Major refactor WIP

backend/app/models/movement.py

@@ -0,0 +1,37 @@
+from sqlalchemy import Column, BigInteger, String, DateTime, Enum as SQLEnum, func, Index
+from enum import Enum
+from app.db.session import Base
+
+class MovementType(str, Enum):
+    TAKEOFF = "TAKEOFF"      # Aircraft becomes airborne
+    LANDING = "LANDING"      # Aircraft touches down
+    OVERFLIGHT = "OVERFLIGHT" # Aircraft passes through airspace (e.g., on call or QSY)
+    GO_AROUND = "GO_AROUND"   # Aircraft aborts landing and goes around
+    TOUCH_AND_GO = "TOUCH_AND_GO"  # Aircraft lands and immediately takes off again
+
+class Movement(Base):
+    __tablename__ = "movements"
+    
+    id = Column(BigInteger, primary_key=True, autoincrement=True)
+    movement_type = Column(SQLEnum(MovementType), nullable=False, index=True)
+    aircraft_registration = Column(String(16), nullable=False, index=True)
+    aircraft_type = Column(String(32), nullable=True)
+    callsign = Column(String(16), nullable=True)
+    timestamp = Column(DateTime, nullable=False, index=True)  # Exact time of movement
+    entity_type = Column(String(50), nullable=False, index=True)  # PPR, LOCAL_FLIGHT, ARRIVAL, DEPARTURE, OVERFLIGHT
+    entity_id = Column(BigInteger, nullable=False, index=True)    # ID of the associated flight record
+    to_location = Column(String(64), nullable=True)               # Destination (TO) - populated based on movement type
+    from_location = Column(String(64), nullable=True)             # Origin (FROM) - populated based on movement type
+    runway = Column(String(10), nullable=True)                    # Runway used (e.g., "10", "28", "04", "22")
+    wind = Column(String(20), nullable=True)                      # Wind speed/direction (e.g., "280/25")
+    pressure_setting = Column(String(20), nullable=True)          # Pressure setting (e.g., "QNH1024", "QFE1013")
+    created_by = Column(String(16), nullable=True, index=True)    # User who triggered the movement
+    ip_address = Column(String(45), nullable=True)                # For audit
+    notes = Column(String(255), nullable=True)                    # Optional context (e.g., runway used)
+    created_at = Column(DateTime, nullable=False, server_default=func.current_timestamp())
+    
+    # Composite index for efficient queries
+    __table_args__ = (
+        Index('idx_movement_lookup', 'entity_type', 'entity_id'),
+        Index('idx_movement_time', 'timestamp', 'movement_type'),
+    )