From 0e8c9223f00f801abeb203c25a79b8f19259a11c Mon Sep 17 00:00:00 2001
From: Volodymyr Buberenko <vbuberen@users.noreply.github.com>
Date: Mon, 21 Oct 2024 12:00:04 +0300
Subject: [PATCH] feat(battery_plus): Add battery save mode check on MacOS
 (#3332)

---
 packages/battery_plus/battery_plus/README.md  |  2 +-
 .../integration_test/battery_plus_test.dart   |  6 ++--
 .../battery_plus/lib/battery_plus.dart        |  6 ++--
 .../battery_plus/BatteryPlusMacosPlugin.swift | 30 ++++++++++++-------
 4 files changed, 28 insertions(+), 16 deletions(-)

diff --git a/packages/battery_plus/battery_plus/README.md b/packages/battery_plus/battery_plus/README.md
index 6dfef1f81d..9e18a59c99 100644
--- a/packages/battery_plus/battery_plus/README.md
+++ b/packages/battery_plus/battery_plus/README.md
@@ -47,7 +47,7 @@ battery.onBatteryStateChanged.listen((BatteryState state) {
 });
 
 // Check if device in battery save mode
-// Currently available on Android, iOS and Windows platforms only
+// Currently available on Android, iOS, MacOS and Windows platforms only
 print(await battery.isInBatterySaveMode);
 ```
 
diff --git a/packages/battery_plus/battery_plus/example/integration_test/battery_plus_test.dart b/packages/battery_plus/battery_plus/example/integration_test/battery_plus_test.dart
index 41a500e740..04c0855dbf 100644
--- a/packages/battery_plus/battery_plus/example/integration_test/battery_plus_test.dart
+++ b/packages/battery_plus/battery_plus/example/integration_test/battery_plus_test.dart
@@ -17,8 +17,10 @@ void main() {
       Platform.isMacOS ||
       Platform.isWindows ||
       Platform.isLinux;
-  final bool isInBatterySaveModeIsImplemented =
-      Platform.isAndroid || Platform.isIOS || Platform.isWindows;
+  final bool isInBatterySaveModeIsImplemented = Platform.isAndroid ||
+      Platform.isIOS ||
+      Platform.isMacOS ||
+      Platform.isWindows;
 
   /// Throws [PlatformException] on iOS simulator and Windows.
   /// Run on Android only.
diff --git a/packages/battery_plus/battery_plus/lib/battery_plus.dart b/packages/battery_plus/battery_plus/lib/battery_plus.dart
index 0ffaff6a61..3f28505414 100644
--- a/packages/battery_plus/battery_plus/lib/battery_plus.dart
+++ b/packages/battery_plus/battery_plus/lib/battery_plus.dart
@@ -32,14 +32,14 @@ class Battery {
     return BatteryPlatform.instance;
   }
 
-  /// get battery level
+  /// Get battery level
   Future<int> get batteryLevel {
     return _platform.batteryLevel;
   }
 
-  /// check if device is on battery save mode
+  /// Check if device is on battery save mode
   ///
-  /// Currently only implemented on Android, iOS and Windows.
+  /// Currently only implemented on Android, iOS, MacOS and Windows.
   Future<bool> get isInBatterySaveMode {
     return _platform.isInBatterySaveMode;
   }
diff --git a/packages/battery_plus/battery_plus/macos/battery_plus/Sources/battery_plus/BatteryPlusMacosPlugin.swift b/packages/battery_plus/battery_plus/macos/battery_plus/Sources/battery_plus/BatteryPlusMacosPlugin.swift
index 246336c034..357dbca061 100644
--- a/packages/battery_plus/battery_plus/macos/battery_plus/Sources/battery_plus/BatteryPlusMacosPlugin.swift
+++ b/packages/battery_plus/battery_plus/macos/battery_plus/Sources/battery_plus/BatteryPlusMacosPlugin.swift
@@ -12,39 +12,40 @@ public class BatteryPlusMacosPlugin: NSObject, FlutterPlugin {
 
     public static func register(with registrar: FlutterPluginRegistrar) {
         let channel = FlutterMethodChannel(name: "dev.fluttercommunity.plus/battery", binaryMessenger: registrar.messenger)
-        
+
         let eventChannel = FlutterEventChannel(name: "dev.fluttercommunity.plus/charging", binaryMessenger: registrar.messenger)
 
         let chargingHandler = BatteryPlusChargingHandler()
 
         let instance = BatteryPlusMacosPlugin(chargingHandler: chargingHandler)
         registrar.addMethodCallDelegate(instance, channel: channel)
-        
+
         eventChannel.setStreamHandler(chargingHandler)
     }
-    
+
     public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
         switch call.method {
         case "getBatteryLevel":
             handleGetBatteryLevelMethodCall(result)
         case "getBatteryState":
             handleGetBatteryStateMethodCall(result)
+        case "isInBatterySaveMode":
+            handleIsBatterySaveMode(result)
         default:
             result(FlutterMethodNotImplemented)
         }
     }
-    
-    private func handleGetBatteryLevelMethodCall(_ result: FlutterResult){
+
+    private func handleGetBatteryLevelMethodCall(_ result: FlutterResult) {
         let level = getBatteryLevel()
-        if(level != -1){
+        if (level != -1) {
             result(level)
-            
         } else {
             result("UNAVAILABLE")
         }
-        
+
     }
-    
+
     private func getBatteryLevel()-> Int {
         let powerSourceSnapshot = IOPSCopyPowerSourcesInfo().takeRetainedValue()
         let sources = IOPSCopyPowerSourcesList(powerSourceSnapshot).takeRetainedValue() as Array
@@ -58,8 +59,17 @@ public class BatteryPlusMacosPlugin: NSObject, FlutterPlugin {
         return -1
     }
 
-    private func handleGetBatteryStateMethodCall(_ result: FlutterResult){
+    private func handleGetBatteryStateMethodCall(_ result: FlutterResult) {
         let state = self.chargingHandler.getBatteryStatus()
         result(state);
     }
+
+    private func handleIsBatterySaveMode(_ result: FlutterResult) {
+        if #available(macOS 12.0, *) {
+            result(ProcessInfo.processInfo.isLowPowerModeEnabled)
+        } else {
+            // Low Power Mode is not supported on macOS versions prior to 12.0
+            result(false)
+        }
+    }
 }