Control PC playback through interactive Live Activity intents

Shared/MusicActivityViews.swift

@@ -1,8 +1,10 @@
 import SwiftUI
+import AppIntents
 
 struct MusicActivityCard: View {
     let state: MusicActivityAttributes.ContentState
     let stale: Bool
+    var activityID: String = ""
     var body: some View {
         VStack(alignment: .leading, spacing: 10) {
             HStack(spacing: 12) {
@@ -14,7 +16,7 @@ struct MusicActivityCard: View {
             }
             ProgressView(value: state.progress).tint(.indigo)
             ActivityStatus(state: state, stale: stale)
-            Label("Открыть плеер", systemImage: "arrow.up.forward.app").font(.caption.weight(.semibold))
+            MusicActivityControls(activityID: activityID)
         }.padding(16)
     }
 }
@@ -34,13 +36,35 @@ struct ActivityStatus: View {
     let state: MusicActivityAttributes.ContentState
     let stale: Bool
     var body: some View {
-        if stale || !state.connected {
-            Text("Данные устарели · откройте плеер").font(.caption).foregroundStyle(.secondary)
+        if let message = state.message {
+            Text(message).font(.caption).lineLimit(2)
+        } else if !state.connected {
+            Text("Нет связи с ПК · нажмите обновление").font(.caption).foregroundStyle(.secondary)
         } else {
             HStack(spacing: 4) {
-                Text("Снимок с ПК в")
+                Text("Обновлено в")
                 Text(state.updatedAt, style: .time)
             }.font(.caption).foregroundStyle(.secondary)
         }
     }
 }
+
+struct MusicActivityControls: View {
+    let activityID: String
+    var body: some View {
+        HStack {
+            control(.previous, icon: "backward.end.fill", label: "Предыдущий трек")
+            Spacer(minLength: 4)
+            control(.toggle, icon: "playpause.fill", label: "Воспроизведение или пауза")
+            Spacer(minLength: 4)
+            control(.next, icon: "forward.end.fill", label: "Следующий трек")
+            Spacer(minLength: 4)
+            control(.refresh, icon: "arrow.clockwise", label: "Обновить трек")
+        }
+    }
+    private func control(_ action: MusicRemoteAction, icon: String, label: String) -> some View {
+        Button(intent: MusicControlIntent(action, activityID: activityID)) {
+            Image(systemName: icon).font(.title3).frame(minWidth: 44, minHeight: 44)
+        }.buttonStyle(.plain).accessibilityLabel(label).disabled(activityID.isEmpty)
+    }
+}