Implements #745, #746, #747 - Initial media uploading flows

- room composer contextual menu for selecting source
- coordinator for presenting the different sources
- system picker handling and URL passback
- file preview after selection
- feature flag

ElementX/Resources/Localizations/en.lproj/Untranslated.strings

@@ -24,3 +24,11 @@
 "soft_logout_clear_data_submit" = "Clear all data";
 "soft_logout_clear_data_dialog_title" = "Clear data";
 "soft_logout_clear_data_dialog_content" = "Clear all data currently stored on this device?\nSign in again to access your account data and messages.";
+
+// MARK: - Media upload
+
+"media_upload_camera_picker" = "Camera";
+
+"media_upload_photo_and_video_picker" = "Photo & Video Library";
+
+"media_upload_document_picker" = "Document";

ElementX/Sources/Application/AppSettings.swift

@@ -28,6 +28,7 @@ final class AppSettings: ObservableObject {
         case pusherProfileTag
         case shouldCollapseRoomStateEvents
         case showStartChatFlow
+        case mediaUploadingFlowEnabled
     }
     
     private static var suiteName: String = InfoPlistReader.main.appGroupIdentifier
@@ -162,4 +163,9 @@ final class AppSettings: ObservableObject {
     
     @UserSetting(key: UserDefaultsKeys.showStartChatFlow.rawValue, defaultValue: false, persistIn: store)
     var startChatFlowFeatureFlag
+    
+    // MARK: Media Uploading
+    
+    @UserSetting(key: UserDefaultsKeys.mediaUploadingFlowEnabled.rawValue, defaultValue: false, persistIn: nil)
+    var mediaUploadingFlowEnabled
 }

ElementX/Sources/Generated/Strings+Untranslated.swift

@@ -28,6 +28,12 @@ public enum UntranslatedL10n {
   public static func analyticsOptInTitle(_ p1: Any) -> String {
     return UntranslatedL10n.tr("Untranslated", "analytics_opt_in_title", String(describing: p1))
   }
+  /// Camera
+  public static var mediaUploadCameraPicker: String { return UntranslatedL10n.tr("Untranslated", "media_upload_camera_picker") }
+  /// Document
+  public static var mediaUploadDocumentPicker: String { return UntranslatedL10n.tr("Untranslated", "media_upload_document_picker") }
+  /// Photo & Video Library
+  public static var mediaUploadPhotoAndVideoPicker: String { return UntranslatedL10n.tr("Untranslated", "media_upload_photo_and_video_picker") }
   /// Clear all data currently stored on this device?
   /// Sign in again to access your account data and messages.
   public static var softLogoutClearDataDialogContent: String { return UntranslatedL10n.tr("Untranslated", "soft_logout_clear_data_dialog_content") }

ElementX/Sources/Mocks/Generated/GeneratedMocks.swift

@@ -326,6 +326,27 @@ class RoomProxyMock: RoomProxyProtocol {
             return sendReactionToReturnValue
         }
     }
+    //MARK: - sendImage
+
+    var sendImageBodyUrlCallsCount = 0
+    var sendImageBodyUrlCalled: Bool {
+        return sendImageBodyUrlCallsCount > 0
+    }
+    var sendImageBodyUrlReceivedArguments: (body: String, url: URL)?
+    var sendImageBodyUrlReceivedInvocations: [(body: String, url: URL)] = []
+    var sendImageBodyUrlReturnValue: Result<Void, RoomProxyError>!
+    var sendImageBodyUrlClosure: ((String, URL) async -> Result<Void, RoomProxyError>)?
+
+    func sendImage(body: String, url: URL) async -> Result<Void, RoomProxyError> {
+        sendImageBodyUrlCallsCount += 1
+        sendImageBodyUrlReceivedArguments = (body: body, url: url)
+        sendImageBodyUrlReceivedInvocations.append((body: body, url: url))
+        if let sendImageBodyUrlClosure = sendImageBodyUrlClosure {
+            return await sendImageBodyUrlClosure(body, url)
+        } else {
+            return sendImageBodyUrlReturnValue
+        }
+    }
     //MARK: - editMessage
 
     var editMessageOriginalCallsCount = 0

ElementX/Sources/Other/Extensions/FileManager.swift

@@ -31,4 +31,21 @@ extension FileManager {
         }
         try createDirectory(at: url, withIntermediateDirectories: withIntermediateDirectories)
     }
+    
+    func copyFileToTemporaryLocation(url: URL) throws -> URL {
+        let newURL = URL.temporaryDirectory.appendingPathComponent(url.lastPathComponent)
+        
+        try? removeItem(at: newURL)
+        try copyItem(at: url, to: newURL)
+        
+        return newURL
+    }
+    
+    func writeDataToTemporaryLocation(data: Data, fileName: String) throws -> URL {
+        let newURL = URL.temporaryDirectory.appendingPathComponent(fileName)
+        
+        try data.write(to: newURL)
+        
+        return newURL
+    }
 }

ElementX/Sources/Screens/DeveloperOptionsScreen/DeveloperOptionsScreenModels.swift

@@ -25,9 +25,11 @@ struct DeveloperOptionsScreenViewState: BindableState {
 struct DeveloperOptionsScreenViewStateBindings {
     var shouldCollapseRoomStateEvents: Bool
     var showStartChatFlow: Bool
+    var mediaUploadFlowEnabled: Bool
 }
 
 enum DeveloperOptionsScreenViewAction {
     case changedShouldCollapseRoomStateEvents
     case changedShowStartChatFlow
+    case changedShowMediaUploadFlow
 }

ElementX/Sources/Screens/DeveloperOptionsScreen/DeveloperOptionsScreenViewModel.swift

@@ -22,7 +22,9 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
     var callback: ((DeveloperOptionsScreenViewModelAction) -> Void)?
     
     init() {
-        let bindings = DeveloperOptionsScreenViewStateBindings(shouldCollapseRoomStateEvents: ServiceLocator.shared.settings.shouldCollapseRoomStateEvents, showStartChatFlow: ServiceLocator.shared.settings.startChatFlowFeatureFlag)
+        let bindings = DeveloperOptionsScreenViewStateBindings(shouldCollapseRoomStateEvents: ServiceLocator.shared.settings.shouldCollapseRoomStateEvents,
+                                                               showStartChatFlow: ServiceLocator.shared.settings.startChatFlowFeatureFlag,
+                                                               mediaUploadFlowEnabled: ServiceLocator.shared.settings.mediaUploadingFlowEnabled)
         let state = DeveloperOptionsScreenViewState(bindings: bindings)
         
         super.init(initialViewState: state)
@@ -38,6 +40,8 @@ class DeveloperOptionsScreenViewModel: DeveloperOptionsScreenViewModelType, Deve
             ServiceLocator.shared.settings.shouldCollapseRoomStateEvents = state.bindings.shouldCollapseRoomStateEvents
         case .changedShowStartChatFlow:
             ServiceLocator.shared.settings.startChatFlowFeatureFlag = state.bindings.showStartChatFlow
+        case .changedShowMediaUploadFlow:
+            ServiceLocator.shared.settings.mediaUploadingFlowEnabled = state.bindings.mediaUploadFlowEnabled
         }
     }
 }

ElementX/Sources/Screens/DeveloperOptionsScreen/View/DeveloperOptionsScreenScreen.swift

@@ -31,12 +31,20 @@ struct DeveloperOptionsScreenScreen: View {
                 .onChange(of: context.shouldCollapseRoomStateEvents) { _ in
                     context.send(viewAction: .changedShouldCollapseRoomStateEvents)
                 }
+                
                 Toggle(isOn: $context.showStartChatFlow) {
                     Text("Show Start Chat flow")
                 }
                 .onChange(of: context.showStartChatFlow) { _ in
                     context.send(viewAction: .changedShowStartChatFlow)
                 }
+                
+                Toggle(isOn: $context.mediaUploadFlowEnabled) {
+                    Text("Show Media Uploading flow")
+                }
+                .onChange(of: context.mediaUploadFlowEnabled) { _ in
+                    context.send(viewAction: .changedShowMediaUploadFlow)
+                }
             }
             
             Section {

ElementX/Sources/Screens/MediaPicker/CameraPicker.swift

@@ -0,0 +1,81 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+import UIKit
+
+enum CameraPickerAction {
+    case selectFile(URL)
+    case cancel
+    case error(Error?)
+}
+
+struct CameraPicker: UIViewControllerRepresentable {
+    private let callback: (CameraPickerAction) -> Void
+    
+    init(callback: @escaping (CameraPickerAction) -> Void) {
+        self.callback = callback
+    }
+
+    func makeUIViewController(context: Context) -> UIImagePickerController {
+        let imagePicker = UIImagePickerController()
+        imagePicker.sourceType = .camera
+        imagePicker.allowsEditing = true
+        imagePicker.delegate = context.coordinator
+        
+        if let mediaTypes = UIImagePickerController.availableMediaTypes(for: .camera) {
+            imagePicker.mediaTypes = mediaTypes
+        }
+        
+        return imagePicker
+    }
+    
+    func updateUIViewController(_ uiViewController: UIImagePickerController, context: Context) { }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(self)
+    }
+    
+    final class Coordinator: NSObject, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
+        private var parent: CameraPicker
+        
+        init(_ parent: CameraPicker) {
+            self.parent = parent
+        }
+        
+        func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey: Any]) {
+            if let videoURL = info[.mediaURL] as? URL {
+                parent.callback(.selectFile(videoURL))
+            } else if let image = info[.originalImage] as? UIImage {
+                guard let jpegData = image.jpegData(compressionQuality: 1.0) else {
+                    parent.callback(.error(nil))
+                    return
+                }
+                
+                let fileName = "\(UUID().uuidString).jpg"
+                
+                do {
+                    let url = try FileManager.default.writeDataToTemporaryLocation(data: jpegData, fileName: fileName)
+                    parent.callback(.selectFile(url))
+                } catch {
+                    parent.callback(.error(error))
+                }
+            } else {
+                parent.callback(.error(nil))
+            }
+        }
+    }
+}

ElementX/Sources/Screens/MediaPicker/DocumentPicker.swift

@@ -0,0 +1,69 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+import UIKit
+
+enum DocumentPickerAction {
+    case selectFile(URL)
+    case cancel
+    case error(Error?)
+}
+
+struct DocumentPicker: UIViewControllerRepresentable {
+    private let callback: (DocumentPickerAction) -> Void
+    
+    init(callback: @escaping (DocumentPickerAction) -> Void) {
+        self.callback = callback
+    }
+
+    func makeUIViewController(context: Context) -> UIDocumentPickerViewController {
+        let documentPicker = UIDocumentPickerViewController(forOpeningContentTypes: [.data])
+        documentPicker.allowsMultipleSelection = false
+        documentPicker.delegate = context.coordinator
+        
+        return documentPicker
+    }
+    
+    func updateUIViewController(_ uiViewController: UIDocumentPickerViewController, context: Context) { }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(self)
+    }
+    
+    final class Coordinator: NSObject, UIDocumentPickerDelegate {
+        private var parent: DocumentPicker
+        
+        init(_ parent: DocumentPicker) {
+            self.parent = parent
+        }
+        
+        // MARK: UIDocumentPickerDelegate
+        
+        func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
+            parent.callback(.cancel)
+        }
+        
+        func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
+            guard let url = urls.first else {
+                parent.callback(.error(nil))
+                return
+            }
+            
+            parent.callback(.selectFile(url))
+        }
+    }
+}

ElementX/Sources/Screens/MediaPicker/MediaPickerCoordinator.swift

@@ -0,0 +1,89 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+enum MediaPickerSource {
+    case camera
+    case photoLibrary
+    case documents
+}
+
+enum MediaPickerCoordinatorAction {
+    case selectMediaAtURL(URL)
+    case cancel
+    case error(Error?)
+}
+
+class MediaPickerCoordinator: CoordinatorProtocol {
+    private let source: MediaPickerSource
+    private let callback: ((MediaPickerCoordinatorAction) -> Void)?
+    
+    init(source: MediaPickerSource, callback: @escaping (MediaPickerCoordinatorAction) -> Void) {
+        self.source = source
+        self.callback = callback
+    }
+    
+    func toPresentable() -> AnyView {
+        AnyView(mediaPicker)
+    }
+    
+    @ViewBuilder
+    private var mediaPicker: some View {
+        switch source {
+        case .camera:
+            cameraPicker
+        case .photoLibrary:
+            PhotoLibraryPicker { [weak self] action in
+                switch action {
+                case .cancel:
+                    self?.callback?(.cancel)
+                case .error(let error):
+                    self?.callback?(.error(error))
+                case .selectFile(let url):
+                    self?.callback?(.selectMediaAtURL(url))
+                }
+            }
+        case .documents:
+            // The document picker automatically dismisses everything on selection
+            // Strongly retain self in the callback to forward actions correctly
+            DocumentPicker { action in
+                switch action {
+                case .cancel:
+                    self.callback?(.cancel)
+                case .error(let error):
+                    self.callback?(.error(error))
+                case .selectFile(let url):
+                    self.callback?(.selectMediaAtURL(url))
+                }
+            }
+        }
+    }
+    
+    private var cameraPicker: some View {
+        CameraPicker { [weak self] action in
+            switch action {
+            case .cancel:
+                self?.callback?(.cancel)
+            case .error(let error):
+                self?.callback?(.error(error))
+            case .selectFile(let url):
+                self?.callback?(.selectMediaAtURL(url))
+            }
+        }
+        .background(.black, ignoresSafeAreaEdges: .bottom)
+    }
+}

ElementX/Sources/Screens/MediaPicker/PhotoLibraryPicker.swift

@@ -0,0 +1,84 @@
+//
+// Copyright 2023 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import PhotosUI
+import SwiftUI
+
+enum PhotoLibraryPickerAction {
+    case selectFile(URL)
+    case cancel
+    case error(Error?)
+}
+
+struct PhotoLibraryPicker: UIViewControllerRepresentable {
+    private let callback: (PhotoLibraryPickerAction) -> Void
+    
+    init(callback: @escaping (PhotoLibraryPickerAction) -> Void) {
+        self.callback = callback
+    }
+
+    func makeUIViewController(context: Context) -> PHPickerViewController {
+        var configuration = PHPickerConfiguration(photoLibrary: .shared())
+        configuration.selectionLimit = 1
+        
+        let pickerViewController = PHPickerViewController(configuration: configuration)
+        pickerViewController.delegate = context.coordinator
+        
+        return pickerViewController
+    }
+    
+    func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) { }
+    
+    func makeCoordinator() -> Coordinator {
+        Coordinator(self)
+    }
+    
+    final class Coordinator: NSObject, PHPickerViewControllerDelegate {
+        private var parent: PhotoLibraryPicker
+        
+        init(_ parent: PhotoLibraryPicker) {
+            self.parent = parent
+        }
+        
+        // MARK: PHPickerViewControllerDelegate
+        
+        func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
+            guard let provider = results.first?.itemProvider else {
+                parent.callback(.cancel)
+                return
+            }
+            
+            provider.loadFileRepresentation(forTypeIdentifier: "public.item") { @MainActor [weak self] url, error in
+                guard let url else {
+                    self?.parent.callback(.error(error))
+                    return
+                }
+                
+                do {
+                    let _ = url.startAccessingSecurityScopedResource()
+                    let newURL = try FileManager.default.copyFileToTemporaryLocation(url: url)
+                    url.stopAccessingSecurityScopedResource()
+                    
+                    Task { @MainActor in
+                        self?.parent.callback(.selectFile(newURL))
+                    }
+                } catch {
+                    self?.parent.callback(.error(error))
+                }
+            }
+        }
+    }
+}

ElementX/Sources/Screens/MediaPickerPreviewScreen/MediaPickerPreviewScreenCoordinator.swift

@@ -0,0 +1,56 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+struct MediaPickerPreviewScreenCoordinatorParameters {
+    let url: URL
+    let title: String?
+}
+
+enum MediaPickerPreviewScreenCoordinatorAction {
+    case send
+    case cancel
+}
+
+final class MediaPickerPreviewScreenCoordinator: CoordinatorProtocol {
+    private let parameters: MediaPickerPreviewScreenCoordinatorParameters
+    
+    private var viewModel: MediaPickerPreviewScreenViewModelProtocol
+    private let callback: (MediaPickerPreviewScreenCoordinatorAction) -> Void
+    
+    init(parameters: MediaPickerPreviewScreenCoordinatorParameters, callback: @escaping (MediaPickerPreviewScreenCoordinatorAction) -> Void) {
+        self.parameters = parameters
+        self.callback = callback
+        
+        viewModel = MediaPickerPreviewScreenViewModel(url: parameters.url, title: parameters.title)
+    }
+    
+    func start() {
+        viewModel.callback = { [weak self] action in
+            switch action {
+            case .send:
+                self?.callback(.send)
+            case .cancel:
+                self?.callback(.cancel)
+            }
+        }
+    }
+        
+    func toPresentable() -> AnyView {
+        AnyView(MediaPickerPreviewScreenScreen(context: viewModel.context))
+    }
+}

ElementX/Sources/Screens/MediaPickerPreviewScreen/MediaPickerPreviewScreenModels.swift

@@ -14,18 +14,19 @@
 // limitations under the License.
 //
 
-import SwiftUI
+import Foundation
 
-class ActivityCoordinator: CoordinatorProtocol {
-    let items: [Any]
-    
-    init(items: [Any]) {
-        self.items = items
-    }
-    
-    func toPresentable() -> AnyView {
-        AnyView(UIActivityViewControllerWrapper(activityItems: items)
-            .presentationDetents([.medium])
-            .ignoresSafeArea())
-    }
+enum MediaPickerPreviewScreenViewModelAction {
+    case send
+    case cancel
+}
+
+struct MediaPickerPreviewScreenViewState: BindableState {
+    let url: URL
+    let title: String?
+}
+
+enum MediaPickerPreviewScreenViewAction {
+    case send
+    case cancel
 }

ElementX/Sources/Screens/MediaPickerPreviewScreen/MediaPickerPreviewScreenViewModel.swift

@@ -0,0 +1,36 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import SwiftUI
+
+typealias MediaPickerPreviewScreenViewModelType = StateStoreViewModel<MediaPickerPreviewScreenViewState, MediaPickerPreviewScreenViewAction>
+
+class MediaPickerPreviewScreenViewModel: MediaPickerPreviewScreenViewModelType, MediaPickerPreviewScreenViewModelProtocol {
+    var callback: ((MediaPickerPreviewScreenViewModelAction) -> Void)?
+
+    init(url: URL, title: String?) {
+        super.init(initialViewState: MediaPickerPreviewScreenViewState(url: url, title: title))
+    }
+    
+    override func process(viewAction: MediaPickerPreviewScreenViewAction) async {
+        switch viewAction {
+        case .send:
+            callback?(.send)
+        case .cancel:
+            callback?(.cancel)
+        }
+    }
+}

ElementX/Sources/Screens/MediaPickerPreviewScreen/MediaPickerPreviewScreenViewModelProtocol.swift

@@ -0,0 +1,23 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+
+@MainActor
+protocol MediaPickerPreviewScreenViewModelProtocol {
+    var callback: ((MediaPickerPreviewScreenViewModelAction) -> Void)? { get set }
+    var context: MediaPickerPreviewScreenViewModelType.Context { get }
+}

ElementX/Sources/Screens/MediaPickerPreviewScreen/View/MediaPickerPreviewScreenScreen.swift

@@ -0,0 +1,110 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import QuickLook
+import SwiftUI
+
+struct MediaPickerPreviewScreenScreen: View {
+    @ObservedObject var context: MediaPickerPreviewScreenViewModel.Context
+    
+    var body: some View {
+        NavigationStack {
+            PreviewView(context: context,
+                        fileURL: context.viewState.url,
+                        title: context.viewState.title)
+                .id(UUID())
+                .ignoresSafeArea(edges: .bottom)
+                .toolbar { toolbar }
+        }
+    }
+    
+    @ToolbarContentBuilder
+    private var toolbar: some ToolbarContent {
+        ToolbarItem(placement: .cancellationAction) {
+            Button { context.send(viewAction: .cancel) } label: {
+                Text(L10n.actionCancel)
+            }
+        }
+        ToolbarItem(placement: .confirmationAction) {
+            Button { context.send(viewAction: .send) } label: {
+                Text(L10n.actionSend)
+            }
+        }
+    }
+}
+
+private struct PreviewView: UIViewControllerRepresentable {
+    let context: MediaPickerPreviewScreenViewModel.Context
+    let fileURL: URL
+    let title: String?
+
+    func makeUIViewController(context: Context) -> UINavigationController {
+        let previewController = QLPreviewController()
+        previewController.dataSource = context.coordinator
+        previewController.delegate = context.coordinator
+
+        return UINavigationController(rootViewController: previewController)
+    }
+
+    func updateUIViewController(_ uiViewController: UINavigationController, context: Context) { }
+
+    func makeCoordinator() -> Coordinator {
+        Coordinator(view: self)
+    }
+    
+    class Coordinator: NSObject, QLPreviewControllerDataSource, QLPreviewControllerDelegate {
+        let view: PreviewView
+
+        init(view: PreviewView) {
+            self.view = view
+        }
+        
+        // MARK: - QLPreviewControllerDataSource
+        
+        func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
+            1
+        }
+
+        func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
+            PreviewItem(previewItemURL: view.fileURL, previewItemTitle: view.title)
+        }
+        
+        // MARK: - QLPreviewControllerDelegate
+        
+        func previewController(_ controller: QLPreviewController, editingModeFor previewItem: QLPreviewItem) -> QLPreviewItemEditingMode {
+            .disabled
+        }
+    }
+}
+
+private class PreviewItem: NSObject, QLPreviewItem {
+    var previewItemURL: URL?
+    var previewItemTitle: String?
+
+    init(previewItemURL: URL?, previewItemTitle: String?) {
+        self.previewItemURL = previewItemURL
+        self.previewItemTitle = previewItemTitle
+    }
+}
+
+// MARK: - Previews
+
+struct MediaPickerPreviewScreen_Previews: PreviewProvider {
+    static let viewModel = MediaPickerPreviewScreenViewModel(url: URL.picturesDirectory, title: nil)
+    static var previews: some View {
+        MediaPickerPreviewScreenScreen(context: viewModel.context)
+    }
+}

ElementX/Sources/Screens/RoomScreen/RoomScreenCoordinator.swift

@@ -62,6 +62,12 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
                 self.displayEmojiPickerScreen(for: itemId)
             case .displayReportContent(let itemId):
                 self.displayReportContent(for: itemId)
+            case .displayCameraPicker:
+                self.displayMediaPickerWithSource(.camera)
+            case .displayMediaPicker:
+                self.displayMediaPickerWithSource(.photoLibrary)
+            case .displayDocumentPicker:
+                self.displayMediaPickerWithSource(.documents)
             }
         }
     }
@@ -74,8 +80,32 @@ final class RoomScreenCoordinator: CoordinatorProtocol {
     func toPresentable() -> AnyView {
         AnyView(RoomScreen(context: viewModel.context))
     }
-
+    
     // MARK: - Private
+    
+    private func displayMediaPickerWithSource(_ source: MediaPickerSource) {
+        let mediaPickerCoordinator = MediaPickerCoordinator(source: source) { [weak self] action in
+            switch action {
+            case .cancel:
+                self?.navigationStackCoordinator.setSheetCoordinator(nil)
+            case .error:
+                break
+            case .selectMediaAtURL(let url):
+                let mediaPickerPreviewScreenCoordinator = MediaPickerPreviewScreenCoordinator(parameters: .init(url: url, title: url.lastPathComponent)) { action in
+                    switch action {
+                    case .send:
+                        self?.navigationStackCoordinator.setSheetCoordinator(nil)
+                    case .cancel:
+                        self?.navigationStackCoordinator.setSheetCoordinator(nil)
+                    }
+                }
+                
+                self?.navigationStackCoordinator.setSheetCoordinator(mediaPickerPreviewScreenCoordinator)
+            }
+        }
+        
+        navigationStackCoordinator.setSheetCoordinator(mediaPickerCoordinator)
+    }
 
     private func displayFilePreview(for file: MediaFileHandleProxy, with title: String?) {
         let params = FilePreviewCoordinatorParameters(mediaFile: file, title: title)

ElementX/Sources/Screens/RoomScreen/RoomScreenModels.swift

@@ -23,6 +23,9 @@ enum RoomScreenViewModelAction {
     case displayMediaFile(file: MediaFileHandleProxy, title: String?)
     case displayEmojiPicker(itemId: String)
     case displayReportContent(itemId: String)
+    case displayCameraPicker
+    case displayMediaPicker
+    case displayDocumentPicker
 }
 
 enum RoomScreenComposerMode: Equatable {
@@ -55,6 +58,10 @@ enum RoomScreenViewAction {
     /// Mark the entire room as read - this is heavy handed as a starting point for now.
     case markRoomAsRead
     case contextMenuAction(itemID: String, action: TimelineItemContextMenuAction)
+    
+    case displayCameraPicker
+    case displayMediaPicker
+    case displayDocumentPicker
 }
 
 struct RoomScreenViewState: BindableState {
@@ -66,6 +73,7 @@ struct RoomScreenViewState: BindableState {
     var isBackPaginating = false
     var showLoading = false
     var timelineStyle: TimelineStyle
+    var mediaUploadingFlowEnabled: Bool
     
     var bindings: RoomScreenViewStateBindings
     

ElementX/Sources/Screens/RoomScreen/RoomScreenViewModel.swift

@@ -39,6 +39,7 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
                                                          roomTitle: roomName ?? "Unknown room 💥",
                                                          roomAvatarURL: roomAvatarUrl,
                                                          timelineStyle: ServiceLocator.shared.settings.timelineStyle,
+                                                         mediaUploadingFlowEnabled: ServiceLocator.shared.settings.mediaUploadingFlowEnabled,
                                                          bindings: .init(composerText: "", composerFocused: false)),
                    imageProvider: mediaProvider)
         
@@ -74,6 +75,10 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
             .weakAssign(to: \.state.timelineStyle, on: self)
             .store(in: &cancellables)
         
+        ServiceLocator.shared.settings.$mediaUploadingFlowEnabled
+            .weakAssign(to: \.state.mediaUploadingFlowEnabled, on: self)
+            .store(in: &cancellables)
+        
         buildTimelineViews()
     }
     
@@ -111,6 +116,12 @@ class RoomScreenViewModel: RoomScreenViewModelType, RoomScreenViewModelProtocol
             await markRoomAsRead()
         case .contextMenuAction(let itemID, let action):
             processContentMenuAction(action, itemID: itemID)
+        case .displayCameraPicker:
+            callback?(.displayCameraPicker)
+        case .displayMediaPicker:
+            callback?(.displayMediaPicker)
+        case .displayDocumentPicker:
+            callback?(.displayDocumentPicker)
         }
     }
     

ElementX/Sources/Screens/RoomScreen/View/RoomScreen.swift

@@ -23,7 +23,16 @@ struct RoomScreen: View {
     var body: some View {
         timeline
             .background(Color.element.background.ignoresSafeArea()) // Kills the toolbar translucency.
-            .safeAreaInset(edge: .bottom, spacing: 0) { messageComposer }
+            .safeAreaInset(edge: .bottom, spacing: 0) {
+                HStack(spacing: 4.0) {
+                    if context.viewState.mediaUploadingFlowEnabled {
+                        sendAttachmentButton
+                    }
+                    
+                    messageComposer
+                }
+                .padding()
+            }
             .navigationBarTitleDisplayMode(.inline)
             .toolbar { toolbar }
             .toolbarRole(.editor) // Hide the back button title.
@@ -40,7 +49,7 @@ struct RoomScreen: View {
             }
     }
     
-    var timeline: some View {
+    private var timeline: some View {
         TimelineView()
             .id(context.viewState.roomId)
             .environmentObject(context)
@@ -48,7 +57,7 @@ struct RoomScreen: View {
             .overlay(alignment: .bottomTrailing) { scrollToBottomButton }
     }
     
-    var messageComposer: some View {
+    private var messageComposer: some View {
         MessageComposer(text: $context.composerText,
                         focused: $context.composerFocused,
                         sendingDisabled: context.viewState.sendButtonDisabled,
@@ -59,10 +68,9 @@ struct RoomScreen: View {
         } editCancellationAction: {
             context.send(viewAction: .cancelEdit)
         }
-        .padding()
     }
     
-    var scrollToBottomButton: some View {
+    private var scrollToBottomButton: some View {
         Button { context.viewState.scrollToBottomPublisher.send(()) } label: {
             Image(systemName: "chevron.down")
                 .font(.element.body)
@@ -84,7 +92,7 @@ struct RoomScreen: View {
     }
     
     @ViewBuilder
-    var loadingIndicator: some View {
+    private var loadingIndicator: some View {
         if context.viewState.showLoading {
             ProgressView()
                 .progressViewStyle(.circular)
@@ -96,7 +104,7 @@ struct RoomScreen: View {
     }
     
     @ToolbarContentBuilder
-    var toolbar: some ToolbarContent {
+    private var toolbar: some ToolbarContent {
         // .principal + .primaryAction works better than .navigation leading + trailing
         // as the latter disables interaction in the action button for rooms with long names
         ToolbarItem(placement: .principal) {
@@ -104,6 +112,30 @@ struct RoomScreen: View {
         }
     }
     
+    private var sendAttachmentButton: some View {
+        Menu {
+            Button {
+                context.send(viewAction: .displayDocumentPicker)
+            } label: {
+                Label(UntranslatedL10n.mediaUploadDocumentPicker, systemImage: "doc")
+            }
+            Button {
+                context.send(viewAction: .displayMediaPicker)
+            } label: {
+                Label(UntranslatedL10n.mediaUploadPhotoAndVideoPicker, systemImage: "photo")
+            }
+            Button {
+                context.send(viewAction: .displayCameraPicker)
+            } label: {
+                Label(UntranslatedL10n.mediaUploadCameraPicker, systemImage: "camera")
+            }
+        } label: {
+            Image(systemName: "plus.circle")
+                .font(.element.title1)
+                .foregroundColor(.element.brand)
+        }
+    }
+    
     private func sendMessage() {
         guard !context.viewState.sendButtonDisabled else { return }
         context.send(viewAction: .sendMessage)

ElementX/Sources/Services/Room/RoomProxy.swift

@@ -189,15 +189,15 @@ class RoomProxy: RoomProxyProtocol {
         let transactionId = genTransactionId()
         
         return await Task.dispatch(on: userInitiatedDispatchQueue) {
-            if let eventID {
-                do {
+            do {
+                if let eventID {
                     try self.room.sendReply(msg: message, inReplyToEventId: eventID, txnId: transactionId)
-                } catch {
-                    return .failure(.failedSendingMessage)
+                } else {
+                    let messageContent = messageEventContentFromMarkdown(md: message)
+                    try self.room.send(msg: messageContent, txnId: transactionId)
                 }
-            } else {
-                let messageContent = messageEventContentFromMarkdown(md: message)
-                self.room.send(msg: messageContent, txnId: transactionId)
+            } catch {
+                return .failure(.failedSendingMessage)
             }
             return .success(())
         }
@@ -218,6 +218,10 @@ class RoomProxy: RoomProxyProtocol {
             }
         }
     }
+    
+    func sendImage(body: String, url: URL) async -> Result<Void, RoomProxyError> {
+        .failure(.failedSendingMedia)
+    }
 
     func editMessage(_ newMessage: String, original eventID: String) async -> Result<Void, RoomProxyError> {
         sendMessageBackgroundTask = backgroundTaskService.startBackgroundTask(withName: backgroundTaskName, isReusable: true)

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -26,6 +26,7 @@ enum RoomProxyError: Error {
     case failedSendingReadReceipt
     case failedSendingMessage
     case failedSendingReaction
+    case failedSendingMedia
     case failedEditingMessage
     case failedRedactingEvent
     case failedReportingContent
@@ -69,6 +70,8 @@ protocol RoomProxyProtocol {
     func sendMessage(_ message: String, inReplyTo eventID: String?) async -> Result<Void, RoomProxyError>
     
     func sendReaction(_ reaction: String, to eventID: String) async -> Result<Void, RoomProxyError>
+    
+    func sendImage(body: String, url: URL) async -> Result<Void, RoomProxyError>
 
     func editMessage(_ newMessage: String, original eventID: String) async -> Result<Void, RoomProxyError>
     

ElementX/SupportingFiles/Info.plist

@@ -22,6 +22,10 @@
 	<string>$(CURRENT_PROJECT_VERSION)</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
+	<key>NSCameraUsageDescription</key>
+	<string>The camera is used to take and upload photos and videos.</string>
+	<key>NSMicrophoneUsageDescription</key>
+	<string>The microphone is used to take videos.</string>
 	<key>NSUserActivityTypes</key>
 	<array>
 		<string>INSendMessageIntent</string>

ElementX/SupportingFiles/target.yml

@@ -64,6 +64,9 @@ targets:
         NSUserActivityTypes: [
           INSendMessageIntent
         ]
+        NSCameraUsageDescription: The camera is used to take and upload photos and videos.
+        NSMicrophoneUsageDescription: The microphone is used to take videos.
+
 
     settings:
       base:

UITests/Sources/MediaPickerPreviewScreenScreenUITests.swift

@@ -0,0 +1,20 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import ElementX
+import XCTest
+
+class MediaPickerPreviewScreenScreenUITests: XCTestCase { }

UnitTests/Sources/MediaPickerPreviewScreenViewModelTests.swift

@@ -0,0 +1,22 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import XCTest
+
+@testable import ElementX
+
+@MainActor
+class MediaPickerPreviewScreenScreenViewModelTests: XCTestCase { }