Free rooms first implementation

src/alpine_bits_python/db.py

@@ -18,6 +18,8 @@ from sqlalchemy import (
     Index,
     Integer,
     String,
+    UniqueConstraint,
+    func,
 )
 from sqlalchemy.exc import DBAPIError
 from sqlalchemy.ext.asyncio import (
@@ -679,6 +681,66 @@ class ConversionRoom(Base):
     conversion = relationship("Conversion", back_populates="conversion_rooms")
 
 
+class HotelInventory(Base):
+    """Room and category definitions synchronized via AlpineBits."""
+
+    __tablename__ = "hotel_inventory"
+
+    id = Column(Integer, primary_key=True)
+    hotel_id = Column(
+        String(50), ForeignKey("hotels.hotel_id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    inv_type_code = Column(String(8), nullable=False, index=True)
+    inv_code = Column(String(16), nullable=True, index=True)
+    room_name = Column(String(200), nullable=True)
+    max_occupancy = Column(Integer, nullable=True)
+    source = Column(String(20), nullable=False)
+    first_seen = Column(DateTime(timezone=True), nullable=False)
+    last_updated = Column(DateTime(timezone=True), nullable=False)
+
+    hotel = relationship("Hotel", back_populates="inventory_items")
+    availability = relationship(
+        "RoomAvailability",
+        back_populates="inventory_item",
+        cascade="all, delete-orphan",
+        passive_deletes=True,
+    )
+
+    __table_args__ = (
+        Index(
+            "uq_hotel_inventory_unique_key",
+            "hotel_id",
+            "inv_type_code",
+            func.coalesce(inv_code, ""),
+            unique=True,
+        ),
+    )
+
+
+class RoomAvailability(Base):
+    """Daily availability counts for inventory items."""
+
+    __tablename__ = "room_availability"
+
+    id = Column(Integer, primary_key=True)
+    inventory_id = Column(
+        Integer, ForeignKey("hotel_inventory.id", ondelete="CASCADE"), nullable=False, index=True
+    )
+    date = Column(Date, nullable=False, index=True)
+    count_type_2 = Column(Integer, nullable=True)
+    count_type_6 = Column(Integer, nullable=True)
+    count_type_9 = Column(Integer, nullable=True)
+    is_closing_season = Column(Boolean, nullable=False, default=False)
+    last_updated = Column(DateTime(timezone=True), nullable=False)
+    update_type = Column(String(20), nullable=False)
+
+    inventory_item = relationship("HotelInventory", back_populates="availability")
+
+    __table_args__ = (
+        UniqueConstraint("inventory_id", "date", name="uq_room_availability_unique_key"),
+    )
+
+
 class Hotel(Base):
     """Hotel configuration (migrated from alpine_bits_auth in config.yaml)."""
 
@@ -710,6 +772,9 @@ class Hotel(Base):
 
     # Relationships
     webhook_endpoints = relationship("WebhookEndpoint", back_populates="hotel")
+    inventory_items = relationship(
+        "HotelInventory", back_populates="hotel", cascade="all, delete-orphan"
+    )
 
 
 class WebhookEndpoint(Base):