85 lines
2.8 KiB
Swift
85 lines
2.8 KiB
Swift
import SwiftUI
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struct BrowseView: View {
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let category: ContentCategory
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@Bindable var viewModel: BrowseViewModel
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var body: some View {
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Group {
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if !viewModel.hasData && viewModel.error == nil {
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VStack(spacing: 0) {
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FilterBarView(filter: $viewModel.filter) {
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Task { await viewModel.applyFilter(viewModel.filter) }
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}
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.padding(.vertical, 8)
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ProgressView()
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.frame(maxWidth: .infinity, maxHeight: .infinity)
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}
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} else {
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ScrollView {
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VStack(spacing: 0) {
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FilterBarView(filter: $viewModel.filter) {
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Task { await viewModel.applyFilter(viewModel.filter) }
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}
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.padding(.vertical, 8)
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if let error = viewModel.error {
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errorView(error)
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} else if viewModel.items.isEmpty {
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emptyView
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} else {
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ContentGridView(items: viewModel.items) {
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Task { await viewModel.loadMore() }
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}
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.padding(.horizontal)
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.padding(.top, 8)
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if viewModel.isLoadingMore {
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ProgressView()
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.padding()
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}
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}
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}
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}
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}
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}
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.navigationTitle(category.displayName)
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.navigationDestination(for: ContentItem.self) { item in
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DetailView(item: item)
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}
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.refreshable {
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await viewModel.loadContent()
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}
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.task {
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viewModel.category = category
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await viewModel.loadContentIfNeeded()
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}
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}
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private func errorView(_ message: String) -> some View {
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VStack(spacing: 16) {
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Image(systemName: "exclamationmark.triangle")
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.font(.system(size: 48))
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.foregroundStyle(.secondary)
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Text(message)
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.foregroundStyle(.secondary)
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Button("重试") {
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Task { await viewModel.loadContent() }
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}
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}
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.frame(maxWidth: .infinity, minHeight: 300)
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}
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private var emptyView: some View {
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VStack(spacing: 12) {
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Image(systemName: "film.stack")
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.font(.system(size: 48))
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.foregroundStyle(.secondary)
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Text("暂无内容")
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.foregroundStyle(.secondary)
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}
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.frame(maxWidth: .infinity, minHeight: 300)
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}
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}
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