) => {
         console.error("Error:", error);
       });
-      }
 
       function showNoChildrenMessage() {
         const content = document.getElementById("content");
@@ -510,7 +498,24 @@
         const childSelect = document.getElementById("modalChildId");
         const typeSelect = document.getElementById("modalFeedingType");
 
-        // Clear and populate child select
+        // Clear and populate child select or show single child
+        if (userChildren.length === 1) {
+          // Single child: replace dropdown with text display
+          const child = userChildren[0];
+          const formGroup = childSelect.parentElement;
+          formGroup.innerHTML = `
+            <label for="modalChildName">Child</label>
+            <input
+              type="text"
+              id="modalChildName"
+              value="${child.name}"
+              readonly
+              style="background-color: #f5f5f5; cursor: default;"
+            />
+            <input type="hidden" id="modalChildId" value="${child.id}" />
+          `;
+        } else {
+          // Multiple children: show dropdown
           childSelect.innerHTML = '<option value="">Select a child</option>';
           userChildren.forEach((child) => {
             const option = document.createElement("option");
@@ -522,6 +527,11 @@
           // Set defaults based on last feeding
           if (lastFeeding) {
             childSelect.value = lastFeeding.child_id;
+          }
+        }
+
+        // Set default feeding type based on last feeding
+        if (lastFeeding) {
           typeSelect.value = lastFeeding.feeding_type;
         }
 
@@ -633,7 +643,24 @@
         const modal = document.getElementById("startSleepModal");
         const childSelect = document.getElementById("modalSleepChildId");
 
-        // Clear and populate child select
+        // Clear and populate child select or show single child
+        if (userChildren.length === 1) {
+          // Single child: replace dropdown with text display
+          const child = userChildren[0];
+          const formGroup = childSelect.parentElement;
+          formGroup.innerHTML = `
+            <label for="modalSleepChildName">Child</label>
+            <input
+              type="text"
+              id="modalSleepChildName"
+              value="${child.name}"
+              readonly
+              style="background-color: #f5f5f5; cursor: default;"
+            />
+            <input type="hidden" id="modalSleepChildId" value="${child.id}" />
+          `;
+        } else {
+          // Multiple children: show dropdown
           childSelect.innerHTML = '<option value="">Select a child</option>';
           userChildren.forEach((child) => {
             const option = document.createElement("option");
@@ -646,6 +673,7 @@
           if (lastSleep) {
             childSelect.value = lastSleep.child_id;
           }
+        }
 
         modal.classList.add("show");
       }

src/baby_monitor/static/log-diaper.html

@@ -235,18 +235,26 @@
         <button
           type="button"
           class="button secondary"
-          onclick="window.location.href='/'"
+          onclick="window.location.href=getReturnUrl()"
         >
           Cancel
         </button>
       </form>
     </div>
 
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
+      const token = getToken();
+
+      // Determine return URL based on referrer
+      function getReturnUrl() {
+        const referrer = document.referrer;
+        if (referrer.includes("/diapers.html")) {
+          return "/diapers.html";
+        }
+        // Default to home page
+        return "/";
       }
 
       // Check if we're in edit mode
@@ -277,12 +285,32 @@
             children = await response.json();
             const select = document.getElementById("childSelect");
 
+            // Populate select dropdown or show single child
+            if (children.length === 1) {
+              // Single child: replace dropdown with text display
+              const child = children[0];
+              const formGroup = select.parentElement;
+              formGroup.innerHTML = `
+                <label for="childName">Child *</label>
+                <input
+                  type="text"
+                  id="childName"
+                  value="${child.name}"
+                  readonly
+                  style="background-color: #f5f5f5; cursor: default;"
+                />
+                <input type="hidden" id="childSelect" name="childSelect" value="${child.id}" />
+              `;
+            } else {
+              // Multiple children: show dropdown (clear the placeholder first)
+              select.innerHTML = "";
               children.forEach((child) => {
                 const option = document.createElement("option");
                 option.value = child.id;
                 option.textContent = child.name;
                 select.appendChild(option);
               });
+            }
 
             // If editing, load the diaper change data
             if (isEditMode) {
@@ -295,7 +323,8 @@
                 .toISOString()
                 .slice(0, 16);
 
-              // Load last used child from localStorage
+              // Load last used child from localStorage (only for multiple children)
+              if (children.length > 1) {
                 const lastDiaperChange = JSON.parse(
                   localStorage.getItem("lastDiaperChange") || "{}",
                 );
@@ -305,6 +334,7 @@
                     lastDiaperChange.child_id;
                 }
               }
+            }
           } else {
             showMessage("Failed to load children", "error");
           }
@@ -431,7 +461,7 @@
                 "success",
               );
               setTimeout(() => {
-                window.location.href = "/";
+                window.location.href = getReturnUrl();
               }, 1000);
             } else {
               const errorData = await response.json();

src/baby_monitor/static/log-feeding.html

@@ -199,11 +199,19 @@
       </form>
     </div>
 
+    <script src="/auth-utils.js"></script>
     <script>
       // Check if user is authenticated
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
+      const token = getToken();
+
+      // Determine return URL based on referrer
+      function getReturnUrl() {
+        const referrer = document.referrer;
+        if (referrer.includes("/feedings.html")) {
+          return "/feedings.html";
+        }
+        // Default to home page
+        return "/";
       }
 
       const form = document.getElementById("logFeedingForm");
@@ -259,13 +267,32 @@
               return;
             }
 
-            // Populate select dropdown
+            // Populate select dropdown or show single child
+            if (children.length === 1) {
+              // Single child: replace dropdown with text display
+              const child = children[0];
+              const formGroup = childSelect.parentElement;
+              formGroup.innerHTML = `
+                <label for="childName">Child</label>
+                <input
+                  type="text"
+                  id="childName"
+                  value="${child.name}"
+                  readonly
+                  style="background-color: #f5f5f5; cursor: default;"
+                />
+                <input type="hidden" id="childId" name="childId" value="${child.id}" />
+              `;
+            } else {
+              // Multiple children: show dropdown (clear placeholder first)
+              childSelect.innerHTML = "";
               children.forEach((child) => {
                 const option = document.createElement("option");
                 option.value = child.id;
                 option.textContent = child.name;
                 childSelect.appendChild(option);
               });
+            }
 
             // Show form, hide loading
             loadingDiv.style.display = "none";
@@ -369,9 +396,9 @@
                 : "Feeding logged successfully!",
               "success",
             );
-            // Redirect to feedings page after 1 second
+            // Redirect to appropriate page after 1 second
             setTimeout(() => {
-              window.location.href = "/feedings.html";
+              window.location.href = getReturnUrl();
             }, 1000);
           } else {
             showMessage(
@@ -394,7 +421,7 @@
       }
 
       function goBack() {
-        window.location.href = "/";
+        window.location.href = getReturnUrl();
       }
     </script>
   </body>

src/baby_monitor/static/log-sleep.html

@@ -0,0 +1,412 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Log Sleep - Baby Monitor</title>
+    <style>
+      * {
+        margin: 0;
+        padding: 0;
+        box-sizing: border-box;
+      }
+
+      body {
+        font-family:
+          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
+          Cantarell, sans-serif;
+        background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
+        min-height: 100vh;
+        display: flex;
+        justify-content: center;
+        align-items: center;
+        padding: 20px;
+      }
+
+      .container {
+        background: white;
+        border-radius: 12px;
+        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
+        padding: 40px;
+        max-width: 500px;
+        width: 100%;
+      }
+
+      h1 {
+        color: #333;
+        margin-bottom: 10px;
+        font-size: 28px;
+      }
+
+      .subtitle {
+        color: #666;
+        margin-bottom: 30px;
+        font-size: 14px;
+      }
+
+      .form-group {
+        margin-bottom: 20px;
+      }
+
+      label {
+        display: block;
+        margin-bottom: 8px;
+        color: #333;
+        font-weight: 600;
+        font-size: 14px;
+      }
+
+      input,
+      select {
+        width: 100%;
+        padding: 12px;
+        border: 1px solid #ddd;
+        border-radius: 6px;
+        font-size: 14px;
+        transition: border-color 0.2s;
+      }
+
+      input:focus,
+      select:focus {
+        outline: none;
+        border-color: #4facfe;
+      }
+
+      .button {
+        background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
+        color: white;
+        border: none;
+        padding: 12px 24px;
+        border-radius: 6px;
+        font-size: 16px;
+        font-weight: 600;
+        cursor: pointer;
+        transition:
+          transform 0.2s,
+          box-shadow 0.2s;
+        width: 100%;
+        margin-top: 10px;
+      }
+
+      .button:hover {
+        transform: translateY(-2px);
+        box-shadow: 0 4px 12px rgba(79, 172, 254, 0.4);
+      }
+
+      .button:active {
+        transform: translateY(0);
+      }
+
+      .button:disabled {
+        opacity: 0.6;
+        cursor: not-allowed;
+        transform: none;
+      }
+
+      .button.secondary {
+        background: #6c757d;
+        margin-top: 10px;
+      }
+
+      .button.secondary:hover {
+        box-shadow: 0 4px 12px rgba(108, 117, 125, 0.4);
+      }
+
+      .message {
+        padding: 12px;
+        border-radius: 6px;
+        margin-bottom: 20px;
+        display: none;
+      }
+
+      .message.show {
+        display: block;
+      }
+
+      .message.error {
+        background: #ffebee;
+        border-left: 4px solid #f44336;
+        color: #c62828;
+      }
+
+      .message.success {
+        background: #e8f5e9;
+        border-left: 4px solid #4caf50;
+        color: #2e7d32;
+      }
+
+      .help-text {
+        font-size: 12px;
+        color: #666;
+        margin-top: 4px;
+      }
+
+      .loading {
+        text-align: center;
+        padding: 20px;
+        color: #666;
+      }
+    </style>
+  </head>
+  <body>
+    <div class="container">
+      <h1>😴 Log Sleep</h1>
+      <p class="subtitle">Record a sleep session</p>
+
+      <div id="message" class="message"></div>
+
+      <div id="loadingChildren" class="loading">Loading children...</div>
+
+      <form id="logSleepForm" style="display: none">
+        <div class="form-group">
+          <label for="childId">Child *</label>
+          <select id="childId" name="childId" required>
+            <option value="">Select a child</option>
+          </select>
+        </div>
+
+        <div class="form-group">
+          <label for="startTime">Start Time *</label>
+          <input
+            type="datetime-local"
+            id="startTime"
+            name="startTime"
+            required
+          />
+          <p class="help-text">Defaults to current time</p>
+        </div>
+
+        <div class="form-group">
+          <label for="endTime">End Time</label>
+          <input type="datetime-local" id="endTime" name="endTime" />
+          <p class="help-text">Leave empty if sleep is ongoing</p>
+        </div>
+
+        <button type="submit" class="button" id="submitBtn">Log Sleep</button>
+        <button type="button" class="button secondary" onclick="goBack()">
+          Cancel
+        </button>
+      </form>
+    </div>
+
+    <script src="/auth-utils.js"></script>
+    <script>
+      // Check if user is authenticated
+      const token = getToken();
+
+      // Determine return URL based on referrer
+      function getReturnUrl() {
+        const referrer = document.referrer;
+        if (referrer.includes("/sleep.html")) {
+          return "/sleep.html";
+        }
+        // Default to home page
+        return "/";
+      }
+
+      const form = document.getElementById("logSleepForm");
+      const messageDiv = document.getElementById("message");
+      const submitBtn = document.getElementById("submitBtn");
+      const loadingDiv = document.getElementById("loadingChildren");
+      const childSelect = document.getElementById("childId");
+
+      // Check if we're editing an existing sleep session
+      const urlParams = new URLSearchParams(window.location.search);
+      const sleepId = urlParams.get("id");
+      const isEditMode = !!sleepId;
+
+      // Set default start time to now (only for new sleep sessions)
+      if (!isEditMode) {
+        const now = new Date();
+        const localDateTime = new Date(
+          now.getTime() - now.getTimezoneOffset() * 60000,
+        )
+          .toISOString()
+          .slice(0, 16);
+        document.getElementById("startTime").value = localDateTime;
+      }
+
+      // Update title and button text if editing
+      if (isEditMode) {
+        document.querySelector("h1").textContent = "😴 Edit Sleep";
+        document.querySelector(".subtitle").textContent =
+          "Update sleep session details";
+        submitBtn.textContent = "Update Sleep";
+      }
+
+      // Load user's children
+      async function loadChildren() {
+        try {
+          const response = await fetch("/api/children", {
+            headers: {
+              Authorization: `Bearer ${token}`,
+            },
+          });
+
+          if (response.ok) {
+            const children = await response.json();
+
+            if (children.length === 0) {
+              showMessage(
+                "No children found. Please add a child first.",
+                "error",
+              );
+              setTimeout(() => {
+                window.location.href = "/add-child.html";
+              }, 2000);
+              return;
+            }
+
+            // Populate select dropdown or show single child
+            if (children.length === 1) {
+              // Single child: replace dropdown with text display
+              const child = children[0];
+              const formGroup = childSelect.parentElement;
+              formGroup.innerHTML = `
+                <label for="childName">Child</label>
+                <input
+                  type="text"
+                  id="childName"
+                  value="${child.name}"
+                  readonly
+                  style="background-color: #f5f5f5; cursor: default;"
+                />
+                <input type="hidden" id="childId" name="childId" value="${child.id}" />
+              `;
+            } else {
+              // Multiple children: show dropdown (clear placeholder first)
+              childSelect.innerHTML = "";
+              children.forEach((child) => {
+                const option = document.createElement("option");
+                option.value = child.id;
+                option.textContent = child.name;
+                childSelect.appendChild(option);
+              });
+            }
+
+            // Show form, hide loading
+            loadingDiv.style.display = "none";
+            form.style.display = "block";
+
+            // If editing, load the sleep data
+            if (isEditMode) {
+              loadSleepData();
+            }
+          } else {
+            showMessage("Failed to load children", "error");
+          }
+        } catch (error) {
+          showMessage("Network error loading children", "error");
+        }
+      }
+
+      async function loadSleepData() {
+        try {
+          const response = await fetch(`/api/sleep/${sleepId}`, {
+            headers: {
+              Authorization: `Bearer ${token}`,
+            },
+          });
+
+          if (response.ok) {
+            const sleep = await response.json();
+
+            // Populate form with existing data
+            document.getElementById("childId").value = sleep.child_id;
+
+            // Format datetime for datetime-local input
+            const startTime = new Date(sleep.start_time);
+            const startLocalDateTime = new Date(
+              startTime.getTime() - startTime.getTimezoneOffset() * 60000,
+            )
+              .toISOString()
+              .slice(0, 16);
+            document.getElementById("startTime").value = startLocalDateTime;
+
+            if (sleep.end_time) {
+              const endTime = new Date(sleep.end_time);
+              const endLocalDateTime = new Date(
+                endTime.getTime() - endTime.getTimezoneOffset() * 60000,
+              )
+                .toISOString()
+                .slice(0, 16);
+              document.getElementById("endTime").value = endLocalDateTime;
+            }
+          } else {
+            showMessage("Failed to load sleep data", "error");
+          }
+        } catch (error) {
+          showMessage("Network error loading sleep", "error");
+        }
+      }
+
+      loadChildren();
+
+      form.addEventListener("submit", async (e) => {
+        e.preventDefault();
+
+        const childId = parseInt(document.getElementById("childId").value);
+        const startTime = document.getElementById("startTime").value;
+        const endTimeValue = document.getElementById("endTime").value;
+
+        // Disable button during request
+        submitBtn.disabled = true;
+        submitBtn.textContent = isEditMode ? "Updating..." : "Logging...";
+        messageDiv.classList.remove("show");
+
+        try {
+          const url = isEditMode ? `/api/sleep/${sleepId}` : "/api/sleep";
+          const method = isEditMode ? "PUT" : "POST";
+
+          const response = await fetch(url, {
+            method: method,
+            headers: {
+              "Content-Type": "application/json",
+              Authorization: `Bearer ${token}`,
+            },
+            body: JSON.stringify({
+              child_id: childId,
+              start_time: startTime,
+              end_time: endTimeValue || null,
+            }),
+          });
+
+          const data = await response.json();
+
+          if (response.ok) {
+            showMessage(
+              isEditMode
+                ? "Sleep updated successfully!"
+                : "Sleep logged successfully!",
+              "success",
+            );
+            // Redirect to appropriate page after 1 second
+            setTimeout(() => {
+              window.location.href = getReturnUrl();
+            }, 1000);
+          } else {
+            showMessage(
+              data.detail ||
+                `Failed to ${isEditMode ? "update" : "log"} sleep. Please try again.`,
+              "error",
+            );
+          }
+        } catch (error) {
+          showMessage("Network error. Please try again.", "error");
+        } finally {
+          submitBtn.disabled = false;
+          submitBtn.textContent = isEditMode ? "Update Sleep" : "Log Sleep";
+        }
+      });
+
+      function showMessage(text, type) {
+        messageDiv.textContent = text;
+        messageDiv.className = `message ${type} show`;
+      }
+
+      function goBack() {
+        window.location.href = getReturnUrl();
+      }
+    </script>
+  </body>
+</html>

src/baby_monitor/static/login.html

@@ -82,10 +82,36 @@
     </div>
 
     <script>
+      // Check if redirected due to expired session
+      const params = new URLSearchParams(window.location.search);
+      const returnUrl = params.get("return");
+      
       const form = document.getElementById("loginForm");
       const messageDiv = document.getElementById("message");
       const loginButton = document.getElementById("loginButton");
 
+      // Show session expired message if redirected from another page
+      if (returnUrl) {
+        showMessage("Your session has expired. Please log in again.", "error");
+      }
+
+      // Clear user-specific cache data on login
+      function clearUserCache() {
+        const keysToRemove = [
+          'lastDiaperChildFilter',
+          'lastFeedingChildFilter',
+          'lastSleepChildFilter',
+          'lastDiaperTimeRange',
+          'lastFeedingTimeRange'
+        ];
+        
+        keysToRemove.forEach(key => {
+          localStorage.removeItem(key);
+        });
+        
+        console.log('Cleared user cache on login');
+      }
+
       form.addEventListener("submit", async (e) => {
         e.preventDefault();
 
@@ -109,13 +135,23 @@
 
           if (response.ok) {
             showMessage(data.message, "success");
+            
             // Store token in localStorage
             localStorage.setItem("access_token", data.access_token);
             localStorage.setItem("username", data.username);
             
-            // Redirect based on is_admin from login response
+            // Clear stale user preferences from previous sessions
+            clearUserCache();
+
+            // Check for return URL parameter
+            const params = new URLSearchParams(window.location.search);
+            const returnUrl = params.get("return");
+            
+            // Redirect based on return URL or is_admin from login response
             setTimeout(() => {
-              if (data.is_admin === true) {
+              if (returnUrl) {
+                window.location.href = returnUrl;
+              } else if (data.is_admin === true) {
                 window.location.href = "/admin.html";
               } else {
                 window.location.href = "/";

src/baby_monitor/static/settings.html

@@ -469,11 +469,9 @@
     </div>
 
     <script src="/menu.js"></script>
+    <script src="/auth-utils.js"></script>
     <script>
-      const token = localStorage.getItem("access_token");
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Initialize burger menu
       initBurgerMenu({ includeHome: true });
@@ -495,7 +493,7 @@
             currentUser = await userResponse.json();
             document.getElementById("username").value = currentUser.username;
           } else {
-            window.location.href = "/login.html";
+            redirectToLogin();
             return;
           }
 
@@ -533,14 +531,23 @@
         container.innerHTML = `
           <div class="children-list">
             ${children
-              .map(
-                (child) => `
+              .map((child) => {
+                // Get list of other users (excluding current user)
+                const otherUsers =
+                  child.parent_usernames && child.parent_usernames.length > 1
+                    ? child.parent_usernames.filter(
+                        (username) => username !== currentUser.username,
+                      )
+                    : [];
+
+                return `
               <div class="child-card">
-                <h3>👶 ${child.name}</h3>
+                <h3 style="margin: 0;">👶 ${child.name}</h3>
                 <div class="child-info">
                   <p><strong>Birth Date:</strong> ${formatDate(child.birth_time)}</p>
                   <p><strong>Birth Weight:</strong> ${child.birth_weight}g</p>
                   <p><strong>Added:</strong> ${formatDate(child.created_at)}</p>
+                  ${otherUsers.length > 0 ? `<p><strong>Shared with:</strong> ${otherUsers.join(", ")}</p>` : ""}
                 </div>
                 <div class="child-actions">
                   <button class="button secondary" onclick="editChild(${child.id})">
@@ -551,8 +558,8 @@
                   </button>
                 </div>
               </div>
-            `,
-              )
+            `;
+              })
               .join("")}
           </div>
         `;
@@ -568,12 +575,17 @@
       }
 
       function editChild(childId) {
-        // Redirect to a child edit page or show a modal
-        // For now, just show an alert
         const child = children.find((c) => c.id === childId);
-        if (child) {
-          alert(`Edit functionality for ${child.name} coming soon!`);
-        }
+        if (!child) return;
+
+        // Redirect to add-child page with child data in query params
+        const params = new URLSearchParams({
+          id: child.id,
+          name: child.name,
+          birth_time: child.birth_time,
+          birth_weight: child.birth_weight,
+        });
+        window.location.href = `/add-child.html?${params.toString()}`;
       }
 
       async function shareChild(childId) {
@@ -838,8 +850,10 @@
           }
         });
 
-      // Load data on page load
+      // Load data on page load (only if authenticated)
+      if (token) {
         loadData();
+      }
     </script>
   </body>
 </html>

src/baby_monitor/static/sleep.html

@@ -313,13 +313,9 @@
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
     <script src="/menu.js"></script>
+    <script src="/auth-utils.js"></script>
     <script>
-      const token = localStorage.getItem("access_token");
-
-      // Check if user is logged in
-      if (!token) {
-        window.location.href = "/login.html";
-      }
+      const token = getToken();
 
       // Initialize burger menu
       initBurgerMenu({ includeHome: true });
@@ -328,10 +324,11 @@
       let allChildren = [];
       let selectedChildId = "";
 
-      // Filter change handlers
-      document
-        .getElementById("childFilter")
-        .addEventListener("change", function () {
+      // Filter change handlers (will be attached after children are loaded)
+      function attachChildFilterListener() {
+        const childFilter = document.getElementById("childFilter");
+        if (childFilter) {
+          childFilter.addEventListener("change", function () {
             selectedChildId = this.value;
             // Save selection to localStorage
             if (selectedChildId) {
@@ -341,14 +338,19 @@
             }
             renderCharts();
           });
+        }
+      }
 
-      document
-        .getElementById("timeRangeFilter")
-        .addEventListener("change", function () {
+      function attachTimeRangeListener() {
+        const timeRangeFilter = document.getElementById("timeRangeFilter");
+        if (timeRangeFilter) {
+          timeRangeFilter.addEventListener("change", function () {
             // Save selection to localStorage
             localStorage.setItem("lastSleepTimeRange", this.value);
-          loadData();
+            renderCharts();
           });
+        }
+      }
 
       async function loadData() {
         try {
@@ -365,19 +367,52 @@
 
           allChildren = await childrenResponse.json();
 
-          // Populate child filter
+          // Auto-select first child if available
+          if (allChildren.length > 0 && !selectedChildId) {
+            selectedChildId = allChildren[0].id;
+          }
+
+          // Populate child filter or show single child
+          const childFilterContainer = document.querySelector(".controls");
+          if (allChildren.length === 1) {
+            // Single child: show as read-only text
+            const child = allChildren[0];
+            childFilterContainer.innerHTML = `
+              <label for="childDisplay">Child:</label>
+              <input
+                type="text"
+                id="childDisplay"
+                value="${child.name}"
+                readonly
+                style="background-color: #f5f5f5; cursor: default; padding: 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px;"
+              />
+              
+              <label for="timeRangeFilter">Time Range:</label>
+              <select id="timeRangeFilter">
+                <option value="1">Last 24 hours</option>
+                <option value="3">Last 3 days</option>
+                <option value="7" selected>Last 7 days</option>
+                <option value="14">Last 14 days</option>
+                <option value="30">Last 30 days</option>
+                <option value="90">Last 90 days</option>
+              </select>
+            `;
+          } else {
+            // Multiple children: show dropdown
             const childFilter = document.getElementById("childFilter");
-          childFilter.innerHTML = '<option value="">All Children</option>';
+            childFilter.innerHTML = "";
             allChildren.forEach((child) => {
               const option = document.createElement("option");
               option.value = child.id;
               option.textContent = child.name;
               childFilter.appendChild(option);
             });
+          }
 
           // Restore last selected child from localStorage
           const lastChildId = localStorage.getItem("lastSleepChildFilter");
-          if (lastChildId) {
+          if (lastChildId && allChildren.length > 1) {
+            const childFilter = document.getElementById("childFilter");
             childFilter.value = lastChildId;
             selectedChildId = lastChildId;
           }
@@ -402,6 +437,14 @@
 
           allSleeps = await sleepResponse.json();
 
+          // Attach event listener for child filter if multiple children
+          if (allChildren.length > 1) {
+            attachChildFilterListener();
+          }
+
+          // Always attach time range listener after recreating the controls
+          attachTimeRangeListener();
+
           renderCharts();
         } catch (error) {
           console.error("Error loading data:", error);
@@ -517,7 +560,10 @@
           </div>
 
           <div class="list-container">
-            <h2>Recent Sleep Sessions</h2>
+            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px;">
+              <h2 style="margin: 0;">Recent Sleep Sessions</h2>
+              <button class="button" onclick="addManualSleep()" style="padding: 8px 16px; font-size: 14px;">➕ Add Manual Entry</button>
+            </div>
             <div class="sleep-list">
               ${filteredSleeps
                 .slice(0, 50)
@@ -1058,6 +1104,10 @@
         `;
       }
 
+      function addManualSleep() {
+        window.location.href = `/log-sleep.html`;
+      }
+
       async function logout() {
         try {
           await fetch("/api/logout", {