Add genres route

server/services/genres.service.ts

@@ -0,0 +1,59 @@
+import { prisma } from '@lib/prisma';
+import { ApiError } from '@utils/api-error';
+
+const findManyByServer = async (options: { serverId: string }) => {
+  const { serverId } = options;
+
+  const genres = await prisma.genre.findMany({
+    include: {
+      _count: {
+        select: {
+          albumArtists: { where: { serverId } },
+          albums: { where: { serverId } },
+          artists: { where: { serverId } },
+          songs: { where: { serverId } },
+        },
+      },
+    },
+    where: {
+      OR: [
+        { albumArtists: { some: { serverId } } },
+        { albums: { some: { serverId } } },
+        { artists: { some: { serverId } } },
+        { songs: { some: { serverId } } },
+      ],
+    },
+  });
+
+  if (!genres) {
+    throw ApiError.notFound('');
+  }
+
+  return genres;
+};
+
+const findMany = async () => {
+  const genres = await prisma.genre.findMany({
+    include: {
+      _count: {
+        select: {
+          albumArtists: true,
+          albums: true,
+          artists: true,
+          songs: true,
+        },
+      },
+    },
+  });
+
+  if (!genres) {
+    throw ApiError.notFound('');
+  }
+
+  return genres;
+};
+
+export const genresService = {
+  findMany,
+  findManyByServer,
+};