fix: Error on existing booking when credential is deleted (#16784)

packages/prisma/migrations/20240924112248_booking_reference_null_credential_on_delete/migration.sql

@@ -0,0 +1,11 @@
+-- DropIndex
+DROP INDEX "BookingReference_credentialId_idx";
+
+-- Remove disconnected Credentials from bookingReference to prevent foreign key constraint error
+UPDATE "BookingReference"
+SET "credentialId" = NULL
+WHERE "credentialId" IS NOT NULL
+AND "credentialId" NOT IN (SELECT "id" FROM "Credential");
+
+-- AddForeignKey
+ALTER TABLE "BookingReference" ADD CONSTRAINT "BookingReference_credentialId_fkey" FOREIGN KEY ("credentialId") REFERENCES "Credential"("id") ON DELETE SET NULL ON UPDATE CASCADE;

packages/prisma/schema.prisma

@@ -183,6 +183,7 @@ model Credential {
  selectedCalendars SelectedCalendar[]
  invalid Boolean? @default(false)
  CalendarCache CalendarCache[]
+ references BookingReference[]
 
  @@index([userId])
  @@index([appId])
@@ -533,10 +534,11 @@ model BookingReference {
  bookingId Int?
  externalCalendarId String?
  deleted Boolean?
- credentialId Int?
+
+ credential Credential? @relation(fields: [credentialId], references: [id], onDelete: SetNull)
+ credentialId Int?
 
  @@index([bookingId])
- @@index([credentialId])
  @@index([type])
  @@index([uid])
 }