Add shared contact functionality (WIP)

Feel free to hijack and make it not terrible

Meshtastic.xcodeproj/project.pbxproj

@@ -7,6 +7,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		108FFECB2DD3F43C00BFAA81 /* ShareContactQRDialog.swift in Sources */ = {isa = PBXBuildFile; fileRef = 108FFECA2DD3F43C00BFAA81 /* ShareContactQRDialog.swift */; };
+		108FFECD2DD4005600BFAA81 /* NodeInfoEntityToNodeInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = 108FFECC2DD4005600BFAA81 /* NodeInfoEntityToNodeInfo.swift */; };
 		231B3F212D087A4C0069A07D /* MetricTableColumn.swift in Sources */ = {isa = PBXBuildFile; fileRef = 231B3F202D087A4C0069A07D /* MetricTableColumn.swift */; };
 		231B3F222D087A4C0069A07D /* MetricsColumnList.swift in Sources */ = {isa = PBXBuildFile; fileRef = 231B3F1F2D087A4C0069A07D /* MetricsColumnList.swift */; };
 		231B3F252D087C3C0069A07D /* EnvironmentDefaultColumns.swift in Sources */ = {isa = PBXBuildFile; fileRef = 231B3F242D087C3C0069A07D /* EnvironmentDefaultColumns.swift */; };
@@ -274,6 +276,8 @@
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
+		108FFECA2DD3F43C00BFAA81 /* ShareContactQRDialog.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ShareContactQRDialog.swift; sourceTree = "<group>"; };
+		108FFECC2DD4005600BFAA81 /* NodeInfoEntityToNodeInfo.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NodeInfoEntityToNodeInfo.swift; sourceTree = "<group>"; };
 		231B3F1F2D087A4C0069A07D /* MetricsColumnList.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MetricsColumnList.swift; sourceTree = "<group>"; };
 		231B3F202D087A4C0069A07D /* MetricTableColumn.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MetricTableColumn.swift; sourceTree = "<group>"; };
 		231B3F242D087C3C0069A07D /* EnvironmentDefaultColumns.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EnvironmentDefaultColumns.swift; sourceTree = "<group>"; };
@@ -701,6 +705,7 @@
 		DD007BB12AA59B9A00F5FA12 /* CoreData */ = {
 			isa = PBXGroup;
 			children = (
+				108FFECC2DD4005600BFAA81 /* NodeInfoEntityToNodeInfo.swift */,
 				2344A2AA2D66973D00170A77 /* ManagedAttributePropertyWrapper.swift */,
 				DD58C5F12919AD3C00D5BEFB /* ChannelEntityExtension.swift */,
 				6DEDA55B2A9592F900321D2E /* MessageEntityExtension.swift */,
@@ -1101,6 +1106,7 @@
 		DDDB26402AABEF7B003AFCB7 /* Helpers */ = {
 			isa = PBXGroup;
 			children = (
+				108FFECA2DD3F43C00BFAA81 /* ShareContactQRDialog.swift */,
 				231B3F232D087C020069A07D /* Metrics Columns */,
 				DDAD49EB2AFAE82500B4425D /* Map */,
 				DDDB26432AAC0206003AFCB7 /* NodeDetail.swift */,
@@ -1396,6 +1402,7 @@
 				DD4640202AFF10F4002A5ECB /* WaypointForm.swift in Sources */,
 				233E99C12D849D6000CC3A77 /* DistanceCompactWidget.swift in Sources */,
 				DD769E0328D18BF1001A3F05 /* DeviceMetricsLog.swift in Sources */,
+				108FFECD2DD4005600BFAA81 /* NodeInfoEntityToNodeInfo.swift in Sources */,
 				DDAF8C5326EB1DF10058C060 /* BLEManager.swift in Sources */,
 				DD15E4F32B8BA56E00654F61 /* PaxCounterConfig.swift in Sources */,
 				DDDB445229F8ACF900EE2349 /* Date.swift in Sources */,
@@ -1486,6 +1493,7 @@
 				DDA1C48E28DB49D3009933EC /* ChannelRoles.swift in Sources */,
 				DDD5BB092C285DDC007E03CA /* AppLog.swift in Sources */,
 				DD8ED9C8289CE4B900B3B0AB /* RoutingError.swift in Sources */,
+				108FFECB2DD3F43C00BFAA81 /* ShareContactQRDialog.swift in Sources */,
 				233E99C52D84A0B600CC3A77 /* CompactWidget.swift in Sources */,
 				DDC1B81A2AB5377B00C71E39 /* MessagesTips.swift in Sources */,
 				DD964FC62975DBFD007C176F /* QueryCoreData.swift in Sources */,

Meshtastic/Extensions/CoreData/NodeInfoEntityToNodeInfo.swift

@@ -0,0 +1,26 @@
+// NodeInfoEntityToNodeInfo.swift
+// Meshtastic
+//
+// Utility to convert NodeInfoEntity (Core Data) to NodeInfo (protobuf)
+
+import Foundation
+import MeshtasticProtobufs
+
+extension NodeInfoEntity {
+    func toProto() -> NodeInfo {
+        var userProto = User()
+        if let user = self.user {
+            userProto.id = user.userId ?? ""
+            userProto.longName = user.longName ?? ""
+            userProto.shortName = user.shortName ?? ""
+			userProto.hwModel = HardwareModel(rawValue: Int(user.hwModelId))!;            userProto.isLicensed = user.isLicensed
+			userProto.role = Config.DeviceConfig.Role(rawValue: Int(user.role))!
+			userProto.publicKey = user.publicKey?.subdata(in: 0..<user.publicKey!.count) ?? Data()
+        }
+        var node = NodeInfo()
+        node.num = UInt32(self.num)
+        node.user = userProto
+        // Add more fields as needed
+        return node
+    }
+}

Meshtastic/Helpers/BLEManager.swift

@@ -1770,6 +1770,55 @@ class BLEManager: NSObject, CBPeripheralDelegate, MqttClientProxyManagerDelegate
 		return false
 	}
 
+	public func addContactFromURL(base64UrlString: String) -> Bool {
+		if isConnected {
+
+			let decodedString = base64UrlString.base64urlToBase64()
+			if let decodedData = Data(base64Encoded: decodedString) {
+				do {
+					let contact: SharedContact = try SharedContact(serializedBytes: decodedData)
+					var adminPacket = AdminMessage()
+					adminPacket.addContact = contact
+					var meshPacket: MeshPacket = MeshPacket()
+					meshPacket.to = UInt32(connectedPeripheral.num)
+					meshPacket.from	= UInt32(connectedPeripheral.num)
+					meshPacket.id = UInt32.random(in: UInt32(UInt8.max)..<UInt32.max)
+					meshPacket.priority =  MeshPacket.Priority.reliable
+					meshPacket.wantAck = true
+					meshPacket.channel = 0
+					var dataMessage = DataMessage()
+					guard let adminData: Data = try? adminPacket.serializedData() else {
+						return false
+					}
+					dataMessage.payload = adminData
+					dataMessage.portnum = PortNum.adminApp
+					meshPacket.decoded = dataMessage
+					var toRadio: ToRadio!
+					toRadio = ToRadio()
+					toRadio.packet = meshPacket
+					guard let binaryData: Data = try? toRadio.serializedData() else {
+						return false
+					}
+					if connectedPeripheral?.peripheral.state ?? CBPeripheralState.disconnected == CBPeripheralState.connected {
+						self.connectedPeripheral.peripheral.writeValue(binaryData, for: self.TORADIO_characteristic, type: .withResponse)
+						let logString = String.localizedStringWithFormat("Sent a LoRa.Config for: %@".localized, String(connectedPeripheral.num))
+						Logger.mesh.info("📻 \(logString, privacy: .public)")
+					}
+
+					if self.connectedPeripheral != nil {
+						self.sendWantConfig()
+						return true
+					}
+
+				} catch {
+					return false
+				}
+			}
+		}
+		return false
+	}
+
+
 	public func saveUser(config: User, fromUser: UserEntity, toUser: UserEntity, adminIndex: Int32) -> Int64 {
 		var adminPacket = AdminMessage()
 		adminPacket.setOwner = config

Meshtastic/Meshtastic.entitlements

@@ -7,6 +7,7 @@
 	<key>com.apple.developer.associated-domains</key>
 	<array>
 		<string>applinks:meshtastic.org/e/*</string>
+		<string>applinks:meshtastic.org/v/*</string>
 	</array>
 	<key>com.apple.developer.weatherkit</key>
 	<true/>

Meshtastic/MeshtasticApp.swift

@@ -4,6 +4,7 @@ import SwiftUI
 import CoreData
 import OSLog
 import TipKit
+import MeshtasticProtobufs
 
 @main
 struct MeshtasticAppleApp: App {
@@ -87,7 +88,63 @@ struct MeshtasticAppleApp: App {
 
 				Logger.mesh.debug("Some sort of URL was received \(url, privacy: .public)")
 				self.incomingUrl = url
-				if url.absoluteString.lowercased().contains("meshtastic.org/e/#") {
+				if url.absoluteString.lowercased().contains("meshtastic.org/v/#") {
+					if let components = self.incomingUrl?.absoluteString.components(separatedBy: "#") {
+						// Extract contact information from the URL
+						if let contactData = components.last {
+							
+							let decodedString = contactData.base64urlToBase64()
+							if let decodedData = Data(base64Encoded: decodedString) {
+								do {
+									let contact = try MeshtasticProtobufs.SharedContact(serializedBytes: decodedData)
+									
+									// Show an alert to confirm adding the contact
+									let alertController = UIAlertController(
+										title: "Add Contact",
+										message: "Would you like to add \(contact.user.longName) as a  contact?",
+										preferredStyle: .alert
+									)
+									
+									alertController.addAction(UIAlertAction(
+										title: "Yes",
+										style: .default,
+										handler: { _ in
+											let success = BLEManager.shared.addContactFromURL(base64UrlString: contactData)
+											Logger.services.debug("Contact added from URL: \(success ? "success" : "failed")")
+										}
+									))
+									
+									alertController.addAction(UIAlertAction(
+										title: "No",
+										style: .cancel,
+										handler: nil
+									))
+									
+									// Present the alert
+									if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
+									   let rootViewController = windowScene.windows.first?.rootViewController {
+										rootViewController.present(alertController, animated: true)
+									}
+									Logger.services.debug("Contact data extracted from URL: \(contactData, privacy: .public)")
+								} catch {
+									Logger.services.error("Failed to parse contact data: \(error.localizedDescription, privacy: .public)")
+									
+									// Show error alert to user
+									if let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
+									   let rootViewController = windowScene.windows.first?.rootViewController {
+										let errorAlert = UIAlertController(
+											title: "Error",
+											message: "Could not process contact information. Invalid format.",
+											preferredStyle: .alert
+										)
+										errorAlert.addAction(UIAlertAction(title: "OK", style: .default))
+										rootViewController.present(errorAlert, animated: true)
+									}
+								}
+							}
+						}
+					}
+				} else if url.absoluteString.lowercased().contains("meshtastic.org/e/#") {
 					if let components = self.incomingUrl?.absoluteString.components(separatedBy: "#") {
 						self.addChannels = Bool(self.incomingUrl?["add"] ?? "false") ?? false
 						if self.incomingUrl?.absoluteString.lowercased().contains("?") != nil {
@@ -119,7 +176,7 @@ struct MeshtasticAppleApp: App {
 						.displayFrequency(.immediate)
 					]
 				)
-			}
+            }
 		}
 		.onChange(of: scenePhase) { (_, newScenePhase) in
 			switch newScenePhase {

Meshtastic/Views/Nodes/Helpers/ShareContactQRDialog.swift

@@ -0,0 +1,91 @@
+//  ShareContactQRDialog.swift
+//  Meshtastic
+//
+//  Created by GitHub Copilot on 5/13/25.
+
+import SwiftUI
+import CoreImage.CIFilterBuiltins
+#if canImport(UIKit)
+import UIKit
+#endif
+import CoreData
+import MeshtasticProtobufs
+import OSLog
+
+struct ShareContactQRDialog: View {
+    let node: NodeInfo
+    @Environment(\.dismiss) private var dismiss
+    
+    var qrString: String {
+		var contact = SharedContact()
+		contact.nodeNum = node.num
+		contact.user = node.user
+		
+        do {
+            let contactString = try contact.serializedData().base64EncodedString()
+			return ("https://meshtastic.org/v/#" + contactString.base64ToBase64url())
+        } catch {
+			Logger.services.error("Error serializing contact: \(error)")
+            return "Error generating QR code"
+        }
+		
+    }
+    
+    var qrImage: UIImage {
+        let context = CIContext()
+        let filter = CIFilter.qrCodeGenerator()
+        filter.setValue(Data(qrString.utf8), forKey: "inputMessage")
+        let transform = CGAffineTransform(scaleX: 10, y: 10)
+        if let outputImage = filter.outputImage?.transformed(by: transform),
+           let cgimg = context.createCGImage(outputImage, from: outputImage.extent) {
+            return UIImage(cgImage: cgimg)
+        }
+        return UIImage(systemName: "xmark.circle") ?? UIImage()
+    }
+    
+    var body: some View {
+        VStack(spacing: 20) {
+            Text("Share Contact QR")
+                .font(.title2)
+                .padding(.top)
+			Text(node.user.longName)
+                .font(.headline)
+            Image(uiImage: qrImage)
+                .interpolation(.none)
+                .resizable()
+                .scaledToFit()
+                .frame(width: 220, height: 220)
+                .background(Color(.systemBackground))
+                .cornerRadius(16)
+                .shadow(radius: 4)
+			Text("Scan this QR code to add \(node.user.longName) to another device.")
+                .font(.subheadline)
+                .multilineTextAlignment(.center)
+                .foregroundColor(.secondary)
+            Button("Done") { dismiss() }
+                .buttonStyle(.borderedProminent)
+                .padding(.bottom)
+        }
+        .padding()
+        .frame(maxWidth: 350)
+    }
+}
+
+#if DEBUG
+struct ShareContactQRDialog_Previews: PreviewProvider {
+    static var previews: some View {
+        var node = NodeInfo()
+		node.num = 123456
+		var userProto = User()
+			userProto.id = "!1234"
+			userProto.longName = "Bud"
+			userProto.shortName = "Bud"
+			userProto.hwModel = HardwareModel(rawValue:1)!;
+			userProto.role = Config.DeviceConfig.Role(rawValue: 1)!
+			userProto.publicKey = Data()
+		node.user = userProto
+
+        return ShareContactQRDialog(node: node)
+    }
+}
+#endif

Meshtastic/Views/Nodes/NodeList.swift

@@ -40,6 +40,8 @@ struct NodeList: View {
 	@State private var isPresentingPositionFailedAlert = false
 	@State private var isPresentingDeleteNodeAlert = false
 	@State private var deleteNodeId: Int64 = 0
+    @State private var isPresentingShareContactQR = false
+    @State private var shareContactNode: NodeInfoEntity?
 
 	var boolFilters: [Bool] {[
 		isFavorite,
@@ -78,6 +80,12 @@ struct NodeList: View {
 		/// Allow users to mute notifications for a node even if they are not connected
 		if let user = node.user {
 			NodeAlertsButton(context: context, node: node, user: user)
+            Button(action: {
+                shareContactNode = node
+                isPresentingShareContactQR = true
+            }) {
+                Label("Share Contact QR", systemImage: "qrcode")
+            }
 		}
 		if let connectedNode {
 			/// Favoriting a node requires being connected
@@ -223,6 +231,11 @@ struct NodeList: View {
 						}
 					}
 				}
+			 }
+			.sheet(isPresented: $isPresentingShareContactQR) {
+				if let node = shareContactNode {
+					ShareContactQRDialog(node: node.toProto())
+				}
 			}
 			.navigationSplitViewColumnWidth(min: 100, ideal: 250, max: 500)
 			.navigationBarItems(