87 lines
3.3 KiB
Swift
87 lines
3.3 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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import Combine
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import GRDB
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import DifferenceKit
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import SessionUIKit
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import SessionMessagingKit
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import SessionUtilitiesKit
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class PhotoCollectionPickerViewModel: SessionTableViewModel, ObservableTableSource {
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typealias TableItem = String
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public let dependencies: Dependencies
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public let state: TableDataState<Section, TableItem> = TableDataState()
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public let observableState: ObservableTableSourceState<Section, TableItem> = ObservableTableSourceState()
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private let library: PhotoLibrary
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private let onCollectionSelected: (PhotoCollection) -> Void
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private var photoCollections: CurrentValueSubject<[PhotoCollection], Error>
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// MARK: - Initialization
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init(
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library: PhotoLibrary,
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onCollectionSelected: @escaping (PhotoCollection) -> Void,
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using dependencies: Dependencies = Dependencies()
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) {
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self.dependencies = dependencies
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self.library = library
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self.onCollectionSelected = onCollectionSelected
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self.photoCollections = CurrentValueSubject(library.allPhotoCollections())
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}
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// MARK: - Config
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public enum Section: SessionTableSection {
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case content
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}
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// MARK: - Content
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let title: String = "NOTIFICATIONS_STYLE_SOUND_TITLE".localized()
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lazy var observation: TargetObservation = ObservationBuilder
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.subject(photoCollections)
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.map { collections -> [SectionModel] in
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[
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SectionModel(
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model: .content,
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elements: collections.map { collection in
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let contents: PhotoCollectionContents = collection.contents()
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let photoMediaSize: PhotoMediaSize = PhotoMediaSize(
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thumbnailSize: CGSize(
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width: IconSize.extraLarge.size,
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height: IconSize.extraLarge.size
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)
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)
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let lastAssetItem: PhotoPickerAssetItem? = contents.lastAssetItem(photoMediaSize: photoMediaSize)
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return SessionCell.Info(
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id: collection.id,
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leftAccessory: .iconAsync(size: .extraLarge, shouldFill: true) { imageView in
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// Note: We need to capture 'lastAssetItem' otherwise it'll be released and we won't
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// be able to load the thumbnail
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lastAssetItem?.asyncThumbnail { [weak imageView] image in
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imageView?.image = image
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}
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},
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title: collection.localizedTitle(),
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subtitle: "\(contents.assetCount)",
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onTap: { [weak self] in
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self?.onCollectionSelected(collection)
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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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// MARK: PhotoLibraryDelegate
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func photoLibraryDidChange(_ photoLibrary: PhotoLibrary) {
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self.photoCollections.send(library.allPhotoCollections())
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}
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}
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