feat: adds deployment records for seismographs.

backend/routers/roster_edit.py

@@ -9,7 +9,8 @@ import httpx
 import os
 
 from backend.database import get_db
-from backend.models import RosterUnit, IgnoredUnit, Emitter, UnitHistory, UserPreferences
+from backend.models import RosterUnit, IgnoredUnit, Emitter, UnitHistory, UserPreferences, DeploymentRecord
+import uuid
 from backend.services.slmm_sync import sync_slm_to_slmm
 
 router = APIRouter(prefix="/api/roster", tags=["roster-edit"])
@@ -27,6 +28,38 @@ def get_calibration_interval(db: Session) -> int:
 SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")
 
 
+def sync_deployment_record(db: Session, unit: RosterUnit, new_deployed: bool):
+    """
+    Keep DeploymentRecord in sync with the deployed flag.
+
+    deployed True  → open a new DeploymentRecord if none is already open.
+    deployed False → close the active DeploymentRecord by setting actual_removal_date = today.
+    """
+    if new_deployed:
+        existing = db.query(DeploymentRecord).filter(
+            DeploymentRecord.unit_id == unit.id,
+            DeploymentRecord.actual_removal_date == None
+        ).first()
+        if not existing:
+            record = DeploymentRecord(
+                id=str(uuid.uuid4()),
+                unit_id=unit.id,
+                project_ref=unit.project_id or None,
+                deployed_date=date.today(),
+                created_at=datetime.utcnow(),
+                updated_at=datetime.utcnow(),
+            )
+            db.add(record)
+    else:
+        active = db.query(DeploymentRecord).filter(
+            DeploymentRecord.unit_id == unit.id,
+            DeploymentRecord.actual_removal_date == None
+        ).first()
+        if active:
+            active.actual_removal_date = date.today()
+            active.updated_at = datetime.utcnow()
+
+
 def record_history(db: Session, unit_id: str, change_type: str, field_name: str = None,
                    old_value: str = None, new_value: str = None, source: str = "manual", notes: str = None):
     """Helper function to record a change in unit history"""
@@ -679,6 +712,7 @@ async def edit_roster_unit(
         status_text = "deployed" if deployed else "benched"
         old_status_text = "deployed" if old_deployed else "benched"
         record_history(db, unit_id, "deployed_change", "deployed", old_status_text, status_text, "manual")
+        sync_deployment_record(db, unit, deployed_bool)
 
     if old_retired != retired:
         status_text = "retired" if retired else "active"
@@ -795,6 +829,7 @@ async def set_deployed(unit_id: str, deployed: bool = Form(...), db: Session = D
             new_value=status_text,
             source="manual"
         )
+        sync_deployment_record(db, unit, deployed)
 
     db.commit()