release: bump version to 0.43.0

backend/app/models/vessel.py

@@ -0,0 +1,75 @@
+"""Vessel AIS models for live maritime tracking."""
+
+from sqlalchemy import BigInteger, Column, DateTime, Float, Index, Integer, SmallInteger, String
+from sqlalchemy.sql import func
+
+from app.core.time import to_iso8601_utc
+from app.db.session import Base
+
+
+class VesselStatic(Base):
+    """Slow-changing vessel identity and dimensions."""
+
+    __tablename__ = "vessel_static"
+
+    mmsi = Column(BigInteger, primary_key=True)
+    name = Column(String(128), nullable=True)
+    callsign = Column(String(16), nullable=True)
+    vessel_type = Column(SmallInteger, nullable=True, index=True)
+    vessel_type_name = Column(String(64), nullable=True, index=True)
+    flag = Column(String(4), nullable=True, index=True)
+    length = Column(Float, nullable=True)
+    width = Column(Float, nullable=True)
+    draught = Column(Float, nullable=True)
+    imo = Column(BigInteger, nullable=True)
+    updated_at = Column(DateTime(timezone=True), nullable=False, server_default=func.now())
+
+    def to_dict(self) -> dict:
+        return {
+            "mmsi": self.mmsi,
+            "name": self.name,
+            "callsign": self.callsign,
+            "vessel_type": self.vessel_type,
+            "vessel_type_name": self.vessel_type_name,
+            "flag": self.flag,
+            "length": self.length,
+            "width": self.width,
+            "draught": self.draught,
+            "imo": self.imo,
+            "updated_at": to_iso8601_utc(self.updated_at),
+        }
+
+
+class VesselPosition(Base):
+    """Append-only AIS positions retained for short history windows."""
+
+    __tablename__ = "vessel_position"
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    mmsi = Column(BigInteger, nullable=False, index=True)
+    lat = Column(Float, nullable=False)
+    lon = Column(Float, nullable=False)
+    sog = Column(Float, nullable=True)
+    cog = Column(Float, nullable=True)
+    heading = Column(SmallInteger, nullable=True)
+    nav_status = Column(SmallInteger, nullable=True, index=True)
+    received_at = Column(DateTime(timezone=True), nullable=False, server_default=func.now(), index=True)
+
+    __table_args__ = (
+        Index("idx_vessel_pos_mmsi_time", "mmsi", "received_at"),
+        Index("idx_vessel_pos_time", "received_at"),
+        Index("idx_vessel_pos_lat_lon", "lat", "lon"),
+    )
+
+    def to_dict(self) -> dict:
+        return {
+            "id": self.id,
+            "mmsi": self.mmsi,
+            "lat": self.lat,
+            "lon": self.lon,
+            "sog": self.sog,
+            "cog": self.cog,
+            "heading": self.heading,
+            "nav_status": self.nav_status,
+            "received_at": to_iso8601_utc(self.received_at),
+        }