feat: add travel album module
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//
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// TravelAlbumEntryViewModel.swift
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// suixinkan
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//
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import Foundation
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/// 旅拍相册入口页 ViewModel，负责列表、创建相册和相册码状态。
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final class TravelAlbumEntryViewModel {
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enum CreateMode: Int, Sendable {
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case preShoot = 0
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case preOrder = 1
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var apiType: Int {
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switch self {
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case .preShoot: 1
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case .preOrder: 2
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}
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}
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}
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/// 相册码弹窗状态。
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struct AlbumCodeState: Sendable, Equatable {
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let albumId: Int
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let albumName: String
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var qrImageUrl: String
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var isLoading: Bool
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var isDownloading: Bool
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}
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private(set) var albums: [TravelAlbum] = []
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private(set) var albumTotal = 0
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private(set) var availableOrders: [TravelAlbumAvailableOrder] = []
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private(set) var isLoading = false
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private(set) var isCreating = false
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private(set) var isCreateSheetVisible = false
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private(set) var albumCodeState: AlbumCodeState?
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var onStateChange: (() -> Void)?
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var onShowMessage: ((String) -> Void)?
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var onCreatedAlbum: ((TravelAlbumCreateResponse) -> Void)?
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private let currentScenicIdProvider: () -> Int
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private let dateProvider: () -> Date
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init(
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currentScenicIdProvider: @escaping () -> Int = { AppStore.shared.currentScenicId },
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dateProvider: @escaping () -> Date = Date.init
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) {
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self.currentScenicIdProvider = currentScenicIdProvider
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self.dateProvider = dateProvider
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}
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/// 重新拉取相册列表。
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func loadAlbums(api: any TravelAlbumServing) async {
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isLoading = true
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notifyStateChange()
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defer {
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isLoading = false
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notifyStateChange()
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}
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do {
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let response = try await api.list(page: 1, pageSize: 20)
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albumTotal = response.total
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albums = response.list
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} catch is CancellationError {
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return
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} catch {
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albums = []
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albumTotal = 0
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onShowMessage?(error.localizedDescription)
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}
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}
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/// 打开创建相册弹窗。
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func openCreateSheet(api: any TravelAlbumServing) async {
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guard !isCreating else { return }
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guard currentScenicIdProvider() > 0 else {
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onShowMessage?("请先选择景区")
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return
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}
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isCreateSheetVisible = true
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notifyStateChange()
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await loadAvailableOrders(api: api)
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}
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/// 关闭创建相册弹窗。
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func dismissCreateSheet() {
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isCreateSheetVisible = false
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notifyStateChange()
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}
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/// 拉取可绑定订单。
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func loadAvailableOrders(api: any TravelAlbumServing) async {
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do {
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availableOrders = try await api.availableOrders()
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notifyStateChange()
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} catch is CancellationError {
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return
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} catch {
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availableOrders = []
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notifyStateChange()
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}
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}
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/// 校验并创建相册任务。
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func confirmCreate(
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mode: CreateMode,
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freeCount: String,
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singlePrice: String,
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packagePrice: String,
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order: TravelAlbumAvailableOrder?,
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api: any TravelAlbumServing
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) async {
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guard !isCreating else { return }
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guard currentScenicIdProvider() > 0 else {
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onShowMessage?("请先选择景区")
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return
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}
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if mode == .preOrder && order == nil {
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onShowMessage?("请选择绑定订单")
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return
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}
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if mode == .preShoot && singlePrice.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty {
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onShowMessage?("请输入单张照片价格")
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return
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}
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let materialPrice = Double(singlePrice)
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if mode == .preShoot && materialPrice == nil {
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onShowMessage?("请输入有效的单张照片价格")
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return
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}
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let albumName: String
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switch mode {
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case .preOrder:
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albumName = order?.projectName.trimmingCharacters(in: .whitespacesAndNewlines).nonEmpty ?? buildTodayAlbumName()
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case .preShoot:
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albumName = buildTodayAlbumName()
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}
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let request: TravelAlbumCreateRequest
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switch mode {
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case .preShoot:
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request = TravelAlbumCreateRequest(
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name: albumName,
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type: mode.apiType,
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orderNumber: nil,
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materialNum: Int(freeCount) ?? 0,
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materialPrice: materialPrice,
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materialPackagePrice: Double(packagePrice) ?? 0,
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photoPrice: 0
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)
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case .preOrder:
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request = TravelAlbumCreateRequest(
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name: albumName,
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type: mode.apiType,
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orderNumber: order?.orderNumber,
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materialNum: nil,
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materialPrice: nil,
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materialPackagePrice: nil,
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photoPrice: nil
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)
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}
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isCreating = true
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notifyStateChange()
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defer {
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isCreating = false
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notifyStateChange()
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}
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do {
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let response = try await api.create(request)
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isCreateSheetVisible = false
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onShowMessage?("任务创建成功")
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onCreatedAlbum?(response)
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await loadAlbums(api: api)
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} catch is CancellationError {
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return
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} catch {
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let message = error.localizedDescription
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if message.contains("订单已关联") {
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onShowMessage?("该订单已关联旅拍相册，请刷新后重新选择")
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await loadAvailableOrders(api: api)
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} else {
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onShowMessage?(message)
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}
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}
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}
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/// 打开相册码弹窗并加载二维码。
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func openAlbumCode(album: TravelAlbum, api: any TravelAlbumServing) async {
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albumCodeState = AlbumCodeState(
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albumId: album.id,
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albumName: album.name,
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qrImageUrl: "",
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isLoading: true,
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isDownloading: false
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)
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notifyStateChange()
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do {
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let response = try await api.mpCode(id: album.id)
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guard albumCodeState?.albumId == album.id else { return }
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albumCodeState?.qrImageUrl = response.mpCodeOssUrl.trimmingCharacters(in: .whitespacesAndNewlines)
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albumCodeState?.isLoading = false
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notifyStateChange()
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} catch is CancellationError {
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return
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} catch {
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guard albumCodeState?.albumId == album.id else { return }
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albumCodeState?.isLoading = false
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notifyStateChange()
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onShowMessage?(error.localizedDescription.isEmpty ? "获取小程序码失败" : error.localizedDescription)
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}
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}
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/// 关闭相册码弹窗。
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func dismissAlbumCode() {
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albumCodeState = nil
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notifyStateChange()
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}
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/// 设置二维码下载状态。
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func setDownloadingQRCode(_ isDownloading: Bool) {
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albumCodeState?.isDownloading = isDownloading
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notifyStateChange()
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}
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/// 生成 Android 同款今日相册名。
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func buildTodayAlbumName() -> String {
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let formatter = DateFormatter()
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formatter.calendar = Calendar(identifier: .gregorian)
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formatter.locale = Locale(identifier: "en_US_POSIX")
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formatter.dateFormat = "yyyy-MM-dd"
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let todayText = formatter.string(from: dateProvider())
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let todayCount = albums.filter { $0.createdAt.hasPrefix(todayText) }.count
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return "\(todayText)-\(String(format: "%03d", todayCount + 1))"
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}
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private func notifyStateChange() {
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onStateChange?()
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}
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}
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private extension String {
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var nonEmpty: String? {
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isEmpty ? nil : self
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}
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}
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