Add showing visible members that aren't us

based on very flaky display name checking for now

Peered/ContentView.swift

@@ -7,18 +7,28 @@
 
 import SwiftUI
 
+extension EnvironmentValues {
+	@Entry var ownPeer: OwnPeer = .fallback
+}
+
 struct ContentView: View {
   @AppStorage("peered_username") private var username: String = ""
   @State private var notes = [Note]()
 	@State private var notesClient: NoteEditingSessionClient?
+	@State private var ownPeer: OwnPeer?
 	
   var body: some View {
-		NavigationView {
+		NavigationStack {
 			List(notes) { note in
 				NavigationLink(note.name) {
-					NoteEditorScreen(note: note, username: username)
+					let peer = ownPeer ?? .init(peer: .init(displayName: username))
+					if ownPeer == nil {
+						ownPeer = peer
+					}
+					return NoteEditorScreen(note: note, peer: peer)
 				}
 			}
+			.environment(\.ownPeer, ownPeer ?? .fallback)
 			.navigationTitle("Peered")
 			.toolbar {
 					Button("Create note") {
@@ -30,7 +40,7 @@ struct ContentView: View {
 		.onAppear {
 			notes = NotesStorage().loadNotes()
 			if notesClient == nil {
-				notesClient = .init(id: username)
+				notesClient = .init(peer: .init(displayName: username))
 			}
 			notesClient?.startBrowsingForNotes()
 		}

Peered/NoteEditor/ManageMembersView.swift

@@ -0,0 +1,26 @@
+//
+//  ManageMembersView.swift
+//  Peered
+//
+//  Created by Oskar Chybowski on 06/10/2025.
+//
+import SwiftUI
+
+struct ManageMembersView: View {
+	@Bindable var noteAdvertiser: NoteEditingSessionServer
+	
+	var body: some View {
+		List(noteAdvertiser.visiblePeers) { peer in
+			HStack {
+				Text(peer.id)
+				
+				Spacer()
+				
+					PeerStateButton(peerState: peer.state) {
+						noteAdvertiser.invite(peer: peer)
+					}
+			}
+		}
+		.navigationTitle("Visible users")
+	}
+}

Peered/NoteEditor/NoteEditingSessionServer.swift

@@ -1,15 +1,39 @@
 import MultipeerConnectivity
 import Foundation
 
+struct OwnPeer {
+	let peer: MCPeerID
+	
+	static var fallback: Self { Self(peer: .init(displayName: "fallback_user")) }
+}
+
+struct Peer: Identifiable {
+	enum ConnectionState {
+		case available
+		case joined
+		case rejected
+		case invitationPending
+	}
+	
+	var id: String {
+		mcPeer.displayName
+	}
+	let mcPeer: MCPeerID
+	var state: ConnectionState
+}
+
 @Observable
 final class NoteEditingSessionServer: NSObject {
 	private let session: MCSession
 	private let browser: MCNearbyServiceBrowser
+	private let ownPeer: OwnPeer
 	
-	init(username: String) {
-		let peer = MCPeerID(displayName: username)
-		browser = .init(peer: peer, serviceType: "peered")
-		session = .init(peer: peer)
+	var visiblePeers: [Peer] = []
+	
+	init(peer: OwnPeer) {
+		ownPeer = peer
+		browser = .init(peer: peer.peer, serviceType: "peered")
+		session = .init(peer: peer.peer)
 		super.init()
 		browser.delegate = self
 	}
@@ -21,6 +45,16 @@ final class NoteEditingSessionServer: NSObject {
 	func stopServer() {
 		browser.stopBrowsingForPeers()
 	}
+	
+	func invite(peer: Peer) {
+		guard peer.state == .available else { return }
+		browser.invitePeer(
+			peer.mcPeer,
+			to: session,
+			withContext: nil, // FIXME: put note here?
+			timeout: 5
+		)
+	}
 }
 
 extension NoteEditingSessionServer: MCNearbyServiceBrowserDelegate {
@@ -29,9 +63,13 @@ extension NoteEditingSessionServer: MCNearbyServiceBrowserDelegate {
 		foundPeer peerID: MCPeerID,
 		withDiscoveryInfo info: [String : String]?
 	) {
-		browser.invitePeer(peerID, to: session, withContext: nil, timeout: 30)
-		print("seeing peer \(peerID.displayName)")
+		guard !visiblePeers.contains(where: { $0.mcPeer == peerID }) && peerID.displayName != ownPeer.peer.displayName else { return }
+		let newPeer = Peer(mcPeer: peerID, state: .available)
+		visiblePeers.append(newPeer)
 	}
 	
-	func browser(_ browser: MCNearbyServiceBrowser, lostPeer peerID: MCPeerID) {}
+	func browser(_ browser: MCNearbyServiceBrowser, lostPeer peerID: MCPeerID) {
+		guard let peerIdx = visiblePeers.firstIndex(where: { $0.mcPeer == peerID }) else { return }
+		visiblePeers.remove(at: peerIdx)
+	}
 }

Peered/NoteEditor/NoteEditorScreen.swift

@@ -6,6 +6,7 @@
 //
 
 import SwiftUI
+import MultipeerConnectivity
 
 struct NoteEditorScreen: View {
 	let note: Note
@@ -13,14 +14,27 @@ struct NoteEditorScreen: View {
 	@State private var noteContent: String = ""
 	@State private var timer = Timer.publish(every: 5, on: .current, in: .common)
 		.autoconnect()
+	@State private var showManageMembers = false
 	
-	init(note: Note, username: String) {
+	init(note: Note, peer: OwnPeer) {
 		self.note = note
-		self._noteAdvertiser = .init(wrappedValue: .init(username: username))
+		self._noteAdvertiser = .init(initialValue: .init(peer: peer))
 	}
 	
 	var body: some View {
 		TextEditor(text: $noteContent)
+			.toolbar {
+				ToolbarItem(placement: .primaryAction) {
+					Button("Manage members") {
+						showManageMembers = true
+					}
+				}
+			}
+			.sheet(isPresented: $showManageMembers) {
+				NavigationStack {
+					ManageMembersView(noteAdvertiser: noteAdvertiser)
+				}
+			}
 			.onAppear {
 				noteContent = try! String(contentsOf: note.path, encoding: .utf8)
 				noteAdvertiser.startServer()

Peered/NoteEditor/PeerStateButton.swift

@@ -0,0 +1,26 @@
+//
+//  PeerStateButton.swift
+//  Peered
+//
+//  Created by Oskar Chybowski on 06/10/2025.
+//
+
+import SwiftUI
+
+struct PeerStateButton: View {
+	let peerState: Peer.ConnectionState
+	let onTap: () -> Void
+	
+	var body: some View {
+		switch peerState {
+		case .available:
+			Button("Invite", action: onTap)
+		case .joined:
+			Text("Joined")
+		case .rejected:
+			Text("Rejected")
+		case .invitationPending:
+			Text("Invitation pending")
+		}
+	}
+}

Peered/NotesList/NoteEditingSessionClient.swift

@@ -13,16 +13,17 @@ import Foundation
 final class NoteEditingSessionClient: NSObject {
 	private let session: MCSession
 	private let advertiser: MCNearbyServiceAdvertiser
+	private let ownPeer: MCPeerID
 
-	init(id: String) {
-		let id = MCPeerID(displayName: id)
+	init(peer: MCPeerID) {
+		ownPeer = peer
 		session = MCSession(
-			peer: id,
+			peer: peer,
 			securityIdentity: nil,
 			encryptionPreference: .required
 		)
 		advertiser = MCNearbyServiceAdvertiser(
-			peer: id,
+			peer: peer,
 			discoveryInfo: [:],
 			serviceType: "peered"
 		)