feat: redesign Dynamic Island with phase-driven UI and animations

tabatago-swift/TabataGo/Models/WorkoutActivityAttributes.swift

@@ -1,10 +1,19 @@
 import ActivityKit
 import Foundation
+import AppIntents
 
 #if canImport(SwiftUI)
 import SwiftUI
 #endif
 
+// MARK: — Shared notification names (used by LiveActivityIntent + PlayerView)
+
+extension Notification.Name {
+    static let togglePauseFromActivity = Notification.Name("togglePauseFromActivity")
+}
+
+// MARK: — Phase enum
+
 enum WorkoutPhase: String, Codable, Hashable, Sendable, CaseIterable {
     case prep
     case warmup
@@ -32,9 +41,49 @@ enum WorkoutPhase: String, Codable, Hashable, Sendable, CaseIterable {
         case .complete: return Color(red: 0.19, green: 0.82, blue: 0.35)
         }
     }
+
+    var dimColor: Color {
+        color.opacity(0.3)
+    }
+
+    var glowColor: Color {
+        color.opacity(0.5)
+    }
+
+    var gradientStops: [Gradient.Stop] {
+        switch self {
+        case .work:
+            return [
+                .init(color: Color(red: 1.0, green: 0.42, blue: 0.21).opacity(0.15), location: 0),
+                .init(color: .clear, location: 1),
+            ]
+        case .rest, .interBlockRest:
+            return [
+                .init(color: Color(red: 0.35, green: 0.78, blue: 0.98).opacity(0.12), location: 0),
+                .init(color: .clear, location: 1),
+            ]
+        case .prep, .warmup:
+            return [
+                .init(color: Color(red: 1.0, green: 0.58, blue: 0.0).opacity(0.12), location: 0),
+                .init(color: .clear, location: 1),
+            ]
+        case .cooldown:
+            return [
+                .init(color: Color(red: 0.35, green: 0.78, blue: 0.98).opacity(0.08), location: 0),
+                .init(color: .clear, location: 1),
+            ]
+        case .complete:
+            return [
+                .init(color: Color(red: 0.19, green: 0.82, blue: 0.35).opacity(0.15), location: 0),
+                .init(color: .clear, location: 1),
+            ]
+        }
+    }
     #endif
 }
 
+// MARK: — Activity Attributes
+
 struct WorkoutActivityAttributes: ActivityAttributes {
     public struct ContentState: Codable, Hashable, Sendable {
         var exerciseName: String
@@ -48,5 +97,47 @@ struct WorkoutActivityAttributes: ActivityAttributes {
         var trackArtist: String
         var isPlaying: Bool
         var isPaused: Bool
+        var blockIndex: Int = 0
+        var blockCount: Int = 0
+        var exerciseShortName: String = ""
+        var phaseElapsedSeconds: TimeInterval = 0
+    }
+}
+
+// MARK: — Concurrency-safe throttle
+
+private actor TogglePauseThrottle {
+    private var lastFireTime: Date = .distantPast
+
+    func shouldFire() -> Bool {
+        let now = Date()
+        guard now.timeIntervalSince(lastFireTime) > 3.0 else { return false }
+        lastFireTime = now
+        return true
+    }
+}
+
+// MARK: — Live Activity Intents (run in the main app process)
+
+struct TogglePauseIntent: LiveActivityIntent {
+
+    static let title: LocalizedStringResource = "Toggle Pause"
+    private static let throttle = TogglePauseThrottle()
+
+    @MainActor
+    func perform() async throws -> some IntentResult {
+        guard await Self.throttle.shouldFire() else {
+            print("[LiveActivityIntent] TogglePauseIntent throttled")
+            return .result()
+        }
+
+        print("[LiveActivityIntent] TogglePauseIntent.perform() fired")
+
+        NotificationCenter.default.post(name: .togglePauseFromActivity, object: nil)
+
+        // Small sleep keeps widget button in a "processing" visual state
+        try await Task.sleep(for: .milliseconds(400))
+
+        return .result()
     }
 }