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,
+      },
+    });
+  });
+};

packages/api/src/router/widgets/index.ts

@@ -4,6 +4,7 @@ import { calendarRouter } from "./calendar";
 import { dnsHoleRouter } from "./dns-hole";
 import { mediaServerRouter } from "./media-server";
 import { notebookRouter } from "./notebook";
+import { rssFeedRouter } from "./rssFeed";
 import { smartHomeRouter } from "./smart-home";
 import { weatherRouter } from "./weather";
 
@@ -15,4 +16,5 @@ export const widgetRouter = createTRPCRouter({
   smartHome: smartHomeRouter,
   mediaServer: mediaServerRouter,
   calendar: calendarRouter,
+  rssFeed: rssFeedRouter,
 });

packages/api/src/router/widgets/rssFeed.ts

@@ -0,0 +1,12 @@
+import type { RssFeed } from "@homarr/cron-jobs";
+import { createItemChannel } from "@homarr/redis";
+
+import { createOneItemMiddleware } from "../../middlewares/item";
+import { createTRPCRouter, publicProcedure } from "../../trpc";
+
+export const rssFeedRouter = createTRPCRouter({
+  getFeeds: publicProcedure.unstable_concat(createOneItemMiddleware("rssFeed")).query(async ({ input }) => {
+    const channel = createItemChannel<RssFeed[]>(input.itemId);
+    return await channel.getAsync();
+  }),
+});