Delete duplicate wallets (#2163)

* Delete duplicate wallets

* Add unique Wallet index to prevent duplicate user wallets

prisma/migrations/20250513212337_delete_duplicate_wallets/migration.sql

@@ -0,0 +1,16 @@
+-- delete duplicate wallets per user
+WITH duplicates AS (
+    SELECT
+        "userId",
+        "type",
+        (array_agg(id ORDER BY updated_at DESC))[2:] AS id
+    FROM "Wallet"
+    GROUP BY "userId", "type"
+    HAVING COUNT(id) > 1
+    ORDER BY COUNT(id) DESC, "userId" ASC
+)
+DELETE FROM "Wallet"
+WHERE id in (SELECT unnest(id) FROM duplicates);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Wallet_userId_type_key" ON "Wallet"("userId", "type");

prisma/schema.prisma

@@ -246,6 +246,7 @@ model Wallet {
   InvoiceForward InvoiceForward[]
   DirectPayment  DirectPayment[]
 
+  @@unique([userId, type])
   @@index([userId])
   @@index([priority])
 }