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73 lines
2.5 KiB
Swift
73 lines
2.5 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Combine
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import Foundation
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import Mastodon
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import Network
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public final class AttachmentViewModel: ObservableObject {
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public let attachment: Attachment
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@Published public var editingDescription: String
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@Published public var editingFocus: Attachment.Meta.Focus
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@Published public private(set) var descriptionRemainingCharacters = AttachmentViewModel.descriptionMaxCharacters
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private let identityContext: IdentityContext
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private let status: Status?
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init(attachment: Attachment, identityContext: IdentityContext, status: Status? = nil) {
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self.attachment = attachment
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self.identityContext = identityContext
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self.status = status
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editingDescription = attachment.description ?? ""
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editingFocus = attachment.meta?.focus ?? .default
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$editingDescription
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.map { Self.descriptionMaxCharacters - $0.count }
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.assign(to: &$descriptionRemainingCharacters)
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}
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}
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public extension AttachmentViewModel {
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var tag: Int {
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attachment.id.appending(status?.id ?? "").hashValue
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}
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var shouldAutoplay: Bool {
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switch attachment.type {
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case .video:
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return identityContext.appPreferences.autoplayVideos == .always
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|| (identityContext.appPreferences.autoplayVideos == .wifi
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&& Self.wifiMonitor.currentPath.status == .satisfied)
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case .gifv:
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return identityContext.appPreferences.autoplayGIFs == .always
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|| (identityContext.appPreferences.autoplayGIFs == .wifi
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&& Self.wifiMonitor.currentPath.status == .satisfied)
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default: return false
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}
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}
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}
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extension AttachmentViewModel {
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func updated() -> AnyPublisher<AttachmentViewModel, Error> {
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identityContext.service.updateAttachment(id: attachment.id,
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description: editingDescription,
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focus: editingFocus)
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.compactMap { [weak self] in
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guard let self = self else { return nil }
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return AttachmentViewModel(attachment: $0, identityContext: self.identityContext, status: self.status)
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}
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.eraseToAnyPublisher()
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}
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}
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private extension AttachmentViewModel {
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static let descriptionMaxCharacters = 1500
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static var wifiMonitor: NWPathMonitor = {
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let monitor = NWPathMonitor(requiredInterfaceType: .wifi)
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monitor.start(queue: .main)
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return monitor
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}()
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}
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