misc: adapter for Database interactions

src/app.d.ts

@@ -1,14 +1,12 @@
-// See https://kit.svelte.dev/docs/types#app
-
-import type { PrismaClient } from '@prisma/client';
 import type { Auth, AuthRequest } from 'lucia';
+import type { Database } from '$lib/server/db';
+import type { ObjectStorage } from '$lib/server/storage';
 
-// for information about these interfaces
 declare global {
   namespace App {
     // interface Error {}
     interface Locals {
-      database: PrismaClient;
+      database: Database;
       auth: Auth;
       objectStorage: ObjectStorage;
 

src/hooks.server.ts

@@ -4,11 +4,14 @@ import { S3_STORAGE_URL } from '$env/static/private';
 
 import { auth } from '$lib/server/lucia';
 import { ObjectStorageS3 } from '$lib/server/storage/s3';
+import { DatabasePrisma } from '$lib/server/db/prisma';
 
 const s3Client = new ObjectStorageS3(S3_STORAGE_URL);
+const prismaClient = new DatabasePrisma();
 
 export const handle: Handle = async ({ event, resolve }) => {
   event.locals.auth = auth;
+  event.locals.database = prismaClient;
   event.locals.objectStorage = s3Client;
 
   event.locals.authReq = auth.handleRequest(event);

src/lib/server/db/index.ts

@@ -0,0 +1,3 @@
+export interface Database {
+  listTracksWithProducer: (producerId: string) => Promise<{ title: string }[]>;
+}

src/lib/server/db/prisma.ts

@@ -0,0 +1,23 @@
+import type { Database } from '.';
+import { PrismaClient } from '@prisma/client';
+
+export class DatabasePrisma implements Database {
+  client: PrismaClient;
+
+  constructor() {
+    this.client = new PrismaClient();
+  }
+
+  listTracksWithProducer = async (producerId: string) => {
+    const tracks = await this.client.track.findMany({
+      select: {
+        title: true
+      },
+      where: {
+        producerId
+      }
+    });
+
+    return tracks;
+  };
+}

src/lib/server/s3.ts

@@ -1,20 +0,0 @@
-import { PutObjectCommand, S3Client } from '@aws-sdk/client-s3';
-
-const client = new S3Client();
-
-const uploadObject = async (obj: Buffer) => {
-  const command = new PutObjectCommand({
-    Bucket: 'test-bucket',
-    Key: 'hello-s3.txt',
-    Body: obj
-  });
-
-  try {
-    await client.send(command);
-    return null;
-  } catch (err) {
-    return err;
-  }
-};
-
-export { uploadObject };

src/lib/server/storage/index.ts

@@ -1,3 +1,3 @@
-interface ObjectStorage {
+export interface ObjectStorage {
   putObject: (obj: Buffer) => Promise<Error | null>;
 }

src/lib/server/storage/s3.ts

@@ -1,3 +1,4 @@
+import type { ObjectStorage } from '.';
 import { PutObjectCommand, S3Client, S3ServiceException } from '@aws-sdk/client-s3';
 
 class ObjectStorageS3 implements ObjectStorage {