feat: add rss widget (#760)

Co-authored-by: SeDemal <demal.sebastien@bluewin.ch>

packages/api/src/middlewares/item.ts

@@ -0,0 +1,29 @@
+import { TRPCError } from "@trpc/server";
+
+import { and, eq } from "@homarr/db";
+import { items } from "@homarr/db/schema/sqlite";
+import type { WidgetKind } from "@homarr/definitions";
+import { z } from "@homarr/validation";
+
+import { publicProcedure } from "../trpc";
+
+export const createOneItemMiddleware = (kind: WidgetKind) => {
+  return publicProcedure.input(z.object({ itemId: z.string() })).use(async ({ input, ctx, next }) => {
+    const item = await ctx.db.query.items.findFirst({
+      where: and(eq(items.id, input.itemId), eq(items.kind, kind)),
+    });
+
+    if (!item) {
+      throw new TRPCError({
+        code: "NOT_FOUND",
+        message: `Item with id ${input.itemId} not found`,
+      });
+    }
+
+    return next({
+      ctx: {
+        item,
+      },
+    });
+  });
+};