@startuml
title PubSub — Recherche gossip globale (type "all") : Pair A cherche, Pair B répond

participant "App Pair A" as AppA
participant "NATS A" as NATSA
participant "Node A" as NodeA
participant "PubSubService A" as PubSubA
participant "GossipSub libp2p (mesh)" as GossipSub
participant "Node B" as NodeB
participant "PubSubService B" as PubSubB
participant "DB Pair B (oc-lib)" as DBB
participant "StreamService B" as StreamB
participant "StreamService A" as StreamA

AppA -> NATSA: Publish(PROPALGATION_EVENT, {PB_SEARCH, type:"all", search:"gpu"})
NATSA -> NodeA: ListenNATS → PB_SEARCH (type "all")

NodeA -> PubSubA: SearchPublishEvent(ctx, dt, "all", user, "gpu")
PubSubA -> PubSubA: publishEvent(PB_SEARCH, user, {search:"gpu"})
PubSubA -> PubSubA: GenerateNodeID() → from = DID_A
PubSubA -> PubSubA: priv_A.Sign(event body) → sig
PubSubA -> PubSubA: Build Event{Type:"search", From:DID_A, Payload:{search:"gpu"}, Sig}

PubSubA -> GossipSub: topic.Join("search")
PubSubA -> GossipSub: topic.Publish(ctx, json(Event))

GossipSub --> NodeB: Message propagé (gossip mesh)

NodeB -> PubSubB: subscribeEvents écoute topic "search#"
PubSubB -> PubSubB: json.Unmarshal → Event{From: DID_A}

PubSubB -> NodeB: GetPeerRecord(ctx, DID_A)
note over NodeB: Résolution Pair A via DB B ou Indexer
NodeB --> PubSubB: Peer A {PublicKey_A, Relation, ...}

PubSubB -> PubSubB: event.Verify(Peer A) → valide sig_A
PubSubB -> PubSubB: handleEventSearch(ctx, evt, PB_SEARCH)

PubSubB -> StreamB: SendResponse(Peer A, evt)
StreamB -> DBB: Search(COMPUTE + STORAGE + ..., filters{creator=self, access=PUBLIC OR partnerships[PeerID_A]}, search="gpu")
DBB --> StreamB: [Resource1, Resource2, ...]

loop Pour chaque ressource matchée
    StreamB -> StreamB: write(PeerID_A, addr_A, dt, resource JSON, ProtocolSearchResource)
    StreamB -> StreamA: NewStream /opencloud/resource/search/1.0
    StreamB -> StreamA: json.Encode(Event{Type:search, From:DID_B, DataType, Payload:resource})
end

StreamA -> StreamA: readLoop → handleEvent(ProtocolSearchResource, evt)
StreamA -> StreamA: retrieveResponse(evt)
StreamA -> NATSA: SetNATSPub(SEARCH_EVENT, {DataType, resource JSON})
NATSA -> AppA: Résultats de recherche de Pair B

@enduml