690 lines
22 KiB
Swift
690 lines
22 KiB
Swift
import SwiftUI
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/// 主上传视图
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/// 提供媒体选择、预览和上传功能
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@MainActor
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struct MediaUploadView: View {
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// MARK: - 属性
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/// 上传管理器，负责处理上传逻辑
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@StateObject private var uploadManager = MediaUploadManager()
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/// 控制媒体选择器的显示/隐藏
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@State private var showMediaPicker = false
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/// 当前选中的媒体项
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@State private var selectedMedia: MediaType? = nil
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/// 当前选中的媒体索引集合
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@State private var selectedIndices: Set<Int> = []
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// MARK: - 视图主体
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var body: some View {
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VStack(spacing: 0) {
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// 顶部导航栏
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topNavigationBar
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// 上传提示信息
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uploadHintView
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// 主上传区域
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MainUploadArea(
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uploadManager: uploadManager,
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showMediaPicker: $showMediaPicker,
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selectedMedia: $selectedMedia,
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selectedIndices: $selectedIndices
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)
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.padding()
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.id("mainUploadArea\(uploadManager.selectedMedia.count)")
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Spacer()
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// 继续按钮
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continueButton
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.padding(.bottom, 24)
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}
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.background(Color.themeTextWhiteSecondary)
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.navigationBarTitleDisplayMode(.inline)
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.navigationBarBackButtonHidden(true)
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.sheet(isPresented: $showMediaPicker) {
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// 媒体选择器
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mediaPickerView
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}
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.onChange(of: uploadManager.selectedMedia) { [oldMedia = uploadManager.selectedMedia] newMedia in
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handleMediaChange(newMedia, oldMedia: oldMedia)
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}
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}
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// MARK: - 子视图
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/// 顶部导航栏
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private var topNavigationBar: some View {
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HStack {
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// 返回按钮
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Button(action: { Router.shared.pop() }) {
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Image(systemName: "chevron.left")
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.font(.system(size: 17, weight: .semibold))
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.foregroundColor(.themeTextMessageMain)
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}
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.padding(.leading, 16)
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Spacer()
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// 标题
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Text("Complete Your Profile")
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.font(Typography.font(for: .title2, family: .quicksandBold))
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.foregroundColor(.themeTextMessageMain)
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Spacer()
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// 右侧占位视图（保持布局平衡）
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Color.clear
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.frame(width: 24, height: 24)
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.padding(.trailing, 16)
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}
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.background(Color.themeTextWhiteSecondary)
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.padding(.horizontal)
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.zIndex(1) // 确保导航栏显示在最上层
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}
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/// 上传提示视图
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private var uploadHintView: some View {
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HStack {
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Text("The upload process will take approximately 2 minutes. Thank you for your patience.")
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.font(.caption)
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.foregroundColor(.black)
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.frame(maxWidth: .infinity, alignment: .leading)
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.padding(12)
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.background(
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LinearGradient(
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gradient: Gradient(colors: [
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Color(red: 1.0, green: 0.97, blue: 0.87),
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.white,
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Color(red: 1.0, green: 0.97, blue: 0.84)
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]),
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startPoint: .topLeading,
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endPoint: .bottomTrailing
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)
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.cornerRadius(8)
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)
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.padding(.horizontal)
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}
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.padding(.vertical, 8)
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}
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/// 继续按钮
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private var continueButton: some View {
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Button(action: {
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// 处理继续操作
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// Router.shared.navigate(to: .avatarBox)
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}) {
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Text("Continue")
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.font(.headline)
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.foregroundColor(uploadManager.selectedMedia.isEmpty ? Color.themeTextMessage : Color.themeTextMessageMain)
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.frame(maxWidth: .infinity)
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.frame(height: 56)
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.background(uploadManager.selectedMedia.isEmpty ? Color.white : Color.themePrimary)
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.cornerRadius(28)
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.padding(.horizontal, 24)
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}
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.buttonStyle(PlainButtonStyle())
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.disabled(uploadManager.selectedMedia.isEmpty)
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}
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/// 媒体选择器视图
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private var mediaPickerView: some View {
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MediaPicker(
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selectedMedia: $uploadManager.selectedMedia,
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imageSelectionLimit: 20,
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videoSelectionLimit: 5,
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onDismiss: handleMediaPickerDismiss,
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onUploadProgress: { index, progress in
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print("文件 \(index) 上传进度: \(progress * 100)%")
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}
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)
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}
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// MARK: - 私有方法
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/// 处理媒体选择器关闭事件
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private func handleMediaPickerDismiss() {
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showMediaPicker = false
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print("媒体选择器关闭 - 开始处理")
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// 如果有选中的媒体，开始上传
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if !uploadManager.selectedMedia.isEmpty {
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uploadManager.startUpload()
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}
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}
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/// 处理媒体变化
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/// - Parameters:
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/// - newMedia: 新的媒体数组
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/// - oldMedia: 旧的媒体数组
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private func handleMediaChange(_ newMedia: [MediaType], oldMedia: [MediaType]) {
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print("开始处理媒体变化，新数量: \(newMedia.count), 原数量: \(oldMedia.count)")
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// 如果没有变化，直接返回
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guard newMedia != oldMedia else {
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print("媒体未发生变化，跳过处理")
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return
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}
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// 在后台线程处理媒体变化
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DispatchQueue.global(qos: .userInitiated).async {
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let startTime = Date()
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// 找出新增的媒体（在newMedia中但不在oldMedia中的项）
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let newItems = newMedia.filter { newItem in
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!oldMedia.contains { $0.id == newItem.id }
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}
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print("检测到\(newItems.count)个新增媒体项")
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// 如果有新增媒体
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if !newItems.isEmpty {
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print("准备添加\(newItems.count)个新项...")
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// 回到主线程更新UI状态
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DispatchQueue.main.async {
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// 如果当前没有选中的媒体，则选中第一个新增的媒体
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if self.selectedIndices.isEmpty && !newItems.isEmpty {
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self.selectedIndices = [self.uploadManager.selectedMedia.count] // 选择第一个新增项的索引
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self.selectedMedia = newItems.first
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}
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// 开始上传新添加的媒体
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self.uploadManager.startUpload()
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print("媒体添加完成，总数量: \(self.uploadManager.selectedMedia.count)")
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}
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} else if newMedia.isEmpty {
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// 清空选择
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DispatchQueue.main.async {
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self.selectedIndices = []
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self.selectedMedia = nil
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print("媒体已清空，重置选择状态")
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}
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}
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print("媒体变化处理完成，总耗时: \(String(format: "%.3f", Date().timeIntervalSince(startTime)))s")
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}
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}
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/// 检查是否有正在上传的文件
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/// - Returns: 是否正在上传
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private func isUploading() -> Bool {
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return uploadManager.uploadStatus.values.contains { status in
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if case .uploading = status { return true }
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return false
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}
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}
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}
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// MARK: - 主上传区域
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/// 主上传区域视图
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/// 显示上传提示、媒体预览和添加更多按钮
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struct MainUploadArea: View {
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// MARK: - 属性
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/// 上传管理器
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@ObservedObject var uploadManager: MediaUploadManager
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/// 控制媒体选择器的显示/隐藏
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@Binding var showMediaPicker: Bool
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/// 当前选中的媒体
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@Binding var selectedMedia: MediaType?
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/// 当前选中的媒体索引
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@Binding var selectedIndices: Set<Int>
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// MARK: - 视图主体
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var body: some View {
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VStack(spacing: 16) {
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// 标题
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Text("Click to upload 20 images and 5 videos to generate your next blind box.")
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.font(Typography.font(for: .title2, family: .quicksandBold))
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.fontWeight(.bold)
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.foregroundColor(.black)
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.multilineTextAlignment(.center)
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.padding(.horizontal)
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// 上传提示视图
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UploadPromptView(showMediaPicker: $showMediaPicker)
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// 媒体预览区域
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mediaPreviewSection
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// 当没有选择媒体时显示添加更多按钮
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if !uploadManager.selectedMedia.isEmpty {
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addMoreButton
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}
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}
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.background(Color.white)
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.cornerRadius(16)
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.shadow(radius: 2)
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}
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// MARK: - 子视图
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/// 媒体预览区域
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private var mediaPreviewSection: some View {
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Group {
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if !uploadManager.selectedMedia.isEmpty {
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VStack(spacing: 8) {
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// 已选择文件数量
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Text("已选择 \(uploadManager.selectedMedia.count) 个文件")
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.font(.subheadline)
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.foregroundColor(.gray)
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// 横向滚动的缩略图列表
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ScrollView(.horizontal, showsIndicators: false) {
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LazyHStack(spacing: 10) {
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ForEach(Array(uploadManager.selectedMedia.enumerated()), id: \.element.id) { index, media in
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mediaItemView(for: media, at: index)
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}
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}
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.padding(.horizontal)
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}
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.frame(height: 140)
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}
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.padding(.vertical, 8)
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}
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}
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}
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/// 单个媒体项视图
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/// - Parameters:
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/// - media: 媒体项
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/// - index: 索引
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/// - Returns: 媒体项视图
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private func mediaItemView(for media: MediaType, at index: Int) -> some View {
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VStack(spacing: 4) {
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// 媒体预览
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MediaPreview(media: media, uploadManager: uploadManager)
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.frame(width: 80, height: 80)
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.cornerRadius(8)
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.shadow(radius: 1)
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.onTapGesture {
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// 更新选中的媒体
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selectedIndices = [index]
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selectedMedia = media
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}
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// 上传状态指示器
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uploadStatusView(for: index)
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}
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.padding(4)
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}
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/// 上传状态视图
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/// - Parameter index: 媒体索引
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/// - Returns: 状态视图
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@ViewBuilder
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private func uploadStatusView(for index: Int) -> some View {
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if let status = uploadManager.uploadStatus["\(index)"] {
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switch status {
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case .uploading(let progress):
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// 上传中，显示进度条
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VStack(alignment: .center, spacing: 2) {
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Text("\(Int(progress * 100))%")
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.font(.caption2)
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.foregroundColor(.gray)
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ProgressView(value: progress, total: 1.0)
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.progressViewStyle(LinearProgressViewStyle())
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.frame(height: 3)
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.tint(Color.themePrimary)
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}
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.frame(width: 60)
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case .completed:
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// 上传完成，显示完成图标
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Image(systemName: "checkmark.circle.fill")
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.font(.caption)
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.foregroundColor(.green)
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case .failed:
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// 上传失败，显示错误图标
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Image(systemName: "exclamationmark.triangle.fill")
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.font(.caption)
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.foregroundColor(.red)
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default:
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EmptyView()
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}
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}
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}
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/// 添加更多按钮
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private var addMoreButton: some View {
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Button(action: { showMediaPicker = true }) {
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VStack(spacing: 8) {
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Image(systemName: "plus.circle.fill")
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.font(.system(size: 30))
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.foregroundColor(.themePrimary)
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Text("Add More")
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.font(.subheadline)
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.foregroundColor(.gray)
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}
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.frame(width: 80, height: 80)
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.background(Color.gray.opacity(0.1))
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.cornerRadius(8)
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.overlay(
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RoundedRectangle(cornerRadius: 8)
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.strokeBorder(style: StrokeStyle(
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lineWidth: 2,
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dash: [8, 4]
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))
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.foregroundColor(.gray.opacity(0.5))
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)
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.padding(4)
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}
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}
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}
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// MARK: - 上传提示视图
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/// 上传提示视图
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/// 显示上传区域的占位图和提示
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struct UploadPromptView: View {
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/// 控制媒体选择器的显示/隐藏
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@Binding var showMediaPicker: Bool
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var body: some View {
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Button(action: { showMediaPicker = true }) {
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// 上传图标
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SVGImage(svgName: "IP")
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.frame(width: 225, height: 225)
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.contentShape(Rectangle())
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.overlay(
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RoundedRectangle(cornerRadius: 20)
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.stroke(style: StrokeStyle(
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lineWidth: 5,
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lineCap: .round,
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dash: [12, 8]
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))
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.foregroundColor(Color.themePrimary)
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)
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}
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}
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}
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// MARK: - 媒体预览视图
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/// 媒体预览视图
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/// 显示图片或视频的预览图
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struct MediaPreview: View {
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// MARK: - 属性
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/// 图片处理队列
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private let imageProcessingQueue = DispatchQueue(
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label: "com.yourapp.imageprocessing",
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qos: .userInitiated,
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attributes: .concurrent
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)
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/// 媒体类型
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let media: MediaType
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/// 上传管理器
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@ObservedObject var uploadManager: MediaUploadManager
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// MARK: - 状态
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/// 加载的图片
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@State private var image: UIImage?
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/// 加载状态
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enum LoadState {
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/// 加载成功
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case success(UIImage)
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/// 加载失败
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case failure(Error)
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}
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/// 当前加载状态
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@State private var loadState: LoadState?
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// MARK: - 图片缓存
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/// 图片缓存
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private struct ImageCache {
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static let shared = NSCache<NSString, UIImage>()
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}
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// MARK: - 计算属性
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/// 上传进度
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private var uploadProgress: Double {
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guard let index = uploadManager.selectedMedia.firstIndex(where: { $0.id == media.id }) else {
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return 0
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}
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if case .uploading(let progress) = uploadManager.uploadStatus["\(index)"] {
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return progress
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} else if case .completed = uploadManager.uploadStatus["\(index)"] {
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return 1.0
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}
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return 0
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}
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/// 是否正在上传
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private var isUploading: Bool {
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guard let index = uploadManager.selectedMedia.firstIndex(where: { $0.id == media.id }) else {
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return false
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}
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if case .uploading = uploadManager.uploadStatus["\(index)"] {
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return true
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}
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return false
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}
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// MARK: - 视图主体
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var body: some View {
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ZStack {
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// 显示图片或错误状态
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if let image = image {
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loadedImageView(image)
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// 视频播放按钮
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if case .video = media {
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playButton
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}
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// 上传进度指示器（仅在上传时显示）
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if isUploading || uploadProgress > 0 {
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loadingOverlay
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}
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} else if case .failure(let error) = loadState {
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// 加载失败状态
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errorView(error: error)
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} else {
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// 初始加载时显示占位图
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placeholderView
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.onAppear {
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loadImage()
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}
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}
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}
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.aspectRatio(1, contentMode: .fill)
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.clipped()
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.cornerRadius(8)
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.overlay(
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RoundedRectangle(cornerRadius: 8)
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.stroke(Color.themePrimary.opacity(0.3), lineWidth: 1)
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)
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}
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// MARK: - 子视图
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/// 加载中的占位图
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private var placeholderView: some View {
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Color.gray.opacity(0.1)
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.overlay(
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ProgressView()
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.progressViewStyle(CircularProgressViewStyle())
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)
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}
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/// 加载完成的图片视图
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private func loadedImageView(_ image: UIImage) -> some View {
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Image(uiImage: image)
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.resizable()
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.scaledToFill()
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.transition(.opacity.animation(.easeInOut(duration: 0.2)))
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}
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/// 播放按钮
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private var playButton: some View {
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Image(systemName: "play.circle.fill")
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||
.font(.system(size: 24))
|
||
.foregroundColor(.white)
|
||
.shadow(radius: 4)
|
||
}
|
||
|
||
/// 错误视图
|
||
private func errorView(error: Error) -> some View {
|
||
VStack(spacing: 8) {
|
||
Image(systemName: "exclamationmark.triangle")
|
||
.font(.system(size: 20))
|
||
.foregroundColor(.orange)
|
||
|
||
Text("加载失败")
|
||
.font(.caption2)
|
||
.foregroundColor(.secondary)
|
||
|
||
Button(action: {
|
||
loadState = nil
|
||
loadImage()
|
||
}) {
|
||
Image(systemName: "arrow.clockwise")
|
||
.font(.caption)
|
||
.padding(4)
|
||
.background(Color.gray.opacity(0.2))
|
||
.clipShape(Circle())
|
||
}
|
||
.padding(.top, 4)
|
||
}
|
||
.frame(maxWidth: .infinity, maxHeight: .infinity)
|
||
.background(Color.gray.opacity(0.1))
|
||
.cornerRadius(8)
|
||
}
|
||
|
||
/// 上传进度遮罩
|
||
private var loadingOverlay: some View {
|
||
ZStack {
|
||
// 半透明黑色背景
|
||
Color.black.opacity(0.3)
|
||
|
||
// 进度条
|
||
VStack {
|
||
Spacer()
|
||
|
||
// 圆形进度指示器
|
||
ZStack {
|
||
Circle()
|
||
.stroke(
|
||
Color.white.opacity(0.3),
|
||
lineWidth: 4
|
||
)
|
||
|
||
Circle()
|
||
.trim(from: 0.0, to: uploadProgress)
|
||
.stroke(
|
||
Color.white,
|
||
style: StrokeStyle(
|
||
lineWidth: 4,
|
||
lineCap: .round
|
||
)
|
||
)
|
||
.rotationEffect(.degrees(-90))
|
||
|
||
Text("\(Int(uploadProgress * 100))%")
|
||
.font(.system(size: 12, weight: .bold))
|
||
.foregroundColor(.white)
|
||
}
|
||
.frame(width: 40, height: 40)
|
||
.padding(.bottom, 8)
|
||
}
|
||
}
|
||
.cornerRadius(8)
|
||
}
|
||
|
||
// MARK: - 私有方法
|
||
|
||
/// 加载图片
|
||
private func loadImage() {
|
||
let cacheKey = "\(media.id)" as NSString
|
||
|
||
// 检查缓存
|
||
if let cachedImage = ImageCache.shared.object(forKey: cacheKey) {
|
||
self.image = cachedImage
|
||
self.loadState = .success(cachedImage)
|
||
return
|
||
}
|
||
|
||
// 使用专用的图片处理队列
|
||
imageProcessingQueue.async {
|
||
do {
|
||
let imageToCache: UIImage
|
||
|
||
switch self.media {
|
||
case .image(let uiImage):
|
||
imageToCache = uiImage
|
||
|
||
case .video(_, let thumbnail):
|
||
guard let thumbnail = thumbnail else {
|
||
throw NSError(
|
||
domain: "com.yourapp.media",
|
||
code: -1,
|
||
userInfo: [NSLocalizedDescriptionKey: "视频缩略图加载失败"]
|
||
)
|
||
}
|
||
imageToCache = thumbnail
|
||
}
|
||
|
||
// 缓存图片
|
||
ImageCache.shared.setObject(imageToCache, forKey: cacheKey)
|
||
|
||
// 更新UI
|
||
DispatchQueue.main.async {
|
||
withAnimation(.easeInOut(duration: 0.2)) {
|
||
self.image = imageToCache
|
||
self.loadState = .success(imageToCache)
|
||
}
|
||
}
|
||
|
||
} catch {
|
||
print("图片加载失败: \(error.localizedDescription)")
|
||
DispatchQueue.main.async {
|
||
self.loadState = .failure(error)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// MARK: - 扩展
|
||
|
||
/// 扩展 MediaType 以支持 Identifiable 协议
|
||
extension MediaType: Identifiable {
|
||
/// 唯一标识符
|
||
public var id: String {
|
||
switch self {
|
||
case .image(let uiImage):
|
||
return "image_\(uiImage.hashValue)"
|
||
case .video(let url, _):
|
||
return "video_\(url.absoluteString)"
|
||
}
|
||
}
|
||
}
|
||
|
||
// MARK: - 预览
|
||
|
||
struct MediaUploadView_Previews: PreviewProvider {
|
||
static var previews: some View {
|
||
NavigationView {
|
||
MediaUploadView()
|
||
}
|
||
}
|
||
}
|