@startuml
title Node Initialization — Peer A (InitNode)

participant "main (Peer A)" as MainA
participant "Node A" as NodeA
participant "libp2p (Peer A)" as libp2pA
participant "DB Peer A (oc-lib)" as DBA
participant "NATS A" as NATSA
participant "Indexer (partagé)" as IndexerA
participant "StreamService A" as StreamA
participant "PubSubService A" as PubSubA

MainA -> NodeA: InitNode(isNode, isIndexer, isNativeIndexer)

NodeA -> NodeA: LoadKeyFromFilePrivate() → priv
NodeA -> NodeA: LoadPSKFromFile() → psk

NodeA -> libp2pA: New(PrivateNetwork(psk), Identity(priv), ListenAddr:4001)
libp2pA --> NodeA: host A (PeerID_A)

note over NodeA: isNode == true

NodeA -> libp2pA: NewGossipSub(ctx, host)
libp2pA --> NodeA: ps (GossipSub)

NodeA -> IndexerA: ConnectToIndexers → SendHeartbeat /opencloud/heartbeat/1.0
note over IndexerA: Heartbeat long-lived established\nQuality Score evaluated (bw + uptime + diversity)
IndexerA --> NodeA: OK

NodeA -> NodeA: claimInfo(name, hostname)
NodeA -> IndexerA: TempStream /opencloud/record/publish/1.0
NodeA -> IndexerA: stream.Encode(PeerRecord A signé)
IndexerA -> IndexerA: DHT.PutValue("/node/"+DID_A, record)

NodeA -> DBA: DB(PEER).Search(SELF)
DBA --> NodeA: local peer A (or new generated UUID)

NodeA -> NodeA: StartGC(30s) — GarbageCollector on StreamRecords

NodeA -> StreamA: InitStream(ctx, host, PeerID_A, 1000, nodeA)
StreamA -> StreamA: SetStreamHandler(heartbeat/partner, search, planner, ...)
StreamA -> DBA: Search(PEER, PARTNER) → partner list
DBA --> StreamA: Heartbeat long-lived established to partners
StreamA --> NodeA: StreamService A

NodeA -> PubSubA: InitPubSub(ctx, host, ps, nodeA, streamA)
PubSubA -> PubSubA: subscribeEvents(PB_SEARCH, timeout=-1)
PubSubA --> NodeA: PubSubService A

NodeA -> NodeA: SubscribeToSearch(ps, callback) (search global topic for resources)
note over NodeA: callback: GetPeerRecord(evt.From)\n→ StreamService.SendResponse

NodeA -> NATSA: ListenNATS(nodeA)
note over NATSA: Subscribes handlers:\nCREATE_RESOURCE, PROPALGATION_EVENT

NodeA --> MainA: *Node A is ready

@enduml