Fix for undeleted games from library sources (#148)

* fix: casade delete for games and library sources

* fix: add bug workaround

* fix: lint

server/prisma/migrations/20250801035031_add_delete_casacde/migration.sql

@@ -0,0 +1,11 @@
+-- DropForeignKey
+ALTER TABLE "Game" DROP CONSTRAINT "Game_libraryId_fkey";
+
+-- DropIndex
+DROP INDEX "GameTag_name_idx";
+
+-- CreateIndex
+CREATE INDEX "GameTag_name_idx" ON "GameTag" USING GIST ("name" gist_trgm_ops(siglen=32));
+
+-- AddForeignKey
+ALTER TABLE "Game" ADD CONSTRAINT "Game_libraryId_fkey" FOREIGN KEY ("libraryId") REFERENCES "Library"("id") ON DELETE CASCADE ON UPDATE CASCADE;

server/prisma/models/content.prisma

@@ -36,7 +36,7 @@ model Game {
   // These fields will not be optional in the next version
   // Any game without a library ID will be assigned one at startup, based on the defaults
   libraryId   String?
-  library     Library? @relation(fields: [libraryId], references: [id])
+  library     Library? @relation(fields: [libraryId], references: [id], onDelete: Cascade, onUpdate: Cascade)
   libraryPath String
 
   collections CollectionEntry[]

server/server/plugins/05.library-init.ts

@@ -61,6 +61,14 @@ export default defineNitroPlugin(async () => {
     });
   }
 
+  // Delete all games that don't have a library provider after the legacy handler
+  // (leftover from a bug)
+  await prisma.game.deleteMany({
+    where: {
+      libraryId: null,
+    },
+  });
+
   for (const library of libraries) {
     const constructor = libraryConstructors[library.backend];
     try {