feat(collections): backend

prisma/migrations/20250103202348_add_collections/migration.sql

@@ -0,0 +1,29 @@
+-- CreateTable
+CREATE TABLE "Collection" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "isDefault" BOOLEAN NOT NULL DEFAULT false,
+    "userId" TEXT NOT NULL,
+
+    CONSTRAINT "Collection_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "_CollectionToGame" (
+    "A" TEXT NOT NULL,
+    "B" TEXT NOT NULL,
+
+    CONSTRAINT "_CollectionToGame_AB_pkey" PRIMARY KEY ("A","B")
+);
+
+-- CreateIndex
+CREATE INDEX "_CollectionToGame_B_index" ON "_CollectionToGame"("B");
+
+-- AddForeignKey
+ALTER TABLE "Collection" ADD CONSTRAINT "Collection_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "_CollectionToGame" ADD CONSTRAINT "_CollectionToGame_A_fkey" FOREIGN KEY ("A") REFERENCES "Collection"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "_CollectionToGame" ADD CONSTRAINT "_CollectionToGame_B_fkey" FOREIGN KEY ("B") REFERENCES "Game"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20250109005948_use_collection_entry_to_ensure_unique_games/migration.sql

@@ -0,0 +1,28 @@
+/*
+  Warnings:
+
+  - You are about to drop the `_CollectionToGame` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropForeignKey
+ALTER TABLE "_CollectionToGame" DROP CONSTRAINT "_CollectionToGame_A_fkey";
+
+-- DropForeignKey
+ALTER TABLE "_CollectionToGame" DROP CONSTRAINT "_CollectionToGame_B_fkey";
+
+-- DropTable
+DROP TABLE "_CollectionToGame";
+
+-- CreateTable
+CREATE TABLE "CollectionEntry" (
+    "collectionId" TEXT NOT NULL,
+    "gameId" TEXT NOT NULL,
+
+    CONSTRAINT "CollectionEntry_pkey" PRIMARY KEY ("collectionId","gameId")
+);
+
+-- AddForeignKey
+ALTER TABLE "CollectionEntry" ADD CONSTRAINT "CollectionEntry_collectionId_fkey" FOREIGN KEY ("collectionId") REFERENCES "Collection"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "CollectionEntry" ADD CONSTRAINT "CollectionEntry_gameId_fkey" FOREIGN KEY ("gameId") REFERENCES "Game"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/schema/collection.prisma

@@ -0,0 +1,20 @@
+model Collection {
+    id   String @id @default(uuid())
+    name String
+
+    isDefault Boolean @default(false)
+    userId    String
+    user      User    @relation(fields: [userId], references: [id])
+
+    entries CollectionEntry[]
+}
+
+model CollectionEntry {
+    collectionId String
+    collection   Collection @relation(fields: [collectionId], references: [id])
+
+    gameId String
+    game   Game   @relation(fields: [gameId], references: [id])
+
+    @@id([collectionId, gameId])
+}