feat: implement openapi (#482)

apps/nextjs/src/app/api/[...trpc]/route.ts

@@ -0,0 +1,14 @@
+import { createOpenApiFetchHandler } from "trpc-swagger/build/index.mjs";
+
+import { appRouter, createTRPCContext } from "@homarr/api";
+
+const handler = (req: Request) => {
+  return createOpenApiFetchHandler({
+    req,
+    endpoint: "/",
+    router: appRouter,
+    createContext: () => createTRPCContext({ session: null, headers: req.headers }),
+  });
+};
+
+export { handler as GET, handler as POST };

apps/nextjs/src/app/api/openapi/route.ts

@@ -0,0 +1,8 @@
+import { NextResponse } from "next/server";
+
+import { openApiDocument } from "@homarr/api";
+import { extractBaseUrlFromHeaders } from "@homarr/common";
+
+export function GET(request: Request) {
+  return NextResponse.json(openApiDocument(extractBaseUrlFromHeaders(request.headers)));
+}