Database-level multi-library support #48 (#58)

* feat: start of library backends

* feat: update backend routes and create initializer

* feat: add legacy library creation

* fix: resolve frontend type errors

* fix: runtime errors

* fix: lint

prisma/migrations/20250601022736_add_database_library/migration.sql

@@ -0,0 +1,53 @@
+/*
+  Warnings:
+
+  - You are about to drop the `ClientPeerAPIConfiguration` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- CreateEnum
+CREATE TYPE "LibraryBackend" AS ENUM ('Filesystem');
+
+-- AlterEnum
+ALTER TYPE "ClientCapabilities" ADD VALUE 'trackPlaytime';
+
+-- DropForeignKey
+ALTER TABLE "ClientPeerAPIConfiguration" DROP CONSTRAINT "ClientPeerAPIConfiguration_clientId_fkey";
+
+-- AlterTable
+ALTER TABLE "Screenshot" ALTER COLUMN "private" DROP DEFAULT;
+
+-- DropTable
+DROP TABLE "ClientPeerAPIConfiguration";
+
+-- CreateTable
+CREATE TABLE "Library" (
+    "id" TEXT NOT NULL,
+    "name" TEXT NOT NULL,
+    "backend" "LibraryBackend" NOT NULL,
+    "options" JSONB NOT NULL,
+
+    CONSTRAINT "Library_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "Playtime" (
+    "gameId" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "seconds" INTEGER NOT NULL,
+    "updatedAt" TIMESTAMPTZ(6) NOT NULL,
+    "createdAt" TIMESTAMPTZ(6) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "Playtime_pkey" PRIMARY KEY ("gameId","userId")
+);
+
+-- CreateIndex
+CREATE INDEX "Playtime_userId_idx" ON "Playtime"("userId");
+
+-- CreateIndex
+CREATE INDEX "Screenshot_userId_idx" ON "Screenshot"("userId");
+
+-- AddForeignKey
+ALTER TABLE "Playtime" ADD CONSTRAINT "Playtime_gameId_fkey" FOREIGN KEY ("gameId") REFERENCES "Game"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "Playtime" ADD CONSTRAINT "Playtime_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;

prisma/migrations/20250601032211_add_library_relation_to_game/migration.sql

@@ -0,0 +1,17 @@
+/*
+Warnings:
+
+- You are about to drop the column `libraryBasePath` on the `Game` table. All the data in the column will be lost.
+
+*/
+-- DropIndex
+DROP INDEX "Game_libraryBasePath_key";
+
+-- AlterTable
+ALTER TABLE "Game" RENAME COLUMN "libraryBasePath" TO "libraryPath";
+
+ALTER TABLE "Game" ADD COLUMN "libraryId" TEXT;
+
+-- AddForeignKey
+ALTER TABLE "Game"
+ADD CONSTRAINT "Game_libraryId_fkey" FOREIGN KEY ("libraryId") REFERENCES "Library" ("id") ON DELETE SET NULL ON UPDATE CASCADE;

prisma/migrations/20250601032938_add_unique_constraint/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - A unique constraint covering the columns `[libraryId,libraryPath]` on the table `Game` will be added. If there are existing duplicate values, this will fail.
+
+*/
+-- CreateIndex
+CREATE UNIQUE INDEX "Game_libraryId_libraryPath_key" ON "Game"("libraryId", "libraryPath");

prisma/models/app.prisma

@@ -1,7 +1,7 @@
 model ApplicationSettings {
     timestamp DateTime @id @default(now())
 
-    metadataProviders             String[]
+    metadataProviders String[]
 
     saveSlotCountLimit   Int   @default(5)
     saveSlotSizeLimit    Float @default(10) // MB
@@ -13,3 +13,17 @@ enum Platform {
     Linux   @map("linux")
     macOS   @map("macos")
 }
+
+enum LibraryBackend {
+    Filesystem
+}
+
+model Library {
+    id   String @id @default(uuid())
+    name String
+
+    backend LibraryBackend
+    options Json
+
+    games    Game[]
+}

prisma/models/content.prisma

@@ -29,8 +29,13 @@ model Game {
     mImageCarouselObjectIds String[] // linked to below array
     mImageLibraryObjectIds  String[] // linked to objects in s3
 
-    versions        GameVersion[]
-    libraryBasePath String        @unique // Base dir for all the game versions
+    versions GameVersion[]
+
+    // 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])
+    libraryPath String
 
     collections CollectionEntry[]
     saves       SaveSlot[]
@@ -42,6 +47,7 @@ model Game {
     publishers Company[] @relation(name: "publishers")
 
     @@unique([metadataSource, metadataId], name: "metadataKey")
+    @@unique([libraryId, libraryPath], name: "libraryKey")
 }
 
 model GameRating {