Aliyun-VOD-Media-Library-Manager/apps/macos/VODManager/Sources/VODManager/Views/VideoListView.swift

import SwiftUI

struct VideoListView: View {
    @State private var videos: [VideoItem] = []
    @State private var selectedVideos: Set<String> = []
    @State private var keyword: String = ""
    @State private var isLoading = false
    @State private var total = 0
    @State private var pageNo = 1
    @State private var pageSize = 10
    @State private var errorMessage: String?
    @State private var showDownloadPanel = false
    @State private var downloadResults: [(video: VideoItem, playInfos: [PlayInfo])] = []

    var body: some View {
        VStack(spacing: 0) {
            HStack(spacing: 12) {
                TextField("搜索标题 / 视频 ID", text: $keyword)
                    .textFieldStyle(.roundedBorder)
                    .frame(minWidth: 200)

                Button("搜索") {
                    pageNo = 1
                    Task { await fetch() }
                }
                .keyboardShortcut(.return, modifiers: [.command])

                Button("重置") {
                    keyword = ""
                    pageNo = 1
                    Task { await fetch() }
                }

                Spacer()

                Button("批量下载") {
                    Task { await prepareDownload() }
                }
                .disabled(selectedVideos.isEmpty || isLoading)

                Button("批量删除") {
                    Task { await batchDelete() }
                }
                .disabled(selectedVideos.isEmpty)
                .buttonStyle(.borderedProminent)
                .tint(.red)
            }
            .padding()

            if let error = errorMessage {
                HStack {
                    Text(error)
                        .foregroundStyle(.red)
                    Button {
                        NSPasteboard.general.clearContents()
                        NSPasteboard.general.setString(error, forType: .string)
                    } label: {
                        Image(systemName: "doc.on.doc")
                    }
                    .buttonStyle(.borderless)
                    .help("复制错误信息")
                    Spacer()
                }
                .padding(.horizontal)
            }

            Table(of: VideoItem.self, selection: $selectedVideos) {
                TableColumn("标题") { video in
                    HStack {
                        AsyncImage(url: video.coverURL.flatMap(URL.init)) { image in
                            image.resizable().scaledToFill()
                        } placeholder: {
                            Color.gray
                        }
                        .frame(width: 60, height: 40)
                        .cornerRadius(4)

                        Text(video.title)
                            .lineLimit(2)
                    }
                }
                .width(min: 200, ideal: 300)

                TableColumn("视频 ID") { video in
                    Text(video.videoId)
                        .font(.caption)
                        .foregroundStyle(.secondary)
                }
                .width(min: 120, ideal: 180)

                TableColumn("时长") { video in
                    Text(formatDuration(video.duration))
                }
                .width(min: 60, ideal: 80)

                TableColumn("大小") { video in
                    Text(formatSize(video.size))
                }
                .width(min: 80, ideal: 100)

                TableColumn("状态") { video in
                    Text(video.status ?? "-")
                }
                .width(min: 60, ideal: 80)

                TableColumn("创建时间") { video in
                    Text(video.creationTime ?? "-")
                }
                .width(min: 120, ideal: 160)
            } rows: {
                ForEach(videos) { video in
                    TableRow(video)
                }
            }
            .frame(minHeight: 300)

            HStack {
                Text("共 \(total) 条，已选 \(selectedVideos.count) 个")
                    .foregroundStyle(.secondary)
                Spacer()
                Button("上一页") {
                    pageNo -= 1
                    Task { await fetch() }
                }
                .disabled(pageNo <= 1)
                Text("第 \(pageNo) 页")
                Button("下一页") {
                    pageNo += 1
                    Task { await fetch() }
                }
                .disabled(pageNo * pageSize >= total)
            }
            .padding()
        }
        .task {
            await fetch()
        }
        .sheet(isPresented: $showDownloadPanel) {
            DownloadPanelView(items: downloadResults)
        }
    }

    private func fetch() async {
        isLoading = true
        errorMessage = nil
        do {
            let response = try await VODClient.shared.searchMedia(
                keyword: keyword.isEmpty ? nil : keyword,
                pageNo: pageNo,
                pageSize: pageSize
            )
            videos = response.videos
            total = response.Total ?? 0
            pageNo = response.PageNo ?? pageNo
            pageSize = response.PageSize ?? pageSize
        } catch {
            errorMessage = "加载失败：\(error.localizedDescription)"
        }
        isLoading = false
    }

    private func batchDelete() async {
        let ids = Array(selectedVideos)
        do {
            try await VODClient.shared.deleteVideos(videoIds: ids)
            selectedVideos.removeAll()
            await fetch()
        } catch {
            errorMessage = "删除失败：\(error.localizedDescription)"
        }
    }

    private func prepareDownload() async {
        isLoading = true
        var results: [(video: VideoItem, playInfos: [PlayInfo])] = []
        for video in videos where selectedVideos.contains(video.videoId) {
            do {
                let response = try await VODClient.shared.getPlayInfo(videoId: video.videoId)
                results.append((video, response.playInfos))
            } catch {
                results.append((video, []))
            }
        }
        downloadResults = results
        showDownloadPanel = true
        isLoading = false
    }

    private func formatDuration(_ seconds: Double?) -> String {
        guard let seconds = seconds else { return "-" }
        let m = Int(seconds) / 60
        let s = Int(seconds) % 60
        return "\(m):\(String(format: "%02d", s))"
    }

    private func formatSize(_ bytes: Int64?) -> String {
        guard let bytes = bytes else { return "-" }
        let units = ["B", "KB", "MB", "GB", "TB"]
        var size = Double(bytes)
        var i = 0
        while size >= 1024 && i < units.count - 1 {
            size /= 1024
            i += 1
        }
        return String(format: "%.2f %@", size, units[i])
    }
}