139 lines
4.3 KiB
Swift
139 lines
4.3 KiB
Swift
//
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// TaskCloudFileSelectionViewModel.swift
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// suixinkan
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//
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// Created by Codex on 2026/6/23.
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//
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import Foundation
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/// 云盘文件类型筛选实体，表示发布任务选择附件时的过滤方式。
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enum TaskCloudFileFilter: Int, CaseIterable, Identifiable {
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case all = 0
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case video = 1
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case image = 2
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var id: Int { rawValue }
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/// 返回筛选项展示文案。
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var title: String {
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switch self {
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case .all:
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"全部"
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case .video:
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"视频"
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case .image:
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"图片"
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}
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}
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}
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/// 云盘文件选择 ViewModel，负责目录浏览、筛选、分页和附件选择。
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@MainActor
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final class TaskCloudFileSelectionViewModel {
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var onChange: (() -> Void)?
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var path: [CloudDriveFile] = [CloudDriveFile(id: 0, name: "云盘")] { didSet { onChange?() } }
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var files: [CloudDriveFile] = [] { didSet { onChange?() } }
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var total = 0 { didSet { onChange?() } }
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var page = 1 { didSet { onChange?() } }
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var searchText = "" { didSet { onChange?() } }
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var selectedFilter: TaskCloudFileFilter = .all { didSet { onChange?() } }
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var selectedFiles: [CloudDriveFile] = [] { didSet { onChange?() } }
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var isLoading = false { didSet { onChange?() } }
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var isLoadingMore = false { didSet { onChange?() } }
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var errorMessage: String? { didSet { onChange?() } }
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private let pageSize = 20
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/// 当前目录 ID。
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var currentFolderId: Int {
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path.last?.id ?? 0
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}
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/// 判断当前目录是否还有下一页。
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var hasMore: Bool {
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files.count < total
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}
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/// 重新加载当前目录第一页。
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func reload(api: any TaskServing) async throws {
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isLoading = true
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errorMessage = nil
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defer { isLoading = false }
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do {
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let payload = try await requestFiles(api: api, page: 1)
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page = 1
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files = payload.list
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total = payload.total
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} catch {
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files = []
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total = 0
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page = 1
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errorMessage = error.localizedDescription
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throw error
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}
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}
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/// 加载当前目录下一页。
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func loadMore(api: any TaskServing) async throws {
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guard hasMore, !isLoadingMore else { return }
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isLoadingMore = true
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defer { isLoadingMore = false }
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let nextPage = page + 1
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let payload = try await requestFiles(api: api, page: nextPage)
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page = nextPage
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total = payload.total
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files.append(contentsOf: payload.list)
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}
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/// 进入指定文件夹并刷新列表。
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func enterFolder(_ folder: CloudDriveFile, api: any TaskServing) async throws {
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guard folder.isFolder else { return }
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path.append(folder)
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try await reload(api: api)
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}
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/// 回到指定面包屑目录并刷新列表。
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func popToFolder(at index: Int, api: any TaskServing) async throws {
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guard path.indices.contains(index) else { return }
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path = Array(path.prefix(index + 1))
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try await reload(api: api)
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}
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/// 切换文件选中状态，文件夹不会被选为附件。
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func toggleSelection(_ file: CloudDriveFile) {
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guard !file.isFolder else { return }
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if let index = selectedFiles.firstIndex(where: { $0.id == file.id }) {
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selectedFiles.remove(at: index)
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} else {
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selectedFiles.append(file)
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}
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}
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/// 判断指定云盘文件是否已选中。
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func isSelected(_ file: CloudDriveFile) -> Bool {
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selectedFiles.contains { $0.id == file.id }
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}
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/// 将当前选中的云盘文件转换为发布任务表单附件。
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func makeSelectionItems() -> [TaskCloudSelectionItem] {
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selectedFiles.map {
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TaskCloudSelectionItem(id: $0.id, fileName: $0.name, fileType: $0.type, remark: "")
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}
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}
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/// 组装并发送云盘文件列表请求。
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private func requestFiles(api: any TaskServing, page: Int) async throws -> ListPayload<CloudDriveFile> {
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try await api.cloudFileList(
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parentFolderId: currentFolderId,
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name: searchText.trimmingCharacters(in: .whitespacesAndNewlines),
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type: selectedFilter.rawValue,
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orderBy: 2,
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page: page,
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pageSize: pageSize
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)
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}
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}
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