Add logical distribution board feed links

src/db/repositories/project-state-restore-command.repository.ts

@@ -270,6 +270,14 @@ function replaceProjectState(
   database: AppDatabase,
   state: ProjectStateSnapshot
 ) {
+  database
+    .update(distributionBoards)
+    .set({
+      feedingDistributionBoardId: null,
+      feedingCircuitId: null,
+    })
+    .where(eq(distributionBoards.projectId, state.project.id))
+    .run();
   database
     .delete(externalModelSources)
     .where(eq(externalModelSources.projectId, state.project.id))
@@ -330,7 +338,15 @@ function replaceProjectState(
   }
   insertMany(database, rooms, state.rooms);
   insertMany(database, projectDevices, state.projectDevices);
-  insertMany(database, distributionBoards, state.distributionBoards);
+  insertMany(
+    database,
+    distributionBoards,
+    state.distributionBoards.map((board) => ({
+      ...board,
+      feedingDistributionBoardId: null,
+      feedingCircuitId: null,
+    }))
+  );
   insertMany(database, circuitLists, state.circuitLists);
   insertMany(database, circuitSections, state.circuitSections);
   insertMany(
@@ -341,6 +357,7 @@ function replaceProjectState(
       isReserve: circuit.isReserve ? 1 : 0,
     }))
   );
+  restoreDistributionBoardFeedingReferences(database, state);
   insertMany(
     database,
     distributionBoardComponents,
@@ -378,6 +395,31 @@ function replaceProjectState(
   insertMany(database, externalModelObjects, state.externalModel.objects);
 }
 
+function restoreDistributionBoardFeedingReferences(
+  database: AppDatabase,
+  state: ProjectStateSnapshot
+) {
+  for (const board of state.distributionBoards) {
+    if (
+      board.feedingDistributionBoardId === null &&
+      board.feedingCircuitId === null
+    ) {
+      continue;
+    }
+    const updated = database
+      .update(distributionBoards)
+      .set({
+        feedingDistributionBoardId: board.feedingDistributionBoardId,
+        feedingCircuitId: board.feedingCircuitId,
+      })
+      .where(eq(distributionBoards.id, board.id))
+      .run();
+    if (updated.changes !== 1) {
+      throw new Error("Distribution-board feeding reference could not be restored.");
+    }
+  }
+}
+
 function insertMany<TTable extends Parameters<AppDatabase["insert"]>[0]>(
   database: AppDatabase,
   table: TTable,