added feeding data objects and workflow

src/baby_monitor/models/db/feeding.py

@@ -0,0 +1,28 @@
+"""Feeding database model."""
+
+from typing import TYPE_CHECKING
+from sqlalchemy import Column, Integer, DateTime, ForeignKey, String
+from datetime import datetime, UTC
+
+if TYPE_CHECKING:
+    from sqlalchemy.orm import DeclarativeBase
+
+    Base = DeclarativeBase
+else:
+    from baby_monitor.repositories.dependencies.get_database import Base
+
+
+class Feeding(Base):
+    """Feeding log database model."""
+
+    __tablename__ = "feedings"
+
+    id = Column(Integer, primary_key=True, index=True)
+    child_id = Column(Integer, ForeignKey("children.id"), nullable=False)
+    start_time = Column(DateTime, nullable=False)
+    end_time = Column(DateTime, nullable=True)
+    feeding_type = Column(String, nullable=False)  # stores FeedingType enum
+    created_at = Column(DateTime, default=datetime.now(UTC), nullable=False)
+
+    def __repr__(self) -> str:
+        return f"<Feeding(id={self.id}, child_id={self.child_id})>"

src/baby_monitor/models/enums.py

@@ -0,0 +1,11 @@
+"""Feeding type enumeration."""
+
+from enum import StrEnum
+
+
+class FeedingType(StrEnum):
+    """Enumeration of feeding types."""
+
+    LEFT_BREAST = "left_breast"
+    RIGHT_BREAST = "right_breast"
+    BOTTLE = "bottle"

src/baby_monitor/models/feeding.py

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+"""Feeding-related request and response models."""
+
+from datetime import datetime
+from pydantic import BaseModel, Field
+
+from baby_monitor.models.enums import FeedingType
+
+
+class CreateFeedingRequest(BaseModel):
+    """Request model for creating a feeding log."""
+
+    child_id: int = Field(..., gt=0)
+    start_time: datetime
+    end_time: datetime | None = None
+    feeding_type: FeedingType
+
+
+class UpdateFeedingRequest(BaseModel):
+    """Request model for updating a feeding log."""
+
+    start_time: datetime | None = None
+    end_time: datetime | None = None
+    feeding_type: FeedingType | None = None
+
+
+class FeedingResponse(BaseModel):
+    """Response model for feeding log data."""
+
+    id: int
+    child_id: int
+    start_time: datetime
+    end_time: datetime | None
+    feeding_type: str
+    created_at: datetime
+    child_name: str | None = None  # Optional, populated when needed