266 lines
9.8 KiB
Swift
266 lines
9.8 KiB
Swift
//
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// TravelAlbumAIRetouchTemplateViewModel.swift
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// suixinkan
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//
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import Foundation
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/// AI 修图模板选择状态，负责实时加载、按工作流单选、校验和任务提交。
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final class TravelAlbumAIRetouchTemplateViewModel {
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private(set) var refinedTemplates: [TravelAlbumAIRetouchTemplate] = []
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private(set) var atmosphereTemplates: [TravelAlbumAIRetouchTemplate] = []
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private(set) var coverTemplates: [TravelAlbumAIRetouchTemplate] = []
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private(set) var selectedRefinedTemplateId: Int?
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private(set) var selectedAtmosphereTemplateId: Int?
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private(set) var selectedCoverTemplateId: Int?
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private(set) var remainingQuota: Int?
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private(set) var isLoading = false
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private(set) var isSubmitting = false
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private(set) var loadErrorMessage: String?
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let scenicId: Int
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let workflow: TravelAlbumAIRetouchWorkflow
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var onStateChange: (() -> Void)?
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var onShowMessage: ((String) -> Void)?
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var onSubmitted: (() -> Void)?
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/// 创建首次 AI 修图模板状态；素材 ID 会排序并去重，确保提交稳定。
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convenience init(albumId: Int, scenicId: Int, materialIds: [Int]) {
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self.init(
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scenicId: scenicId,
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workflow: .initial(albumId: albumId, materialIds: materialIds)
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)
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}
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/// 使用明确工作流创建模板选择状态。
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init(scenicId: Int, workflow: TravelAlbumAIRetouchWorkflow) {
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self.scenicId = scenicId
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switch workflow {
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case .initial(let albumId, let materialIds):
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self.workflow = .initial(
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albumId: albumId,
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materialIds: Array(Set(materialIds)).sorted()
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)
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case .reretouch:
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self.workflow = workflow
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}
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}
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/// 当前工作流需要展示的模板分组。
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var visibleCategories: [TravelAlbumAIRetouchTemplateCategory] {
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workflow.visibleCategories
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}
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/// 当前工作流选择的原始照片数量。
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var selectedPhotoCount: Int {
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switch workflow {
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case .initial(_, let materialIds): materialIds.count
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case .reretouch: 1
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}
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}
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/// 是否展示首次修图的氛围感与封面生成说明。
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var shouldShowInitialTips: Bool {
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if case .initial = workflow { return true }
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return false
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}
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/// 首次修图页固定展示的氛围感与封面生成规则说明。
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var initialTipsText: String {
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"Tips：氛围感修图为选填，可横向选择一种样式；选中后每张照片会额外生成1个独立结果，第一张照片仍另生成封面。"
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}
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/// 当前分组是否为选填。
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func isOptional(_ category: TravelAlbumAIRetouchTemplateCategory) -> Bool {
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workflow.isOptional(category)
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}
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/// 当前选择预计消耗的修图次数；封面模板免费，不计入额度。
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var requiredQuota: Int {
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switch workflow {
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case .initial(_, let materialIds):
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let outputCount = 1 + (selectedAtmosphereTemplateId == nil ? 0 : 1)
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return materialIds.count * outputCount
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case .reretouch(_, _, let type):
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switch type {
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case .refined, .atmosphere:
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return 1
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case .all:
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return 1 + (selectedAtmosphereTemplateId == nil ? 0 : 1)
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}
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}
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}
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/// 当前必选模板或业务参数缺失时用于底部提示的文案。
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var validationMessage: String? {
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guard !isLoading, loadErrorMessage == nil else { return nil }
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guard workflow.isValid else {
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if case .reretouch = workflow {
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return "当前图片缺少修图批次，请刷新后重试"
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}
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return "请选择要修图的照片"
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}
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for category in visibleCategories where !isOptional(category) {
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if templates(for: category).isEmpty || selectedTemplateId(for: category) == nil {
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return unavailableMessage(for: category)
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}
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}
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guard let remainingQuota else {
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return "剩余修图次数获取失败，请刷新后重试"
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}
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if requiredQuota > remainingQuota {
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return "剩余修图次数不足，需要\(requiredQuota)次，当前剩余\(remainingQuota)次"
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}
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return nil
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}
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/// 是否满足提交条件。
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var canSubmit: Bool {
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!isLoading
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&& !isSubmitting
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&& loadErrorMessage == nil
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&& workflow.isValid
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&& validationMessage == nil
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}
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/// 实时拉取当前景区模板并按工作流设置默认选择。
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func loadTemplates(api: any TravelAlbumServing) async {
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guard scenicId > 0 else {
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loadErrorMessage = "请先选择景区"
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notifyStateChange()
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return
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}
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guard !isLoading else { return }
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isLoading = true
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loadErrorMessage = nil
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remainingQuota = nil
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notifyStateChange()
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do {
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let response = try await api.aiRetouchTemplates(scenicId: scenicId)
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refinedTemplates = response.refinedTemplates
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atmosphereTemplates = response.atmosphereTemplates
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coverTemplates = response.coverTemplates
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remainingQuota = response.remainingQuota
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selectedRefinedTemplateId = visibleCategories.contains(.refined) ? refinedTemplates.first?.id : nil
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selectedAtmosphereTemplateId = visibleCategories.contains(.atmosphere) && !isOptional(.atmosphere)
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? atmosphereTemplates.first?.id
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: nil
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selectedCoverTemplateId = visibleCategories.contains(.cover) ? coverTemplates.first?.id : nil
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isLoading = false
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notifyStateChange()
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} catch is CancellationError {
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isLoading = false
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notifyStateChange()
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} catch {
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refinedTemplates = []
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atmosphereTemplates = []
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coverTemplates = []
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selectedRefinedTemplateId = nil
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selectedAtmosphereTemplateId = nil
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selectedCoverTemplateId = nil
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remainingQuota = nil
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isLoading = false
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loadErrorMessage = error.localizedDescription.isEmpty ? "模板加载失败" : error.localizedDescription
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notifyStateChange()
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}
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}
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/// 返回指定分组的模板。
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func templates(for category: TravelAlbumAIRetouchTemplateCategory) -> [TravelAlbumAIRetouchTemplate] {
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switch category {
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case .refined: refinedTemplates
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case .atmosphere: atmosphereTemplates
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case .cover: coverTemplates
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}
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}
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/// 返回指定分组当前选中的模板 ID。
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func selectedTemplateId(for category: TravelAlbumAIRetouchTemplateCategory) -> Int? {
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switch category {
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case .refined: selectedRefinedTemplateId
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case .atmosphere: selectedAtmosphereTemplateId
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case .cover: selectedCoverTemplateId
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}
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}
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/// 选择模板；仅选填分组允许再次点击取消，必选分组保持单选。
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func toggleTemplate(id: Int, category: TravelAlbumAIRetouchTemplateCategory) {
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guard visibleCategories.contains(category),
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templates(for: category).contains(where: { $0.id == id })
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else { return }
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switch category {
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case .refined:
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selectedRefinedTemplateId = id
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case .atmosphere:
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selectedAtmosphereTemplateId = isOptional(category) && selectedAtmosphereTemplateId == id ? nil : id
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case .cover:
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selectedCoverTemplateId = id
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}
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notifyStateChange()
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}
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/// 按当前工作流提交首次修图或覆盖重修任务。
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func submit(api: any TravelAlbumServing) async {
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guard !isSubmitting else { return }
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guard canSubmit else {
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onShowMessage?(validationMessage ?? "当前无法提交AI修图")
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return
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}
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isSubmitting = true
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notifyStateChange()
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defer {
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isSubmitting = false
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notifyStateChange()
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}
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do {
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switch workflow {
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case .initial(let albumId, let materialIds):
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guard let refinedTemplateId = selectedRefinedTemplateId else {
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onShowMessage?("请选择原图精修模板")
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return
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}
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try await api.submitAIRetouch(
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TravelAlbumAIRetouchRequest(
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userEquityTravelId: albumId,
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materialIds: materialIds,
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refinedTemplateId: refinedTemplateId,
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atmosphereTemplateId: selectedAtmosphereTemplateId,
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coverTemplateId: selectedCoverTemplateId
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)
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)
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case .reretouch(let materialId, let batchId, let type):
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try await api.submitAIReretouch(
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TravelAlbumAIReretouchRequest(
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id: materialId,
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aiRetouchBatchId: batchId,
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type: type,
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refinedTemplateId: type == .atmosphere ? nil : selectedRefinedTemplateId,
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atmosphereTemplateId: type == .refined ? nil : selectedAtmosphereTemplateId
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)
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)
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}
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onSubmitted?()
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} catch is CancellationError {
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return
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} catch {
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onShowMessage?(error.localizedDescription.isEmpty ? "AI修图任务提交失败" : error.localizedDescription)
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}
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}
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private func unavailableMessage(for category: TravelAlbumAIRetouchTemplateCategory) -> String {
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switch category {
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case .refined: "暂无可用的原图精修模板"
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case .atmosphere: "暂无可用的氛围感修图模板"
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case .cover: "暂无可用的封面风格模板"
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}
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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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