updated admin page with more functionality, simplified burger menu and added many-to-many parent-child relationship

src/baby_monitor/main.py

@@ -119,6 +119,18 @@ def serve_sleep() -> FileResponse:
     return FileResponse(static_path / "sleep.html")
 
 
+@app.get("/menu.css", include_in_schema=False)
+def serve_menu_css() -> FileResponse:
+    """Serve the shared menu CSS."""
+    return FileResponse(static_path / "menu.css")
+
+
+@app.get("/menu.js", include_in_schema=False)
+def serve_menu_js() -> FileResponse:
+    """Serve the shared menu JavaScript."""
+    return FileResponse(static_path / "menu.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

@@ -19,5 +19,4 @@ class ChildResponse(BaseModel):
     name: str
     birth_time: datetime
     birth_weight: float
-    user_id: int
     created_at: datetime

src/baby_monitor/models/db/child.py

@@ -1,7 +1,7 @@
 """Child database model."""
 
 from typing import TYPE_CHECKING
-from sqlalchemy import Column, Integer, String, DateTime, Float, ForeignKey
+from sqlalchemy import Column, Integer, String, DateTime, Float
 from datetime import datetime
 
 if TYPE_CHECKING:
@@ -21,8 +21,7 @@ class Child(Base):
     name = Column(String, nullable=False)
     birth_time = Column(DateTime, nullable=False)
     birth_weight = Column(Float, nullable=False)  # in grams
-    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
     created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
 
     def __repr__(self) -> str:
-        return f"<Child(id={self.id}, name='{self.name}', user_id={self.user_id})>"
+        return f"<Child(id={self.id}, name='{self.name}')>"

src/baby_monitor/models/db/child_parent.py

@@ -0,0 +1,29 @@
+"""Child-Parent junction table for many-to-many relationship."""
+
+from typing import TYPE_CHECKING
+from sqlalchemy import Column, Integer, ForeignKey, DateTime
+from datetime import datetime
+
+if TYPE_CHECKING:
+    from sqlalchemy.orm import DeclarativeBase
+
+    Base = DeclarativeBase
+else:
+    from baby_monitor.repositories.dependencies.get_database import Base
+
+
+class ChildParent(Base):
+    """Junction table linking children to their parents (users)."""
+
+    __tablename__ = "child_parents"
+
+    id = Column(Integer, primary_key=True, index=True)
+    child_id = Column(Integer, ForeignKey("children.id"), nullable=False)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+
+    def __repr__(self) -> str:
+        return (
+            f"<ChildParent(id={self.id}, "
+            f"child_id={self.child_id}, user_id={self.user_id})>"
+        )

src/baby_monitor/repositories/child/sqlite_child.py

@@ -7,6 +7,7 @@ from baby_monitor.repositories.interfaces.child_repository_interface import (
     ChildRepositoryInterface,
 )
 from baby_monitor.models.db.child import Child
+from baby_monitor.models.db.child_parent import ChildParent
 
 
 class SQLiteChildRepository(ChildRepositoryInterface):
@@ -18,23 +19,29 @@ class SQLiteChildRepository(ChildRepositoryInterface):
     def create(
         self, name: str, birth_time: datetime, birth_weight: float, user_id: int
     ) -> dict:
-        """Create a new child record."""
+        """Create a new child record and link to user."""
         child = Child(
             name=name,
             birth_time=birth_time,
             birth_weight=birth_weight,
-            user_id=user_id,
         )
         self.db.add(child)
         self.db.commit()
         self.db.refresh(child)
 
+        # Create the child-parent relationship
+        child_parent = ChildParent(
+            child_id=child.id,
+            user_id=user_id,
+        )
+        self.db.add(child_parent)
+        self.db.commit()
+
         return {
             "id": child.id,
             "name": child.name,
             "birth_time": child.birth_time,
             "birth_weight": child.birth_weight,
-            "user_id": child.user_id,
             "created_at": child.created_at,
         }
 
@@ -49,13 +56,18 @@ class SQLiteChildRepository(ChildRepositoryInterface):
             "name": child.name,
             "birth_time": child.birth_time,
             "birth_weight": child.birth_weight,
-            "user_id": child.user_id,
             "created_at": child.created_at,
         }
 
     def get_by_user_id(self, user_id: int) -> list[dict]:
-        """Get all children for a specific user."""
+        """Get all children for a specific user via junction table."""
-        children = self.db.query(Child).filter(Child.user_id == user_id).all()
+        # Join Child and ChildParent tables
+        children = (
+            self.db.query(Child)
+            .join(ChildParent, Child.id == ChildParent.child_id)
+            .filter(ChildParent.user_id == user_id)
+            .all()
+        )
 
         return [
             {
@@ -63,12 +75,36 @@ class SQLiteChildRepository(ChildRepositoryInterface):
                 "name": child.name,
                 "birth_time": child.birth_time,
                 "birth_weight": child.birth_weight,
-                "user_id": child.user_id,
                 "created_at": child.created_at,
             }
             for child in children
         ]
 
+    def get_parent_ids(self, child_id: int) -> list[int]:
+        """Get all parent user IDs for a specific child."""
+        parent_ids = (
+            self.db.query(ChildParent.user_id)
+            .filter(ChildParent.child_id == child_id)
+            .all()
+        )
+        return [user_id for (user_id,) in parent_ids]
+
+    def remove_parent(self, child_id: int, user_id: int) -> bool:
+        """Remove a parent-child relationship."""
+        link = (
+            self.db.query(ChildParent)
+            .filter(
+                ChildParent.child_id == child_id,
+                ChildParent.user_id == user_id,
+            )
+            .first()
+        )
+        if link:
+            self.db.delete(link)
+            self.db.commit()
+            return True
+        return False
+
     def update(
         self,
         child_id: int,
@@ -96,16 +132,19 @@ class SQLiteChildRepository(ChildRepositoryInterface):
             "name": child.name,
             "birth_time": child.birth_time,
             "birth_weight": child.birth_weight,
-            "user_id": child.user_id,
             "created_at": child.created_at,
         }
 
     def delete(self, child_id: int) -> bool:
-        """Delete a child record."""
+        """Delete a child record and all parent relationships."""
         child = self.db.query(Child).filter(Child.id == child_id).first()
         if not child:
             return False
 
+        # Delete all parent relationships first
+        self.db.query(ChildParent).filter(ChildParent.child_id == child_id).delete()
+
+        # Delete the child
         self.db.delete(child)
         self.db.commit()
         return True

src/baby_monitor/repositories/dependencies/get_database.py

@@ -78,6 +78,7 @@ def init_db() -> None:
     # This must be done before create_all() is called
     from baby_monitor.models.db.user import User  # noqa: F401
     from baby_monitor.models.db.child import Child  # noqa: F401
+    from baby_monitor.models.db.child_parent import ChildParent  # noqa: F401
     from baby_monitor.models.db.feeding import Feeding  # noqa: F401
     from baby_monitor.models.db.diaper_change import DiaperChange  # noqa: F401
     from baby_monitor.models.db.sleep import Sleep  # noqa: F401

src/baby_monitor/repositories/diaper_change/sqlite_diaper_change.py

@@ -8,6 +8,7 @@ from baby_monitor.repositories.interfaces.diaper_change_repository_interface imp
 )
 from baby_monitor.models.db.diaper_change import DiaperChange
 from baby_monitor.models.db.child import Child
+from baby_monitor.models.db.child_parent import ChildParent
 
 
 class SQLiteDiaperChangeRepository(DiaperChangeRepositoryInterface):
@@ -65,8 +66,9 @@ class SQLiteDiaperChangeRepository(DiaperChangeRepositoryInterface):
         """Get all diaper change logs for a specific user's children."""
         diaper_changes = (
             self.db.query(DiaperChange)
-            .join(Child)
+            .join(Child, DiaperChange.child_id == Child.id)
-            .filter(Child.user_id == user_id)
+            .join(ChildParent, Child.id == ChildParent.child_id)
+            .filter(ChildParent.user_id == user_id)
             .order_by(DiaperChange.change_time.desc())
             .all()
         )

src/baby_monitor/repositories/feeding/sqlite_feeding.py

@@ -8,6 +8,7 @@ from baby_monitor.repositories.interfaces.feeding_repository_interface import (
 )
 from baby_monitor.models.db.feeding import Feeding
 from baby_monitor.models.db.child import Child
+from baby_monitor.models.db.child_parent import ChildParent
 
 
 class SQLiteFeedingRepository(FeedingRepositoryInterface):
@@ -57,8 +58,9 @@ class SQLiteFeedingRepository(FeedingRepositoryInterface):
         """Get all feeding logs for a specific user's children."""
         feedings = (
             self.db.query(Feeding)
-            .join(Child)
+            .join(Child, Feeding.child_id == Child.id)
-            .filter(Child.user_id == user_id)
+            .join(ChildParent, Child.id == ChildParent.child_id)
+            .filter(ChildParent.user_id == user_id)
             .order_by(Feeding.start_time.desc())
             .all()
         )

src/baby_monitor/repositories/interfaces/__init__.py

@@ -12,10 +12,26 @@ from .token_repository_interface import (
 from .user_repository_interface import (
     UserRepositoryInterface,
 )
+from .child_repository_interface import (
+    ChildRepositoryInterface,
+)
+from .feeding_repository_interface import (
+    FeedingRepositoryInterface,
+)
+from .diaper_change_repository_interface import (
+    DiaperChangeRepositoryInterface,
+)
+from .sleep_repository_interface import (
+    SleepRepositoryInterface,
+)
 
 __all__ = [
     "UserRepositoryInterface",
     "TokenRepositoryInterface",
     "CredentialsRepositoryInterface",
     "InvitationRepositoryInterface",
+    "ChildRepositoryInterface",
+    "FeedingRepositoryInterface",
+    "DiaperChangeRepositoryInterface",
+    "SleepRepositoryInterface",
 ]

src/baby_monitor/repositories/interfaces/child_repository_interface.py

@@ -34,3 +34,11 @@ class ChildRepositoryInterface(ABC):
     @abstractmethod
     def delete(self, child_id: int) -> bool:
         """Delete a child record."""
+
+    @abstractmethod
+    def get_parent_ids(self, child_id: int) -> list[int]:
+        """Get all parent user IDs for a specific child."""
+
+    @abstractmethod
+    def remove_parent(self, child_id: int, user_id: int) -> bool:
+        """Remove a parent-child relationship."""

src/baby_monitor/repositories/interfaces/user_repository_interface.py

@@ -17,3 +17,11 @@ class UserRepositoryInterface(ABC):
     @abstractmethod
     def get_by_id(self, user_id: int) -> dict | None:
         """Get user by ID."""
+
+    @abstractmethod
+    def get_all(self) -> list[dict]:
+        """Get all users."""
+
+    @abstractmethod
+    def delete(self, user_id: int) -> bool:
+        """Delete a user by ID. Returns True if successful."""

src/baby_monitor/repositories/sleep/sqlite_sleep.py

@@ -8,6 +8,7 @@ from baby_monitor.repositories.interfaces.sleep_repository_interface import (
 )
 from baby_monitor.models.db.sleep import Sleep
 from baby_monitor.models.db.child import Child
+from baby_monitor.models.db.child_parent import ChildParent
 
 
 class SQLiteSleepRepository(SleepRepositoryInterface):
@@ -54,8 +55,9 @@ class SQLiteSleepRepository(SleepRepositoryInterface):
         """Get all sleep logs for a specific user's children."""
         sleeps = (
             self.db.query(Sleep)
-            .join(Child)
+            .join(Child, Sleep.child_id == Child.id)
-            .filter(Child.user_id == user_id)
+            .join(ChildParent, Child.id == ChildParent.child_id)
+            .filter(ChildParent.user_id == user_id)
             .order_by(Sleep.start_time.desc())
             .all()
         )

src/baby_monitor/repositories/user/sqlite_user.py

@@ -55,3 +55,26 @@ class SQLiteUserRepository(UserRepositoryInterface):
                 "created_at": user.created_at,
             }
         return None
+
+    def get_all(self) -> list[dict]:
+        """Get all users."""
+        users = self.db.query(User).all()
+        return [
+            {
+                "id": user.id,
+                "username": user.username,
+                "hashed_password": user.hashed_password,
+                "is_admin": user.is_admin,
+                "created_at": user.created_at,
+            }
+            for user in users
+        ]
+
+    def delete(self, user_id: int) -> bool:
+        """Delete a user by ID. Returns True if successful."""
+        user = self.db.query(User).filter(User.id == user_id).first()
+        if user:
+            self.db.delete(user)
+            self.db.commit()
+            return True
+        return False

src/baby_monitor/routers/admin.py

@@ -3,15 +3,35 @@
 import secrets
 from datetime import datetime, timedelta, UTC
 from typing import Annotated
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter, Depends, HTTPException
 from pydantic import BaseModel
 
 from baby_monitor.routers.auth import verify_admin
 from baby_monitor.repositories.dependencies.get_invitation_repository import (
     get_invitation_repository,
 )
+from baby_monitor.repositories.dependencies.get_user_repository import (
+    get_user_repository,
+)
+from baby_monitor.repositories.dependencies.get_child_repository import (
+    get_child_repository,
+)
+from baby_monitor.repositories.dependencies.get_feeding_repository import (
+    get_feeding_repository,
+)
+from baby_monitor.repositories.dependencies.get_diaper_change_repository import (
+    get_diaper_change_repository,
+)
+from baby_monitor.repositories.dependencies.get_sleep_repository import (
+    get_sleep_repository,
+)
 from baby_monitor.repositories.interfaces import (
     InvitationRepositoryInterface,
+    UserRepositoryInterface,
+    ChildRepositoryInterface,
+    FeedingRepositoryInterface,
+    DiaperChangeRepositoryInterface,
+    SleepRepositoryInterface,
 )
 
 router = APIRouter(prefix="/api/admin", tags=["admin"])
@@ -64,3 +84,172 @@ async def generate_invitation_link(
         expires_at=expires_at.isoformat(),
         message="Invitation link generated successfully. Valid for 24 hours.",
     )
+
+
+class UserResponse(BaseModel):
+    """Response model for user data."""
+
+    id: int
+    username: str
+    is_admin: bool
+    created_at: datetime
+
+
+class DeleteUserResponse(BaseModel):
+    """Response model for user deletion."""
+
+    message: str
+    deleted_children: list[int]
+    deleted_feedings: int
+    deleted_diapers: int
+    deleted_sleeps: int
+
+
+@router.get("/users", response_model=list[UserResponse])
+async def get_all_users(
+    admin_id: Annotated[int, Depends(verify_admin)],
+    user_repository: Annotated[
+        UserRepositoryInterface,
+        Depends(get_user_repository),
+    ],
+) -> list[UserResponse]:
+    """Get all users in the system.
+
+    Requires admin role.
+
+    Args:
+        admin_id: Admin user ID (from verify_admin)
+        user_repository: User storage backend
+
+    Returns:
+        List of all users with their basic information
+    """
+    users = user_repository.get_all()
+    return [
+        UserResponse(
+            id=user["id"],
+            username=user["username"],
+            is_admin=user["is_admin"],
+            created_at=user["created_at"],
+        )
+        for user in users
+    ]
+
+
+@router.delete("/users/{user_id}", response_model=DeleteUserResponse)
+async def delete_user(
+    user_id: int,
+    admin_id: Annotated[int, Depends(verify_admin)],
+    user_repository: Annotated[
+        UserRepositoryInterface,
+        Depends(get_user_repository),
+    ],
+    child_repository: Annotated[
+        ChildRepositoryInterface,
+        Depends(get_child_repository),
+    ],
+    feeding_repository: Annotated[
+        FeedingRepositoryInterface,
+        Depends(get_feeding_repository),
+    ],
+    diaper_repository: Annotated[
+        DiaperChangeRepositoryInterface,
+        Depends(get_diaper_change_repository),
+    ],
+    sleep_repository: Annotated[
+        SleepRepositoryInterface,
+        Depends(get_sleep_repository),
+    ],
+) -> DeleteUserResponse:
+    """Delete a user and cascade delete orphaned children and their logs.
+
+    When a user is deleted:
+    1. Find all children belonging to this user
+    2. For each child, check if other users also have this child
+    3. Delete only children that have no other parents (orphaned)
+    4. For orphaned children, delete all associated logs (feedings, diapers, sleep)
+    5. Finally delete the user
+
+    Requires admin role.
+
+    Args:
+        user_id: ID of user to delete
+        admin_id: Admin user ID (from verify_admin)
+        user_repository: User storage backend
+        child_repository: Child storage backend
+        feeding_repository: Feeding storage backend
+        diaper_repository: Diaper change storage backend
+        sleep_repository: Sleep storage backend
+
+    Returns:
+        DeleteUserResponse with deletion summary
+
+    Raises:
+        HTTPException: If user not found or trying to delete yourself
+    """
+    # Prevent admin from deleting themselves
+    if user_id == admin_id:
+        raise HTTPException(status_code=400, detail="Cannot delete your own account")
+
+    # Check if user exists
+    user = user_repository.get_by_id(user_id)
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    # Get all children belonging to this user
+    children = child_repository.get_by_user_id(user_id)
+
+    deleted_children_ids = []
+    total_feedings_deleted = 0
+    total_diapers_deleted = 0
+    total_sleeps_deleted = 0
+
+    # For each child, check if they have other parents
+    for child in children:
+        child_id = child["id"]
+
+        # Remove this user's relationship with the child
+        child_repository.remove_parent(child_id, user_id)
+
+        # Check if child has any remaining parents
+        remaining_parents = child_repository.get_parent_ids(child_id)
+
+        # Only delete child and logs if they have no other parents
+        if len(remaining_parents) == 0:
+            # Delete all logs for this orphaned child
+            feedings = feeding_repository.get_by_child_id(child_id)
+            for feeding in feedings:
+                feeding_repository.delete(feeding["id"])
+                total_feedings_deleted += 1
+
+            diapers = diaper_repository.get_by_child_id(child_id)
+            for diaper in diapers:
+                diaper_repository.delete(diaper["id"])
+                total_diapers_deleted += 1
+
+            sleeps = sleep_repository.get_by_child_id(child_id)
+            for sleep in sleeps:
+                sleep_repository.delete(sleep["id"])
+                total_sleeps_deleted += 1
+
+            # Delete the orphaned child
+            child_repository.delete(child_id)
+            deleted_children_ids.append(child_id)
+
+    # Finally, delete the user
+    user_repository.delete(user_id)
+
+    message = f"User '{user['username']}' deleted successfully"
+    if deleted_children_ids:
+        message += (
+            f" with {len(deleted_children_ids)} orphaned "
+            f"child{'ren' if len(deleted_children_ids) != 1 else ''}"
+        )
+
+    return DeleteUserResponse(
+        message=message,
+        deleted_children=deleted_children_ids,
+        deleted_feedings=total_feedings_deleted,
+        deleted_diapers=total_diapers_deleted,
+        deleted_sleeps=total_sleeps_deleted,
+    )

src/baby_monitor/routers/child.py

@@ -53,7 +53,8 @@ def get_child(
         raise HTTPException(status_code=404, detail="Child not found")
 
     # Verify the child belongs to the authenticated user
-    if child["user_id"] != user_id:
+    parent_ids = child_repo.get_parent_ids(child_id)
+    if user_id not in parent_ids:
         raise HTTPException(status_code=403, detail="Access denied")
 
     return ChildResponse(**child)
@@ -73,7 +74,8 @@ def update_child(
     if not child:
         raise HTTPException(status_code=404, detail="Child not found")
 
-    if child["user_id"] != user_id:
+    parent_ids = child_repo.get_parent_ids(child_id)
+    if user_id not in parent_ids:
         raise HTTPException(status_code=403, detail="Access denied")
 
     # Update the child

src/baby_monitor/routers/diaper_change.py

@@ -19,6 +19,7 @@ from baby_monitor.repositories.child.sqlite_child import SQLiteChildRepository
 from baby_monitor.repositories.dependencies.get_child_repository import (
     get_child_repository,
 )
+from baby_monitor.utils.access_control import verify_child_access
 
 router = APIRouter(prefix="/api/diaper-changes", tags=["diaper-changes"])
 
@@ -34,12 +35,7 @@ def create_diaper_change(
 ) -> DiaperChangeResponse:
     """Create a new diaper change log entry."""
     # Verify the child belongs to the authenticated user
-    child = child_repo.get_by_id(request.child_id)
+    verify_child_access(child_repo, request.child_id, user_id)
-    if not child:
-        raise HTTPException(status_code=404, detail="Child not found")
-
-    if child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied to this child")
 
     diaper_change = diaper_repo.create(
         child_id=request.child_id,
@@ -81,9 +77,7 @@ def get_diaper_change(
         raise HTTPException(status_code=404, detail="Diaper change log not found")
 
     # Verify the diaper change belongs to user's child
-    child = child_repo.get_by_id(diaper_change["child_id"])
+    verify_child_access(child_repo, diaper_change["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     return DiaperChangeResponse(**diaper_change)
 
@@ -105,9 +99,7 @@ def update_diaper_change(
         raise HTTPException(status_code=404, detail="Diaper change log not found")
 
     # Verify the diaper change belongs to user's child
-    child = child_repo.get_by_id(diaper_change["child_id"])
+    verify_child_access(child_repo, diaper_change["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     updated = diaper_repo.update(
         diaper_change_id=diaper_change_id,
@@ -142,9 +134,7 @@ def delete_diaper_change(
         raise HTTPException(status_code=404, detail="Diaper change log not found")
 
     # Verify the diaper change belongs to user's child
-    child = child_repo.get_by_id(diaper_change["child_id"])
+    verify_child_access(child_repo, diaper_change["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     success = diaper_repo.delete(diaper_change_id)
     if not success:

src/baby_monitor/routers/feeding.py

@@ -19,6 +19,7 @@ from baby_monitor.repositories.child.sqlite_child import SQLiteChildRepository
 from baby_monitor.repositories.dependencies.get_child_repository import (
     get_child_repository,
 )
+from baby_monitor.utils.access_control import verify_child_access
 
 router = APIRouter(prefix="/api/feedings", tags=["feedings"])
 
@@ -32,12 +33,7 @@ def create_feeding(
 ) -> FeedingResponse:
     """Create a new feeding log entry."""
     # Verify the child belongs to the authenticated user
-    child = child_repo.get_by_id(request.child_id)
+    verify_child_access(child_repo, request.child_id, user_id)
-    if not child:
-        raise HTTPException(status_code=404, detail="Child not found")
-
-    if child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied to this child")
 
     feeding = feeding_repo.create(
         child_id=request.child_id,
@@ -95,9 +91,7 @@ def get_feeding(
         raise HTTPException(status_code=404, detail="Feeding log not found")
 
     # Verify the feeding belongs to user's child
-    child = child_repo.get_by_id(feeding["child_id"])
+    verify_child_access(child_repo, feeding["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     return FeedingResponse(**feeding)
 
@@ -117,9 +111,7 @@ def update_feeding(
         raise HTTPException(status_code=404, detail="Feeding log not found")
 
     # Verify ownership
-    child = child_repo.get_by_id(feeding["child_id"])
+    verify_child_access(child_repo, feeding["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     # Update the feeding
     updated_feeding = feeding_repo.update(
@@ -149,9 +141,7 @@ def delete_feeding(
         raise HTTPException(status_code=404, detail="Feeding log not found")
 
     # Verify ownership
-    child = child_repo.get_by_id(feeding["child_id"])
+    verify_child_access(child_repo, feeding["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     success = feeding_repo.delete(feeding_id)
     if not success:

src/baby_monitor/routers/sleep.py

@@ -17,6 +17,7 @@ from baby_monitor.repositories.child.sqlite_child import SQLiteChildRepository
 from baby_monitor.repositories.dependencies.get_child_repository import (
     get_child_repository,
 )
+from baby_monitor.utils.access_control import verify_child_access
 
 router = APIRouter(prefix="/api/sleep", tags=["sleep"])
 
@@ -30,12 +31,7 @@ def create_sleep(
 ) -> SleepResponse:
     """Create a new sleep log entry."""
     # Verify the child belongs to the authenticated user
-    child = child_repo.get_by_id(request.child_id)
+    verify_child_access(child_repo, request.child_id, user_id)
-    if not child:
-        raise HTTPException(status_code=404, detail="Child not found")
-
-    if child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied to this child")
 
     sleep = sleep_repo.create(
         child_id=request.child_id,
@@ -91,9 +87,7 @@ def get_sleep(
         raise HTTPException(status_code=404, detail="Sleep log not found")
 
     # Verify the sleep belongs to user's child
-    child = child_repo.get_by_id(sleep["child_id"])
+    verify_child_access(child_repo, sleep["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     return SleepResponse(**sleep)
 
@@ -113,9 +107,7 @@ def update_sleep(
         raise HTTPException(status_code=404, detail="Sleep log not found")
 
     # Verify the sleep belongs to user's child
-    child = child_repo.get_by_id(sleep["child_id"])
+    verify_child_access(child_repo, sleep["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     updated = sleep_repo.update(
         sleep_id=sleep_id,
@@ -142,9 +134,7 @@ def delete_sleep(
         raise HTTPException(status_code=404, detail="Sleep log not found")
 
     # Verify the sleep belongs to user's child
-    child = child_repo.get_by_id(sleep["child_id"])
+    verify_child_access(child_repo, sleep["child_id"], user_id)
-    if not child or child["user_id"] != user_id:
-        raise HTTPException(status_code=403, detail="Access denied")
 
     success = sleep_repo.delete(sleep_id)
     if not success:

src/baby_monitor/static/admin.html

@@ -185,6 +185,172 @@
         background: #c82333;
         box-shadow: 0 4px 12px rgba(220, 53, 69, 0.4);
       }
+
+      .user-management h2::before {
+        content: "👥";
+      }
+
+      .search-box {
+        width: 100%;
+        padding: 10px;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+        font-size: 14px;
+        margin-bottom: 15px;
+      }
+
+      .user-list {
+        max-height: 400px;
+        overflow-y: auto;
+        border: 1px solid #ddd;
+        border-radius: 4px;
+      }
+
+      .user-item {
+        display: flex;
+        justify-content: space-between;
+        align-items: center;
+        padding: 12px;
+        border-bottom: 1px solid #eee;
+        background: white;
+      }
+
+      .user-item:last-child {
+        border-bottom: none;
+      }
+
+      .user-item:hover {
+        background: #f8f9fa;
+      }
+
+      .user-info {
+        flex: 1;
+      }
+
+      .user-name {
+        font-weight: 600;
+        color: #333;
+        margin-bottom: 4px;
+      }
+
+      .user-meta {
+        font-size: 12px;
+        color: #666;
+      }
+
+      .admin-badge {
+        display: inline-block;
+        padding: 2px 8px;
+        background: #667eea;
+        color: white;
+        border-radius: 3px;
+        font-size: 11px;
+        font-weight: 600;
+        margin-left: 8px;
+      }
+
+      .delete-user-btn {
+        padding: 6px 12px;
+        background: #dc3545;
+        color: white;
+        border: none;
+        border-radius: 4px;
+        font-size: 13px;
+        cursor: pointer;
+        transition: background 0.2s;
+      }
+
+      .delete-user-btn:hover {
+        background: #c82333;
+      }
+
+      .delete-user-btn:disabled {
+        background: #ccc;
+        cursor: not-allowed;
+      }
+
+      .modal {
+        display: none;
+        position: fixed;
+        top: 0;
+        left: 0;
+        width: 100%;
+        height: 100%;
+        background: rgba(0, 0, 0, 0.5);
+        z-index: 1000;
+        justify-content: center;
+        align-items: center;
+      }
+
+      .modal.show {
+        display: flex;
+      }
+
+      .modal-content {
+        background: white;
+        padding: 30px;
+        border-radius: 8px;
+        max-width: 500px;
+        width: 90%;
+        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
+      }
+
+      .modal h3 {
+        color: #333;
+        margin-bottom: 15px;
+      }
+
+      .modal p {
+        color: #666;
+        margin-bottom: 20px;
+        line-height: 1.5;
+      }
+
+      .modal-buttons {
+        display: flex;
+        gap: 10px;
+        justify-content: flex-end;
+      }
+
+      .modal-button {
+        padding: 10px 20px;
+        border: none;
+        border-radius: 4px;
+        font-size: 14px;
+        font-weight: 600;
+        cursor: pointer;
+        transition: background 0.2s;
+      }
+
+      .modal-button.cancel {
+        background: #6c757d;
+        color: white;
+      }
+
+      .modal-button.cancel:hover {
+        background: #5a6268;
+      }
+
+      .modal-button.confirm {
+        background: #dc3545;
+        color: white;
+      }
+
+      .modal-button.confirm:hover {
+        background: #c82333;
+      }
+
+      .empty-state {
+        text-align: center;
+        padding: 40px 20px;
+        color: #999;
+      }
+
+      .loading {
+        text-align: center;
+        padding: 20px;
+        color: #666;
+      }
     </style>
   </head>
   <body>
@@ -218,9 +384,46 @@
         <div id="error" class="error"></div>
       </div>
 
+      <div class="section user-management">
+        <h2>User Management</h2>
+        <p style="color: #666; margin-bottom: 15px; font-size: 14px">
+          View and manage all users in the system.
+        </p>
+
+        <input
+          type="text"
+          id="userSearch"
+          class="search-box"
+          placeholder="Search users by username..."
+          oninput="filterUsers()"
+        />
+
+        <div id="userListContainer" class="loading">Loading users...</div>
+      </div>
+
       <button class="button logout-button" onclick="logout()">Logout</button>
     </div>
 
+    <!-- Delete Confirmation Modal -->
+    <div class="modal" id="deleteModal">
+      <div class="modal-content">
+        <h3>⚠️ Confirm User Deletion</h3>
+        <p id="deleteMessage"></p>
+        <p style="color: #dc3545; font-weight: 600">
+          This action cannot be undone. All associated children and their logs
+          (feedings, diapers, sleep) will be permanently deleted.
+        </p>
+        <div class="modal-buttons">
+          <button class="modal-button cancel" onclick="closeDeleteModal()">
+            Cancel
+          </button>
+          <button class="modal-button confirm" onclick="confirmDelete()">
+            Delete User
+          </button>
+        </div>
+      </div>
+    </div>
+
     <script>
       // Check if user is authenticated and is admin
       const token = localStorage.getItem("access_token");
@@ -228,7 +431,10 @@
         window.location.href = "/login.html";
       }
 
-      // Verify user is admin
+      let allUsers = [];
+      let userToDelete = null;
+
+      // Verify user is admin and load data
       fetch("/api/me", {
         headers: {
           Authorization: `Bearer ${token}`,
@@ -240,12 +446,154 @@
             alert("Access denied. Admin privileges required.");
             window.location.href = "/";
           }
+          // Load users after verifying admin status
+          loadUsers();
         })
         .catch((error) => {
           console.error("Error verifying admin status:", error);
           window.location.href = "/login.html";
         });
 
+      async function loadUsers() {
+        const container = document.getElementById("userListContainer");
+
+        try {
+          const response = await fetch("/api/admin/users", {
+            headers: {
+              Authorization: `Bearer ${token}`,
+            },
+          });
+
+          if (!response.ok) {
+            throw new Error("Failed to load users");
+          }
+
+          allUsers = await response.json();
+          renderUsers(allUsers);
+        } catch (error) {
+          console.error("Error loading users:", error);
+          container.innerHTML = `
+            <div class="empty-state">
+              ❌ Failed to load users: ${error.message}
+            </div>
+          `;
+        }
+      }
+
+      function renderUsers(users) {
+        const container = document.getElementById("userListContainer");
+
+        if (users.length === 0) {
+          container.innerHTML = `
+            <div class="empty-state">
+              No users found.
+            </div>
+          `;
+          return;
+        }
+
+        container.className = "user-list";
+        container.innerHTML = users
+          .map(
+            (user) => `
+          <div class="user-item">
+            <div class="user-info">
+              <div class="user-name">
+                ${user.username}
+                ${user.is_admin ? '<span class="admin-badge">ADMIN</span>' : ""}
+              </div>
+              <div class="user-meta">
+                ID: ${user.id} • Created: ${new Date(user.created_at).toLocaleDateString()}
+              </div>
+            </div>
+            <button 
+              class="delete-user-btn" 
+              onclick="showDeleteModal(${user.id}, '${user.username}', ${user.is_admin})"
+              ${user.is_admin ? 'disabled title="Cannot delete admin users"' : ""}
+            >
+              Delete
+            </button>
+          </div>
+        `,
+          )
+          .join("");
+      }
+
+      function filterUsers() {
+        const searchTerm = document
+          .getElementById("userSearch")
+          .value.toLowerCase();
+        const filtered = allUsers.filter((user) =>
+          user.username.toLowerCase().includes(searchTerm),
+        );
+        renderUsers(filtered);
+      }
+
+      function showDeleteModal(userId, username, isAdmin) {
+        if (isAdmin) {
+          return; // Don't allow deleting admin users
+        }
+
+        userToDelete = { id: userId, username };
+        const modal = document.getElementById("deleteModal");
+        const message = document.getElementById("deleteMessage");
+
+        message.textContent = `Are you sure you want to delete user "${username}"?`;
+        modal.classList.add("show");
+      }
+
+      function closeDeleteModal() {
+        const modal = document.getElementById("deleteModal");
+        modal.classList.remove("show");
+        userToDelete = null;
+      }
+
+      async function confirmDelete() {
+        if (!userToDelete) return;
+
+        const modal = document.getElementById("deleteModal");
+        const confirmBtn = modal.querySelector(".modal-button.confirm");
+
+        confirmBtn.disabled = true;
+        confirmBtn.textContent = "Deleting...";
+
+        try {
+          const response = await fetch(`/api/admin/users/${userToDelete.id}`, {
+            method: "DELETE",
+            headers: {
+              Authorization: `Bearer ${token}`,
+            },
+          });
+
+          if (!response.ok) {
+            const error = await response.json();
+            throw new Error(error.detail || "Failed to delete user");
+          }
+
+          const result = await response.json();
+
+          // Show success message
+          alert(
+            `✓ ${result.message}\n\n` +
+              `Deleted:\n` +
+              `• ${result.deleted_children.length} children\n` +
+              `• ${result.deleted_feedings} feedings\n` +
+              `• ${result.deleted_diapers} diaper changes\n` +
+              `• ${result.deleted_sleeps} sleep sessions`,
+          );
+
+          // Reload user list
+          await loadUsers();
+          closeDeleteModal();
+        } catch (error) {
+          console.error("Error deleting user:", error);
+          alert(`Failed to delete user: ${error.message}`);
+        } finally {
+          confirmBtn.disabled = false;
+          confirmBtn.textContent = "Delete User";
+        }
+      }
+
       async function generateLink() {
         const btn = document.getElementById("generateBtn");
         const linkContainer = document.getElementById("linkContainer");

src/baby_monitor/static/diapers.html

@@ -3,7 +3,8 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>Diaper Changes - Baby Monitor</title>
+    <title>Diapers - Baby Monitor</title>
+    <link rel="stylesheet" href="/menu.css" />
     <style>
       * {
         margin: 0;
@@ -240,93 +241,9 @@
       .edit-button:hover {
         background: #d77ee6;
       }
-
-      .burger-menu {
-        position: fixed;
-        top: 1rem;
-        left: 1rem;
-        cursor: pointer;
-        z-index: 1000;
-        background: white;
-        padding: 0.5rem;
-        border-radius: 4px;
-        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
-      }
-
-      .burger-menu div {
-        width: 25px;
-        height: 3px;
-        background-color: #333;
-        margin: 5px 0;
-        transition: 0.3s;
-      }
-
-      .menu-overlay {
-        position: fixed;
-        top: 0;
-        left: -250px;
-        width: 250px;
-        height: 100vh;
-        background: white;
-        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
-        transition: left 0.3s;
-        z-index: 999;
-        padding: 4rem 1rem 1rem 1rem;
-      }
-
-      .menu-overlay.open {
-        left: 0;
-      }
-
-      .menu-backdrop {
-        position: fixed;
-        top: 0;
-        left: 0;
-        width: 100%;
-        height: 100vh;
-        background: rgba(0, 0, 0, 0.5);
-        display: none;
-        z-index: 998;
-      }
-
-      .menu-backdrop.open {
-        display: block;
-      }
-
-      .menu-item {
-        padding: 1rem;
-        border-bottom: 1px solid #eee;
-        cursor: pointer;
-        transition: background 0.2s;
-      }
-
-      .menu-item:hover {
-        background: #f5f5f5;
-      }
-
-      .menu-item.logout {
-        color: #dc3545;
-        font-weight: 600;
-      }
     </style>
   </head>
   <body>
-    <div class="burger-menu" id="burgerMenu">
-      <div></div>
-      <div></div>
-      <div></div>
-    </div>
-
-    <div class="menu-backdrop" id="menuBackdrop"></div>
-
-    <div class="menu-overlay" id="menuOverlay">
-      <div class="menu-item" id="menuHome">🏠 Home</div>
-      <div class="menu-item" id="menuAddChild">👶 Add Child</div>
-      <div class="menu-item" id="menuFeedings">🍼 Feedings</div>
-      <div class="menu-item" id="menuSleep">😴 Sleep</div>
-      <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
-    </div>
-
     <div class="container">
       <h1>🧷 Diaper Changes</h1>
       <p class="subtitle">Overview of all diaper change sessions</p>
@@ -337,6 +254,7 @@
     </div>
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
+    <script src="/menu.js"></script>
     <script>
       // Check if user is authenticated
       const token = localStorage.getItem("access_token");
@@ -344,50 +262,14 @@
         window.location.href = "/login.html";
       }
 
+      // Initialize burger menu
+      initBurgerMenu({ includeHome: true });
+
       let allDiaperChanges = [];
       let allChildren = [];
       let currentDaysRange = 7;
       let selectedChildId = null; // null means "All Children"
 
-      // Burger menu functionality
-      const burgerMenu = document.getElementById("burgerMenu");
-      const menuOverlay = document.getElementById("menuOverlay");
-      const menuBackdrop = document.getElementById("menuBackdrop");
-
-      function toggleMenu() {
-        menuOverlay.classList.toggle("open");
-        menuBackdrop.classList.toggle("open");
-      }
-
-      function closeMenu() {
-        menuOverlay.classList.remove("open");
-        menuBackdrop.classList.remove("open");
-      }
-
-      burgerMenu.addEventListener("click", toggleMenu);
-      menuBackdrop.addEventListener("click", closeMenu);
-
-      document.getElementById("menuHome").addEventListener("click", () => {
-        window.location.href = "/";
-      });
-
-      document.getElementById("menuAddChild").addEventListener("click", () => {
-        window.location.href = "/add-child.html";
-      });
-
-      document.getElementById("menuFeedings").addEventListener("click", () => {
-        window.location.href = "/feedings.html";
-      });
-
-      document.getElementById("menuSleep").addEventListener("click", () => {
-        window.location.href = "/sleep.html";
-      });
-
-      document.getElementById("menuLogout").addEventListener("click", () => {
-        closeMenu();
-        logout();
-      });
-
       // Load diaper changes data
       async function loadDiaperChanges() {
         try {

src/baby_monitor/static/feedings.html

@@ -4,6 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Feedings - Baby Monitor</title>
+    <link rel="stylesheet" href="/menu.css" />
     <style>
       * {
         margin: 0;
@@ -277,93 +278,9 @@
       .edit-button:hover {
         background: #5568d3;
       }
-
-      .burger-menu {
-        position: fixed;
-        top: 1rem;
-        left: 1rem;
-        cursor: pointer;
-        z-index: 1000;
-        background: white;
-        padding: 0.5rem;
-        border-radius: 4px;
-        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
-      }
-
-      .burger-menu div {
-        width: 25px;
-        height: 3px;
-        background-color: #333;
-        margin: 5px 0;
-        transition: 0.3s;
-      }
-
-      .menu-overlay {
-        position: fixed;
-        top: 0;
-        left: -250px;
-        width: 250px;
-        height: 100vh;
-        background: white;
-        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
-        transition: left 0.3s;
-        z-index: 999;
-        padding: 4rem 1rem 1rem 1rem;
-      }
-
-      .menu-overlay.open {
-        left: 0;
-      }
-
-      .menu-backdrop {
-        position: fixed;
-        top: 0;
-        left: 0;
-        width: 100%;
-        height: 100vh;
-        background: rgba(0, 0, 0, 0.5);
-        display: none;
-        z-index: 998;
-      }
-
-      .menu-backdrop.open {
-        display: block;
-      }
-
-      .menu-item {
-        padding: 1rem;
-        border-bottom: 1px solid #eee;
-        cursor: pointer;
-        transition: background 0.2s;
-      }
-
-      .menu-item:hover {
-        background: #f5f5f5;
-      }
-
-      .menu-item.logout {
-        color: #dc3545;
-        font-weight: 600;
-      }
     </style>
   </head>
   <body>
-    <div class="burger-menu" id="burgerMenu">
-      <div></div>
-      <div></div>
-      <div></div>
-    </div>
-
-    <div class="menu-backdrop" id="menuBackdrop"></div>
-
-    <div class="menu-overlay" id="menuOverlay">
-      <div class="menu-item" id="menuHome">🏠 Home</div>
-      <div class="menu-item" id="menuAddChild">👶 Add Child</div>
-      <div class="menu-item" id="menuDiapers">🧷 Diapers</div>
-      <div class="menu-item" id="menuSleep">😴 Sleep</div>
-      <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
-    </div>
-
     <div class="container">
       <h1>🍼 Feedings</h1>
       <p class="subtitle">Overview of all feeding sessions</p>
@@ -374,6 +291,7 @@
     </div>
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
+    <script src="/menu.js"></script>
     <script>
       // Check if user is authenticated
       const token = localStorage.getItem("access_token");
@@ -381,50 +299,14 @@
         window.location.href = "/login.html";
       }
 
+      // Initialize burger menu
+      initBurgerMenu({ includeHome: true });
+
       let allFeedings = [];
       let allChildren = [];
       let currentDaysRange = 7;
       let selectedChildId = null; // null means "All Children"
 
-      // Burger menu functionality
-      const burgerMenu = document.getElementById("burgerMenu");
-      const menuOverlay = document.getElementById("menuOverlay");
-      const menuBackdrop = document.getElementById("menuBackdrop");
-
-      function toggleMenu() {
-        menuOverlay.classList.toggle("open");
-        menuBackdrop.classList.toggle("open");
-      }
-
-      function closeMenu() {
-        menuOverlay.classList.remove("open");
-        menuBackdrop.classList.remove("open");
-      }
-
-      burgerMenu.addEventListener("click", toggleMenu);
-      menuBackdrop.addEventListener("click", closeMenu);
-
-      document.getElementById("menuHome").addEventListener("click", () => {
-        window.location.href = "/";
-      });
-
-      document.getElementById("menuAddChild").addEventListener("click", () => {
-        window.location.href = "/add-child.html";
-      });
-
-      document.getElementById("menuDiapers").addEventListener("click", () => {
-        window.location.href = "/diapers.html";
-      });
-
-      document.getElementById("menuSleep").addEventListener("click", () => {
-        window.location.href = "/sleep.html";
-      });
-
-      document.getElementById("menuLogout").addEventListener("click", () => {
-        closeMenu();
-        logout();
-      });
-
       // Load feedings data
       async function loadFeedings() {
         try {

src/baby_monitor/static/index.html

@@ -4,6 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Baby Monitor</title>
+    <link rel="stylesheet" href="/menu.css" />
     <style>
       body {
         font-family: Arial, sans-serif;
@@ -12,69 +13,6 @@
         padding: 0 1rem;
         background-color: #f0f0f0;
       }
-      .burger-menu {
-        position: fixed;
-        top: 1rem;
-        left: 1rem;
-        cursor: pointer;
-        z-index: 1000;
-        background: white;
-        padding: 0.5rem;
-        border-radius: 4px;
-        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
-      }
-      .burger-menu div {
-        width: 25px;
-        height: 3px;
-        background-color: #333;
-        margin: 5px 0;
-        transition: 0.3s;
-      }
-      .menu-overlay {
-        position: fixed;
-        top: 0;
-        left: -250px;
-        width: 250px;
-        height: 100vh;
-        background: white;
-        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
-        transition: left 0.3s;
-        z-index: 999;
-        padding: 4rem 1rem 1rem 1rem;
-      }
-      .menu-overlay.open {
-        left: 0;
-      }
-      .menu-backdrop {
-        position: fixed;
-        top: 0;
-        left: 0;
-        width: 100%;
-        height: 100vh;
-        background: rgba(0, 0, 0, 0.5);
-        display: none;
-        z-index: 998;
-      }
-      .menu-backdrop.open {
-        display: block;
-      }
-      .menu-item {
-        padding: 1rem;
-        border-bottom: 1px solid #eee;
-        cursor: pointer;
-        transition: background 0.2s;
-      }
-      .menu-item:hover {
-        background: #f5f5f5;
-      }
-      .menu-item.admin {
-        color: #667eea;
-        font-weight: 600;
-      }
-      .menu-item.logout {
-        color: #dc3545;
-        font-weight: 600;
-      }
       .container {
         background: white;
         padding: 2rem;
@@ -233,22 +171,6 @@
     </style>
   </head>
   <body>
-    <div class="burger-menu" id="burgerMenu">
-      <div></div>
-      <div></div>
-      <div></div>
-    </div>
-
-    <div class="menu-backdrop" id="menuBackdrop"></div>
-
-    <div class="menu-overlay" id="menuOverlay">
-      <div class="menu-item" id="menuAddChild">👶 Add Child</div>
-      <div class="menu-item" id="menuFeedings">🍼 Feedings</div>
-      <div class="menu-item" id="menuDiapers">🧷 Diapers</div>
-      <div class="menu-item" id="menuSleep">😴 Sleep</div>
-      <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
-    </div>
-
     <div class="container">
       <div id="content" class="loading">
         <p>Loading...</p>
@@ -314,49 +236,11 @@
       </div>
     </div>
 
+    <script src="/menu.js"></script>
     <script>
       const token = localStorage.getItem("access_token");
       const username = localStorage.getItem("username");
 
-      // Burger menu functionality
-      const burgerMenu = document.getElementById("burgerMenu");
-      const menuOverlay = document.getElementById("menuOverlay");
-      const menuBackdrop = document.getElementById("menuBackdrop");
-
-      function toggleMenu() {
-        menuOverlay.classList.toggle("open");
-        menuBackdrop.classList.toggle("open");
-      }
-
-      function closeMenu() {
-        menuOverlay.classList.remove("open");
-        menuBackdrop.classList.remove("open");
-      }
-
-      burgerMenu.addEventListener("click", toggleMenu);
-      menuBackdrop.addEventListener("click", closeMenu);
-
-      document.getElementById("menuAddChild").addEventListener("click", () => {
-        window.location.href = "/add-child.html";
-      });
-
-      document.getElementById("menuFeedings").addEventListener("click", () => {
-        window.location.href = "/feedings.html";
-      });
-
-      document.getElementById("menuDiapers").addEventListener("click", () => {
-        window.location.href = "/diapers.html";
-      });
-
-      document.getElementById("menuSleep").addEventListener("click", () => {
-        window.location.href = "/sleep.html";
-      });
-
-      document.getElementById("menuLogout").addEventListener("click", () => {
-        closeMenu();
-        logout();
-      });
-
       // Check if user is logged in
       if (!token) {
         window.location.href = "/login.html";
@@ -379,6 +263,11 @@
             }
           })
           .then((user) => {
+            // Initialize burger menu
+            initBurgerMenu({
+              includeHome: false,
+            });
+
             // Check if user has any children
             return fetch("/api/children", {
               headers: {
@@ -529,7 +418,7 @@
         const feedingButtonHtml = activeFeeding
           ? `
             <button class="feeding-button active" onclick="stopFeeding()">
-              🛑 Stop Feeding
+              🛑 Stopped Feeding
               <div class="feeding-info">
                 ${activeFeeding.child_name || "Child"} - ${formatFeedingType(activeFeeding.feeding_type)}<br>
                 Started <span id="feedingTimeInfo">${formatTime(activeFeeding.start_time)}</span>
@@ -538,14 +427,14 @@
           `
           : `
             <button class="feeding-button" onclick="showStartFeedingModal()">
-              ▶️ Start Feeding
+              🍼 Started Feeding
             </button>
           `;
 
         const sleepButtonHtml = activeSleep
           ? `
             <button class="sleep-button active" onclick="stopSleep()">
-              🛑 Stop Sleep
+              🛑 Stopped Sleeping
               <div class="sleep-info">
                 ${activeSleep.child_name || "Child"}<br>
                 Started <span id="sleepTimeInfo">${formatTime(activeSleep.start_time)}</span>
@@ -554,7 +443,7 @@
           `
           : `
             <button class="sleep-button" onclick="showStartSleepModal()">
-              😴 Start Sleep
+              😴 Started Sleeping
             </button>
           `;
 
@@ -563,11 +452,11 @@
           <div class="user-info">
             <p><strong>Logged in as:</strong> ${username}</p>
           </div>
+          <button class="feeding-button" onclick="window.location.href='/log-diaper.html'" style="background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); margin-bottom: 20px;">
+            🧷 Changed Diaper
+          </button>
           ${feedingButtonHtml}
           ${sleepButtonHtml}
-          <button class="feeding-button" onclick="window.location.href='/log-diaper.html'" style="background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); margin-top: 20px;">
-            🧷 Log Diaper Change
-          </button>
         `;
       }
 

src/baby_monitor/static/menu.css

@@ -0,0 +1,73 @@
+/* Burger Menu Styles */
+.burger-menu {
+  position: fixed;
+  top: 1rem;
+  left: 1rem;
+  cursor: pointer;
+  z-index: 1000;
+  background: white;
+  padding: 0.5rem;
+  border-radius: 4px;
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
+
+.burger-menu div {
+  width: 25px;
+  height: 3px;
+  background-color: #333;
+  margin: 5px 0;
+  transition: 0.3s;
+}
+
+.menu-backdrop {
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100vh;
+  background: rgba(0, 0, 0, 0.5);
+  display: none;
+  z-index: 998;
+}
+
+.menu-backdrop.open {
+  display: block;
+}
+
+.menu-overlay {
+  position: fixed;
+  top: 0;
+  left: -250px;
+  width: 250px;
+  height: 100vh;
+  background: white;
+  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
+  transition: left 0.3s;
+  z-index: 999;
+  padding: 4rem 1rem 1rem 1rem;
+}
+
+.menu-overlay.open {
+  left: 0;
+}
+
+.menu-item {
+  padding: 1rem;
+  border-bottom: 1px solid #eee;
+  cursor: pointer;
+  transition: background 0.2s;
+}
+
+.menu-item:hover {
+  background: #f5f5f5;
+}
+
+.menu-item.admin {
+  color: #667eea;
+  font-weight: 600;
+}
+
+.menu-item.logout {
+  color: #dc3545;
+  font-weight: 600;
+}

src/baby_monitor/static/menu.js

@@ -0,0 +1,106 @@
+/**
+ * Initializes the burger menu navigation
+ * @param {Object} options - Configuration options
+ * @param {boolean} options.includeHome - Whether to include Home menu item
+ * @param {boolean} options.includeFeedings - Whether to include Feedings menu item
+ * @param {boolean} options.includeDiapers - Whether to include Diapers menu item
+ * @param {boolean} options.includeSleep - Whether to include Sleep menu item
+ */
+function initBurgerMenu(options = {}) {
+  const {
+    includeHome = true,
+    includeFeedings = true,
+    includeDiapers = true,
+    includeSleep = true,
+  } = options;
+
+  // Create burger menu HTML
+  const burgerMenuHTML = `
+    <div class="burger-menu" id="burgerMenu">
+      <div></div>
+      <div></div>
+      <div></div>
+    </div>
+
+    <div class="menu-backdrop" id="menuBackdrop"></div>
+
+    <div class="menu-overlay" id="menuOverlay">
+      ${includeHome ? '<div class="menu-item" id="menuHome">🏠 Home</div>' : ""}
+      ${includeDiapers ? '<div class="menu-item" id="menuDiapers">🧷 Diapers</div>' : ""}
+      ${includeFeedings ? '<div class="menu-item" id="menuFeedings">🍼 Feedings</div>' : ""}
+      ${includeSleep ? '<div class="menu-item" id="menuSleep">😴 Sleep</div>' : ""}
+      <div class="menu-item" id="menuAddChild">👶 Add Child</div>
+      <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
+    </div>
+  `;
+
+  // Insert menu at the beginning of body
+  document.body.insertAdjacentHTML("afterbegin", burgerMenuHTML);
+
+  // Get elements
+  const burgerMenu = document.getElementById("burgerMenu");
+  const menuOverlay = document.getElementById("menuOverlay");
+  const menuBackdrop = document.getElementById("menuBackdrop");
+
+  // Toggle menu function
+  function toggleMenu() {
+    menuOverlay.classList.toggle("open");
+    menuBackdrop.classList.toggle("open");
+  }
+
+  // Close menu function
+  function closeMenu() {
+    menuOverlay.classList.remove("open");
+    menuBackdrop.classList.remove("open");
+  }
+
+  // Event listeners for menu toggle
+  burgerMenu.addEventListener("click", toggleMenu);
+  menuBackdrop.addEventListener("click", closeMenu);
+
+  // Navigation event listeners
+  if (includeHome) {
+    document.getElementById("menuHome")?.addEventListener("click", () => {
+      window.location.href = "/";
+    });
+  }
+
+  document.getElementById("menuAddChild").addEventListener("click", () => {
+    window.location.href = "/add-child.html";
+  });
+
+  if (includeFeedings) {
+    document.getElementById("menuFeedings")?.addEventListener("click", () => {
+      window.location.href = "/feedings.html";
+    });
+  }
+
+  if (includeDiapers) {
+    document.getElementById("menuDiapers")?.addEventListener("click", () => {
+      window.location.href = "/diapers.html";
+    });
+  }
+
+  if (includeSleep) {
+    document.getElementById("menuSleep")?.addEventListener("click", () => {
+      window.location.href = "/sleep.html";
+    });
+  }
+
+  document.getElementById("menuLogout").addEventListener("click", () => {
+    closeMenu();
+    // Call the page's logout function if it exists, otherwise use default
+    if (typeof logout === "function") {
+      logout();
+    } else {
+      defaultLogout();
+    }
+  });
+
+  // Default logout function
+  function defaultLogout() {
+    localStorage.removeItem("access_token");
+    localStorage.removeItem("username");
+    window.location.href = "/login.html";
+  }
+}

src/baby_monitor/static/sleep.html

@@ -4,6 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Sleep - Baby Monitor</title>
+    <link rel="stylesheet" href="/menu.css" />
     <style>
       * {
         margin: 0;
@@ -20,66 +21,6 @@
         padding: 20px;
       }
 
-      .burger-menu {
-        position: fixed;
-        top: 1rem;
-        left: 1rem;
-        cursor: pointer;
-        z-index: 1000;
-        background: white;
-        padding: 0.5rem;
-        border-radius: 4px;
-        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
-      }
-      .burger-menu div {
-        width: 25px;
-        height: 3px;
-        background-color: #333;
-        margin: 5px 0;
-        transition: 0.3s;
-      }
-      .menu-overlay {
-        position: fixed;
-        top: 0;
-        left: -250px;
-        width: 250px;
-        height: 100vh;
-        background: white;
-        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
-        transition: left 0.3s;
-        z-index: 999;
-        padding: 4rem 1rem 1rem 1rem;
-      }
-      .menu-overlay.open {
-        left: 0;
-      }
-      .menu-backdrop {
-        position: fixed;
-        top: 0;
-        left: 0;
-        width: 100%;
-        height: 100vh;
-        background: rgba(0, 0, 0, 0.5);
-        display: none;
-        z-index: 998;
-      }
-      .menu-backdrop.open {
-        display: block;
-      }
-      .menu-item {
-        padding: 1rem;
-        border-bottom: 1px solid #eee;
-        cursor: pointer;
-        transition: background 0.2s;
-      }
-      .menu-item:hover {
-        background: #f5f5f5;
-      }
-      .menu-item.logout {
-        color: #dc3545;
-        font-weight: 600;
-      }
-
       .container {
         background: white;
         border-radius: 12px;
@@ -335,23 +276,6 @@
     </style>
   </head>
   <body>
-    <div class="burger-menu" id="burgerMenu">
-      <div></div>
-      <div></div>
-      <div></div>
-    </div>
-
-    <div class="menu-backdrop" id="menuBackdrop"></div>
-
-    <div class="menu-overlay" id="menuOverlay">
-      <div class="menu-item" id="menuHome">🏠 Home</div>
-      <div class="menu-item" id="menuAddChild">👶 Add Child</div>
-      <div class="menu-item" id="menuFeedings">🍼 Feedings</div>
-      <div class="menu-item" id="menuDiapers">🧷 Diapers</div>
-      <div class="menu-item" id="menuSleep">😴 Sleep</div>
-      <div class="menu-item logout" id="menuLogout">🚪 Logout</div>
-    </div>
-
     <div class="container">
       <h1>😴 Sleep Tracking</h1>
       <p class="subtitle">Monitor your baby's sleep patterns</p>
@@ -382,57 +306,18 @@
     </div>
 
     <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/chart.umd.min.js"></script>
+    <script src="/menu.js"></script>
     <script>
       const token = localStorage.getItem("access_token");
 
-      // Burger menu functionality
-      const burgerMenu = document.getElementById("burgerMenu");
-      const menuOverlay = document.getElementById("menuOverlay");
-      const menuBackdrop = document.getElementById("menuBackdrop");
-
-      function toggleMenu() {
-        menuOverlay.classList.toggle("open");
-        menuBackdrop.classList.toggle("open");
-      }
-
-      function closeMenu() {
-        menuOverlay.classList.remove("open");
-        menuBackdrop.classList.remove("open");
-      }
-
-      burgerMenu.addEventListener("click", toggleMenu);
-      menuBackdrop.addEventListener("click", closeMenu);
-
-      document.getElementById("menuHome").addEventListener("click", () => {
-        window.location.href = "/";
-      });
-
-      document.getElementById("menuAddChild").addEventListener("click", () => {
-        window.location.href = "/add-child.html";
-      });
-
-      document.getElementById("menuFeedings").addEventListener("click", () => {
-        window.location.href = "/feedings.html";
-      });
-
-      document.getElementById("menuDiapers").addEventListener("click", () => {
-        window.location.href = "/diapers.html";
-      });
-
-      document.getElementById("menuSleep").addEventListener("click", () => {
-        closeMenu();
-      });
-
-      document.getElementById("menuLogout").addEventListener("click", () => {
-        closeMenu();
-        logout();
-      });
-
       // Check if user is logged in
       if (!token) {
         window.location.href = "/login.html";
       }
 
+      // Initialize burger menu
+      initBurgerMenu({ includeHome: true });
+
       let allSleeps = [];
       let allChildren = [];
       let selectedChildId = "";
@@ -584,10 +469,6 @@
               <h3>Total Sessions</h3>
               <div class="value">${totalSessions}</div>
             </div>
-            <div class="stat-card">
-              <h3>Ongoing</h3>
-              <div class="value">${ongoingSessions}</div>
-            </div>
             <div class="stat-card">
               <h3>Avg Duration</h3>
               <div class="value">${formatDuration(avgMinutes)}</div>

src/baby_monitor/utils/access_control.py

@@ -0,0 +1,26 @@
+"""Access control utility functions for verifying resource ownership."""
+
+from fastapi import HTTPException
+from baby_monitor.repositories.child.sqlite_child import SQLiteChildRepository
+
+
+def verify_child_access(
+    child_repo: SQLiteChildRepository, child_id: int, user_id: int
+) -> None:
+    """Verify that user has access to the child.
+
+    Args:
+        child_repo: Child repository instance
+        child_id: ID of the child to verify access for
+        user_id: ID of the user requesting access
+
+    Raises:
+        HTTPException: 404 if child not found, 403 if user is not a parent
+    """
+    child = child_repo.get_by_id(child_id)
+    if not child:
+        raise HTTPException(status_code=404, detail="Child not found")
+
+    parent_ids = child_repo.get_parent_ids(child_id)
+    if user_id not in parent_ids:
+        raise HTTPException(status_code=403, detail="Access denied to this child")