Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/desktop/electron/power-save.ts

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+/**
+ * Keep-awake — hold a single machine-global power-save blocker.
+ *
+ * `prevent-app-suspension` stops the system from sleeping (long overnight
+ * agent runs keep going) while still letting the display dim. The renderer
+ * owns the preference (persisted in localStorage) and mirrors it here over
+ * IPC; the main process owns the one native blocker, same authority split as
+ * translucency/zoom. Electron auto-releases the blocker on quit.
+ */
+
+export type KeepAwakeType = 'prevent-app-suspension' | 'prevent-display-sleep'
+
+/** The slice of Electron's `powerSaveBlocker` we use (injected for testing). */
+export interface PowerSaveBlockerLike {
+  start(type: KeepAwakeType): number
+  stop(id: number): void
+  isStarted(id: number): boolean
+}
+
+export interface KeepAwake {
+  /** Turn the blocker on/off (idempotent). Returns the resulting state. */
+  set(on: boolean): boolean
+  isActive(): boolean
+}
+
+export function createKeepAwake(
+  blocker: PowerSaveBlockerLike,
+  type: KeepAwakeType = 'prevent-app-suspension'
+): KeepAwake {
+  let id: null | number = null
+
+  const isActive = () => id !== null && blocker.isStarted(id)
+
+  return {
+    isActive,
+    set(on) {
+      if (on && !isActive()) {
+        id = blocker.start(type)
+      } else if (!on && id !== null) {
+        if (blocker.isStarted(id)) {
+          blocker.stop(id)
+        }
+
+        id = null
+      }
+
+      return isActive()
+    }
+  }
+}