feat: propose `preset` option instead of deducing from cluster-id

waku/factory/external_config.nim

@@ -127,6 +127,12 @@ type WakuNodeConf* = object
     .}: seq[ProtectedTopic]
 
     ## General node config
+    preset* {.
+      desc: "Network preset to use." & "Must be one of 'default'",
+      defaultValue: "default",
+      name: "preset"
+    .}: string
+
     clusterId* {.
       desc:
         "Cluster id that the node is running in. Node in a different cluster id is disconnected.",
@@ -253,7 +259,9 @@ type WakuNodeConf* = object
     .}: seq[string]
 
     shards* {.
-      desc: "Shards index to subscribe to [0.." & $MaxShardIndex & "]. Argument may be repeated.",
+      desc:
+        "Shards index to subscribe to [0.." & $MaxShardIndex &
+        "]. Argument may be repeated.",
       defaultValue: @[],
       name: "shard"
     .}: seq[uint16]

waku/factory/waku.nim

@@ -91,16 +91,8 @@ proc init*(T: type Waku, conf: WakuNodeConf): Result[Waku, string] =
 
   logging.setupLog(conf.logLevel, conf.logFormat)
 
-  case confCopy.clusterId
-
-  # cluster-id=0
-  of 0:
-    let clusterZeroConf = ClusterConf.ClusterZeroConf()
-    confCopy.pubsubTopics = clusterZeroConf.pubsubTopics
-    # TODO: Write some template to "merge" the configs
-
-  # cluster-id=1 (aka The Waku Network)
-  of 1:
+  case confCopy.preset
+  of "default":
     let twnClusterConf = ClusterConf.TheWakuNetworkConf()
     if len(confCopy.shards) != 0:
       confCopy.pubsubTopics =
@@ -123,6 +115,7 @@ proc init*(T: type Waku, conf: WakuNodeConf): Result[Waku, string] =
   else:
     discard
 
+  # TODO: check that confCopy.shards are valid against the preset
   info "Running nwaku node", version = git_version
   logConfig(confCopy)