feat: 添加CreateFeed功能及相关视图组件
- 新增CreateFeedView和CreateFeedFeature，支持用户发布图文动态。 - 在FeedView中集成CreateFeedView，允许用户通过加号按钮访问发布界面。 - 实现图片选择和文本输入功能，支持最多9张图片的上传。 - 添加发布API请求模型，处理动态发布逻辑。 - 更新FeedFeature以管理CreateFeedView的显示状态，确保用户体验流畅。 - 完善UI结构分析与执行计划文档，明确开发步骤和技术要点。
This commit is contained in:
edwinQQQ
223
yana/Features/CreateFeedFeature.swift
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223
yana/Features/CreateFeedFeature.swift
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import Foundation
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import ComposableArchitecture
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import SwiftUI
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// 条件导入 PhotosUI (iOS 16.0+)
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#if canImport(PhotosUI)
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import PhotosUI
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#endif
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@Reducer
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struct CreateFeedFeature {
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@ObservableState
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struct State: Equatable {
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var content: String = ""
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var processedImages: [UIImage] = []
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var isLoading: Bool = false
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var errorMessage: String? = nil
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var characterCount: Int = 0
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// iOS 16+ PhotosPicker 支持
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#if canImport(PhotosUI) && swift(>=5.7)
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var selectedImages: [PhotosPickerItem] = []
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#endif
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// iOS 15 UIImagePickerController 支持
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var showingImagePicker: Bool = false
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var canAddMoreImages: Bool {
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processedImages.count < 9
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}
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var canPublish: Bool {
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!content.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty && !isLoading
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}
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}
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enum Action {
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case contentChanged(String)
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case publishButtonTapped
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case publishResponse(Result<PublishDynamicResponse, Error>)
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case clearError
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case dismissView
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// iOS 16+ PhotosPicker Actions
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#if canImport(PhotosUI) && swift(>=5.7)
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case photosPickerItemsChanged([PhotosPickerItem])
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case processPhotosPickerItems([PhotosPickerItem])
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#endif
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// iOS 15 UIImagePickerController Actions
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case showImagePicker
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case hideImagePicker
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case imageSelected(UIImage)
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case removeImage(Int)
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}
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@Dependency(\.apiService) var apiService
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@Dependency(\.dismiss) var dismiss
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var body: some ReducerOf<Self> {
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Reduce { state, action in
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switch action {
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case .contentChanged(let newContent):
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state.content = newContent
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state.characterCount = newContent.count
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return .none
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#if canImport(PhotosUI) && swift(>=5.7)
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case .photosPickerItemsChanged(let items):
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state.selectedImages = items
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return .run { send in
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await send(.processPhotosPickerItems(items))
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}
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case .processPhotosPickerItems(let items):
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return .run { [currentImages = state.processedImages] send in
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var newImages = currentImages
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for item in items {
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if let data = try? await item.loadTransferable(type: Data.self),
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let image = UIImage(data: data) {
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if newImages.count < 9 {
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newImages.append(image)
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}
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}
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}
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await MainActor.run {
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state.processedImages = newImages
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}
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}
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#endif
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case .showImagePicker:
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state.showingImagePicker = true
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return .none
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case .hideImagePicker:
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state.showingImagePicker = false
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return .none
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case .imageSelected(let image):
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if state.processedImages.count < 9 {
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state.processedImages.append(image)
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}
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state.showingImagePicker = false
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return .none
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case .removeImage(let index):
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guard index < state.processedImages.count else { return .none }
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state.processedImages.remove(at: index)
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#if canImport(PhotosUI) && swift(>=5.7)
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if index < state.selectedImages.count {
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state.selectedImages.remove(at: index)
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}
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#endif
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return .none
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case .publishButtonTapped:
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guard state.canPublish else {
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state.errorMessage = "请输入内容"
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return .none
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}
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state.isLoading = true
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state.errorMessage = nil
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let request = PublishDynamicRequest(
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content: state.content.trimmingCharacters(in: .whitespacesAndNewlines),
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images: state.processedImages
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)
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return .run { send in
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do {
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let response = try await apiService.request(request)
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await send(.publishResponse(.success(response)))
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} catch {
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await send(.publishResponse(.failure(error)))
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}
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}
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case .publishResponse(.success(let response)):
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state.isLoading = false
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if response.code == 200 {
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// 发布成功，关闭页面
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return .send(.dismissView)
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} else {
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state.errorMessage = response.message.isEmpty ? "发布失败" : response.message
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return .none
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}
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case .publishResponse(.failure(let error)):
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state.isLoading = false
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state.errorMessage = error.localizedDescription
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return .none
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case .clearError:
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state.errorMessage = nil
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return .none
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case .dismissView:
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return .run { _ in
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await dismiss()
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}
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}
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}
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}
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}
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// MARK: - 发布动态相关模型
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/// 发布动态请求
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struct PublishDynamicRequest: APIRequestProtocol {
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typealias Response = PublishDynamicResponse
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let endpoint: String = "/dynamic/square/publish" // 假设的发布端点
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let method: HTTPMethod = .POST
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let includeBaseParameters: Bool = true
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let queryParameters: [String: String]? = nil
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let timeout: TimeInterval = 30.0
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let content: String
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let images: [UIImage]
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let type: Int // 0: 纯文字, 2: 图片
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init(content: String, images: [UIImage] = []) {
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self.content = content
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self.images = images
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self.type = images.isEmpty ? 0 : 2
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}
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var bodyParameters: [String: Any]? {
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var params: [String: Any] = [
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"content": content,
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"type": type
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]
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// 如果有图片，需要转换为base64或上传到服务器
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if !images.isEmpty {
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let imageData = images.compactMap { image in
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image.jpegData(compressionQuality: 0.8)?.base64EncodedString()
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}
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params["images"] = imageData
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}
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return params
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}
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}
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/// 发布动态响应
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struct PublishDynamicResponse: Codable {
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let code: Int
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let message: String
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let data: PublishDynamicData?
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}
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struct PublishDynamicData: Codable {
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let dynamicId: Int
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let publishTime: Int
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}
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