97 lines
3.5 KiB
Swift
97 lines
3.5 KiB
Swift
//
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// Copyright 2023, 2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import PhotosUI
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import SwiftUI
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enum PhotoLibraryPickerAction {
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case selectFile(URL)
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case cancel
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case error(PhotoLibraryPickerError)
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}
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enum PhotoLibraryPickerError: Error {
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case failedLoadingFileRepresentation(Error?)
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case failedCopyingFile
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}
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struct PhotoLibraryPicker: UIViewControllerRepresentable {
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private let userIndicatorController: UserIndicatorControllerProtocol
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private let callback: (PhotoLibraryPickerAction) -> Void
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init(userIndicatorController: UserIndicatorControllerProtocol, callback: @escaping (PhotoLibraryPickerAction) -> Void) {
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self.userIndicatorController = userIndicatorController
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self.callback = callback
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}
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func makeUIViewController(context: Context) -> PHPickerViewController {
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var configuration = PHPickerConfiguration(photoLibrary: .shared())
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configuration.selectionLimit = 1
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let pickerViewController = PHPickerViewController(configuration: configuration)
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pickerViewController.delegate = context.coordinator
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return pickerViewController
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}
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func updateUIViewController(_ uiViewController: PHPickerViewController, context: Context) { }
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func makeCoordinator() -> Coordinator {
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Coordinator(self)
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}
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final class Coordinator: NSObject, PHPickerViewControllerDelegate {
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private var photoLibraryPicker: PhotoLibraryPicker
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init(_ photoLibraryPicker: PhotoLibraryPicker) {
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self.photoLibraryPicker = photoLibraryPicker
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}
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// MARK: PHPickerViewControllerDelegate
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private static let loadingIndicatorIdentifier = "\(PhotoLibraryPicker.self)-Loading"
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func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
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guard let provider = results.first?.itemProvider,
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let contentType = provider.preferredContentType else {
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photoLibraryPicker.callback(.cancel)
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return
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}
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picker.delegate = nil
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photoLibraryPicker.userIndicatorController.submitIndicator(UserIndicator(id: Self.loadingIndicatorIdentifier, type: .modal, title: L10n.commonLoading))
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defer {
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photoLibraryPicker.userIndicatorController.retractIndicatorWithId(Self.loadingIndicatorIdentifier)
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}
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provider.loadFileRepresentation(forTypeIdentifier: contentType.type.identifier) { [weak self] url, error in
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guard let url else {
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Task { @MainActor in
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self?.photoLibraryPicker.callback(.error(.failedLoadingFileRepresentation(error)))
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}
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return
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}
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do {
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let _ = url.startAccessingSecurityScopedResource()
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let newURL = try FileManager.default.copyFileToTemporaryDirectory(file: url)
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url.stopAccessingSecurityScopedResource()
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Task { @MainActor in
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self?.photoLibraryPicker.callback(.selectFile(newURL))
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}
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} catch {
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Task { @MainActor in
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self?.photoLibraryPicker.callback(.error(.failedCopyingFile))
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}
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}
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}
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}
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}
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}
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