chore: throw if more than one network config is passed (#2056)

* chore: throw if more than one network config is passed

* up

* update init

* up message

* improve project structure

* address nit

packages/sdk/src/create/create.ts

@@ -1,9 +1,8 @@
-import { type Libp2pComponents, type LightNode } from "@waku/interfaces";
+import { type LightNode } from "@waku/interfaces";
 
-import { createLibp2pAndUpdateOptions } from "../utils/libp2p.js";
 import { CreateWakuNodeOptions, WakuNode, WakuOptions } from "../waku.js";
 
-export { Libp2pComponents };
+import { createLibp2pAndUpdateOptions } from "./libp2p.js";
 
 /**
  * Create a Waku node that uses Waku Light Push, Filter and Store to send and

packages/sdk/src/create/index.ts

@@ -0,0 +1,2 @@
+export { createLightNode } from "./create.js";
+export { defaultLibp2p } from "./libp2p.js";

packages/sdk/src/create/libp2p.ts

@@ -92,6 +92,46 @@ export async function defaultLibp2p(
 export async function createLibp2pAndUpdateOptions(
   options: CreateWakuNodeOptions
 ): Promise<Libp2p> {
+  const shardInfo = configureNetworkOptions(options);
+
+  const libp2pOptions = options?.libp2p ?? {};
+  const peerDiscovery = libp2pOptions.peerDiscovery ?? [];
+
+  if (options?.defaultBootstrap) {
+    peerDiscovery.push(...defaultPeerDiscoveries(options.pubsubTopics!));
+  }
+
+  if (options?.bootstrapPeers) {
+    peerDiscovery.push(bootstrap({ list: options.bootstrapPeers }));
+  }
+
+  libp2pOptions.peerDiscovery = peerDiscovery;
+
+  const libp2p = await defaultLibp2p(
+    shardInfo,
+    wakuGossipSub(options),
+    libp2pOptions,
+    options?.userAgent
+  );
+
+  return libp2p;
+}
+
+function configureNetworkOptions(
+  options: CreateWakuNodeOptions
+): ShardInfo | undefined {
+  const flags = [
+    options.contentTopics,
+    options.pubsubTopics,
+    options.shardInfo
+  ].filter((v) => !!v);
+
+  if (flags.length > 1) {
+    throw Error(
+      "Too many network configurations provided. Pass only one of: pubsubTopic, contentTopics or shardInfo."
+    );
+  }
+
   logWhichShardInfoIsUsed(options);
 
   if (options.contentTopics) {
@@ -105,27 +145,7 @@ export async function createLibp2pAndUpdateOptions(
   options.pubsubTopics = shardInfo?.pubsubTopics ??
     options.pubsubTopics ?? [DefaultPubsubTopic];
 
-  const libp2pOptions = options?.libp2p ?? {};
-  const peerDiscovery = libp2pOptions.peerDiscovery ?? [];
-
-  if (options?.defaultBootstrap) {
-    peerDiscovery.push(...defaultPeerDiscoveries(options.pubsubTopics));
-  }
-
-  if (options?.bootstrapPeers) {
-    peerDiscovery.push(bootstrap({ list: options.bootstrapPeers }));
-  }
-
-  libp2pOptions.peerDiscovery = peerDiscovery;
-
-  const libp2p = await defaultLibp2p(
-    shardInfo?.shardInfo,
-    wakuGossipSub(options),
-    libp2pOptions,
-    options?.userAgent
-  );
-
-  return libp2p;
+  return shardInfo?.shardInfo;
 }
 
 function logWhichShardInfoIsUsed(options: CreateWakuNodeOptions): void {

packages/sdk/src/index.ts

@@ -7,11 +7,10 @@ export {
 
 export { utf8ToBytes, bytesToUtf8 } from "@waku/utils/bytes";
 
-export { defaultLibp2p } from "./utils/libp2p.js";
 export * from "./utils/content_topic.js";
 export * from "./waku.js";
 
-export { createLightNode } from "./light-node/index.js";
+export { createLightNode, defaultLibp2p } from "./create/index.js";
 export { wakuLightPush } from "./protocols/light_push.js";
 export { wakuFilter } from "./protocols/filter.js";
 export { wakuStore } from "./protocols/store.js";

packages/sdk/src/relay-node/index.ts

@@ -1,7 +1,7 @@
 import { type FullNode, type RelayNode } from "@waku/interfaces";
 import { RelayCreateOptions } from "@waku/relay";
 
-import { createLibp2pAndUpdateOptions } from "../utils/libp2p.js";
+import { createLibp2pAndUpdateOptions } from "../create/libp2p.js";
 import { CreateWakuNodeOptions, WakuNode, WakuOptions } from "../waku.js";
 
 /**

packages/sdk/src/utils/content_topic.ts

@@ -12,7 +12,7 @@ import {
   shardInfoToPubsubTopics
 } from "@waku/utils";
 
-import { createLightNode } from "../light-node/index.js";
+import { createLightNode } from "../create/index.js";
 
 interface CreateTopicOptions {
   waku?: LightNode;

packages/tests/tests/filter/utils.ts

@@ -88,19 +88,23 @@ export async function runMultipleNodes(
     withoutFilter
   );
 
-  const waku_options: ProtocolCreateOptions = {
+  const wakuOptions: ProtocolCreateOptions = {
     staticNoiseKey: NOISE_KEY_1,
     libp2p: {
       addresses: { listen: ["/ip4/0.0.0.0/tcp/0/ws"] }
-    },
-    pubsubTopics,
-    shardInfo
+    }
   };
 
-  log.info("Starting js waku node with :", JSON.stringify(waku_options));
+  if (shardInfo) {
+    wakuOptions.shardInfo = shardInfo;
+  } else {
+    wakuOptions.pubsubTopics = pubsubTopics;
+  }
+
+  log.info("Starting js waku node with :", JSON.stringify(wakuOptions));
   let waku: LightNode | undefined;
   try {
-    waku = await createLightNode(waku_options);
+    waku = await createLightNode(wakuOptions);
     await waku.start();
   } catch (error) {
     log.error("jswaku node failed to start:", error);