feat: integration with trpc

src/modules/categories/server/procedures.ts

@@ -0,0 +1,28 @@
+import { baseProcedure, createTRPCRouter } from "@/trpc/init";
+import { Category } from '@/payload-types';
+
+export const categoriesRouter = createTRPCRouter({
+  getMany: baseProcedure.query(async ({ ctx }) => {
+
+    const data = await ctx.db.find({
+      collection: 'categories',
+      depth: 1,
+      where: {
+        parent: {
+          exists: false,
+        },
+      },
+      sort: 'name',
+    });
+
+    const formattedData = data.docs.map((category) => ({
+      ...category,
+      subcategories: (category.subcategories?.docs ?? []).map((doc) => ({
+        ...(doc as Category),
+        subcategories: undefined,
+      })),
+    }));
+
+    return formattedData;
+  })
+})

src/modules/categories/type.ts

@@ -0,0 +1,5 @@
+import { inferRouterOutputs } from "@trpc/server";
+
+import { AppRouter } from "@/trpc/routers/_app";
+
+export type CategoriesGetManyOutput = inferRouterOutputs<AppRouter>["categories"]["getMany"];