Added power sum per distributionboard

src/db/repositories/distribution-board.repository.ts

@@ -1,5 +1,5 @@
 import crypto from "node:crypto";
-import { eq } from "drizzle-orm";
+import { and, eq } from "drizzle-orm";
 import { db } from "../client.js";
 import { distributionBoards } from "../schema/distribution-boards.js";
 
@@ -14,4 +14,18 @@ export class DistributionBoardRepository {
     await db.insert(distributionBoards).values(board);
     return board;
   }
+
+  async existsInProject(projectId: string, distributionBoardId: string) {
+    const [row] = await db
+      .select({ id: distributionBoards.id })
+      .from(distributionBoards)
+      .where(
+        and(
+          eq(distributionBoards.projectId, projectId),
+          eq(distributionBoards.id, distributionBoardId)
+        )
+      )
+      .limit(1);
+    return Boolean(row);
+  }
 }