Yattee v2 rewrite

Yattee/Services/SleepPreventionService.swift

@@ -0,0 +1,64 @@
+//
+//  SleepPreventionService.swift
+//  Yattee
+//
+//  Service to prevent system sleep during video playback.
+//
+
+import Foundation
+
+#if canImport(UIKit)
+import UIKit
+#endif
+
+#if os(macOS)
+import IOKit.pwr_mgt
+#endif
+
+/// Service that manages system sleep prevention during video playback.
+/// Prevents the display from sleeping while video is actively playing.
+@MainActor
+final class SleepPreventionService {
+    /// Whether sleep prevention is currently active.
+    private var isPreventingSleep = false
+
+    #if os(macOS)
+    /// The IOKit power assertion ID for macOS.
+    private var assertionID: IOPMAssertionID = 0
+    #endif
+
+    /// Prevents the system from sleeping.
+    /// Call this when video playback starts or resumes.
+    func preventSleep() {
+        guard !isPreventingSleep else { return }
+        isPreventingSleep = true
+
+        #if os(iOS) || os(tvOS)
+        UIApplication.shared.isIdleTimerDisabled = true
+        #elseif os(macOS)
+        let reason = "Yattee video playback" as CFString
+        IOPMAssertionCreateWithName(
+            kIOPMAssertionTypePreventUserIdleDisplaySleep as CFString,
+            IOPMAssertionLevel(kIOPMAssertionLevelOn),
+            reason,
+            &assertionID
+        )
+        #endif
+    }
+
+    /// Allows the system to sleep normally.
+    /// Call this when video playback pauses or stops.
+    func allowSleep() {
+        guard isPreventingSleep else { return }
+        isPreventingSleep = false
+
+        #if os(iOS) || os(tvOS)
+        UIApplication.shared.isIdleTimerDisabled = false
+        #elseif os(macOS)
+        if assertionID != 0 {
+            IOPMAssertionRelease(assertionID)
+            assertionID = 0
+        }
+        #endif
+    }
+}