Implement hashtag rooms feature

- Add room field to BitchatMessage structure
- Update BinaryProtocol to encode/decode room information
- Create room management in ChatViewModel (join/leave/switch rooms)
- Add BluetoothMeshService support for room messages
- Implement rooms UI in sidebar with unread counts
- Create clickable hashtags in messages to join rooms
- Add room persistence across app restarts
- Filter message display by current room selection

bitchat/Protocols/BinaryProtocol.swift

@@ -193,6 +193,7 @@ extension BitchatMessage {
         // - Recipient nickname length + data
         // - Sender peer ID length + data
         // - Mentions array
+        // - Room hashtag
         
         var flags: UInt8 = 0
         if isRelay { flags |= 0x01 }
@@ -201,6 +202,7 @@ extension BitchatMessage {
         if recipientNickname != nil { flags |= 0x08 }
         if senderPeerID != nil { flags |= 0x10 }
         if mentions != nil && !mentions!.isEmpty { flags |= 0x20 }
+        if room != nil { flags |= 0x40 }
         
         data.append(flags)
         
@@ -267,6 +269,12 @@ extension BitchatMessage {
             }
         }
         
+        // Room hashtag
+        if let room = room, let roomData = room.data(using: .utf8) {
+            data.append(UInt8(min(roomData.count, 255)))
+            data.append(roomData.prefix(255))
+        }
+        
         return data
     }
     
@@ -292,6 +300,7 @@ extension BitchatMessage {
         let hasRecipientNickname = (flags & 0x08) != 0
         let hasSenderPeerID = (flags & 0x10) != 0
         let hasMentions = (flags & 0x20) != 0
+        let hasRoom = (flags & 0x40) != 0
         
         // Timestamp
         guard offset + 8 <= dataCopy.count else { 
@@ -389,6 +398,16 @@ extension BitchatMessage {
             }
         }
         
+        // Room
+        var room: String? = nil
+        if hasRoom && offset < dataCopy.count {
+            let length = Int(dataCopy[offset]); offset += 1
+            if offset + length <= dataCopy.count {
+                room = String(data: dataCopy[offset..<offset+length], encoding: .utf8)
+                offset += length
+            }
+        }
+        
         let message = BitchatMessage(
             sender: sender,
             content: content,
@@ -398,7 +417,8 @@ extension BitchatMessage {
             isPrivate: isPrivate,
             recipientNickname: recipientNickname,
             senderPeerID: senderPeerID,
-            mentions: mentions
+            mentions: mentions,
+            room: room
         )
         return message
     }

bitchat/Protocols/BitchatProtocol.swift

@@ -133,8 +133,9 @@ struct BitchatMessage: Codable, Equatable {
     let recipientNickname: String?
     let senderPeerID: String?
     let mentions: [String]?  // Array of mentioned nicknames
+    let room: String?  // Room hashtag (e.g., "#general")
     
-    init(sender: String, content: String, timestamp: Date, isRelay: Bool, originalSender: String? = nil, isPrivate: Bool = false, recipientNickname: String? = nil, senderPeerID: String? = nil, mentions: [String]? = nil) {
+    init(sender: String, content: String, timestamp: Date, isRelay: Bool, originalSender: String? = nil, isPrivate: Bool = false, recipientNickname: String? = nil, senderPeerID: String? = nil, mentions: [String]? = nil, room: String? = nil) {
         self.id = UUID().uuidString
         self.sender = sender
         self.content = content
@@ -145,6 +146,7 @@ struct BitchatMessage: Codable, Equatable {
         self.recipientNickname = recipientNickname
         self.senderPeerID = senderPeerID
         self.mentions = mentions
+        self.room = room
     }
 }
 

bitchat/Services/BluetoothMeshService.swift

@@ -507,7 +507,7 @@ class BluetoothMeshService: NSObject {
         self.characteristic = characteristic
     }
     
-    func sendMessage(_ content: String, mentions: [String] = [], to recipientID: String? = nil) {
+    func sendMessage(_ content: String, mentions: [String] = [], room: String? = nil, to recipientID: String? = nil) {
         messageQueue.async { [weak self] in
             guard let self = self else { return }
             
@@ -520,7 +520,8 @@ class BluetoothMeshService: NSObject {
                 timestamp: Date(),
                 isRelay: false,
                 originalSender: nil,
-                mentions: mentions.isEmpty ? nil : mentions
+                mentions: mentions.isEmpty ? nil : mentions,
+                room: room
             )
             
             if let messageData = message.toBinaryPayload() {
@@ -847,11 +848,9 @@ class BluetoothMeshService: NSObject {
             processedKeyExchanges = processedKeyExchanges.filter { !$0.contains(peerID) }
             
             peerNicknamesLock.lock()
-            let nickname = peerNicknames[peerID]
             peerNicknames.removeValue(forKey: peerID)
             peerNicknamesLock.unlock()
             
-            let lastSeenAgo = peerLastSeenTimestamps[peerID].map { now.timeIntervalSince($0) } ?? 999
             // Removed stale peer
         }
         activePeersLock.unlock()

bitchat/ViewModels/ChatViewModel.swift

@@ -34,10 +34,17 @@ class ChatViewModel: ObservableObject {
     @Published var autocompleteRange: NSRange? = nil
     @Published var selectedAutocompleteIndex: Int = 0
     
+    // Room support
+    @Published var joinedRooms: Set<String> = []  // Set of room hashtags
+    @Published var currentRoom: String? = nil  // Currently selected room
+    @Published var roomMessages: [String: [BitchatMessage]] = [:]  // room -> messages
+    @Published var unreadRoomMessages: [String: Int] = [:]  // room -> unread count
+    
     let meshService = BluetoothMeshService()
     private let userDefaults = UserDefaults.standard
     private let nicknameKey = "bitchat.nickname"
     private let favoritesKey = "bitchat.favorites"
+    private let joinedRoomsKey = "bitchat.joinedRooms"
     private var nicknameSaveTimer: Timer?
     
     @Published var favoritePeers: Set<String> = []  // Now stores public key fingerprints instead of peer IDs
@@ -48,6 +55,7 @@ class ChatViewModel: ObservableObject {
     init() {
         loadNickname()
         loadFavorites()
+        loadJoinedRooms()
         meshService.delegate = self
         
         // Start mesh service immediately
@@ -85,6 +93,79 @@ class ChatViewModel: ObservableObject {
         userDefaults.synchronize()
     }
     
+    private func loadJoinedRooms() {
+        if let savedRooms = userDefaults.stringArray(forKey: joinedRoomsKey) {
+            joinedRooms = Set(savedRooms)
+        }
+    }
+    
+    private func saveJoinedRooms() {
+        userDefaults.set(Array(joinedRooms), forKey: joinedRoomsKey)
+        userDefaults.synchronize()
+    }
+    
+    func joinRoom(_ room: String) {
+        // Ensure room starts with #
+        let roomTag = room.hasPrefix("#") ? room : "#\(room)"
+        joinedRooms.insert(roomTag)
+        saveJoinedRooms()
+        
+        // Switch to the room
+        currentRoom = roomTag
+        selectedPrivateChatPeer = nil  // Exit private chat if in one
+        
+        // Clear unread count for this room
+        unreadRoomMessages[roomTag] = 0
+        
+        // Initialize room messages if needed
+        if roomMessages[roomTag] == nil {
+            roomMessages[roomTag] = []
+        }
+    }
+    
+    func leaveRoom(_ room: String) {
+        joinedRooms.remove(room)
+        saveJoinedRooms()
+        
+        // If we're currently in this room, exit to main chat
+        if currentRoom == room {
+            currentRoom = nil
+        }
+        
+        // Keep messages for now (could clear if desired)
+        unreadRoomMessages.removeValue(forKey: room)
+    }
+    
+    func switchToRoom(_ room: String?) {
+        currentRoom = room
+        selectedPrivateChatPeer = nil  // Exit private chat
+        
+        // Clear unread count for this room
+        if let room = room {
+            unreadRoomMessages[room] = 0
+        }
+    }
+    
+    func getRoomMessages(_ room: String) -> [BitchatMessage] {
+        return roomMessages[room] ?? []
+    }
+    
+    func parseRooms(from content: String) -> Set<String> {
+        let pattern = "#([a-zA-Z0-9_]+)"
+        let regex = try? NSRegularExpression(pattern: pattern, options: [])
+        let matches = regex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
+        
+        var rooms = Set<String>()
+        for match in matches {
+            if let range = Range(match.range(at: 0), in: content) {
+                let room = String(content[range])
+                rooms.insert(room)
+            }
+        }
+        
+        return rooms
+    }
+    
     func toggleFavorite(peerID: String) {
         // Use public key fingerprints for persistent favorites
         guard let fingerprint = peerIDToPublicKeyFingerprint[peerID] else {
@@ -134,8 +215,12 @@ class ChatViewModel: ObservableObject {
             // Send as private message
             sendPrivateMessage(content, to: selectedPeer)
         } else {
-            // Parse mentions from the content
+            // Parse mentions and rooms from the content
             let mentions = parseMentions(from: content)
+            let rooms = parseRooms(from: content)
+            
+            // Determine which room this message belongs to
+            let messageRoom = currentRoom  // Use current room if we're in one
             
             // Add message to local display
             let message = BitchatMessage(
@@ -144,12 +229,30 @@ class ChatViewModel: ObservableObject {
                 timestamp: Date(),
                 isRelay: false,
                 originalSender: nil,
-                mentions: mentions.isEmpty ? nil : mentions
+                mentions: mentions.isEmpty ? nil : mentions,
+                room: messageRoom
             )
-            messages.append(message)
             
-            // Send via mesh with mentions
-            meshService.sendMessage(content, mentions: mentions)
+            if let room = messageRoom {
+                // Add to room messages
+                if roomMessages[room] == nil {
+                    roomMessages[room] = []
+                }
+                roomMessages[room]?.append(message)
+            } else {
+                // Add to main messages
+                messages.append(message)
+            }
+            
+            // Auto-join any new rooms mentioned in the message
+            for room in rooms {
+                if !joinedRooms.contains(room) {
+                    joinRoom(room)
+                }
+            }
+            
+            // Send via mesh with mentions and room
+            meshService.sendMessage(content, mentions: mentions, room: messageRoom)
         }
     }
     
@@ -349,16 +452,31 @@ class ChatViewModel: ObservableObject {
         let contentText = message.content
         var processedContent = AttributedString()
         
-        // Regular expression to find @mentions
-        let pattern = "@([a-zA-Z0-9_]+)"
-        let regex = try? NSRegularExpression(pattern: pattern, options: [])
-        let matches = regex?.matches(in: contentText, options: [], range: NSRange(location: 0, length: contentText.count)) ?? []
+        // Regular expressions for mentions and hashtags
+        let mentionPattern = "@([a-zA-Z0-9_]+)"
+        let hashtagPattern = "#([a-zA-Z0-9_]+)"
+        
+        let mentionRegex = try? NSRegularExpression(pattern: mentionPattern, options: [])
+        let hashtagRegex = try? NSRegularExpression(pattern: hashtagPattern, options: [])
+        
+        let mentionMatches = mentionRegex?.matches(in: contentText, options: [], range: NSRange(location: 0, length: contentText.count)) ?? []
+        let hashtagMatches = hashtagRegex?.matches(in: contentText, options: [], range: NSRange(location: 0, length: contentText.count)) ?? []
+        
+        // Combine and sort all matches
+        var allMatches: [(range: NSRange, type: String)] = []
+        for match in mentionMatches {
+            allMatches.append((match.range(at: 0), "mention"))
+        }
+        for match in hashtagMatches {
+            allMatches.append((match.range(at: 0), "hashtag"))
+        }
+        allMatches.sort { $0.range.location < $1.range.location }
         
         var lastEndIndex = contentText.startIndex
         
-        for match in matches {
-            // Add text before the mention
-            if let range = Range(match.range(at: 0), in: contentText) {
+        for (matchRange, matchType) in allMatches {
+            // Add text before the match
+            if let range = Range(matchRange, in: contentText) {
                 let beforeText = String(contentText[lastEndIndex..<range.lowerBound])
                 if !beforeText.isEmpty {
                     var normalStyle = AttributeContainer()
@@ -367,12 +485,20 @@ class ChatViewModel: ObservableObject {
                     processedContent.append(AttributedString(beforeText).mergingAttributes(normalStyle))
                 }
                 
-                // Add the mention with highlight
-                let mentionText = String(contentText[range])
-                var mentionStyle = AttributeContainer()
-                mentionStyle.font = .system(size: 14, weight: .semibold, design: .monospaced)
-                mentionStyle.foregroundColor = Color.orange
-                processedContent.append(AttributedString(mentionText).mergingAttributes(mentionStyle))
+                // Add the match with appropriate styling
+                let matchText = String(contentText[range])
+                var matchStyle = AttributeContainer()
+                matchStyle.font = .system(size: 14, weight: .semibold, design: .monospaced)
+                
+                if matchType == "mention" {
+                    matchStyle.foregroundColor = Color.orange
+                } else {
+                    // Hashtag
+                    matchStyle.foregroundColor = Color.blue
+                    matchStyle.underlineStyle = .single
+                }
+                
+                processedContent.append(AttributedString(matchText).mergingAttributes(matchStyle))
                 
                 lastEndIndex = range.upperBound
             }
@@ -517,8 +643,27 @@ extension ChatViewModel: BitchatDelegate {
             } else if message.sender == nickname {
                 // Our own message that was echoed back - ignore it since we already added it locally
             }
+        } else if let room = message.room {
+            // Room message
+            
+            // Auto-join room if we see a message for it
+            if !joinedRooms.contains(room) {
+                joinRoom(room)
+            }
+            
+            // Add to room messages
+            if roomMessages[room] == nil {
+                roomMessages[room] = []
+            }
+            roomMessages[room]?.append(message)
+            roomMessages[room]?.sort { $0.timestamp < $1.timestamp }
+            
+            // Update unread count if not currently viewing this room
+            if currentRoom != room {
+                unreadRoomMessages[room] = (unreadRoomMessages[room] ?? 0) + 1
+            }
         } else {
-            // Regular public message
+            // Regular public message (main chat)
             messages.append(message)
             // Sort messages by timestamp to ensure proper ordering
             messages.sort { $0.timestamp < $1.timestamp }

bitchat/Views/ContentView.swift

@@ -203,6 +203,30 @@ struct ContentView: View {
                         .foregroundColor(viewModel.isFavorite(peerID: privatePeerID) ? Color.yellow : textColor)
                 }
                 .buttonStyle(.plain)
+            } else if let currentRoom = viewModel.currentRoom {
+                // Room header
+                HStack(spacing: 4) {
+                    Text(currentRoom)
+                        .font(.system(size: 18, weight: .medium, design: .monospaced))
+                        .foregroundColor(Color.orange)
+                    
+                    Spacer()
+                    
+                    Button(action: {
+                        viewModel.switchToRoom(nil)
+                    }) {
+                        Text("main")
+                            .font(.system(size: 12, design: .monospaced))
+                            .foregroundColor(textColor)
+                            .padding(.horizontal, 8)
+                            .padding(.vertical, 2)
+                            .overlay(
+                                RoundedRectangle(cornerRadius: 4)
+                                    .stroke(textColor.opacity(0.5), lineWidth: 1)
+                            )
+                    }
+                    .buttonStyle(.plain)
+                }
             } else {
                 // Public chat header
                 HStack(spacing: 4) {
@@ -269,9 +293,15 @@ struct ContentView: View {
         ScrollViewReader { proxy in
             ScrollView {
                 LazyVStack(alignment: .leading, spacing: 2) {
-                    let messages = viewModel.selectedPrivateChatPeer != nil 
-                        ? viewModel.getPrivateChatMessages(for: viewModel.selectedPrivateChatPeer!)
-                        : viewModel.messages
+                    let messages: [BitchatMessage] = {
+                        if let privatePeer = viewModel.selectedPrivateChatPeer {
+                            return viewModel.getPrivateChatMessages(for: privatePeer)
+                        } else if let currentRoom = viewModel.currentRoom {
+                            return viewModel.getRoomMessages(currentRoom)
+                        } else {
+                            return viewModel.messages
+                        }
+                    }()
                     
                     ForEach(Array(messages.enumerated()), id: \.offset) { index, message in
                         VStack(alignment: .leading, spacing: 4) {
@@ -314,11 +344,13 @@ struct ContentView: View {
                                     
                                     Text(" ")
                                     
-                                    // Message content
-                                    // Regular text content
-                                    Text(viewModel.formatMessageContent(message, colorScheme: colorScheme))
-                                        .font(.system(size: 14, design: .monospaced))
-                                        .fontWeight(isMentioned ? .bold : .regular)
+                                    // Message content with clickable hashtags
+                                    MessageContentView(
+                                        message: message,
+                                        viewModel: viewModel,
+                                        colorScheme: colorScheme,
+                                        isMentioned: isMentioned
+                                    )
                                     
                                     Spacer()
                                 }
@@ -424,19 +456,91 @@ struct ContentView: View {
                 
                 Divider()
             
-            // People list
+            // Rooms and People list
             ScrollView {
-                VStack(alignment: .leading, spacing: 8) {
-                    if viewModel.connectedPeers.isEmpty {
-                        Text("No one connected")
-                            .font(.system(size: 14, design: .monospaced))
-                            .foregroundColor(secondaryTextColor)
-                            .padding(.horizontal)
-                    } else {
-                        let peerNicknames = viewModel.meshService.getPeerNicknames()
-                        let peerRSSI = viewModel.meshService.getPeerRSSI()
-                        let myPeerID = viewModel.meshService.myPeerID
+                VStack(alignment: .leading, spacing: 12) {
+                    // Joined Rooms section
+                    if !viewModel.joinedRooms.isEmpty {
+                        VStack(alignment: .leading, spacing: 6) {
+                            Text("ROOMS")
+                                .font(.system(size: 11, weight: .semibold, design: .monospaced))
+                                .foregroundColor(secondaryTextColor)
+                                .padding(.horizontal, 12)
+                            
+                            ForEach(Array(viewModel.joinedRooms).sorted(), id: \.self) { room in
+                                Button(action: {
+                                    viewModel.switchToRoom(room)
+                                    withAnimation(.spring()) {
+                                        showSidebar = false
+                                    }
+                                }) {
+                                    HStack {
+                                        Text(room)
+                                            .font(.system(size: 14, design: .monospaced))
+                                            .foregroundColor(viewModel.currentRoom == room ? Color.orange : textColor)
+                                        
+                                        Spacer()
+                                        
+                                        // Unread count
+                                        if let unreadCount = viewModel.unreadRoomMessages[room], unreadCount > 0 {
+                                            Text("\(unreadCount)")
+                                                .font(.system(size: 10, weight: .bold, design: .monospaced))
+                                                .foregroundColor(backgroundColor)
+                                                .padding(.horizontal, 6)
+                                                .padding(.vertical, 2)
+                                                .background(Color.orange)
+                                                .clipShape(Capsule())
+                                        }
+                                        
+                                        // Leave button
+                                        if viewModel.currentRoom == room {
+                                            Button(action: {
+                                                viewModel.leaveRoom(room)
+                                            }) {
+                                                Text("leave")
+                                                    .font(.system(size: 10, design: .monospaced))
+                                                    .foregroundColor(secondaryTextColor)
+                                                    .padding(.horizontal, 8)
+                                                    .padding(.vertical, 2)
+                                                    .overlay(
+                                                        RoundedRectangle(cornerRadius: 4)
+                                                            .stroke(secondaryTextColor.opacity(0.5), lineWidth: 1)
+                                                    )
+                                            }
+                                            .buttonStyle(.plain)
+                                        }
+                                    }
+                                    .padding(.horizontal, 12)
+                                    .padding(.vertical, 4)
+                                    .background(viewModel.currentRoom == room ? backgroundColor.opacity(0.5) : Color.clear)
+                                }
+                                .buttonStyle(.plain)
+                            }
+                        }
                         
+                        Divider()
+                            .padding(.vertical, 4)
+                    }
+                    
+                    // People section
+                    VStack(alignment: .leading, spacing: 8) {
+                        if !viewModel.connectedPeers.isEmpty {
+                            Text("PEOPLE")
+                                .font(.system(size: 11, weight: .semibold, design: .monospaced))
+                                .foregroundColor(secondaryTextColor)
+                                .padding(.horizontal, 12)
+                        }
+                        
+                        if viewModel.connectedPeers.isEmpty {
+                            Text("No one connected")
+                                .font(.system(size: 14, design: .monospaced))
+                                .foregroundColor(secondaryTextColor)
+                                .padding(.horizontal)
+                        } else {
+                            let peerNicknames = viewModel.meshService.getPeerNicknames()
+                            let peerRSSI = viewModel.meshService.getPeerRSSI()
+                            let myPeerID = viewModel.meshService.myPeerID
+                            
                         // Sort peers: favorites first, then alphabetically by nickname
                         let sortedPeers = viewModel.connectedPeers.filter { $0 != myPeerID }.sorted { peer1, peer2 in
                             let isFav1 = viewModel.isFavorite(peerID: peer1)
@@ -502,14 +606,123 @@ struct ContentView: View {
                             .padding(.horizontal)
                             .padding(.vertical, 8)
                         }
+                        }
                     }
                 }
                 .padding(.vertical, 8)
             }
             
-                Spacer()
-            }
-            .background(backgroundColor)
+            Spacer()
+        }
+        .background(backgroundColor)
         }
     }
+}
+
+// Helper view for rendering message content with clickable hashtags
+struct MessageContentView: View {
+    let message: BitchatMessage
+    let viewModel: ChatViewModel
+    let colorScheme: ColorScheme
+    let isMentioned: Bool
+    
+    var body: some View {
+        let content = message.content
+        let hashtagPattern = "#([a-zA-Z0-9_]+)"
+        let mentionPattern = "@([a-zA-Z0-9_]+)"
+        
+        let hashtagRegex = try? NSRegularExpression(pattern: hashtagPattern, options: [])
+        let mentionRegex = try? NSRegularExpression(pattern: mentionPattern, options: [])
+        
+        let hashtagMatches = hashtagRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
+        let mentionMatches = mentionRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
+        
+        // Combine all matches and sort by location
+        var allMatches: [(range: NSRange, type: String)] = []
+        for match in hashtagMatches {
+            allMatches.append((match.range(at: 0), "hashtag"))
+        }
+        for match in mentionMatches {
+            allMatches.append((match.range(at: 0), "mention"))
+        }
+        allMatches.sort { $0.range.location < $1.range.location }
+        
+        // Build the text view with clickable hashtags
+        return HStack(spacing: 0) {
+            ForEach(Array(buildTextSegments().enumerated()), id: \.offset) { _, segment in
+                if segment.type == "hashtag" {
+                    Button(action: {
+                        viewModel.joinRoom(segment.text)
+                    }) {
+                        Text(segment.text)
+                            .font(.system(size: 14, weight: .semibold, design: .monospaced))
+                            .foregroundColor(Color.blue)
+                            .underline()
+                    }
+                    .buttonStyle(.plain)
+                } else if segment.type == "mention" {
+                    Text(segment.text)
+                        .font(.system(size: 14, weight: .semibold, design: .monospaced))
+                        .foregroundColor(Color.orange)
+                } else {
+                    Text(segment.text)
+                        .font(.system(size: 14, design: .monospaced))
+                        .fontWeight(isMentioned ? .bold : .regular)
+                }
+            }
+        }
+    }
+    
+    private func buildTextSegments() -> [(text: String, type: String)] {
+        var segments: [(text: String, type: String)] = []
+        let content = message.content
+        var lastEnd = content.startIndex
+        
+        let hashtagPattern = "#([a-zA-Z0-9_]+)"
+        let mentionPattern = "@([a-zA-Z0-9_]+)"
+        
+        let hashtagRegex = try? NSRegularExpression(pattern: hashtagPattern, options: [])
+        let mentionRegex = try? NSRegularExpression(pattern: mentionPattern, options: [])
+        
+        let hashtagMatches = hashtagRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
+        let mentionMatches = mentionRegex?.matches(in: content, options: [], range: NSRange(location: 0, length: content.count)) ?? []
+        
+        // Combine all matches and sort by location
+        var allMatches: [(range: NSRange, type: String)] = []
+        for match in hashtagMatches {
+            allMatches.append((match.range(at: 0), "hashtag"))
+        }
+        for match in mentionMatches {
+            allMatches.append((match.range(at: 0), "mention"))
+        }
+        allMatches.sort { $0.range.location < $1.range.location }
+        
+        for (matchRange, matchType) in allMatches {
+            if let range = Range(matchRange, in: content) {
+                // Add text before the match
+                if lastEnd < range.lowerBound {
+                    let beforeText = String(content[lastEnd..<range.lowerBound])
+                    if !beforeText.isEmpty {
+                        segments.append((beforeText, "text"))
+                    }
+                }
+                
+                // Add the match
+                let matchText = String(content[range])
+                segments.append((matchText, matchType))
+                
+                lastEnd = range.upperBound
+            }
+        }
+        
+        // Add any remaining text
+        if lastEnd < content.endIndex {
+            let remainingText = String(content[lastEnd...])
+            if !remainingText.isEmpty {
+                segments.append((remainingText, "text"))
+            }
+        }
+        
+        return segments
+    }
 }