0.10.6
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import Foundation
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import SwiftUI
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#if os(iOS)
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import UIKit
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private typealias DraftThumbnailImage = UIImage
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#elseif os(macOS)
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import AppKit
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private typealias DraftThumbnailImage = NSImage
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#endif
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@MainActor
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struct AttachmentPreviewView: View {
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@ObservedObject var model: AppModel
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let conversation: Conversation
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@Binding var drafts: [AttachmentDraft]
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@Environment(\.dismiss) private var dismiss
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@State private var caption = ""
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@State private var isSending = false
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@State private var sendStatusMessage: String?
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@State private var previewItem: MediaViewerItem?
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@State private var thumbnailImages: [UUID: DraftThumbnailImage] = [:]
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private let columns = [GridItem(.adaptive(minimum: 128, maximum: 190), spacing: 18)]
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var body: some View {
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NavigationStack {
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VStack(spacing: 0) {
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ScrollView {
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LazyVGrid(columns: columns, spacing: 22) {
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ForEach(drafts) { draft in
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draftCard(draft)
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}
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}
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.padding(16)
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}
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Divider()
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VStack(spacing: 10) {
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TextField("Добавить подпись…", text: $caption, axis: .vertical)
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.lineLimit(1...4)
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.textFieldStyle(.plain)
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.padding(.horizontal, 13)
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.padding(.vertical, 10)
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.background(Color.secondary.opacity(0.1), in: RoundedRectangle(cornerRadius: 16))
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.disabled(isSending)
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if let sendStatusMessage {
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Label(sendStatusMessage, systemImage: "arrow.clockwise.circle.fill")
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.font(.caption)
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.foregroundStyle(.red)
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.frame(maxWidth: .infinity, alignment: .leading)
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}
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HStack {
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Text(summary)
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.font(.caption)
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.foregroundStyle(.secondary)
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Spacer()
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Button {
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send()
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} label: {
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Label(isSending ? "Отправка…" : "Отправить", systemImage: "arrow.up.circle.fill")
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.fontWeight(.semibold)
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}
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.buttonStyle(.borderedProminent)
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.disabled(drafts.isEmpty || isSending)
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}
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}
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.padding(14)
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.background(.ultraThinMaterial)
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}
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.navigationTitle("Перед отправкой")
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#if os(iOS)
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.navigationBarTitleDisplayMode(.inline)
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#endif
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.toolbar {
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ToolbarItem(placement: .cancellationAction) {
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Button("Отмена") { cancel() }
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.disabled(isSending)
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}
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}
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}
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#if os(macOS)
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.frame(minWidth: 560, minHeight: 560)
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#endif
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.interactiveDismissDisabled(isSending || previewItem != nil)
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.task(id: drafts.map(\.id)) {
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await cacheDraftThumbnails()
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}
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.overlay {
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if let previewItem {
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MediaViewer(item: previewItem) {
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self.previewItem = nil
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}
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.zIndex(100)
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}
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}
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.onDisappear {
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guard !isSending, !drafts.isEmpty else { return }
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model.discardAttachmentDrafts(drafts)
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drafts = []
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}
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}
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private func draftCard(_ draft: AttachmentDraft) -> some View {
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VStack(alignment: .leading, spacing: 7) {
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ZStack(alignment: .topTrailing) {
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Button {
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presentPreview(for: draft)
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} label: {
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ZStack {
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Color.secondary.opacity(0.1)
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thumbnail(for: draft)
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.padding(6)
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if draft.kind == .video {
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Image(systemName: "play.fill")
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.font(.title3.weight(.bold))
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.foregroundStyle(.white)
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.padding(11)
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.background(.black.opacity(0.45), in: Circle())
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}
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}
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.frame(maxWidth: .infinity)
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.aspectRatio(1, contentMode: .fit)
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.clipShape(RoundedRectangle(cornerRadius: 15, style: .continuous))
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.overlay {
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RoundedRectangle(cornerRadius: 15, style: .continuous)
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.stroke(Color.secondary.opacity(0.13), lineWidth: 1)
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}
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}
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.buttonStyle(.plain)
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.disabled(!canPreview(draft) || isSending)
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.accessibilityLabel("Предпросмотр \(draft.filename)")
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Button {
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remove(draft)
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} label: {
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Image(systemName: "xmark")
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.font(.caption.bold())
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.foregroundStyle(.white)
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.frame(width: 25, height: 25)
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.background(.black.opacity(0.62), in: Circle())
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}
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.buttonStyle(.plain)
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.padding(7)
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.accessibilityLabel("Убрать \(draft.filename)")
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}
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Text(draft.filename)
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.font(.caption.weight(.semibold))
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.lineLimit(1)
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Text(detail(for: draft))
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.font(.caption2)
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.foregroundStyle(.secondary)
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.lineLimit(1)
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}
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.padding(9)
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.background(.background, in: RoundedRectangle(cornerRadius: 19, style: .continuous))
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.overlay {
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RoundedRectangle(cornerRadius: 19, style: .continuous)
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.stroke(Color.secondary.opacity(0.15), lineWidth: 1)
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}
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.shadow(color: .black.opacity(0.045), radius: 5, y: 2)
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}
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@ViewBuilder
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private func thumbnail(for draft: AttachmentDraft) -> some View {
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#if os(iOS)
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if let image = thumbnailImages[draft.id] {
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Image(uiImage: image)
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.resizable()
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.scaledToFit()
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} else {
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filePlaceholder(for: draft)
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}
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#elseif os(macOS)
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if let image = thumbnailImages[draft.id] {
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Image(nsImage: image)
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.resizable()
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.scaledToFit()
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} else {
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filePlaceholder(for: draft)
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}
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#endif
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}
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private func filePlaceholder(for draft: AttachmentDraft) -> some View {
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ZStack {
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LinearGradient(
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colors: [Color.accentColor.opacity(0.18), Color.secondary.opacity(0.08)],
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startPoint: .topLeading,
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endPoint: .bottomTrailing
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)
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Image(systemName: icon(for: draft.kind))
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.font(.system(size: 38, weight: .medium))
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.foregroundStyle(.tint)
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}
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}
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private var summary: String {
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let bytes = drafts.reduce(0) { $0 + $1.byteCount }
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return "\(drafts.count) · \(ByteCountFormatter.string(fromByteCount: Int64(bytes), countStyle: .file))"
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}
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private func detail(for draft: AttachmentDraft) -> String {
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var values = [ByteCountFormatter.string(fromByteCount: Int64(draft.byteCount), countStyle: .file)]
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if let duration = draft.duration {
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let seconds = max(0, Int(duration.rounded()))
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values.insert(String(format: "%d:%02d", seconds / 60, seconds % 60), at: 0)
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}
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return values.joined(separator: " · ")
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}
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private func icon(for kind: ChatMessage.Kind) -> String {
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switch kind {
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case .photo: return "photo.fill"
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case .video: return "video.fill"
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case .audio: return "music.note"
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case .voice: return "waveform"
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case .videoNote: return "video.circle.fill"
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case .attachment: return "doc.fill"
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case .location: return "location.fill"
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case .text, .system: return "doc"
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}
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}
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private func remove(_ draft: AttachmentDraft) {
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model.discardAttachmentDrafts([draft])
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drafts.removeAll { $0.id == draft.id }
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thumbnailImages.removeValue(forKey: draft.id)
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if drafts.isEmpty { dismiss() }
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}
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private func cacheDraftThumbnails() async {
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let retainedIDs = Set(drafts.map(\.id))
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thumbnailImages = thumbnailImages.filter { retainedIDs.contains($0.key) }
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for draft in drafts where thumbnailImages[draft.id] == nil {
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guard let data = draft.thumbnailData,
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let image = DraftThumbnailImage(data: data) else { continue }
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thumbnailImages[draft.id] = image
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await Task.yield()
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}
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}
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private func canPreview(_ draft: AttachmentDraft) -> Bool {
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draft.kind == .photo || draft.kind == .video
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}
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private func presentPreview(for draft: AttachmentDraft) {
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guard canPreview(draft), FileManager.default.fileExists(atPath: draft.url.path) else { return }
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previewItem = MediaViewerItem(
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id: draft.id.uuidString,
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url: draft.url,
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kind: draft.kind,
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title: draft.filename
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)
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}
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private func cancel() {
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model.discardAttachmentDrafts(drafts)
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drafts = []
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dismiss()
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}
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private func send() {
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guard !isSending, !drafts.isEmpty else { return }
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let outgoingDrafts = drafts
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sendStatusMessage = nil
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isSending = true
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Task {
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let result = await model.sendAttachmentBatch(
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outgoingDrafts,
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caption: caption,
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to: conversation.jid
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)
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isSending = false
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if result.failedDrafts.isEmpty {
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drafts = []
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dismiss()
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} else {
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drafts = result.failedDrafts
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if result.sentCount > 0 {
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sendStatusMessage = "Отправлено: \(result.sentCount). Не удалось: \(result.failedDrafts.count). Нажмите «Отправить», чтобы повторить оставшиеся."
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} else {
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sendStatusMessage = "Не удалось отправить. Файлы сохранены здесь — проверьте соединение и повторите попытку."
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}
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}
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}
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}
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}
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