feat: add ntfy integration (#2900)

Co-authored-by: Meier Lukas <meierschlumpf@gmail.com>

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

@@ -11,6 +11,7 @@ import { mediaTranscodingRouter } from "./media-transcoding";
 import { minecraftRouter } from "./minecraft";
 import { networkControllerRouter } from "./network-controller";
 import { notebookRouter } from "./notebook";
+import { notificationsRouter } from "./notifications";
 import { optionsRouter } from "./options";
 import { releasesRouter } from "./releases";
 import { rssFeedRouter } from "./rssFeed";
@@ -37,4 +38,5 @@ export const widgetRouter = createTRPCRouter({
   options: optionsRouter,
   releases: releasesRouter,
   networkController: networkControllerRouter,
+  notifications: notificationsRouter,
 });

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

@@ -0,0 +1,64 @@
+import { observable } from "@trpc/server/observable";
+
+import type { Modify } from "@homarr/common/types";
+import type { Integration } from "@homarr/db/schema";
+import type { IntegrationKindByCategory } from "@homarr/definitions";
+import { getIntegrationKindsByCategory } from "@homarr/definitions";
+import type { Notification } from "@homarr/integrations";
+import { notificationsRequestHandler } from "@homarr/request-handler/notifications";
+
+import type { IntegrationAction } from "../../middlewares/integration";
+import { createManyIntegrationMiddleware } from "../../middlewares/integration";
+import { createTRPCRouter, publicProcedure } from "../../trpc";
+
+const createNotificationsIntegrationMiddleware = (action: IntegrationAction) =>
+  createManyIntegrationMiddleware(action, ...getIntegrationKindsByCategory("notifications"));
+
+export const notificationsRouter = createTRPCRouter({
+  getNotifications: publicProcedure
+    .unstable_concat(createNotificationsIntegrationMiddleware("query"))
+    .query(async ({ ctx }) => {
+      return await Promise.all(
+        ctx.integrations.map(async (integration) => {
+          const innerHandler = notificationsRequestHandler.handler(integration, {});
+          const { data, timestamp } = await innerHandler.getCachedOrUpdatedDataAsync({ forceUpdate: false });
+
+          return {
+            integration: {
+              id: integration.id,
+              name: integration.name,
+              kind: integration.kind,
+              updatedAt: timestamp,
+            },
+            data,
+          };
+        }),
+      );
+    }),
+  subscribeNotifications: publicProcedure
+    .unstable_concat(createNotificationsIntegrationMiddleware("query"))
+    .subscription(({ ctx }) => {
+      return observable<{
+        integration: Modify<Integration, { kind: IntegrationKindByCategory<"notifications"> }>;
+        data: Notification[];
+      }>((emit) => {
+        const unsubscribes: (() => void)[] = [];
+        for (const integrationWithSecrets of ctx.integrations) {
+          const { decryptedSecrets: _, ...integration } = integrationWithSecrets;
+          const innerHandler = notificationsRequestHandler.handler(integrationWithSecrets, {});
+          const unsubscribe = innerHandler.subscribe((data) => {
+            emit.next({
+              integration,
+              data,
+            });
+          });
+          unsubscribes.push(unsubscribe);
+        }
+        return () => {
+          unsubscribes.forEach((unsubscribe) => {
+            unsubscribe();
+          });
+        };
+      });
+    }),
+});