Refactor QR scan and share and add QRS support

ApplicationLibrary/LubyTransform/BinaryMeta.swift

@@ -0,0 +1,89 @@
+import Foundation
+
+enum BinaryMeta {
+    enum MetaError: Error {
+        case invalidBuffer
+        case invalidMeta
+    }
+
+    struct FileHeaderMeta: Codable {
+        var filename: String?
+        var contentType: String?
+    }
+
+    static func mergeDataArrays(_ arrays: [Data]) -> Data {
+        var totalLength = 0
+        for arr in arrays {
+            totalLength += 4 + arr.count
+        }
+
+        var merged = Data(capacity: totalLength)
+        for arr in arrays {
+            let length = UInt32(arr.count)
+            var bytes: [UInt8] = [
+                UInt8((length >> 24) & 0xFF),
+                UInt8((length >> 16) & 0xFF),
+                UInt8((length >> 8) & 0xFF),
+                UInt8(length & 0xFF),
+            ]
+            merged.append(contentsOf: bytes)
+            merged.append(arr)
+        }
+
+        return merged
+    }
+
+    static func splitDataArrays(_ merged: Data) throws -> [Data] {
+        var arrays: [Data] = []
+        var offset = 0
+
+        while offset < merged.count {
+            guard offset + 4 <= merged.count else {
+                throw MetaError.invalidBuffer
+            }
+
+            let length = merged.withUnsafeBytes { ptr -> Int in
+                let b0 = Int(ptr[offset]) << 24
+                let b1 = Int(ptr[offset + 1]) << 16
+                let b2 = Int(ptr[offset + 2]) << 8
+                let b3 = Int(ptr[offset + 3])
+                return b0 | b1 | b2 | b3
+            }
+            offset += 4
+
+            guard offset + length <= merged.count else {
+                throw MetaError.invalidBuffer
+            }
+
+            let arr = merged.subdata(in: offset ..< offset + length)
+            arrays.append(arr)
+            offset += length
+        }
+
+        return arrays
+    }
+
+    static func appendFileHeaderMeta(data: Data, filename: String?, contentType: String) -> Data {
+        let meta = FileHeaderMeta(filename: filename, contentType: contentType)
+        guard let metaData = try? JSONEncoder().encode(meta) else {
+            return data
+        }
+        return mergeDataArrays([metaData, data])
+    }
+
+    static func readFileHeaderMeta(buffer: Data) throws -> (data: Data, filename: String?, contentType: String) {
+        let arrays = try splitDataArrays(buffer)
+        guard arrays.count == 2 else {
+            throw MetaError.invalidBuffer
+        }
+
+        let metaData = arrays[0]
+        let data = arrays[1]
+
+        guard let meta = try? JSONDecoder().decode(FileHeaderMeta.self, from: metaData) else {
+            throw MetaError.invalidMeta
+        }
+
+        return (data, meta.filename, meta.contentType ?? "application/octet-stream")
+    }
+}

ApplicationLibrary/LubyTransform/EncodedBlock.swift

@@ -1,6 +1,7 @@
 import Foundation
 
 struct EncodedBlock {
+    static let qrsURLPrefix = "https://qrss.netlify.app/#"
     var indices: [Int]
     var data: Data
     let k: Int
@@ -80,8 +81,38 @@ struct EncodedBlock {
         toBinary().base64EncodedString()
     }
 
+    func toQRSString() -> String {
+        Self.qrsURLPrefix + toBase64()
+    }
+
+    static func fromQRSString(_ string: String) -> EncodedBlock? {
+        var content = string
+        if content.hasPrefix("http"), let hashIndex = content.firstIndex(of: "#") {
+            content = String(content[content.index(after: hashIndex)...])
+        }
+        return fromBase64(content)
+    }
+
     static func fromBase64(_ string: String) -> EncodedBlock? {
-        guard let data = Data(base64Encoded: string) else { return nil }
-        return fromBinary(data)
+        guard let data = Data(base64Encoded: string, options: .ignoreUnknownCharacters) else {
+            #if DEBUG
+                print("[EncodedBlock] Base64 decode failed for string of length \(string.count)")
+            #endif
+            return nil
+        }
+        #if DEBUG
+            print("[EncodedBlock] Base64 decoded: \(data.count) bytes")
+        #endif
+        guard let block = fromBinary(data) else {
+            #if DEBUG
+                print("[EncodedBlock] fromBinary failed")
+                if data.count >= 4 {
+                    let degree = data.withUnsafeBytes { $0.load(fromByteOffset: 0, as: UInt32.self).littleEndian }
+                    print("[EncodedBlock] degree=\(degree), expected size=\(4 + Int(degree) * 4 + 12), actual=\(data.count)")
+                }
+            #endif
+            return nil
+        }
+        return block
     }
 }

ApplicationLibrary/LubyTransform/LubyTransformDecoder.swift

@@ -1,5 +1,5 @@
-import Compression
 import Foundation
+import zlib
 
 final class LubyTransformDecoder {
     private(set) var decodedData: [Data?] = []
@@ -66,16 +66,29 @@ final class LubyTransformDecoder {
         indices.map(String.init).joined(separator: ",")
     }
 
-    private func xorData(_ a: Data, _ b: Data) -> Data {
-        var result = a
-        let count = min(a.count, b.count)
-        for i in 0 ..< count {
-            result[i] ^= b[i]
+    private func xorDataInPlace(_ dest: inout Data, _ src: Data) {
+        let count = min(dest.count, src.count)
+        dest.withUnsafeMutableBytes { destPtr in
+            src.withUnsafeBytes { srcPtr in
+                let d = destPtr.bindMemory(to: UInt8.self).baseAddress!
+                let s = srcPtr.bindMemory(to: UInt8.self).baseAddress!
+                for i in 0 ..< count {
+                    d[i] ^= s[i]
+                }
+            }
         }
-        return result
     }
 
     private func propagateDecoded(key: String, wrapper: BlockWrapper) {
+        var queue: [(key: String, wrapper: BlockWrapper)] = [(key, wrapper)]
+
+        while !queue.isEmpty {
+            let (currentKey, currentWrapper) = queue.removeFirst()
+            processBlock(key: currentKey, wrapper: currentWrapper, queue: &queue)
+        }
+    }
+
+    private func processBlock(key: String, wrapper: BlockWrapper, queue: inout [(key: String, wrapper: BlockWrapper)]) {
         var block = wrapper.block
         var indices = block.indices
         var indicesSet = Set(indices)
@@ -88,7 +101,7 @@ final class LubyTransformDecoder {
         if indices.count > 1 {
             for index in indices {
                 if let decoded = decodedData[index] {
-                    block.data = xorData(block.data, decoded)
+                    xorDataInPlace(&block.data, decoded)
                     indicesSet.remove(index)
                 }
             }
@@ -105,7 +118,7 @@ final class LubyTransformDecoder {
                 let subIndices = indices.filter { $0 != index }
                 let subkey = indicesToKey(subIndices)
                 if let subWrapper = encodedBlockKeyMap[subkey] {
-                    block.data = xorData(block.data, subWrapper.block.data)
+                    xorDataInPlace(&block.data, subWrapper.block.data)
                     for i in subWrapper.block.indices {
                         indicesSet.remove(i)
                     }
@@ -121,8 +134,8 @@ final class LubyTransformDecoder {
             // Store subkeys for future matching if still high degree
             if indicesSet.count > 1 {
                 for (index, subkey) in subkeys {
-                    let dispose = { [weak self] in
-                        self?.encodedBlockSubkeyMap[subkey]?.remove(wrapper)
+                    let dispose: () -> Void = { [weak self] in
+                        _ = self?.encodedBlockSubkeyMap[subkey]?.remove(wrapper)
                     }
                     if encodedBlockSubkeyMap[subkey] == nil {
                         encodedBlockSubkeyMap[subkey] = []
@@ -156,14 +169,14 @@ final class LubyTransformDecoder {
                 encodedBlockSubkeyMap.removeValue(forKey: newKey)
                 for superWrapper in superset {
                     var superBlock = superWrapper.block
-                    superBlock.data = xorData(superBlock.data, block.data)
+                    xorDataInPlace(&superBlock.data, block.data)
                     var superIndicesSet = Set(superBlock.indices)
                     for i in indices {
                         superIndicesSet.remove(i)
                     }
                     superBlock.indices = Array(superIndicesSet).sorted()
                     superWrapper.block = superBlock
-                    propagateDecoded(key: indicesToKey(superBlock.indices), wrapper: superWrapper)
+                    queue.append((indicesToKey(superBlock.indices), superWrapper))
                 }
             }
         }
@@ -180,7 +193,7 @@ final class LubyTransformDecoder {
                 for waiting in waitingBlocks {
                     let waitingKey = indicesToKey(waiting.block.indices)
                     encodedBlockKeyMap.removeValue(forKey: waitingKey)
-                    propagateDecoded(key: waitingKey, wrapper: waiting)
+                    queue.append((waitingKey, waiting))
                 }
             }
         }
@@ -227,25 +240,48 @@ final class LubyTransformDecoder {
     }
 
     private static func inflate(_ data: Data) -> Data? {
-        let sourceSize = data.count
-        let destinationSize = sourceSize * 10
+        var stream = z_stream()
 
-        let destinationBuffer = UnsafeMutablePointer<UInt8>.allocate(capacity: destinationSize)
-        defer { destinationBuffer.deallocate() }
-
-        let decompressedSize = data.withUnsafeBytes { sourcePtr -> Int in
-            guard let baseAddress = sourcePtr.baseAddress else { return 0 }
-            return compression_decode_buffer(
-                destinationBuffer,
-                destinationSize,
-                baseAddress.assumingMemoryBound(to: UInt8.self),
-                sourceSize,
-                nil,
-                COMPRESSION_ZLIB
-            )
+        // Use 15 for zlib format (with header/trailer) to match pako's default
+        guard inflateInit2_(
+            &stream,
+            15,
+            ZLIB_VERSION,
+            Int32(MemoryLayout<z_stream>.size)
+        ) == Z_OK else {
+            return nil
         }
+        defer { inflateEnd(&stream) }
 
-        guard decompressedSize > 0 else { return nil }
-        return Data(bytes: destinationBuffer, count: decompressedSize)
+        var destCapacity = data.count * 4
+        var dest = Data(count: destCapacity)
+
+        return data.withUnsafeBytes { srcPtr -> Data? in
+            stream.next_in = UnsafeMutablePointer(mutating: srcPtr.bindMemory(to: Bytef.self).baseAddress)
+            stream.avail_in = uInt(data.count)
+
+            while true {
+                dest.withUnsafeMutableBytes { destPtr in
+                    stream.next_out = destPtr.bindMemory(to: Bytef.self).baseAddress?.advanced(by: Int(stream.total_out))
+                    stream.avail_out = uInt(destCapacity - Int(stream.total_out))
+                }
+
+                let result = zlib.inflate(&stream, Z_NO_FLUSH)
+
+                if result == Z_STREAM_END {
+                    dest.count = Int(stream.total_out)
+                    return dest
+                }
+
+                if result != Z_OK {
+                    return nil
+                }
+
+                if stream.avail_out == 0 {
+                    destCapacity *= 2
+                    dest.count = destCapacity
+                }
+            }
+        }
     }
 }

ApplicationLibrary/LubyTransform/LubyTransformEncoder.swift

@@ -1,5 +1,5 @@
-import Compression
 import Foundation
+import zlib
 
 final class LubyTransformEncoder {
     let k: Int
@@ -8,7 +8,7 @@ final class LubyTransformEncoder {
     let bytes: Int
     private let sourceBlocks: [Data]
 
-    init(data: Data, sliceSize: Int = 500, compress: Bool = true) {
+    init(data: Data, sliceSize: Int = 512, compress: Bool = true) {
         self.sliceSize = sliceSize
 
         let compressed: Data
@@ -25,26 +25,39 @@ final class LubyTransformEncoder {
     }
 
     private static func deflateCompress(_ data: Data) -> Data? {
-        let sourceSize = data.count
-        let destinationSize = sourceSize + 1024
+        var stream = z_stream()
 
-        let destinationBuffer = UnsafeMutablePointer<UInt8>.allocate(capacity: destinationSize)
-        defer { destinationBuffer.deallocate() }
+        // Use 15 for zlib format (with header/trailer) to match pako's default
+        guard deflateInit2_(
+            &stream,
+            Z_DEFAULT_COMPRESSION,
+            Z_DEFLATED,
+            15,
+            8,
+            Z_DEFAULT_STRATEGY,
+            ZLIB_VERSION,
+            Int32(MemoryLayout<z_stream>.size)
+        ) == Z_OK else {
+            return nil
+        }
+        defer { deflateEnd(&stream) }
 
-        let compressedSize = data.withUnsafeBytes { sourcePtr -> Int in
-            guard let baseAddress = sourcePtr.baseAddress else { return 0 }
-            return compression_encode_buffer(
-                destinationBuffer,
-                destinationSize,
-                baseAddress.assumingMemoryBound(to: UInt8.self),
-                sourceSize,
-                nil,
-                COMPRESSION_ZLIB
-            )
+        let destSize = Int(deflateBound(&stream, UInt(data.count)))
+        var dest = Data(count: destSize)
+
+        let result = data.withUnsafeBytes { srcPtr -> Int32 in
+            dest.withUnsafeMutableBytes { destPtr -> Int32 in
+                stream.next_in = UnsafeMutablePointer(mutating: srcPtr.bindMemory(to: Bytef.self).baseAddress)
+                stream.avail_in = uInt(data.count)
+                stream.next_out = destPtr.bindMemory(to: Bytef.self).baseAddress
+                stream.avail_out = uInt(destSize)
+                return deflate(&stream, Z_FINISH)
+            }
         }
 
-        guard compressedSize > 0 else { return nil }
-        return Data(bytes: destinationBuffer, count: compressedSize)
+        guard result == Z_STREAM_END else { return nil }
+        dest.count = Int(stream.total_out)
+        return dest
     }
 
     private static func sliceData(_ data: Data, sliceSize: Int) -> [Data] {
@@ -94,10 +107,8 @@ final class LubyTransformEncoder {
         }
 
         let random = Double.random(in: 0 ... 1)
-        for i in 0 ..< k {
-            if random < cumulative[i] {
-                return i + 1
-            }
+        if let i = cumulative.firstIndex(where: { random < $0 }) {
+            return i + 1
         }
         return k
     }
@@ -117,4 +128,78 @@ final class LubyTransformEncoder {
             return self.createBlock(indices: indices)
         }
     }
+
+    #if DEBUG
+        static func runSelfTest() -> Bool {
+            // Test 1: Round-trip tests with various sizes
+            let testCases: [(size: Int, sliceSize: Int)] = [
+                (1, 100),
+                (100, 100),
+                (1000, 100),
+                (1031, 100),
+            ]
+
+            for (size, sliceSize) in testCases {
+                let data = Data((0 ..< size).map { UInt8($0 % 256) })
+                let encoder = LubyTransformEncoder(data: data, sliceSize: sliceSize, compress: true)
+                let decoder = LubyTransformDecoder()
+
+                var blockCount = 0
+                for block in encoder.fountain() {
+                    blockCount += 1
+                    if blockCount > encoder.k * 3 {
+                        print("LubyTransform self-test FAILED: too many blocks for size=\(size)")
+                        return false
+                    }
+                    do {
+                        if try decoder.addBlock(block) { break }
+                    } catch {
+                        print("LubyTransform self-test FAILED: \(error)")
+                        return false
+                    }
+                }
+
+                do {
+                    let decoded = try decoder.getDecoded()
+                    if decoded != data {
+                        print("LubyTransform self-test FAILED: data mismatch for size=\(size)")
+                        return false
+                    }
+                } catch {
+                    print("LubyTransform self-test FAILED: \(error)")
+                    return false
+                }
+            }
+
+            // Test 2: TypeScript compatibility (decode blocks generated by TypeScript)
+            // Test vector: 5 bytes [0xAB, 0xCD, 0xEF, 0x12, 0x34], uncompressed, sliceSize=10
+            let tsBlockBase64 = "AQAAAAAAAAABAAAABQAAALt8DL6rze8SNAAAAAAA"
+            let expectedData = Data([0xAB, 0xCD, 0xEF, 0x12, 0x34])
+
+            guard let blockData = Data(base64Encoded: tsBlockBase64),
+                  let block = EncodedBlock.fromBinary(blockData)
+            else {
+                print("LubyTransform self-test FAILED: cannot parse TypeScript block")
+                return false
+            }
+
+            let tsDecoder = LubyTransformDecoder()
+            do {
+                _ = try tsDecoder.addBlock(block)
+                let decoded = try tsDecoder.getDecoded()
+                if decoded != expectedData {
+                    print("LubyTransform self-test FAILED: TypeScript compatibility mismatch")
+                    print("Expected: \(expectedData.map { String(format: "%02X", $0) }.joined())")
+                    print("Got: \(decoded.map { String(format: "%02X", $0) }.joined())")
+                    return false
+                }
+            } catch {
+                print("LubyTransform self-test FAILED: TypeScript decode error: \(error)")
+                return false
+            }
+
+            print("LubyTransform self-test PASSED (including TypeScript compatibility)")
+            return true
+        }
+    #endif
 }

ApplicationLibrary/LubyTransform/QRSImageGenerator.swift

@@ -0,0 +1,96 @@
+import CoreGraphics
+import Foundation
+import QRCode
+
+#if canImport(UIKit)
+    import UIKit
+#elseif canImport(AppKit)
+    import AppKit
+#endif
+
+@MainActor
+final class QRSImageGenerator: ObservableObject {
+    @Published private(set) var currentImage: CGImage?
+
+    private let bufferSize: Int
+    private let foregroundColor: CGColor
+    private let backgroundColor: CGColor
+    private let imageDimension: Int
+
+    private var frames: [EncodedBlock] = []
+    private var imageBuffer: [CGImage?]
+    private var generatedUpTo: Int = -1
+    private var currentFrameIndex: Int = 0
+    private var expectedTotalFrames: Int = 0
+
+    init(
+        foregroundColor: CGColor,
+        backgroundColor: CGColor = CGColor(gray: 1.0, alpha: 1.0),
+        bufferSize: Int = 30,
+        imageDimension: Int = 512
+    ) {
+        self.foregroundColor = foregroundColor
+        self.backgroundColor = backgroundColor
+        self.bufferSize = bufferSize
+        self.imageDimension = imageDimension
+        imageBuffer = Array(repeating: nil, count: bufferSize)
+    }
+
+    func setExpectedFrames(_ count: Int) {
+        expectedTotalFrames = count
+    }
+
+    func addFrame(_ block: EncodedBlock) async {
+        let image = await generateImage(for: block)
+
+        let index = frames.count
+        frames.append(block)
+
+        let bufferIndex = index % bufferSize
+        imageBuffer[bufferIndex] = image
+        generatedUpTo = index
+
+        if index == 0 {
+            currentImage = image
+        }
+    }
+
+    func advanceFrame() {
+        guard generatedUpTo >= 0 else { return }
+
+        let totalFrames = expectedTotalFrames > 0 ? expectedTotalFrames : frames.count
+        guard totalFrames > 0 else { return }
+
+        let nextIndex = (currentFrameIndex + 1) % totalFrames
+        if nextIndex <= generatedUpTo || generatedUpTo == totalFrames - 1 {
+            currentFrameIndex = nextIndex
+        }
+
+        let bufferIndex = currentFrameIndex % bufferSize
+        currentImage = imageBuffer[bufferIndex]
+    }
+
+    func cancel() {}
+
+    private nonisolated func generateImage(for block: EncodedBlock) async -> CGImage? {
+        let content = block.toQRSString()
+        let foregroundColor = foregroundColor
+        let backgroundColor = backgroundColor
+        let dimension = imageDimension
+
+        return await Task.detached(priority: .userInitiated) {
+            do {
+                let document = try QRCode.Document(
+                    utf8String: content,
+                    errorCorrection: .low
+                )
+                document.design.foregroundColor(foregroundColor)
+                document.design.backgroundColor(backgroundColor)
+                document.design.additionalQuietZonePixels = 4
+                return try document.cgImage(dimension: dimension)
+            } catch {
+                return nil
+            }
+        }.value
+    }
+}

ApplicationLibrary/Views/Dashboard/Cards/ProfileCard.swift

@@ -78,6 +78,11 @@ public struct ProfileCard: View {
                     QRCodeSheet(profileName: profile.name, remoteURL: remoteURL)
                 }
             }
+            .sheet(isPresented: $viewModel.showQRSShare) {
+                if let profile = selectedProfile, let data = try? profile.origin.toContent().encode() {
+                    QRSSheet(profileName: profile.name, profileData: data)
+                }
+            }
         #else
             .sheet(isPresented: $viewModel.showNewProfile, onDismiss: {
                     environments.profileUpdate.send()
@@ -98,6 +103,11 @@ public struct ProfileCard: View {
                     }
                 }
             #endif
+                .sheet(isPresented: $viewModel.showQRSShare) {
+                    if let profile = selectedProfile, let data = try? profile.origin.toContent().encode() {
+                        QRSSheet(profileName: profile.name, profileData: data)
+                    }
+                }
                 .fileExporter(
                     isPresented: $viewModel.showProfileExporter,
                     document: viewModel.profileExportDocument,
@@ -250,20 +260,26 @@ public struct ProfileCard: View {
     @ViewBuilder
     private func shareMenu(for profile: ProfilePreview) -> some View {
         #if os(tvOS)
-            if profile.type == .remote {
-                Menu {
+            Menu {
+                if profile.type == .remote {
                     Button {
                         viewModel.showQRCode = true
                     } label: {
                         Label("Share URL as QR Code", systemImage: "qrcode")
                     }
-                } label: {
-                    Image(systemName: "square.and.arrow.up")
-                        .font(.system(size: 16))
                 }
-                .buttonStyle(.plain)
-                .actionButtonStyle()
+
+                Button {
+                    viewModel.showQRSShare = true
+                } label: {
+                    Label("Share as QRS Code", systemImage: "barcode")
+                }
+            } label: {
+                Image(systemName: "square.and.arrow.up")
+                    .font(.system(size: 16))
             }
+            .buttonStyle(.plain)
+            .actionButtonStyle()
         #else
             Menu {
                 Button {
@@ -297,9 +313,17 @@ public struct ProfileCard: View {
                         Label("Share URL as QR Code", systemImage: "qrcode")
                     }
                 }
+
+                Button {
+                    viewModel.showQRSShare = true
+                } label: {
+                    Label("Share as QRS Code", systemImage: "barcode")
+                }
             } label: {
                 Image(systemName: "square.and.arrow.up")
                     .font(.system(size: 16))
+                    .frame(width: 44, height: 32)
+                    .contentShape(Rectangle())
             }
             .menuIndicator(.hidden)
             .foregroundStyle(.primary)
@@ -351,10 +375,16 @@ public struct ProfileCard: View {
                 switch type {
                 case .file:
                     viewModel.profileExportDocument = try ProfileExportDocument(content: profile.origin.toContent())
-                    viewModel.showProfileExporter = true
                 case .json:
-                    viewModel.profileJSONExportDocument = ProfileJSONExportDocument(jsonContent: try profile.origin.read(), name: profile.name)
-                    viewModel.showJSONExporter = true
+                    viewModel.profileJSONExportDocument = try ProfileJSONExportDocument(jsonContent: profile.origin.read(), name: profile.name)
+                }
+                DispatchQueue.main.async {
+                    switch type {
+                    case .file:
+                        viewModel.showProfileExporter = true
+                    case .json:
+                        viewModel.showJSONExporter = true
+                    }
                 }
             } catch {
                 viewModel.alert = AlertState(error: error)
@@ -462,6 +492,7 @@ extension ProfileCard {
         @Published var showNewProfile = false
         @Published var showProfilePicker = false
         @Published var showQRCode = false
+        @Published var showQRSShare = false
         @Published var isUpdating = false
         @Published var alert: AlertState?
         @Published var profileToEdit: Profile?

ApplicationLibrary/Views/Dashboard/Cards/ProfilePickerSheet.swift

@@ -531,6 +531,7 @@ private struct ProfilePickerRow: View {
 
     @State private var isUpdating = false
     @State private var showQRCode = false
+    @State private var showQRSShare = false
     #if os(macOS)
         @State private var shareItemType: ShareItemType?
         @State private var exportItemType: ExportItemType?
@@ -569,6 +570,11 @@ private struct ProfilePickerRow: View {
                     QRCodeSheet(profileName: profile.name, remoteURL: remoteURL)
                 }
             }
+            .sheet(isPresented: $showQRSShare) {
+                if let data = try? profile.origin.toContent().encode() {
+                    QRSSheet(profileName: profile.name, profileData: data)
+                }
+            }
         }
 
         private var tvOSNormalBody: some View {
@@ -615,16 +621,24 @@ private struct ProfilePickerRow: View {
                         } label: {
                             Label("Update", systemImage: "arrow.clockwise")
                         }
+                    }
 
-                        Menu {
+                    Menu {
+                        if profile.type == .remote {
                             Button {
                                 showQRCode = true
                             } label: {
                                 Label("Share URL as QR Code", systemImage: "qrcode")
                             }
-                        } label: {
-                            Label("Share", systemImage: "square.and.arrow.up")
                         }
+
+                        Button {
+                            showQRSShare = true
+                        } label: {
+                            Label("Share as QRS Code", systemImage: "barcode")
+                        }
+                    } label: {
+                        Label("Share", systemImage: "square.and.arrow.up")
                     }
                 } label: {
                     Image(systemName: "ellipsis")
@@ -708,6 +722,11 @@ private struct ProfilePickerRow: View {
                         QRCodeSheet(profileName: profile.name, remoteURL: remoteURL)
                     }
                 }
+                .sheet(isPresented: $showQRSShare) {
+                    if let data = try? profile.origin.toContent().encode() {
+                        QRSSheet(profileName: profile.name, profileData: data)
+                    }
+                }
                 .fileExporter(
                     isPresented: $showProfileExporter,
                     document: profileExportDocument,
@@ -753,6 +772,11 @@ private struct ProfilePickerRow: View {
                         QRCodeSheet(profileName: profile.name, remoteURL: remoteURL)
                     }
                 }
+                .sheet(isPresented: $showQRSShare) {
+                    if let data = try? profile.origin.toContent().encode() {
+                        QRSSheet(profileName: profile.name, profileData: data)
+                    }
+                }
                 .fileExporter(
                     isPresented: $showProfileExporter,
                     document: profileExportDocument,
@@ -952,6 +976,12 @@ private struct ProfilePickerRow: View {
                         Label("Share URL as QR Code", systemImage: "qrcode")
                     }
                 }
+
+                Button {
+                    showQRSShare = true
+                } label: {
+                    Label("Share as QRS Code", systemImage: "barcode")
+                }
             } label: {
                 Label("Share", systemImage: "square.and.arrow.up")
             }
@@ -962,10 +992,16 @@ private struct ProfilePickerRow: View {
                 switch type {
                 case .file:
                     profileExportDocument = try ProfileExportDocument(content: profile.origin.toContent())
-                    showProfileExporter = true
                 case .json:
-                    profileJSONExportDocument = ProfileJSONExportDocument(jsonContent: try profile.origin.read(), name: profile.name)
-                    showJSONExporter = true
+                    profileJSONExportDocument = try ProfileJSONExportDocument(jsonContent: profile.origin.read(), name: profile.name)
+                }
+                DispatchQueue.main.async {
+                    switch type {
+                    case .file:
+                        showProfileExporter = true
+                    case .json:
+                        showJSONExporter = true
+                    }
                 }
             } catch {
                 alert = AlertState(error: error)
@@ -1025,7 +1061,7 @@ private struct ProfilePickerRow: View {
                     profileExportDocument = try ProfileExportDocument(content: profile.origin.toContent())
                     showProfileExporter = true
                 case .json:
-                    profileJSONExportDocument = ProfileJSONExportDocument(jsonContent: try profile.origin.read(), name: profile.name)
+                    profileJSONExportDocument = try ProfileJSONExportDocument(jsonContent: profile.origin.read(), name: profile.name)
                     showJSONExporter = true
                 }
             } catch {
@@ -1136,6 +1172,7 @@ private struct ProfilePickerRow: View {
 
         @State private var isUpdating = false
         @State private var showQRCode = false
+        @State private var showQRSShare = false
         @State private var profileExportDocument: ProfileExportDocument?
         @State private var showProfileExporter = false
         @State private var profileJSONExportDocument: ProfileJSONExportDocument?
@@ -1197,6 +1234,11 @@ private struct ProfilePickerRow: View {
                     QRCodeSheet(profileName: profile.name, remoteURL: remoteURL)
                 }
             }
+            .sheet(isPresented: $showQRSShare) {
+                if let data = try? profile.origin.toContent().encode() {
+                    QRSSheet(profileName: profile.name, profileData: data)
+                }
+            }
             .fileExporter(
                 isPresented: $showProfileExporter,
                 document: profileExportDocument,
@@ -1293,6 +1335,12 @@ private struct ProfilePickerRow: View {
                         Label("Share URL as QR Code", systemImage: "qrcode")
                     }
                 }
+
+                Button {
+                    showQRSShare = true
+                } label: {
+                    Label("Share as QRS Code", systemImage: "barcode")
+                }
             } label: {
                 Label("Share", systemImage: "square.and.arrow.up")
             }
@@ -1303,10 +1351,16 @@ private struct ProfilePickerRow: View {
                 switch type {
                 case .file:
                     profileExportDocument = try ProfileExportDocument(content: profile.origin.toContent())
-                    showProfileExporter = true
                 case .json:
-                    profileJSONExportDocument = ProfileJSONExportDocument(jsonContent: try profile.origin.read(), name: profile.name)
-                    showJSONExporter = true
+                    profileJSONExportDocument = try ProfileJSONExportDocument(jsonContent: profile.origin.read(), name: profile.name)
+                }
+                DispatchQueue.main.async {
+                    switch type {
+                    case .file:
+                        showProfileExporter = true
+                    case .json:
+                        showJSONExporter = true
+                    }
                 }
             } catch {
                 alert = AlertState(error: error)

ApplicationLibrary/Views/Profile/ImportProfileViewModel.swift

@@ -140,7 +140,7 @@
             try content.config.write(to: profileConfig, atomically: true, encoding: .utf8)
             var lastUpdated: Date?
             if content.lastUpdated > 0 {
-                lastUpdated = Date(timeIntervalSince1970: Double(content.lastUpdated))
+                lastUpdated = dateFromTimestamp(content.lastUpdated)
             }
             let uniqueProfileName = try await ProfileManager.uniqueName(content.name)
             let profile = Profile(name: uniqueProfileName, type: type, path: profileConfig.relativePath, remoteURL: content.remotePath, autoUpdate: content.autoUpdate, lastUpdated: lastUpdated)

ApplicationLibrary/Views/Profile/NewProfileMenuView.swift

@@ -231,8 +231,17 @@ public struct NewProfileMenuView: View {
 
     #if !os(tvOS)
         private func handleQRScanResult(_ result: QRScanResult) {
+            switch result {
+            case let .qrCode(string, _):
+                handleQRCodeString(string)
+            case let .qrsData(data):
+                handleQRSData(data)
+            }
+        }
+
+        private func handleQRCodeString(_ string: String) {
             var error: NSError?
-            let remoteProfile = LibboxParseRemoteProfileImportLink(result.string, &error)
+            let remoteProfile = LibboxParseRemoteProfileImportLink(string, &error)
             if let error {
                 alert = AlertState(
                     title: String(localized: "Invalid QR Code"),
@@ -249,5 +258,30 @@ public struct NewProfileMenuView: View {
             }
             importRequest = NewProfileView.ImportRequest(name: remoteProfile.name, url: remoteProfile.url)
         }
+
+        private func handleQRSData(_ data: Data) {
+            do {
+                let (actualData, _, _) = try BinaryMeta.readFileHeaderMeta(buffer: data)
+                let content = try LibboxProfileContent.from(actualData)
+                alert = AlertState(
+                    title: String(localized: "Import Profile"),
+                    message: String(localized: "Are you sure to import profile \(content.name)?"),
+                    primaryButton: .default(String(localized: "Import")) {
+                        Task {
+                            do {
+                                try await content.importProfile()
+                                environments.profileUpdate.send()
+                                dismiss()
+                            } catch {
+                                alert = AlertState(error: error)
+                            }
+                        }
+                    },
+                    secondaryButton: .cancel()
+                )
+            } catch {
+                alert = AlertState(error: error)
+            }
+        }
     #endif
 }

ApplicationLibrary/Views/Profile/ProfileView.swift

@@ -1,282 +0,0 @@
-import Foundation
-import Libbox
-import Library
-import Network
-import SwiftUI
-
-@MainActor
-public struct ProfileView: View {
-    @EnvironmentObject private var environments: ExtensionEnvironments
-    @Environment(\.importProfile) private var importProfile
-    @Environment(\.importRemoteProfile) private var importRemoteProfile
-    @StateObject private var viewModel = ProfileViewModel()
-
-    #if os(tvOS)
-        @Environment(\.devicePickerSupports) private var devicePickerSupports
-    #endif
-
-    public init() {}
-    public var body: some View {
-        VStack {
-            if viewModel.isLoading {
-                ProgressView().onAppear {
-                    viewModel.setEnvironments(environments)
-                    Task {
-                        await viewModel.doReload()
-                    }
-                }
-            } else {
-                ZStack {
-                    if let importRemoteProfileRequest = viewModel.importRemoteProfileRequest {
-                        NavigationDestinationCompat(isPresented: $viewModel.importRemoteProfilePresented) {
-                            NewProfileView(importRemoteProfileRequest)
-                        }
-                    }
-                    FormView {
-                        #if os(iOS)
-                            FormNavigationLink {
-                                NewProfileView()
-                            } label: {
-                                Text("New Profile").foregroundColor(.accentColor)
-                            }
-                            .disabled(viewModel.editMode.isEditing)
-                        #elseif os(macOS)
-                            FormNavigationLink {
-                                NewProfileView()
-                            } label: {
-                                Text("New Profile")
-                            }
-                        #elseif os(tvOS)
-                            Section {
-                                FormNavigationLink {
-                                    NewProfileView()
-                                } label: {
-                                    Text("New Profile").foregroundColor(.accentColor)
-                                }
-                                if ApplicationLibrary.inPreview || devicePickerSupports(.applicationService(name: "sing-box"), parameters: { .applicationService }) {
-                                    FormNavigationLink {
-                                        ImportProfileView()
-                                    } label: {
-                                        Text("Import Profile").foregroundColor(.accentColor)
-                                    }
-                                }
-                            }
-                        #endif
-                        if viewModel.profileList.isEmpty {
-                            Text("Empty profiles")
-                        } else {
-                            List {
-                                ForEach(viewModel.profileList, id: \.id) { profile in
-                                    Group {
-                                        #if os(iOS) || os(tvOS)
-                                            if viewModel.editMode.isEditing == true {
-                                                Text(profile.name)
-                                            } else {
-                                                ProfileItem(viewModel, profile)
-                                            }
-                                        #else
-                                            ProfileItem(viewModel, profile)
-                                        #endif
-                                    }
-                                }
-                                .onMove(perform: moveProfile)
-                                .onDelete(perform: deleteProfile)
-                            }
-                        }
-                    }
-                }
-            }
-        }
-        .disabled(viewModel.isUpdating)
-        .alert($viewModel.alert, isLoading: $viewModel.isLoading)
-        .onAppear {
-            if let profile = importProfile.wrappedValue {
-                importProfile.wrappedValue = nil
-                viewModel.createImportProfileDialog(profile)
-            }
-            if let remoteProfile = importRemoteProfile.wrappedValue {
-                importRemoteProfile.wrappedValue = nil
-                viewModel.createImportRemoteProfileDialog(remoteProfile)
-            }
-        }
-        .onChangeCompat(of: importProfile.wrappedValue) { newValue in
-            if let newValue {
-                importProfile.wrappedValue = nil
-                viewModel.createImportProfileDialog(newValue)
-            }
-        }
-        .onChangeCompat(of: importRemoteProfile.wrappedValue) { newValue in
-            if let newValue {
-                importRemoteProfile.wrappedValue = nil
-                viewModel.createImportRemoteProfileDialog(newValue)
-            }
-        }
-        .onReceive(environments.profileUpdate) { _ in
-            Task {
-                await viewModel.doReload()
-            }
-        }
-        #if os(iOS)
-        .toolbar {
-            ToolbarItem(placement: .navigationBarTrailing) {
-                EditButton().disabled(viewModel.profileList.isEmpty && !viewModel.editMode.isEditing)
-            }
-        }
-        #elseif os(tvOS)
-        .toolbar {
-            ToolbarItem(placement: .navigationBarTrailing) {
-                if viewModel.editMode == .inactive {
-                    Button(action: {
-                        viewModel.editMode = .active
-                    }, label: {
-                        Image(systemName: "square.and.pencil")
-                    })
-                    .tint(.accentColor)
-                    .disabled(viewModel.profileList.isEmpty)
-                } else {
-                    Button(action: {
-                        viewModel.editMode = .inactive
-                    }, label: {
-                        Image(systemName: "checkmark.square.fill")
-                    })
-                    .tint(.accentColor)
-                }
-            }
-        }
-        #endif
-        #if os(iOS) || os(tvOS)
-        .environment(\.editMode, $viewModel.editMode)
-        #endif
-    }
-
-    private func moveProfile(from source: IndexSet, to destination: Int) {
-        viewModel.moveProfile(from: source, to: destination)
-    }
-
-    private func deleteProfile(where profileIndex: IndexSet) {
-        viewModel.deleteProfile(where: profileIndex)
-    }
-
-    @MainActor
-    public struct ProfileItem: View {
-        @EnvironmentObject private var environments: ExtensionEnvironments
-        @ObservedObject private var viewModel: ProfileViewModel
-        @State private var profile: ProfilePreview
-        @State private var shareLinkPresented = false
-
-        public init(_ viewModel: ProfileViewModel, _ profile: ProfilePreview) {
-            self.viewModel = viewModel
-            _profile = State(initialValue: profile)
-        }
-
-        public var body: some View {
-            #if os(iOS) || os(macOS)
-                if #available(iOS 16.0, macOS 13.0, *) {
-                    draggableBody.draggable(profile.origin)
-                } else {
-                    draggableBody
-                }
-            #else
-                draggableBody
-            #endif
-        }
-
-        private var draggableBody: some View {
-            Group {
-                #if !os(macOS)
-                    FormNavigationLink {
-                        EditProfileView().environmentObject(profile.origin)
-                    } label: {
-                        Text(profile.name)
-                    }
-                    .sheet(isPresented: $shareLinkPresented) {
-                        QRCodeSheet(profileName: profile.name, remoteURL: profile.remoteURL!)
-                    }
-                    .contextMenu {
-                        ProfileShareButton($viewModel.alert, profile.origin) {
-                            Label("Share", systemImage: "square.and.arrow.up.fill")
-                        }
-
-                        if profile.type == .remote {
-                            Button {
-                                shareLinkPresented = true
-                            } label: {
-                                Label("Share URL as QR Code", systemImage: "qrcode")
-                            }
-                            Button {
-                                viewModel.isUpdating = true
-                                Task {
-                                    await viewModel.updateProfile(profile.origin)
-                                    profile = ProfilePreview(profile.origin)
-                                }
-                            } label: {
-                                Label("Update", systemImage: "arrow.clockwise")
-                            }
-                        }
-                        Button(role: .destructive) {
-                            Task {
-                                await viewModel.deleteProfile(profile.origin)
-                            }
-                        } label: {
-                            Label("Delete", systemImage: "trash.fill")
-                        }
-                    }
-                #else
-                    FormNavigationLink {
-                        EditProfileView().environmentObject(profile.origin)
-                    } label: {
-                        HStack {
-                            VStack(alignment: .leading) {
-                                Text(profile.name)
-                                if profile.type == .remote {
-                                    Spacer(minLength: 4)
-                                    Text("Last Updated: \(profile.origin.lastUpdated!.relativeFormat)").font(.caption)
-                                }
-                            }
-                            HStack {
-                                if profile.type == .remote {
-                                    Button {
-                                        viewModel.isUpdating = true
-                                        Task {
-                                            await viewModel.updateProfile(profile.origin)
-                                            profile = ProfilePreview(profile.origin)
-                                        }
-                                    } label: {
-                                        Image(systemName: "arrow.clockwise")
-                                    }
-                                    .padding(.leading, 4)
-
-                                    Button {
-                                        shareLinkPresented = true
-                                    } label: {
-                                        Image(systemName: "qrcode")
-                                    }
-                                    .padding(.leading, 4)
-                                    .popover(isPresented: $shareLinkPresented, arrowEdge: .bottom) {
-                                        QRCodeContentView(profileName: profile.name, remoteURL: profile.remoteURL!)
-                                    }
-                                }
-                                ProfileShareButton($viewModel.alert, profile.origin) {
-                                    Image(systemName: "square.and.arrow.up.fill")
-                                }
-                                .padding(.leading, 4)
-                                Button {
-                                    Task {
-                                        await viewModel.deleteProfile(profile.origin)
-                                    }
-                                } label: {
-                                    Image(systemName: "trash.fill")
-                                }
-                                .padding([.leading, .trailing], 4)
-                            }
-                            .buttonStyle(.plain)
-                            .frame(maxWidth: .infinity, alignment: .trailing)
-                        }
-                        .padding(.vertical, 8)
-                        .frame(maxWidth: .infinity, alignment: .leading)
-                    }
-                #endif
-            }
-        }
-    }
-}

ApplicationLibrary/Views/Profile/ProfileViewModel.swift

@@ -1,136 +0,0 @@
-import Foundation
-import Libbox
-import Library
-import SwiftUI
-
-@MainActor
-public class ProfileViewModel: BaseViewModel {
-    @Published public var importRemoteProfileRequest: NewProfileView.ImportRequest?
-    @Published public var importRemoteProfilePresented = false
-    @Published public var isUpdating = false
-    @Published public var profileList: [ProfilePreview] = []
-
-    #if os(iOS) || os(tvOS)
-        @Published public var editMode = EditMode.inactive
-    #endif
-
-    private weak var environments: ExtensionEnvironments?
-
-    override public init() {
-        super.init()
-        isLoading = true
-    }
-
-    public func setEnvironments(_ environments: ExtensionEnvironments) {
-        self.environments = environments
-    }
-
-    public func createImportProfileDialog(_ profile: LibboxProfileContent) {
-        alert = AlertState(
-            title: String(localized: "Import Profile"),
-            message: String(localized: "Are you sure to import profile \(profile.name)?"),
-            primaryButton: .default(String(localized: "Import")) {
-                Task {
-                    do {
-                        try await profile.importProfile()
-                    } catch {
-                        self.alert = AlertState(error: error)
-                        return
-                    }
-                    await self.doReload()
-                    self.environments?.emptyProfiles = self.profileList.isEmpty
-                }
-            },
-            secondaryButton: .cancel()
-        )
-    }
-
-    public func createImportRemoteProfileDialog(_ newValue: LibboxImportRemoteProfile) {
-        importRemoteProfileRequest = .init(name: newValue.name, url: newValue.url)
-        alert = AlertState(
-            title: String(localized: "Import Remote Profile"),
-            message: String(localized: "Are you sure to import remote profile \(newValue.name)? You will connect to \(newValue.host) to download the configuration."),
-            primaryButton: .default(String(localized: "Import")) {
-                self.importRemoteProfilePresented = true
-            },
-            secondaryButton: .cancel()
-        )
-    }
-
-    public func doReload() async {
-        defer {
-            isLoading = false
-        }
-        if ApplicationLibrary.inPreview {
-            profileList = [
-                ProfilePreview(Profile(id: 0, name: "profile local", type: .local, path: "")),
-                ProfilePreview(Profile(id: 1, name: "profile remote", type: .remote, path: "", lastUpdated: Date(timeIntervalSince1970: 0))),
-            ]
-        } else {
-            do {
-                profileList = try await ProfileManager.list().map { ProfilePreview($0) }
-            } catch {
-                alert = AlertState(error: error)
-                return
-            }
-        }
-        environments?.emptyProfiles = profileList.isEmpty
-    }
-
-    public func updateProfile(_ profile: Profile) async {
-        await updateProfileBackground(profile)
-        isUpdating = false
-    }
-
-    private nonisolated func updateProfileBackground(_ profile: Profile) async {
-        do {
-            _ = try await profile.updateRemoteProfile()
-        } catch {
-            await MainActor.run {
-                alert = AlertState(error: error)
-            }
-        }
-    }
-
-    public func deleteProfile(_ profile: Profile) async {
-        do {
-            _ = try await ProfileManager.delete(profile)
-            environments?.profileUpdate.send()
-            environments?.emptyProfiles = profileList.isEmpty
-        } catch {
-            alert = AlertState(error: error)
-        }
-    }
-
-    public func moveProfile(from source: IndexSet, to destination: Int) {
-        profileList.move(fromOffsets: source, toOffset: destination)
-        for (index, profile) in profileList.enumerated() {
-            profileList[index].order = UInt32(index)
-            profile.origin.order = UInt32(index)
-        }
-        Task {
-            do {
-                try await ProfileManager.update(profileList.map(\.origin))
-                environments?.profileUpdate.send()
-            } catch {
-                alert = AlertState(error: error)
-            }
-        }
-    }
-
-    public func deleteProfile(where profileIndex: IndexSet) {
-        let profileToDelete = profileIndex.map { index in
-            profileList[index].origin
-        }
-        profileList.remove(atOffsets: profileIndex)
-        Task {
-            do {
-                _ = try await ProfileManager.delete(profileToDelete)
-                environments?.emptyProfiles = profileList.isEmpty
-                environments?.profileUpdate.send()
-            } catch {
-                alert = AlertState(error: error)
-            }
-        }
-    }
-}

ApplicationLibrary/Views/Profile/QRCodeSheet.swift

@@ -31,7 +31,8 @@ public struct QRCodeContentView: View {
                 content: LibboxGenerateRemoteProfileImportLink(profileName, remoteURL),
                 errorCorrection: .low,
                 foregroundColor: .labelColor,
-                backgroundColor: CGColor(gray: 1.0, alpha: 0.0)
+                backgroundColor: CGColor(gray: 1.0, alpha: 0.0),
+                additionalQuietZonePixels: 4
             )
             #if os(macOS)
             .frame(minWidth: 300, minHeight: 300)
@@ -73,3 +74,64 @@ public struct QRCodeSheet: View {
         #endif
     }
 }
+
+@MainActor
+public struct URLQRCodeContentView: View {
+    private let url: String
+
+    public init(url: String) {
+        self.url = url
+    }
+
+    public var body: some View {
+        VStack {
+            Spacer()
+            QRCodeViewUI(
+                content: url,
+                errorCorrection: .low,
+                foregroundColor: .labelColor,
+                backgroundColor: CGColor(gray: 1.0, alpha: 0.0),
+                additionalQuietZonePixels: 4
+            )
+            #if os(macOS)
+            .frame(minWidth: 300, minHeight: 300)
+            #endif
+            Spacer()
+        }
+        .padding()
+    }
+}
+
+@MainActor
+public struct URLQRCodeSheet: View {
+    private let url: String
+    private let title: String
+
+    public init(url: String, title: String) {
+        self.url = url
+        self.title = title
+    }
+
+    public var body: some View {
+        #if os(macOS)
+            NavigationSheet(title: title) {
+                URLQRCodeContentView(url: url)
+            }
+            .frame(minWidth: 400, minHeight: 400)
+        #elseif os(iOS) || os(tvOS)
+            if #available(iOS 16.0, tvOS 17.0, *) {
+                NavigationStackCompat {
+                    URLQRCodeContentView(url: url)
+                        .navigationTitle(title)
+                }
+                .presentationDetents([.medium])
+                .presentationDragIndicator(.visible)
+            } else {
+                NavigationStackCompat {
+                    URLQRCodeContentView(url: url)
+                        .navigationTitle(title)
+                }
+            }
+        #endif
+    }
+}

ApplicationLibrary/Views/Profile/QRSDisplayView.swift

@@ -2,162 +2,167 @@ import Foundation
 import QRCode
 import SwiftUI
 
-private extension CGColor {
-    static var labelColor: CGColor {
-        #if canImport(UIKit)
-            UIColor.label.cgColor
-        #elseif canImport(AppKit)
-            NSColor.labelColor.cgColor
-        #endif
-    }
-}
-
 @MainActor
 public struct QRSDisplayView: View {
+    private static let recoveryFactor = 1.3
+
+    @Environment(\.dismiss) private var dismiss
+    @Environment(\.openURL) private var openURL
     private let data: Data
+    private let filename: String?
 
-    @State private var encoder: LubyTransformEncoder?
-    @State private var currentBlock: EncodedBlock?
-    @State private var frameCount = 0
-    @State private var isPlaying = true
+    @State private var generator: QRSImageGenerator?
     @State private var fps: Double = 10
-    @State private var sliceSize: Int = 500
-    @State private var timer: Timer?
+    @State private var sliceSize: Double = 500
+    @State private var generationTask: Task<Void, Never>?
+    #if os(tvOS)
+        @State private var showQRSInfoQRCode = false
+    #endif
 
-    public init(data: Data) {
+    public init(data: Data, filename: String? = nil) {
         self.data = data
+        self.filename = filename
     }
 
     public var body: some View {
         VStack(spacing: 16) {
-            if let block = currentBlock {
-                QRCodeViewUI(
-                    content: block.toBase64(),
-                    errorCorrection: .low,
-                    foregroundColor: .labelColor,
-                    backgroundColor: CGColor(gray: 1.0, alpha: 0.0)
-                )
-                .aspectRatio(1, contentMode: .fit)
-                #if os(macOS)
-                    .frame(minWidth: 280, minHeight: 280)
-                #else
-                    .frame(maxWidth: 300, maxHeight: 300)
-                #endif
-            } else {
-                ProgressView()
-                    .frame(width: 280, height: 280)
-            }
-
-            VStack(spacing: 4) {
-                Text("Frame: \(frameCount)")
-                    .font(.caption)
-                if let encoder {
-                    Text("Source blocks: \(encoder.k)")
-                        .font(.caption)
-                    Text("Data size: \(encoder.bytes) bytes")
-                        .font(.caption)
-                }
-            }
-            .foregroundStyle(.secondary)
-
-            VStack(spacing: 12) {
-                HStack {
-                    Button {
-                        isPlaying.toggle()
-                    } label: {
-                        Image(systemName: isPlaying ? "pause.fill" : "play.fill")
+            TimelineView(.periodic(from: .now, by: 1.0 / fps)) { context in
+                Group {
+                    if let image = generator?.currentImage {
+                        Image(decorative: image, scale: 1.0)
+                            .resizable()
+                            .interpolation(.none)
+                            .aspectRatio(1, contentMode: .fit)
+                    } else {
+                        ProgressView()
+                            .frame(width: 280, height: 280)
                     }
-                    #if os(macOS)
-                    .buttonStyle(.bordered)
-                    #endif
-
-                    Spacer()
-
-                    Text(String(localized: "Ideal FPS"))
-                        .font(.caption)
-
-                    Slider(value: $fps, in: 1 ... 30, step: 1)
-                        .frame(maxWidth: 120)
-
-                    Text("\(Int(fps))")
-                        .font(.caption)
-                        .frame(width: 24, alignment: .trailing)
                 }
+                .onChange(of: context.date) { _ in
+                    generator?.advanceFrame()
+                }
+            }
+
+            VStack(spacing: 8) {
+                HStack {
+                    Text(String(localized: "FPS"))
+                    Spacer()
+                    Text(verbatim: "\(Int(fps))")
+                        .foregroundStyle(.secondary)
+                }
+
+                Slider(value: $fps, in: 1 ... 60, step: 1)
 
                 HStack {
                     Text(String(localized: "Slice Size"))
-                        .font(.caption)
-
-                    Picker("", selection: $sliceSize) {
-                        Text("200").tag(200)
-                        Text("500").tag(500)
-                        Text("1000").tag(1000)
-                    }
-                    .pickerStyle(.segmented)
-                    .frame(maxWidth: 200)
+                    Spacer()
+                    Text("\(Int(sliceSize))")
+                        .foregroundStyle(.secondary)
                 }
+
+                Slider(value: $sliceSize, in: 100 ... 1500, step: 100)
+            }
+            .padding(.horizontal)
+
+            HStack(spacing: 12) {
+                Button {
+                    #if os(tvOS)
+                        showQRSInfoQRCode = true
+                    #else
+                        openURL(URL(string: "https://github.com/qifi-dev/qrs")!)
+                    #endif
+                } label: {
+                    HStack(spacing: 4) {
+                        Image(systemName: "info.circle")
+                        Text(String(localized: "What is QRS"))
+                    }
+                    .frame(maxWidth: .infinity)
+                }
+                .buttonStyle(.bordered)
+
+                Button {
+                    dismiss()
+                } label: {
+                    HStack(spacing: 4) {
+                        Image(systemName: "xmark")
+                        Text(String(localized: "Close"))
+                    }
+                    .frame(maxWidth: .infinity)
+                }
+                .buttonStyle(.borderedProminent)
             }
             .padding(.horizontal)
         }
-        .padding()
+        #if os(macOS)
+            .padding()
+        #else
+            .padding([.horizontal, .bottom])
+        #endif
         .onAppear {
-            setupEncoder()
-            startAnimation()
+            setupGenerator()
         }
         .onDisappear {
-            stopAnimation()
-        }
-        .onChange(of: fps) { _ in
-            if isPlaying {
-                restartTimer()
-            }
-        }
-        .onChange(of: isPlaying) { playing in
-            if playing {
-                startAnimation()
-            } else {
-                stopAnimation()
-            }
+            generator?.cancel()
+            generationTask?.cancel()
         }
         .onChange(of: sliceSize) { _ in
-            setupEncoder()
-            frameCount = 0
+            setupGenerator()
         }
+        #if os(tvOS)
+        .sheet(isPresented: $showQRSInfoQRCode) {
+            URLQRCodeSheet(url: "https://github.com/qifi-dev/qrs", title: String(localized: "What is QRS"))
+        }
+        #endif
     }
 
-    private func setupEncoder() {
-        encoder = LubyTransformEncoder(data: data, sliceSize: sliceSize, compress: true)
-    }
+    private func setupGenerator() {
+        generator?.cancel()
+        generationTask?.cancel()
 
-    private func startAnimation() {
-        nextFrame()
-        restartTimer()
-    }
+        let newGenerator = QRSImageGenerator(
+            foregroundColor: CGColor(gray: 0.0, alpha: 1.0),
+            bufferSize: 30
+        )
+        generator = newGenerator
 
-    private func restartTimer() {
-        timer?.invalidate()
-        timer = Timer.scheduledTimer(withTimeInterval: 1.0 / fps, repeats: true) { _ in
-            Task { @MainActor in
-                nextFrame()
+        generationTask = Task {
+            let (encoder, requiredFrames) = await createEncoder()
+            if Task.isCancelled { return }
+
+            newGenerator.setExpectedFrames(requiredFrames)
+
+            let fountain = encoder.fountain()
+            for _ in 0 ..< requiredFrames {
+                if Task.isCancelled { return }
+                guard let block = fountain.next() else { continue }
+                await newGenerator.addFrame(block)
             }
         }
     }
 
-    private func stopAnimation() {
-        timer?.invalidate()
-        timer = nil
+    private nonisolated func createEncoder() async -> (LubyTransformEncoder, Int) {
+        await Task.detached(priority: .userInitiated) { [data, filename, sliceSize] in
+            let wrappedData = BinaryMeta.appendFileHeaderMeta(
+                data: data,
+                filename: filename,
+                contentType: "application/octet-stream"
+            )
+            let sliceSizeInt = Int(sliceSize)
+            let encoder = LubyTransformEncoder(data: wrappedData, sliceSize: sliceSizeInt, compress: true)
+            let requiredFrames = Self.calculateRequiredFrames(dataSize: wrappedData.count, sliceSize: sliceSizeInt)
+            return (encoder, requiredFrames)
+        }.value
     }
 
-    private func nextFrame() {
-        guard let encoder else { return }
-        currentBlock = encoder.fountain().next()
-        frameCount += 1
+    private nonisolated static func calculateRequiredFrames(dataSize: Int, sliceSize: Int) -> Int {
+        let k = (dataSize + sliceSize - 1) / sliceSize
+        if k == 0 { return 1 }
+        return max(Int(Double(k) * recoveryFactor), k + 5)
     }
 }
 
 @MainActor
 public struct QRSSheet: View {
-    @Environment(\.dismiss) private var dismiss
     private let profileName: String
     private let profileData: Data
 
@@ -168,26 +173,25 @@ public struct QRSSheet: View {
 
     public var body: some View {
         #if os(macOS)
-            NavigationSheet(title: String(localized: "Share as QRS")) {
-                VStack {
-                    QRSDisplayView(data: profileData)
-                    Text("Ask the receiver to scan continuously until complete.")
-                        .font(.caption)
-                        .foregroundStyle(.secondary)
-                        .padding(.bottom)
-                }
-            }
-            .frame(minWidth: 400, minHeight: 520)
+            QRSDisplayView(data: profileData, filename: "\(profileName).bpf")
+                .frame(minWidth: 400, minHeight: 520)
         #elseif os(iOS) || os(tvOS)
-            NavigationSheet(title: String(localized: "Share as QRS"), size: .large) {
-                VStack {
-                    QRSDisplayView(data: profileData)
-                    Text("Ask the receiver to scan continuously until complete.")
-                        .font(.caption)
-                        .foregroundStyle(.secondary)
-                        .padding(.bottom)
-                }
-            }
+            QRSDisplayView(data: profileData, filename: "\(profileName).bpf")
+                .modifier(LargeSheetModifier())
         #endif
     }
 }
+
+#if os(iOS) || os(tvOS)
+    private struct LargeSheetModifier: ViewModifier {
+        func body(content: Content) -> some View {
+            if #available(iOS 16.0, tvOS 17.0, *) {
+                content
+                    .presentationDetents([.large])
+                    .presentationDragIndicator(.visible)
+            } else {
+                content
+            }
+        }
+    }
+#endif

ApplicationLibrary/Views/Scanner/QRSScannerController+iOS.swift

@@ -1,249 +0,0 @@
-#if os(iOS)
-
-    import AVFoundation
-    import SwiftUI
-    import UIKit
-
-    @MainActor
-    final class QRSScannerController: NSObject, ObservableObject {
-        private var captureSession: AVCaptureSession?
-        private var previewLayer: AVCaptureVideoPreviewLayer?
-        private var metadataOutput: AVCaptureMetadataOutput?
-
-        @Published var decoder = LubyTransformDecoder()
-        @Published var lastError: String?
-        @Published var isComplete = false
-        @Published var progress: Double = 0
-        @Published var framesScanned = 0
-        @Published var availableCameras: [AVCaptureDevice] = []
-        @Published var selectedCamera: AVCaptureDevice?
-
-        private var seenBlockHashes = Set<Data>()
-
-        let previewView = UIView()
-        var onComplete: ((Data) -> Void)?
-
-        override init() {
-            super.init()
-            previewView.backgroundColor = .black
-            refreshCameraList()
-        }
-
-        func refreshCameraList() {
-            var deviceTypes: [AVCaptureDevice.DeviceType] = [
-                .builtInWideAngleCamera,
-                .builtInUltraWideCamera,
-                .builtInTelephotoCamera,
-            ]
-            if #available(iOS 17.0, *) {
-                deviceTypes.append(.external)
-            }
-            let discoverySession = AVCaptureDevice.DiscoverySession(
-                deviceTypes: deviceTypes,
-                mediaType: .video,
-                position: .unspecified
-            )
-            availableCameras = discoverySession.devices
-            if selectedCamera == nil {
-                selectedCamera = availableCameras.first
-            }
-        }
-
-        func selectCamera(_ camera: AVCaptureDevice) {
-            guard camera.uniqueID != selectedCamera?.uniqueID else { return }
-            selectedCamera = camera
-
-            if captureSession != nil {
-                stopScanning()
-                captureSession = nil
-                previewLayer?.removeFromSuperlayer()
-                previewLayer = nil
-                startScanning()
-            }
-        }
-
-        func reset() {
-            decoder = LubyTransformDecoder()
-            seenBlockHashes.removeAll()
-            lastError = nil
-            isComplete = false
-            progress = 0
-            framesScanned = 0
-        }
-
-        func startScanning() {
-            guard captureSession == nil else {
-                if captureSession?.isRunning == false {
-                    DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                        self?.captureSession?.startRunning()
-                    }
-                }
-                return
-            }
-
-            switch AVCaptureDevice.authorizationStatus(for: .video) {
-            case .authorized:
-                setupCaptureSession()
-            case .notDetermined:
-                AVCaptureDevice.requestAccess(for: .video) { [weak self] granted in
-                    DispatchQueue.main.async {
-                        if granted {
-                            self?.setupCaptureSession()
-                        }
-                    }
-                }
-            default:
-                break
-            }
-        }
-
-        func stopScanning() {
-            DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                self?.captureSession?.stopRunning()
-            }
-        }
-
-        private func setupCaptureSession() {
-            let session = AVCaptureSession()
-
-            guard let videoCaptureDevice = selectedCamera ?? AVCaptureDevice.default(for: .video) else {
-                return
-            }
-
-            let videoInput: AVCaptureDeviceInput
-            do {
-                videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)
-            } catch {
-                return
-            }
-
-            guard session.canAddInput(videoInput) else { return }
-            session.addInput(videoInput)
-
-            let metadataOutput = AVCaptureMetadataOutput()
-            guard session.canAddOutput(metadataOutput) else { return }
-            session.addOutput(metadataOutput)
-            metadataOutput.setMetadataObjectsDelegate(self, queue: .main)
-            metadataOutput.metadataObjectTypes = [.qr]
-
-            self.metadataOutput = metadataOutput
-            captureSession = session
-
-            let previewLayer = AVCaptureVideoPreviewLayer(session: session)
-            previewLayer.videoGravity = .resizeAspectFill
-            previewLayer.frame = previewView.bounds
-            previewView.layer.addSublayer(previewLayer)
-            self.previewLayer = previewLayer
-
-            DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                self?.captureSession?.startRunning()
-            }
-        }
-
-        func updatePreviewFrame(_ frame: CGRect) {
-            previewLayer?.frame = frame
-        }
-
-        private func processQRContent(_ content: String) {
-            guard !isComplete else { return }
-
-            guard let block = EncodedBlock.fromBase64(content) else {
-                return
-            }
-
-            let hash = block.toBinary()
-            guard !seenBlockHashes.contains(hash) else { return }
-            seenBlockHashes.insert(hash)
-
-            framesScanned += 1
-
-            do {
-                let complete = try decoder.addBlock(block)
-                progress = decoder.progress
-
-                if complete {
-                    isComplete = true
-                    stopScanning()
-                    AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
-
-                    if let data = try? decoder.getDecoded() {
-                        onComplete?(data)
-                    }
-                }
-            } catch {
-                lastError = error.localizedDescription
-            }
-        }
-    }
-
-    extension QRSScannerController: AVCaptureMetadataOutputObjectsDelegate {
-        nonisolated func metadataOutput(
-            _ output: AVCaptureMetadataOutput,
-            didOutput metadataObjects: [AVMetadataObject],
-            from connection: AVCaptureConnection
-        ) {
-            Task { @MainActor in
-                for metadataObject in metadataObjects {
-                    guard let readable = metadataObject as? AVMetadataMachineReadableCodeObject,
-                          let content = readable.stringValue
-                    else { continue }
-                    processQRContent(content)
-                }
-            }
-        }
-    }
-
-    struct QRSScannerControllerView: UIViewControllerRepresentable {
-        let controller: QRSScannerController
-
-        func makeUIViewController(context: Context) -> UIViewController {
-            let viewController = QRSScannerViewController(controller: controller)
-            return viewController
-        }
-
-        func updateUIViewController(_ uiViewController: UIViewController, context: Context) {}
-    }
-
-    private class QRSScannerViewController: UIViewController {
-        let controller: QRSScannerController
-
-        init(controller: QRSScannerController) {
-            self.controller = controller
-            super.init(nibName: nil, bundle: nil)
-        }
-
-        @available(*, unavailable)
-        required init?(coder: NSCoder) {
-            fatalError("init(coder:) has not been implemented")
-        }
-
-        override func viewDidLoad() {
-            super.viewDidLoad()
-            view.backgroundColor = .black
-            view.addSubview(controller.previewView)
-            controller.previewView.translatesAutoresizingMaskIntoConstraints = false
-            NSLayoutConstraint.activate([
-                controller.previewView.topAnchor.constraint(equalTo: view.topAnchor),
-                controller.previewView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
-                controller.previewView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-                controller.previewView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-            ])
-        }
-
-        override func viewDidLayoutSubviews() {
-            super.viewDidLayoutSubviews()
-            controller.updatePreviewFrame(view.bounds)
-        }
-
-        override func viewWillAppear(_ animated: Bool) {
-            super.viewWillAppear(animated)
-            controller.startScanning()
-        }
-
-        override func viewWillDisappear(_ animated: Bool) {
-            super.viewWillDisappear(animated)
-            controller.stopScanning()
-        }
-    }
-
-#endif

ApplicationLibrary/Views/Scanner/QRSScannerController+macOS.swift

@@ -1,261 +0,0 @@
-#if os(macOS)
-
-    import AppKit
-    import AVFoundation
-    import SwiftUI
-    import Vision
-
-    @MainActor
-    final class QRSScannerController: NSObject, ObservableObject {
-        private var captureSession: AVCaptureSession?
-        private var previewLayer: AVCaptureVideoPreviewLayer?
-        private var videoOutput: AVCaptureVideoDataOutput?
-
-        @Published var decoder = LubyTransformDecoder()
-        @Published var lastError: String?
-        @Published var isComplete = false
-        @Published var progress: Double = 0
-        @Published var framesScanned = 0
-        @Published var availableCameras: [AVCaptureDevice] = []
-        @Published var selectedCamera: AVCaptureDevice?
-
-        private var seenBlockHashes = Set<Data>()
-
-        let previewView = NSView()
-        var onComplete: ((Data) -> Void)?
-
-        override init() {
-            super.init()
-            previewView.wantsLayer = true
-            previewView.layer?.backgroundColor = NSColor.black.cgColor
-            refreshCameraList()
-        }
-
-        func refreshCameraList() {
-            let discoverySession = AVCaptureDevice.DiscoverySession(
-                deviceTypes: [.builtInWideAngleCamera, .externalUnknown],
-                mediaType: .video,
-                position: .unspecified
-            )
-            availableCameras = discoverySession.devices
-            if selectedCamera == nil {
-                selectedCamera = availableCameras.first
-            }
-        }
-
-        func selectCamera(_ camera: AVCaptureDevice) {
-            guard camera.uniqueID != selectedCamera?.uniqueID else { return }
-            selectedCamera = camera
-
-            if captureSession != nil {
-                stopScanning()
-                captureSession = nil
-                previewLayer?.removeFromSuperlayer()
-                previewLayer = nil
-                startScanning()
-            }
-        }
-
-        func reset() {
-            decoder = LubyTransformDecoder()
-            seenBlockHashes.removeAll()
-            lastError = nil
-            isComplete = false
-            progress = 0
-            framesScanned = 0
-        }
-
-        func startScanning() {
-            guard captureSession == nil else {
-                if captureSession?.isRunning == false {
-                    DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                        self?.captureSession?.startRunning()
-                    }
-                }
-                return
-            }
-
-            switch AVCaptureDevice.authorizationStatus(for: .video) {
-            case .authorized:
-                setupCaptureSession()
-            case .notDetermined:
-                AVCaptureDevice.requestAccess(for: .video) { [weak self] granted in
-                    DispatchQueue.main.async {
-                        if granted {
-                            self?.setupCaptureSession()
-                        }
-                    }
-                }
-            default:
-                break
-            }
-        }
-
-        func stopScanning() {
-            DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                self?.captureSession?.stopRunning()
-            }
-        }
-
-        private func setupCaptureSession() {
-            let session = AVCaptureSession()
-
-            guard let videoCaptureDevice = selectedCamera ?? AVCaptureDevice.default(for: .video) else {
-                return
-            }
-
-            let videoInput: AVCaptureDeviceInput
-            do {
-                videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)
-            } catch {
-                return
-            }
-
-            guard session.canAddInput(videoInput) else { return }
-            session.addInput(videoInput)
-
-            let videoOutput = AVCaptureVideoDataOutput()
-            videoOutput.videoSettings = [
-                kCVPixelBufferPixelFormatTypeKey as String: kCVPixelFormatType_32BGRA,
-            ]
-            videoOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "QRSScannerQueue"))
-
-            guard session.canAddOutput(videoOutput) else { return }
-            session.addOutput(videoOutput)
-
-            self.videoOutput = videoOutput
-            captureSession = session
-
-            let previewLayer = AVCaptureVideoPreviewLayer(session: session)
-            previewLayer.videoGravity = .resizeAspectFill
-            previewLayer.frame = previewView.bounds
-            previewView.layer?.addSublayer(previewLayer)
-            self.previewLayer = previewLayer
-
-            DispatchQueue.global(qos: .userInteractive).async { [weak self] in
-                self?.captureSession?.startRunning()
-            }
-        }
-
-        func updatePreviewFrame(_ frame: CGRect) {
-            previewLayer?.frame = frame
-        }
-
-        private func processQRContent(_ content: String) {
-            guard !isComplete else { return }
-
-            guard let block = EncodedBlock.fromBase64(content) else {
-                return
-            }
-
-            let hash = block.toBinary()
-            guard !seenBlockHashes.contains(hash) else { return }
-            seenBlockHashes.insert(hash)
-
-            DispatchQueue.main.async { [weak self] in
-                guard let self else { return }
-                framesScanned += 1
-
-                do {
-                    let complete = try decoder.addBlock(block)
-                    progress = decoder.progress
-
-                    if complete {
-                        isComplete = true
-                        stopScanning()
-                        NSSound.beep()
-
-                        if let data = try? decoder.getDecoded() {
-                            onComplete?(data)
-                        }
-                    }
-                } catch {
-                    lastError = error.localizedDescription
-                }
-            }
-        }
-    }
-
-    extension QRSScannerController: AVCaptureVideoDataOutputSampleBufferDelegate {
-        nonisolated func captureOutput(
-            _ output: AVCaptureOutput,
-            didOutput sampleBuffer: CMSampleBuffer,
-            from connection: AVCaptureConnection
-        ) {
-            guard let pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return }
-
-            let request = VNDetectBarcodesRequest { [weak self] request, _ in
-                guard let results = request.results as? [VNBarcodeObservation] else { return }
-
-                for result in results {
-                    if result.symbology == .qr, let payload = result.payloadStringValue {
-                        self?.processQRContent(payload)
-                    }
-                }
-            }
-            request.symbologies = [.qr]
-
-            let handler = VNImageRequestHandler(cvPixelBuffer: pixelBuffer, options: [:])
-            try? handler.perform([request])
-        }
-    }
-
-    struct QRSScannerControllerView: NSViewControllerRepresentable {
-        let controller: QRSScannerController
-
-        func makeNSViewController(context: Context) -> NSViewController {
-            let viewController = QRSScannerViewController(controller: controller)
-            return viewController
-        }
-
-        func updateNSViewController(_ nsViewController: NSViewController, context: Context) {}
-    }
-
-    private class QRSScannerViewController: NSViewController {
-        let controller: QRSScannerController
-
-        init(controller: QRSScannerController) {
-            self.controller = controller
-            super.init(nibName: nil, bundle: nil)
-        }
-
-        @available(*, unavailable)
-        required init?(coder: NSCoder) {
-            fatalError("init(coder:) has not been implemented")
-        }
-
-        override func loadView() {
-            view = NSView()
-            view.wantsLayer = true
-            view.layer?.backgroundColor = NSColor.black.cgColor
-        }
-
-        override func viewDidLoad() {
-            super.viewDidLoad()
-            view.addSubview(controller.previewView)
-            controller.previewView.translatesAutoresizingMaskIntoConstraints = false
-            NSLayoutConstraint.activate([
-                controller.previewView.topAnchor.constraint(equalTo: view.topAnchor),
-                controller.previewView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
-                controller.previewView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
-                controller.previewView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
-            ])
-        }
-
-        override func viewDidLayout() {
-            super.viewDidLayout()
-            controller.updatePreviewFrame(view.bounds)
-        }
-
-        override func viewWillAppear() {
-            super.viewWillAppear()
-            controller.startScanning()
-        }
-
-        override func viewWillDisappear() {
-            super.viewWillDisappear()
-            controller.stopScanning()
-        }
-    }
-
-#endif

ApplicationLibrary/Views/Scanner/QRSScannerView.swift

@@ -1,169 +0,0 @@
-#if !os(tvOS)
-
-    import AVFoundation
-    import Library
-    import SwiftUI
-
-    @MainActor
-    public struct QRSScannerView: View {
-        @Environment(\.dismiss) private var dismiss
-        @State private var alert: AlertState?
-        @StateObject private var controller = QRSScannerController()
-
-        private let onComplete: (Data) -> Void
-
-        public init(onComplete: @escaping (Data) -> Void) {
-            self.onComplete = onComplete
-        }
-
-        public var body: some View {
-            #if os(iOS)
-                iOSBody
-            #elseif os(macOS)
-                macOSBody
-            #endif
-        }
-
-        #if os(iOS)
-            private var iOSBody: some View {
-                NavigationStackCompat {
-                    ZStack {
-                        QRSScannerControllerView(controller: controller)
-                            .ignoresSafeArea()
-
-                        VStack {
-                            Spacer()
-                            progressOverlay
-                                .padding()
-                        }
-                    }
-                    .navigationTitle("Scan QRS")
-                    .navigationBarTitleDisplayMode(.inline)
-                    .toolbar {
-                        ToolbarItem(placement: .cancellationAction) {
-                            Button("Cancel") { dismiss() }
-                        }
-                        ToolbarItem(placement: .primaryAction) {
-                            Menu {
-                                Button {
-                                    controller.reset()
-                                    controller.startScanning()
-                                } label: {
-                                    Label("Reset", systemImage: "arrow.counterclockwise")
-                                }
-
-                                if controller.availableCameras.count > 1 {
-                                    Menu("Camera") {
-                                        ForEach(controller.availableCameras, id: \.uniqueID) { camera in
-                                            Button {
-                                                controller.selectCamera(camera)
-                                            } label: {
-                                                if camera.uniqueID == controller.selectedCamera?.uniqueID {
-                                                    Label(camera.localizedName, systemImage: "checkmark")
-                                                } else {
-                                                    Text(camera.localizedName)
-                                                }
-                                            }
-                                        }
-                                    }
-                                }
-                            } label: {
-                                Image(systemName: "ellipsis.circle")
-                            }
-                        }
-                    }
-                }
-                .alert($alert)
-                .onAppear {
-                    controller.onComplete = { data in
-                        dismiss()
-                        onComplete(data)
-                    }
-                }
-            }
-        #endif
-
-        #if os(macOS)
-            private var macOSBody: some View {
-                VStack(spacing: 0) {
-                    ZStack {
-                        QRSScannerControllerView(controller: controller)
-                            .frame(minWidth: 400, minHeight: 300)
-
-                        VStack {
-                            Spacer()
-                            progressOverlay
-                                .padding()
-                        }
-                    }
-
-                    Divider()
-
-                    HStack {
-                        if controller.availableCameras.count > 1 {
-                            Picker("Camera", selection: Binding(
-                                get: { controller.selectedCamera },
-                                set: { camera in
-                                    if let camera {
-                                        controller.selectCamera(camera)
-                                    }
-                                }
-                            )) {
-                                ForEach(controller.availableCameras, id: \.uniqueID) { camera in
-                                    Text(camera.localizedName).tag(camera as AVCaptureDevice?)
-                                }
-                            }
-                            .frame(maxWidth: 200)
-                        }
-
-                        Button("Reset") {
-                            controller.reset()
-                            controller.startScanning()
-                        }
-
-                        Spacer()
-
-                        Button("Cancel") { dismiss() }
-                            .keyboardShortcut(.cancelAction)
-                    }
-                    .padding()
-                }
-                .alert($alert)
-                .onAppear {
-                    controller.onComplete = { data in
-                        dismiss()
-                        onComplete(data)
-                    }
-                }
-            }
-        #endif
-
-        private var progressOverlay: some View {
-            VStack(spacing: 8) {
-                ProgressView(value: controller.progress)
-                    .progressViewStyle(.linear)
-                    .frame(maxWidth: 200)
-
-                Text("Decoded: \(Int(controller.progress * 100))%")
-                    .font(.headline)
-
-                if controller.decoder.k > 0 {
-                    Text("\(controller.decoder.decodedCount)/\(controller.decoder.k) blocks")
-                        .font(.caption)
-                }
-
-                Text("Frames scanned: \(controller.framesScanned)")
-                    .font(.caption)
-
-                if let error = controller.lastError {
-                    Text(error)
-                        .font(.caption)
-                        .foregroundStyle(.red)
-                }
-            }
-            .padding()
-            .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 12))
-        }
-    }
-
-#endif

ApplicationLibrary/Views/Scanner/QRScanner.swift

@@ -6,6 +6,7 @@ public enum QRScanError: Error, LocalizedError {
     case permissionDenied
     case scanFailed(Error)
     case invalidCode
+    case qrsDecodeFailed
 
     public var errorDescription: String? {
         switch self {
@@ -17,16 +18,22 @@ public enum QRScanError: Error, LocalizedError {
             return error.localizedDescription
         case .invalidCode:
             return String(localized: "Invalid QR code")
+        case .qrsDecodeFailed:
+            return String(localized: "Failed to decode QRS data")
         }
     }
 }
 
-public struct QRScanResult: Sendable {
-    public let string: String
-    public let type: AVMetadataObject.ObjectType
+public enum QRScanResult: Sendable {
+    case qrCode(string: String, type: AVMetadataObject.ObjectType)
+    case qrsData(Data)
 
-    public init(string: String, type: AVMetadataObject.ObjectType) {
-        self.string = string
-        self.type = type
+    public var string: String? {
+        switch self {
+        case let .qrCode(string, _):
+            return string
+        case .qrsData:
+            return nil
+        }
     }
 }

ApplicationLibrary/Views/Scanner/QRScannerController+iOS.swift

@@ -14,6 +14,13 @@
         @Published var availableCameras: [AVCaptureDevice] = []
         @Published var selectedCamera: AVCaptureDevice?
 
+        @Published var qrsMode = false
+        @Published var decoder: LubyTransformDecoder?
+        @Published var progress: Double = 0
+        @Published var framesScanned = 0
+        private var seenBlockIds = Set<String>()
+        private let decodingQueue = DispatchQueue(label: "QRSDecoding", qos: .userInitiated)
+
         let previewView = UIView()
         var onScan: ((Result<QRScanResult, QRScanError>) -> Void)?
 
@@ -95,6 +102,11 @@
 
         func reset() {
             didFinishScanning = false
+            qrsMode = false
+            decoder = nil
+            progress = 0
+            framesScanned = 0
+            seenBlockIds.removeAll()
         }
 
         private func setupCaptureSession() {
@@ -129,7 +141,7 @@
             metadataOutput.metadataObjectTypes = [.qr]
 
             self.metadataOutput = metadataOutput
-            self.captureSession = session
+            captureSession = session
 
             let previewLayer = AVCaptureVideoPreviewLayer(session: session)
             previewLayer.videoGravity = .resizeAspectFill
@@ -149,24 +161,79 @@
 
     extension QRScannerController: AVCaptureMetadataOutputObjectsDelegate {
         nonisolated func metadataOutput(
-            _ output: AVCaptureMetadataOutput,
+            _: AVCaptureMetadataOutput,
             didOutput metadataObjects: [AVMetadataObject],
-            from connection: AVCaptureConnection
+            from _: AVCaptureConnection
         ) {
             Task { @MainActor in
-                guard !didFinishScanning,
-                      let metadataObject = metadataObjects.first,
-                      let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject,
-                      let stringValue = readableObject.stringValue
-                else {
-                    return
-                }
+                guard !didFinishScanning else { return }
 
+                for metadataObject in metadataObjects {
+                    guard let readableObject = metadataObject as? AVMetadataMachineReadableCodeObject,
+                          let stringValue = readableObject.stringValue
+                    else { continue }
+
+                    processScannedContent(stringValue, type: readableObject.type)
+                }
+            }
+        }
+
+        private func processScannedContent(_ content: String, type: AVMetadataObject.ObjectType) {
+            if let block = EncodedBlock.fromQRSString(content) {
+                processQRSBlock(block)
+            } else if !qrsMode {
                 didFinishScanning = true
                 AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
+                onScan?(.success(.qrCode(string: content, type: type)))
+            }
+        }
 
-                let result = QRScanResult(string: stringValue, type: readableObject.type)
-                onScan?(.success(result))
+        private func processQRSBlock(_ block: EncodedBlock) {
+            if let currentChecksum = decoder?.meta?.checksum,
+               block.checksum != currentChecksum
+            {
+                decoder = LubyTransformDecoder()
+                seenBlockIds.removeAll()
+                progress = 0
+                framesScanned = 0
+            }
+
+            if !qrsMode {
+                qrsMode = true
+                decoder = LubyTransformDecoder()
+            }
+
+            let blockId = "\(block.checksum):\(block.indices.sorted().map(String.init).joined(separator: ","))"
+            guard !seenBlockIds.contains(blockId) else { return }
+            seenBlockIds.insert(blockId)
+
+            framesScanned += 1
+
+            guard let decoder else { return }
+            decodingQueue.async { [weak self] in
+                do {
+                    let complete = try decoder.addBlock(block)
+                    let currentProgress = decoder.progress
+
+                    DispatchQueue.main.async {
+                        guard let self, !self.didFinishScanning else { return }
+                        self.progress = currentProgress
+
+                        if complete {
+                            self.didFinishScanning = true
+                            self.stopScanning()
+                            AudioServicesPlaySystemSound(SystemSoundID(kSystemSoundID_Vibrate))
+
+                            if let data = try? decoder.getDecoded() {
+                                self.onScan?(.success(.qrsData(data)))
+                            } else {
+                                self.onScan?(.failure(.qrsDecodeFailed))
+                            }
+                        }
+                    }
+                } catch {
+                    // Checksum mismatch is handled above, ignore other errors
+                }
             }
         }
     }
@@ -174,12 +241,12 @@
     struct QRScannerControllerView: UIViewControllerRepresentable {
         let controller: QRScannerController
 
-        func makeUIViewController(context: Context) -> UIViewController {
+        func makeUIViewController(context _: Context) -> UIViewController {
             let viewController = QRScannerViewController(controller: controller)
             return viewController
         }
 
-        func updateUIViewController(_ uiViewController: UIViewController, context: Context) {}
+        func updateUIViewController(_: UIViewController, context _: Context) {}
     }
 
     private class QRScannerViewController: UIViewController {
@@ -191,7 +258,7 @@
         }
 
         @available(*, unavailable)
-        required init?(coder: NSCoder) {
+        required init?(coder _: NSCoder) {
             fatalError("init(coder:) has not been implemented")
         }
 

ApplicationLibrary/Views/Scanner/QRScannerController+macOS.swift

@@ -15,6 +15,13 @@
         @Published var availableCameras: [AVCaptureDevice] = []
         @Published var selectedCamera: AVCaptureDevice?
 
+        @Published var qrsMode = false
+        @Published var decoder: LubyTransformDecoder?
+        @Published var progress: Double = 0
+        @Published var framesScanned = 0
+        private var seenBlockIds = Set<String>()
+        private let decodingQueue = DispatchQueue(label: "QRSDecoding", qos: .userInitiated)
+
         let previewView = NSView()
         var onScan: ((Result<QRScanResult, QRScanError>) -> Void)?
 
@@ -89,6 +96,11 @@
 
         func reset() {
             didFinishScanning = false
+            qrsMode = false
+            decoder = nil
+            progress = 0
+            framesScanned = 0
+            seenBlockIds.removeAll()
         }
 
         private func setupCaptureSession() {
@@ -126,7 +138,7 @@
             session.addOutput(videoOutput)
 
             self.videoOutput = videoOutput
-            self.captureSession = session
+            captureSession = session
 
             let previewLayer = AVCaptureVideoPreviewLayer(session: session)
             previewLayer.videoGravity = .resizeAspectFill
@@ -143,23 +155,75 @@
             previewLayer?.frame = frame
         }
 
-        private func processQRCode(_ payloadString: String) {
-            guard !didFinishScanning else { return }
-            didFinishScanning = true
-
+        private func processScannedContent(_ content: String) {
             DispatchQueue.main.async { [weak self] in
-                NSSound.beep()
-                let result = QRScanResult(string: payloadString, type: .qr)
-                self?.onScan?(.success(result))
+                guard let self, !didFinishScanning else { return }
+
+                if let block = EncodedBlock.fromQRSString(content) {
+                    processQRSBlock(block)
+                } else if !qrsMode {
+                    didFinishScanning = true
+                    NSSound.beep()
+                    onScan?(.success(.qrCode(string: content, type: .qr)))
+                }
+            }
+        }
+
+        private func processQRSBlock(_ block: EncodedBlock) {
+            if let currentChecksum = decoder?.meta?.checksum,
+               block.checksum != currentChecksum
+            {
+                decoder = LubyTransformDecoder()
+                seenBlockIds.removeAll()
+                progress = 0
+                framesScanned = 0
+            }
+
+            if !qrsMode {
+                qrsMode = true
+                decoder = LubyTransformDecoder()
+            }
+
+            let blockId = "\(block.checksum):\(block.indices.sorted().map(String.init).joined(separator: ","))"
+            guard !seenBlockIds.contains(blockId) else { return }
+            seenBlockIds.insert(blockId)
+
+            framesScanned += 1
+
+            guard let decoder else { return }
+            decodingQueue.async { [weak self] in
+                do {
+                    let complete = try decoder.addBlock(block)
+                    let currentProgress = decoder.progress
+
+                    DispatchQueue.main.async {
+                        guard let self, !self.didFinishScanning else { return }
+                        self.progress = currentProgress
+
+                        if complete {
+                            self.didFinishScanning = true
+                            self.stopScanning()
+                            NSSound.beep()
+
+                            if let data = try? decoder.getDecoded() {
+                                self.onScan?(.success(.qrsData(data)))
+                            } else {
+                                self.onScan?(.failure(.qrsDecodeFailed))
+                            }
+                        }
+                    }
+                } catch {
+                    // Checksum mismatch is handled above, ignore other errors
+                }
             }
         }
     }
 
     extension QRScannerController: AVCaptureVideoDataOutputSampleBufferDelegate {
         nonisolated func captureOutput(
-            _ output: AVCaptureOutput,
+            _: AVCaptureOutput,
             didOutput sampleBuffer: CMSampleBuffer,
-            from connection: AVCaptureConnection
+            from _: AVCaptureConnection
         ) {
             guard let pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer) else { return }
 
@@ -168,8 +232,7 @@
 
                 for result in results {
                     if result.symbology == .qr, let payload = result.payloadStringValue {
-                        self?.processQRCode(payload)
-                        return
+                        self?.processScannedContent(payload)
                     }
                 }
             }
@@ -183,12 +246,12 @@
     struct QRScannerControllerView: NSViewControllerRepresentable {
         let controller: QRScannerController
 
-        func makeNSViewController(context: Context) -> NSViewController {
+        func makeNSViewController(context _: Context) -> NSViewController {
             let viewController = QRScannerViewController(controller: controller)
             return viewController
         }
 
-        func updateNSViewController(_ nsViewController: NSViewController, context: Context) {}
+        func updateNSViewController(_: NSViewController, context _: Context) {}
     }
 
     private class QRScannerViewController: NSViewController {
@@ -200,7 +263,7 @@
         }
 
         @available(*, unavailable)
-        required init?(coder: NSCoder) {
+        required init?(coder _: NSCoder) {
             fatalError("init(coder:) has not been implemented")
         }
 

ApplicationLibrary/Views/Scanner/QRScannerView.swift

@@ -27,36 +27,42 @@
         #if os(iOS)
             private var iOSBody: some View {
                 NavigationStackCompat {
-                    QRScannerControllerView(controller: controller)
-                        .ignoresSafeArea()
-                        .navigationTitle("Scan QR Code")
-                        .navigationBarTitleDisplayMode(.inline)
-                        .toolbar {
-                            ToolbarItem(placement: .cancellationAction) {
-                                Button("Cancel") { dismiss() }
-                            }
-                            ToolbarItem(placement: .primaryAction) {
-                                Menu {
-                                    if controller.availableCameras.count > 1 {
-                                        Menu("Camera") {
-                                            ForEach(controller.availableCameras, id: \.uniqueID) { camera in
-                                                Button {
-                                                    controller.selectCamera(camera)
-                                                } label: {
-                                                    if camera.uniqueID == controller.selectedCamera?.uniqueID {
-                                                        Label(camera.localizedName, systemImage: "checkmark")
-                                                    } else {
-                                                        Text(camera.localizedName)
-                                                    }
+                    ZStack {
+                        QRScannerControllerView(controller: controller)
+                            .ignoresSafeArea()
+
+                        if controller.qrsMode {
+                            qrsProgressOverlay
+                        }
+                    }
+                    .navigationTitle("Scan QR Code")
+                    .navigationBarTitleDisplayMode(.inline)
+                    .toolbar {
+                        ToolbarItem(placement: .cancellationAction) {
+                            Button("Cancel") { dismiss() }
+                        }
+                        ToolbarItem(placement: .primaryAction) {
+                            Menu {
+                                if controller.availableCameras.count > 1 {
+                                    Menu("Camera") {
+                                        ForEach(controller.availableCameras, id: \.uniqueID) { camera in
+                                            Button {
+                                                controller.selectCamera(camera)
+                                            } label: {
+                                                if camera.uniqueID == controller.selectedCamera?.uniqueID {
+                                                    Label(camera.localizedName, systemImage: "checkmark")
+                                                } else {
+                                                    Text(camera.localizedName)
                                                 }
                                             }
                                         }
                                     }
-                                } label: {
-                                    Image(systemName: "ellipsis.circle")
                                 }
+                            } label: {
+                                Image(systemName: "ellipsis.circle")
                             }
                         }
+                    }
                 }
                 .alert($alert)
                 .onAppear {
@@ -68,8 +74,14 @@
         #if os(macOS)
             private var macOSBody: some View {
                 VStack(spacing: 0) {
-                    QRScannerControllerView(controller: controller)
-                        .frame(minWidth: 400, minHeight: 300)
+                    ZStack {
+                        QRScannerControllerView(controller: controller)
+
+                        if controller.qrsMode {
+                            qrsProgressOverlay
+                        }
+                    }
+                    .frame(minWidth: 400, minHeight: 300)
 
                     Divider()
 
@@ -102,11 +114,29 @@
             }
         #endif
 
+        private var qrsProgressOverlay: some View {
+            ZStack {
+                Color.black.opacity(0.5)
+                    .ignoresSafeArea()
+
+                let k = controller.decoder?.k ?? 0
+                let framesScanned = controller.framesScanned
+                let scanProgress = k > 0 ? min(1.0, Double(framesScanned) / Double(k) / 1.2) : 0
+
+                CircularProgressView(
+                    progress: scanProgress,
+                    total: k
+                )
+            }
+        }
+
         private func handleScanResult(_ result: Result<QRScanResult, QRScanError>) {
             switch result {
             case let .success(scanResult):
                 dismiss()
-                onScan(scanResult)
+                Task { @MainActor in
+                    onScan(scanResult)
+                }
             case let .failure(error):
                 switch error {
                 case .permissionDenied:
@@ -124,4 +154,38 @@
         }
     }
 
+    private struct CircularProgressView: View {
+        let progress: Double
+        let total: Int
+
+        private let size: CGFloat = 96
+        private let lineWidth: CGFloat = 8
+
+        var body: some View {
+            ZStack {
+                Circle()
+                    .stroke(Color.white.opacity(0.3), lineWidth: lineWidth)
+                    .frame(width: size, height: size)
+
+                Circle()
+                    .trim(from: 0, to: progress)
+                    .stroke(Color.white, style: StrokeStyle(lineWidth: lineWidth, lineCap: .round))
+                    .frame(width: size, height: size)
+                    .rotationEffect(.degrees(-90))
+                    .animation(.easeInOut(duration: 0.2), value: progress)
+
+                if total > 0 {
+                    Text("\(min(99, Int(progress * 100)))%")
+                        .font(.system(size: 20, weight: .semibold))
+                        .foregroundStyle(.white)
+                }
+
+                Text("QRS")
+                    .font(.system(size: 32, weight: .bold))
+                    .foregroundStyle(.white)
+                    .offset(y: -size / 2 - 40)
+            }
+        }
+    }
+
 #endif

ApplicationLibrary/Views/Setting/OnDemandRulesView.swift

@@ -76,24 +76,24 @@ public struct OnDemandRulesView: View {
             .environment(\.editMode, $editMode)
         #endif
         #if !os(tvOS)
-            .platformSheet(isPresented: $isAddingRule) {
-                OnDemandRuleEditView(rule: OnDemandRule(), isNew: true) { newRule in
-                    rules.append(newRule)
+        .platformSheet(isPresented: $isAddingRule) {
+            OnDemandRuleEditView(rule: OnDemandRule(), isNew: true) { newRule in
+                rules.append(newRule)
+                Task {
+                    await saveRules()
+                }
+            }
+        }
+        .platformSheet(item: $editingRule) { rule in
+            OnDemandRuleEditView(rule: rule, isNew: false) { updatedRule in
+                if let index = rules.firstIndex(where: { $0.id == updatedRule.id }) {
+                    rules[index] = updatedRule
                     Task {
                         await saveRules()
                     }
                 }
             }
-            .platformSheet(item: $editingRule) { rule in
-                OnDemandRuleEditView(rule: rule, isNew: false) { updatedRule in
-                    if let index = rules.firstIndex(where: { $0.id == updatedRule.id }) {
-                        rules[index] = updatedRule
-                        Task {
-                            await saveRules()
-                        }
-                    }
-                }
-            }
+        }
         #endif
     }
 
@@ -160,7 +160,7 @@ public struct OnDemandRulesView: View {
                         Image(systemName: "plus.circle.fill")
                     }
                     #if os(macOS)
-                        .buttonStyle(.plain)
+                    .buttonStyle(.plain)
                     #endif
                 #endif
             }
@@ -210,9 +210,9 @@ public struct OnDemandRulesView: View {
                 .contentShape(Rectangle())
             }
             #if os(macOS)
-                .buttonStyle(.plain)
+            .buttonStyle(.plain)
             #elseif os(iOS)
-                .foregroundStyle(.primary)
+            .foregroundStyle(.primary)
             #endif
         #endif
     }
@@ -362,36 +362,36 @@ private struct OnDemandRuleEditView: View {
             .navigationBarTitleDisplayMode(.inline)
         #endif
         #if !os(tvOS)
-            .toolbar {
-                ToolbarItem(placement: .cancellationAction) {
-                    Button("Cancel") {
-                        dismiss()
-                    }
-                }
-                ToolbarItem(placement: .confirmationAction) {
-                    Button(isNew ? "Create" : "Save") {
-                        onSave(rule)
-                        dismiss()
-                    }
-                    .disabled(!isProbeURLValid)
+        .toolbar {
+            ToolbarItem(placement: .cancellationAction) {
+                Button("Cancel") {
+                    dismiss()
                 }
             }
+            ToolbarItem(placement: .confirmationAction) {
+                Button(isNew ? "Create" : "Save") {
+                    onSave(rule)
+                    dismiss()
+                }
+                .disabled(!isProbeURLValid)
+            }
+        }
         #endif
         #if os(macOS)
-            .formStyle(.grouped)
+        .formStyle(.grouped)
         #endif
-            .platformSheet(isPresented: $isAddingConnectionRule, size: .small) {
-                EvaluateConnectionRuleEditView(rule: EvaluateConnectionRule()) { newRule in
-                    rule.connectionRules.append(newRule)
-                }
+        .platformSheet(isPresented: $isAddingConnectionRule, size: .small) {
+            EvaluateConnectionRuleEditView(rule: EvaluateConnectionRule()) { newRule in
+                rule.connectionRules.append(newRule)
             }
-            .platformSheet(item: $editingConnectionRule, size: .small) { connRule in
-                EvaluateConnectionRuleEditView(rule: connRule) { updatedRule in
-                    if let index = rule.connectionRules.firstIndex(where: { $0.id == updatedRule.id }) {
-                        rule.connectionRules[index] = updatedRule
-                    }
+        }
+        .platformSheet(item: $editingConnectionRule, size: .small) { connRule in
+            EvaluateConnectionRuleEditView(rule: connRule) { updatedRule in
+                if let index = rule.connectionRules.firstIndex(where: { $0.id == updatedRule.id }) {
+                    rule.connectionRules[index] = updatedRule
                 }
             }
+        }
     }
 
     private var actionSection: some View {

Library/Database/Profile+Transferable.swift

@@ -16,13 +16,21 @@ public extension Profile {
             content.autoUpdate = autoUpdate
             content.autoUpdateInterval = autoUpdateInterval
             if let lastUpdated {
-                content.lastUpdated = Int64(lastUpdated.timeIntervalSince1970)
+                content.lastUpdated = Int64(lastUpdated.timeIntervalSince1970 * 1000)
             }
         }
         return content
     }
 }
 
+public func dateFromTimestamp(_ timestamp: Int64) -> Date {
+    if timestamp > 100_000_000_000 {
+        return Date(timeIntervalSince1970: Double(timestamp) / 1000)
+    } else {
+        return Date(timeIntervalSince1970: Double(timestamp))
+    }
+}
+
 @available(iOS 16.0, macOS 13.0, *)
 extension Profile: Transferable {
     public static var transferRepresentation: some TransferRepresentation {
@@ -51,7 +59,7 @@ public extension LibboxProfileContent {
         try config.write(to: profileConfig, atomically: true, encoding: .utf8)
         var lastUpdatedAt: Date?
         if lastUpdated > 0 {
-            lastUpdatedAt = Date(timeIntervalSince1970: Double(lastUpdated))
+            lastUpdatedAt = dateFromTimestamp(lastUpdated)
         }
         let uniqueProfileName = try await ProfileManager.uniqueName(name)
         let profile = Profile(name: uniqueProfileName, type: ProfileType(rawValue: Int(type))!, path: profileConfig.relativePath, remoteURL: remotePath, autoUpdate: autoUpdate, autoUpdateInterval: autoUpdateInterval, lastUpdated: lastUpdatedAt)

Localizable.xcstrings

@@ -43,6 +43,9 @@
           }
         }
       }
+    },
+    "%lld%%" : {
+
     },
     "↑ %@" : {
       "shouldTranslate" : false
@@ -1049,6 +1052,16 @@
         }
       }
     },
+    "Failed to decode QRS data" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "解码 QRS 数据失败"
+          }
+        }
+      }
+    },
     "false" : {
       "localizations" : {
         "zh-Hans" : {
@@ -1089,6 +1102,9 @@
         }
       }
     },
+    "FPS" : {
+      "shouldTranslate" : false
+    },
     "From Outbound" : {
       "localizations" : {
         "zh-Hans" : {
@@ -1430,6 +1446,7 @@
       }
     },
     "Last Updated: %@" : {
+      "extractionState" : "stale",
       "localizations" : {
         "zh-Hans" : {
           "stringUnit" : {
@@ -1889,6 +1906,9 @@
         }
       }
     },
+    "QRS" : {
+      "shouldTranslate" : false
+    },
     "Quit" : {
       "localizations" : {
         "zh-Hans" : {
@@ -2003,6 +2023,26 @@
         }
       }
     },
+    "Save Content JSON" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "保存内容 JSON"
+          }
+        }
+      }
+    },
+    "Save File" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "保存文件"
+          }
+        }
+      }
+    },
     "Scan QR Code" : {
       "localizations" : {
         "zh-Hans" : {
@@ -2113,6 +2153,16 @@
         }
       }
     },
+    "Share as QRS Code" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "通过 QRS 码分享"
+          }
+        }
+      }
+    },
     "Share Content JSON File" : {
       "localizations" : {
         "zh-Hans" : {
@@ -2166,6 +2216,16 @@
     "sing-box" : {
       "shouldTranslate" : false
     },
+    "Slice Size" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "分片大小"
+          }
+        }
+      }
+    },
     "Sort By" : {
       "localizations" : {
         "zh-Hans" : {
@@ -2542,6 +2602,16 @@
         }
       }
     },
+    "What is QRS" : {
+      "localizations" : {
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "什么是 QRS"
+          }
+        }
+      }
+    },
     "When action is 'Evaluate Connection', these rules determine whether to connect based on the destination host." : {
       "localizations" : {
         "zh-Hans" : {