253 lines
12 KiB
Swift
253 lines
12 KiB
Swift
import AVFoundation
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import Combine
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import Foundation
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import Photos
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import UIKit
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final class SharingMiddleware {
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static let shared = SharingMiddleware()
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func middleware(state _: AppState, action: AppAction) -> AnyPublisher<AppAction, Never> {
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switch action {
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case .sharingAction(.checkCameraAccess):
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return Future<AppAction, Never> { promise in
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let status = AVCaptureDevice.authorizationStatus(for: .video)
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switch status {
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case .authorized:
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promise(.success(.sharingAction(.setCameraAccess(true))))
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case .notDetermined:
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AVCaptureDevice.requestAccess(for: .video) { granted in
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promise(.success(.sharingAction(.setCameraAccess(granted))))
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}
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case .denied, .restricted:
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promise(.success(.sharingAction(.setCameraAccess(false))))
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@unknown default:
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promise(.success(.sharingAction(.setCameraAccess(false))))
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}
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}
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.eraseToAnyPublisher()
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case .sharingAction(.checkGalleryAccess):
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return Future<AppAction, Never> { promise in
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let status = PHPhotoLibrary.authorizationStatus()
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switch status {
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case .authorized, .limited:
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promise(.success(.sharingAction(.setGalleryAccess(true))))
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case .notDetermined:
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PHPhotoLibrary.requestAuthorization { status in
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promise(.success(.sharingAction(.setGalleryAccess(status == .authorized))))
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}
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case .denied, .restricted:
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promise(.success(.sharingAction(.setGalleryAccess(false))))
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@unknown default:
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promise(.success(.sharingAction(.setGalleryAccess(false))))
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}
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}
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.eraseToAnyPublisher()
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case .sharingAction(.fetchGallery):
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return Future<AppAction, Never> { promise in
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let fetchOptions = PHFetchOptions()
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fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
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let assets = PHAsset.fetchAssets(with: fetchOptions)
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var items: [SharingGalleryItem] = []
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assets.enumerateObjects { asset, _, _ in
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if asset.mediaType == .image {
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items.append(.init(id: asset.localIdentifier, type: .photo))
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} else if asset.mediaType == .video {
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items.append(.init(id: asset.localIdentifier, type: .video))
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}
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}
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promise(.success(.sharingAction(.galleryFetched(items))))
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}
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.eraseToAnyPublisher()
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case .sharingAction(.galleryFetched(let items)):
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DispatchQueue.global(qos: .background).async {
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// for item in items {
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// switch item.type {
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// case .photo:
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// self.makePhotoThumbnail(assetId: PHAsset.fetchAssets(withLocalIdentifiers: [item.id], options: nil).firstObject!) { data in
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// if let data {
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// DispatchQueue.main.async {
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// store.dispatch(.sharingAction(.thumbnailUpdated(data, item.id)))
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// }
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// }
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// }
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//
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// case .video:
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// self.fetchVideo(asset: PHAsset.fetchAssets(withLocalIdentifiers: [item.id], options: nil).firstObject!) { newItem in
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// if let newItem {
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// newItems.append(newItem)
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// }
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// }
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// }
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// }
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}
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return Empty().eraseToAnyPublisher()
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default:
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return Empty().eraseToAnyPublisher()
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}
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}
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}
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private extension SharingMiddleware {
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func makePhotoThumbnail(asset: PHAsset, completion: @escaping (Data?) -> Void) {
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PHImageManager.default().requestImage(
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for: asset,
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targetSize: PHImageManagerMaximumSize,
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contentMode: .aspectFill,
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options: nil
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) { _, _ in
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// guard let image = image?.scaleAndCropImage(toExampleSize: CGSize(width: Const.galleryGridSize, height: Const.galleryGridSize)) else {
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// completion(nil)
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// return
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// }
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// let data = image.jpegData(compressionQuality: 1.0) ?? Data()
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// completion(.init(id: asset.localIdentifier, type: .photo, thumbnail: data))
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completion(.init(id: asset.localIdentifier, type: .photo, thumbnail: Data()))
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}
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}
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func fetchVideo(asset: PHAsset, completion: @escaping (SharingGalleryItem?) -> Void) {
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PHImageManager.default().requestAVAsset(forVideo: asset, options: nil) { _, _, _ in
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// if let avAsset {
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// let imageGenerator = AVAssetImageGenerator(asset: avAsset)
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// imageGenerator.appliesPreferredTrackTransform = true
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// let time = CMTimeMake(value: 1, timescale: 2)
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// do {
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// let imageRef = try imageGenerator.copyCGImage(at: time, actualTime: nil)
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// let thumbnail = UIImage(cgImage: imageRef)
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// guard let image = thumbnail.scaleAndCropImage(toExampleSize: CGSize(width: Const.galleryGridSize, height: Const.galleryGridSize)) else {
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// completion(nil)
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// return
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// }
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// let data = image.jpegData(compressionQuality: 1.0) ?? Data()
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// completion(.init(id: asset.localIdentifier, type: .video, thumbnail: data, duration: asset.duration.minAndSec))
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// } catch {
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// print("Failed to create thumbnail image")
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// completion(nil)
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// }
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// } else {
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// completion(nil)
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// }
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completion(.init(id: asset.localIdentifier, type: .photo, thumbnail: Data()))
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}
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}
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}
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// case .sharingAction(.fetchGallery):
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// return Future<AppAction, Never> { promise in
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// DispatchQueue.global(qos: .background).async {
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// let fetchOptions = PHFetchOptions()
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// fetchOptions.sortDescriptors = [NSSortDescriptor(key: "creationDate", ascending: false)]
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// let assets = PHAsset.fetchAssets(with: fetchOptions)
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//
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// let manager = PHImageManager.default()
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// let option = PHImageRequestOptions()
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// option.isSynchronous = true
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//
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// var items: [SharingGalleryItem] = []
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// let group = DispatchGroup()
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// assets.enumerateObjects { asset, _, _ in
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// if asset.mediaType == .image {
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// group.enter()
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// manager.requestImage(
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// for: asset,
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// targetSize: PHImageManagerMaximumSize,
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// contentMode: .aspectFill,
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// options: option
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// ) { image, _ in
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// if image != nil {
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// items.append(.init(id: asset.localIdentifier, type: .photo))
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// group.leave()
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// }
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// }
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// } else if asset.mediaType == .video {
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// group.enter()
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// manager.requestAVAsset(forVideo: asset, options: nil) { avAsset, _, _ in
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// if avAsset != nil {
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// items.append(.init(id: asset.localIdentifier, type: .video, duration: asset.duration.minAndSec))
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// group.leave()
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// }
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// }
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// }
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// }
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// group.notify(queue: .main) {
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// promise(.success(.sharingAction(.galleryFetched(items))))
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// }
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// }
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// }
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// .eraseToAnyPublisher()
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//
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// case .sharingAction(.galleryFetched(let items)):
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// return Future<AppAction, Never> { promise in
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// DispatchQueue.global(qos: .background).async {
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// let ids = items
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// .filter { $0.thumbnail == nil }
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// .map { $0.id }
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// let assets = PHAsset.fetchAssets(withLocalIdentifiers: ids, options: nil)
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//
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// var newItems: [SharingGalleryItem] = []
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// let group = DispatchGroup()
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//
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// assets.enumerateObjects { asset, _, _ in
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// let manager = PHImageManager.default()
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// group.enter()
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// if asset.mediaType == .image {
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// manager.requestImage(
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// for: asset,
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// targetSize: PHImageManagerMaximumSize,
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// contentMode: .aspectFill,
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// options: nil
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// ) { image, _ in
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// image?.scaleAndCropImage(toExampleSize: CGSize(width: Const.galleryGridSize, height: Const.galleryGridSize)) { image in
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// if let image {
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// let data = image.jpegData(compressionQuality: 1.0) ?? Data()
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// newItems.append(.init(id: asset.localIdentifier, type: .photo, thumbnail: data))
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// }
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// group.leave()
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// }
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// }
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// } else if asset.mediaType == .video {
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// manager.requestAVAsset(forVideo: asset, options: nil) { avAsset, _, _ in
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// if let avAsset {
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// let imageGenerator = AVAssetImageGenerator(asset: avAsset)
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// imageGenerator.appliesPreferredTrackTransform = true
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// let time = CMTimeMake(value: 1, timescale: 2)
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// do {
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// let imageRef = try imageGenerator.copyCGImage(at: time, actualTime: nil)
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// let thumbnail = UIImage(cgImage: imageRef)
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// thumbnail.scaleAndCropImage(toExampleSize: CGSize(width: Const.galleryGridSize, height: Const.galleryGridSize), completion: { image in
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// if let image {
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// let data = image.jpegData(compressionQuality: 1.0) ?? Data()
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// newItems.append(.init(id: asset.localIdentifier, type: .video, thumbnail: data, duration: asset.duration.minAndSec))
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// }
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// group.leave()
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// })
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// } catch {
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// print("Failed to create thumbnail image")
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// group.leave()
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// }
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// } else {
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// group.leave()
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// }
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// }
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// } else {
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// group.leave()
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// }
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// }
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// group.notify(queue: .main) {
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// promise(.success(.sharingAction(.thumbnailUpdated(newItems))))
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// }
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// }
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// }
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// .eraseToAnyPublisher()
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