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* Update Storage iOS Sample.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,252 @@ | ||
| // | ||
| // Copyright (c) 2022 Google Inc. | ||
| // | ||
| // 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 FirebaseAuth | ||
| import FirebaseStorage | ||
| import FirebaseStorageSwift | ||
|
|
||
| struct ContentView: View { | ||
| @EnvironmentObject var viewModel: ViewModel | ||
| @State private var authenticated: Bool = true | ||
| private var storage = Storage.storage() | ||
| private var imageURL: URL = FileManager.default.temporaryDirectory | ||
| .appendingPathComponent("tempImage.jpeg") | ||
|
|
||
| var body: some View { | ||
| ZStack { | ||
| VStack { | ||
| if let image = viewModel.image { | ||
| image | ||
| .resizable() | ||
| .scaledToFit() | ||
| .frame(minWidth: 300, maxHeight: 200) | ||
| .cornerRadius(16) | ||
|
|
||
| } else { | ||
| Image(systemName: "photo.fill") | ||
| .resizable() | ||
| .scaledToFit() | ||
| .opacity(0.6) | ||
| .frame(width: 300, height: 200, alignment: .top) | ||
| .cornerRadius(16) | ||
| .padding(.horizontal) | ||
| } | ||
| Button("Photo") { | ||
| viewModel.showingImagePicker = true | ||
| } | ||
| .buttonStyle(OrangeButton()) | ||
| .disabled(!authenticated) | ||
| if viewModel.image != nil { | ||
| Button("Upload from Data") { | ||
| uploadFromData() | ||
| } | ||
| .buttonStyle(OrangeButton()) | ||
| } | ||
|
|
||
| if viewModel.image != nil, FileManager.default.fileExists(atPath: imageURL.path) { | ||
| Button("Upload from URL") { | ||
| uploadFromALocalFile() | ||
| } | ||
| .buttonStyle(OrangeButton()) | ||
| } | ||
| if viewModel.downloadPicButtonEnabled { | ||
| Button("Download") { | ||
| Task { | ||
| await downloadImage() | ||
| } | ||
| } | ||
| .buttonStyle(OrangeButton()) | ||
| } | ||
| } | ||
| .sheet(isPresented: $viewModel.showingImagePicker) { | ||
| ImagePicker(image: $viewModel.inputImage, imageURL: imageURL) | ||
| } | ||
| .sheet(isPresented: $viewModel.downloadDone) { | ||
| if let image = viewModel.downloadedImage { | ||
| image | ||
| .resizable() | ||
| .scaledToFit() | ||
| .frame(minWidth: 0, maxWidth: .infinity) | ||
| } | ||
| } | ||
| .onChange(of: viewModel.inputImage) { _ in | ||
| loadImage() | ||
| } | ||
| .task { | ||
| await signInAnonymously() | ||
| } | ||
| .alert("Error", isPresented: $viewModel.errorFound) { | ||
| Text(viewModel.errInfo.debugDescription) | ||
| Button("ok") {} | ||
| } | ||
| .alert("Image was uploaded", isPresented: $viewModel.fileUploaded) { | ||
| Button("ok") {} | ||
| Button("Link") { | ||
| if let url = viewModel.fileDownloadURL { | ||
| print("downloaded url: \(url)") | ||
| UIApplication.shared.open(url) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if viewModel.isLoading { | ||
| LoadingView() | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func loadImage() { | ||
| guard let inputImage = viewModel.inputImage else { | ||
| return | ||
| } | ||
| viewModel.image = Image(uiImage: inputImage) | ||
| viewModel.showingImagePicker = false | ||
| } | ||
|
|
||
| func uploadFromALocalFile() { | ||
| let filePath = Auth.auth().currentUser!.uid + | ||
| "/\(Int(Date.timeIntervalSinceReferenceDate * 1000))/\(imageURL.lastPathComponent)" | ||
| let storageRef = storage.reference(withPath: filePath) | ||
|
|
||
| viewModel.isLoading = true | ||
| storageRef.putFile(from: imageURL, metadata: nil) { metadata, error in | ||
| guard let _ = metadata else { | ||
| // Uh-oh, an error occurred! | ||
| viewModel.errorFound = true | ||
| viewModel.errInfo = error | ||
| return | ||
| } | ||
|
|
||
| viewModel.isLoading = false | ||
| // You can also access to download URL after upload. | ||
| fetchDownloadURL(storageRef, storagePath: filePath) | ||
| } | ||
| } | ||
|
|
||
| func uploadFromData() { | ||
| guard let imageData = viewModel.inputImage?.jpeg else { | ||
| print("The image from url \(imageURL.path) cannot be transferred to data.") | ||
| return | ||
| } | ||
| let filePath = Auth.auth().currentUser!.uid + | ||
| "/\(Int(Date.timeIntervalSinceReferenceDate * 1000))/fromData/\(imageURL.lastPathComponent)" | ||
| let storageRef = storage.reference(withPath: filePath) | ||
|
|
||
| viewModel.isLoading = true | ||
| storageRef.putData(imageData, metadata: nil) { metadata, error in | ||
| guard let _ = metadata else { | ||
| // Uh-oh, an error occurred! | ||
| viewModel.errorFound = true | ||
| viewModel.errInfo = error | ||
| return | ||
| } | ||
| viewModel.isLoading = false | ||
| // You can also access to download URL after upload. | ||
| fetchDownloadURL(storageRef, storagePath: filePath) | ||
| } | ||
| } | ||
|
|
||
| func fetchDownloadURL(_ storageRef: StorageReference, storagePath: String) { | ||
| storageRef.downloadURL { url, error in | ||
|
|
||
| guard let downloadURL = url else { | ||
| print("Error getting download URL: \(error.debugDescription)") | ||
| viewModel.errorFound = true | ||
| viewModel.errInfo = error | ||
| return | ||
| } | ||
| viewModel.remoteStoragePath = storagePath | ||
| viewModel.downloadPicButtonEnabled = true | ||
| viewModel.fileUploaded = true | ||
| viewModel.fileDownloadURL = downloadURL | ||
| } | ||
| } | ||
|
|
||
| func downloadImage() async { | ||
| // Create a reference to the file you want to download | ||
| let storageRef = Storage.storage().reference() | ||
|
|
||
| let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) | ||
| let documentsDirectory = paths[0] | ||
| let filePath = "file:\(documentsDirectory)/myimage.jpg" | ||
| guard let fileURL = URL(string: filePath) else { return } | ||
| guard let storagePath = viewModel.remoteStoragePath else { | ||
| return | ||
| } | ||
|
|
||
| viewModel.isLoading = true | ||
| do { | ||
| let imageURL = try await storageRef.child(storagePath).writeAsync(toFile: fileURL) | ||
| viewModel.downloadDone = true | ||
| viewModel.downloadedImage = Image(uiImage: UIImage(contentsOfFile: imageURL.path)!) | ||
| } catch { | ||
| viewModel.errorFound = true | ||
| viewModel.errInfo = error | ||
| } | ||
| viewModel.isLoading = false | ||
| } | ||
|
|
||
| func signInAnonymously() async { | ||
| // Using Cloud Storage for Firebase requires the user be authenticated. Here we are using | ||
| // anonymous authentication. | ||
| if Auth.auth().currentUser == nil { | ||
| do { | ||
| try await Auth.auth().signInAnonymously() | ||
| authenticated = true | ||
| } catch { | ||
| viewModel.errorFound = true | ||
| viewModel.errInfo = error | ||
| authenticated = false | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| struct OrangeButton: ButtonStyle { | ||
| @Environment(\.isEnabled) private var isEnabled: Bool | ||
|
|
||
| func makeBody(configuration: Configuration) -> some View { | ||
| configuration.label | ||
| .padding() | ||
| .background(isEnabled ? Color.orange : Color.orange.opacity(0.5)) | ||
| .foregroundColor(.white) | ||
| .clipShape(RoundedRectangle(cornerRadius: 16.0)) | ||
| } | ||
| } | ||
|
|
||
| extension UIImage { | ||
| var jpeg: Data? { jpegData(compressionQuality: 1) } | ||
| } | ||
|
|
||
| struct LoadingView: View { | ||
| var body: some View { | ||
| ZStack { | ||
| Color(.systemBackground) | ||
| .ignoresSafeArea() | ||
| .opacity(0.5) | ||
| ProgressView() | ||
| .progressViewStyle(CircularProgressViewStyle(tint: .orange)) | ||
| .scaleEffect(3) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| struct ContentView_Previews: PreviewProvider { | ||
| static var previews: some View { | ||
| ContentView() | ||
| } | ||
| } |
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