Yep. AI rewrote the whole thing.

Downterm/CommandNotch/Models/NotchOrchestrator.swift

@@ -0,0 +1,189 @@
+import Combine
+import SwiftUI
+
+@MainActor
+protocol ScreenRegistryType: AnyObject {
+    func allScreens() -> [ScreenContext]
+    func screenContext(for id: ScreenID) -> ScreenContext?
+    func activeScreenID() -> ScreenID?
+    func presentingScreenID(for workspaceID: WorkspaceID) -> ScreenID?
+    @discardableResult
+    func claimWorkspacePresentation(for screenID: ScreenID) -> ScreenID?
+    func releaseWorkspacePresentation(for screenID: ScreenID)
+}
+
+@MainActor
+protocol NotchPresentationHost: AnyObject {
+    func canPresentNotch(for screenID: ScreenID) -> Bool
+    func performOpenPresentation(for screenID: ScreenID)
+    func performClosePresentation(for screenID: ScreenID)
+}
+
+protocol SchedulerType {
+    @MainActor
+    func schedule(after interval: TimeInterval, action: @escaping @MainActor () -> Void) -> AnyCancellable
+}
+
+struct TaskScheduler: SchedulerType {
+    @MainActor
+    func schedule(after interval: TimeInterval, action: @escaping @MainActor () -> Void) -> AnyCancellable {
+        let task = Task { @MainActor in
+            try? await Task.sleep(nanoseconds: UInt64(interval * 1_000_000_000))
+            guard !Task.isCancelled else { return }
+            action()
+        }
+
+        return AnyCancellable {
+            task.cancel()
+        }
+    }
+}
+
+@MainActor
+final class NotchOrchestrator {
+    private let screenRegistry: any ScreenRegistryType
+    private weak var host: (any NotchPresentationHost)?
+    private let settingsController: AppSettingsController
+    private let scheduler: any SchedulerType
+
+    private var hoverOpenTasks: [ScreenID: AnyCancellable] = [:]
+    private var closeTransitionTasks: [ScreenID: AnyCancellable] = [:]
+
+    init(
+        screenRegistry: any ScreenRegistryType,
+        host: any NotchPresentationHost,
+        settingsController: AppSettingsController? = nil,
+        scheduler: (any SchedulerType)? = nil
+    ) {
+        self.screenRegistry = screenRegistry
+        self.host = host
+        self.settingsController = settingsController ?? AppSettingsController.shared
+        self.scheduler = scheduler ?? TaskScheduler()
+    }
+
+    func toggleOnActiveScreen() {
+        guard let screenID = screenRegistry.activeScreenID(),
+              host?.canPresentNotch(for: screenID) == true,
+              let context = screenRegistry.screenContext(for: screenID) else {
+            return
+        }
+
+        if context.notchState == .open {
+            close(screenID: screenID)
+        } else {
+            open(screenID: screenID)
+        }
+    }
+
+    func open(screenID: ScreenID) {
+        guard host?.canPresentNotch(for: screenID) == true,
+              let context = screenRegistry.screenContext(for: screenID) else {
+            return
+        }
+
+        if let presentingScreenID = screenRegistry.presentingScreenID(for: context.workspaceID),
+           presentingScreenID != screenID {
+            close(screenID: presentingScreenID)
+        }
+
+        cancelHoverOpen(for: screenID)
+        cancelCloseTransition(for: screenID)
+        context.cancelCloseTransition()
+
+        withAnimation(context.openAnimation) {
+            context.open()
+        }
+
+        _ = screenRegistry.claimWorkspacePresentation(for: screenID)
+        host?.performOpenPresentation(for: screenID)
+    }
+
+    func close(screenID: ScreenID) {
+        guard let context = screenRegistry.screenContext(for: screenID) else { return }
+
+        cancelHoverOpen(for: screenID)
+        cancelCloseTransition(for: screenID)
+        context.beginCloseTransition()
+
+        closeTransitionTasks[screenID] = scheduler.schedule(after: context.closeInteractionLockDuration) { [weak self] in
+            self?.finishCloseTransition(for: screenID)
+        }
+
+        withAnimation(context.closeAnimation) {
+            context.close()
+        }
+
+        screenRegistry.releaseWorkspacePresentation(for: screenID)
+        host?.performClosePresentation(for: screenID)
+    }
+
+    func handleHoverChange(_ hovering: Bool, for screenID: ScreenID) {
+        guard let context = screenRegistry.screenContext(for: screenID) else { return }
+
+        context.isHovering = hovering
+
+        if hovering {
+            scheduleHoverOpenIfNeeded(for: screenID)
+        } else {
+            cancelHoverOpen(for: screenID)
+            context.clearHoverOpenSuppression()
+        }
+    }
+
+    func cancelAllPendingWork() {
+        for task in hoverOpenTasks.values {
+            task.cancel()
+        }
+        for task in closeTransitionTasks.values {
+            task.cancel()
+        }
+
+        hoverOpenTasks.removeAll()
+        closeTransitionTasks.removeAll()
+    }
+
+    private func scheduleHoverOpenIfNeeded(for screenID: ScreenID) {
+        cancelHoverOpen(for: screenID)
+
+        guard let context = screenRegistry.screenContext(for: screenID) else { return }
+        guard settingsController.settings.behavior.openNotchOnHover,
+              context.notchState == .closed,
+              !context.isCloseTransitionActive,
+              !context.suppressHoverOpenUntilHoverExit,
+              context.isHovering else {
+            return
+        }
+
+        hoverOpenTasks[screenID] = scheduler.schedule(after: settingsController.settings.behavior.minimumHoverDuration) { [weak self] in
+            guard let self,
+                  let context = self.screenRegistry.screenContext(for: screenID),
+                  context.isHovering,
+                  context.notchState == .closed,
+                  !context.isCloseTransitionActive,
+                  !context.suppressHoverOpenUntilHoverExit else {
+                return
+            }
+
+            self.hoverOpenTasks[screenID] = nil
+            self.open(screenID: screenID)
+        }
+    }
+
+    private func finishCloseTransition(for screenID: ScreenID) {
+        closeTransitionTasks[screenID] = nil
+        guard let context = screenRegistry.screenContext(for: screenID) else { return }
+
+        context.endCloseTransition()
+        scheduleHoverOpenIfNeeded(for: screenID)
+    }
+
+    private func cancelHoverOpen(for screenID: ScreenID) {
+        hoverOpenTasks[screenID]?.cancel()
+        hoverOpenTasks[screenID] = nil
+    }
+
+    private func cancelCloseTransition(for screenID: ScreenID) {
+        closeTransitionTasks[screenID]?.cancel()
+        closeTransitionTasks[screenID] = nil
+    }
+}