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Feat/georelay (#504)

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* feat(georelay): route geohash kind 20000 via nearest relays; add GeoRelayDirectory; target geohash subscriptions; avoid duplicate connections

* feat(georelay): fetch daily from remote CSV with fallback to bundled; cache to app support; prefetch on app load

* fix(georelay): make CSV parser nonisolated and call as Self.parseCSV to satisfy Swift 6 actor isolation

---------

Co-authored-by: jack <jackjackbits@users.noreply.github.com>
This commit is contained in:
jack
2025-08-24 12:49:52 +02:00
committed by GitHub
co-authored by jack
parent d2bfbbcfd4
commit 75c8933091
7 changed files with 545 additions and 12 deletions
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bitchat/ViewModels/ChatViewModel.swift
+29 -6
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@@ -711,7 +711,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
// Unsubscribe + resubscribe
NostrRelayManager.shared.unsubscribe(id: subID)
let filter = NostrFilter.geohashEphemeral(ch.geohash, since: Date().addingTimeInterval(-3600), limit: 200)
NostrRelayManager.shared.subscribe(filter: filter, id: subID) { [weak self] event in
let subRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
NostrRelayManager.shared.subscribe(filter: filter, id: subID, relayUrls: subRelays) { [weak self] event in
guard let self = self else { return }
guard event.kind == NostrProtocol.EventKind.ephemeralEvent.rawValue else { return }
if self.processedNostrEvents.contains(event.id) { return }
@@ -1275,7 +1276,12 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
nickname: self.nickname,
teleported: LocationChannelManager.shared.teleported
)
NostrRelayManager.shared.sendEvent(event)
let targetRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
if targetRelays.isEmpty {
SecureLogger.log("Geo: no geohash relays available for \(ch.geohash); not sending", category: SecureLogger.session, level: .warning)
} else {
NostrRelayManager.shared.sendEvent(event, to: targetRelays)
}
// Track ourselves as active participant
self.recordGeoParticipant(pubkeyHex: identity.publicKeyHex)
SecureLogger.log("GeoTeleport: sent geo message pub=\(identity.publicKeyHex.prefix(8))… teleported=\(LocationChannelManager.shared.teleported)",
@@ -1359,7 +1365,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
geoSubscriptionID = subID
startGeoParticipantsTimer()
let filter = NostrFilter.geohashEphemeral(ch.geohash, since: Date().addingTimeInterval(-3600), limit: 200)
NostrRelayManager.shared.subscribe(filter: filter, id: subID) { [weak self] event in
let subRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
NostrRelayManager.shared.subscribe(filter: filter, id: subID, relayUrls: subRelays) { [weak self] event in
guard let self = self else { return }
// Only handle ephemeral kind 20000 with matching tag
guard event.kind == NostrProtocol.EventKind.ephemeralEvent.rawValue else { return }
@@ -1730,7 +1737,8 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
let subID = "geo-sample-\(gh)"
geoSamplingSubs[subID] = gh
let filter = NostrFilter.geohashEphemeral(gh, since: Date().addingTimeInterval(-300), limit: 100)
NostrRelayManager.shared.subscribe(filter: filter, id: subID) { [weak self] event in
let subRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: gh, count: 5)
NostrRelayManager.shared.subscribe(filter: filter, id: subID, relayUrls: subRelays) { [weak self] event in
guard let self = self else { return }
guard event.kind == NostrProtocol.EventKind.ephemeralEvent.rawValue else { return }
// Update participants for this specific geohash
@@ -2478,7 +2486,17 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
nickname: self.nickname,
teleported: LocationChannelManager.shared.teleported
)
NostrRelayManager.shared.sendEvent(event)
let targetRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
if targetRelays.isEmpty {
let targetRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
if targetRelays.isEmpty {
SecureLogger.log("Geo: no geohash relays available for \(ch.geohash); not sending", category: SecureLogger.session, level: .warning)
} else {
NostrRelayManager.shared.sendEvent(event, to: targetRelays)
}
} else {
NostrRelayManager.shared.sendEvent(event, to: targetRelays)
}
// Track ourselves as active participant
self.recordGeoParticipant(pubkeyHex: identity.publicKeyHex)
} catch {
@@ -4276,7 +4294,12 @@ class ChatViewModel: ObservableObject, BitchatDelegate {
nickname: self.nickname,
teleported: LocationChannelManager.shared.teleported
)
NostrRelayManager.shared.sendEvent(event)
let targetRelays = GeoRelayDirectory.shared.closestRelays(toGeohash: ch.geohash, count: 5)
if targetRelays.isEmpty {
NostrRelayManager.shared.sendEvent(event)
} else {
NostrRelayManager.shared.sendEvent(event, to: targetRelays)
}
} catch {
SecureLogger.log("❌ Failed to send geohash raw message: \(error)", category: SecureLogger.session, level: .error)
}