add macOS implementation

incubator/@react-native-webapis/battery-status/RNWBatteryStatus.podspec

@@ -23,8 +23,12 @@ Pod::Spec.new do |s|
   # Include both package and repository relative paths to allow the podspec to
   # be consumed from both a local path, and as a podspec outside a spec
   # repository.
-  s.source_files         = 'ios/*.{h,m}',                            # :path
-                           "#{repository['directory']}/ios/*.{h,m}"  # :podspec
-  s.public_header_files  = 'ios/*.h',                                # :path
-                           "#{repository['directory']}/ios/*.h"      # :podspec
+  s.ios.source_files         = 'ios/*.{h,m}',                            # :path
+                               "#{repository['directory']}/ios/*.{h,m}"  # :podspec
+  s.ios.public_header_files  = 'ios/*.h',                                # :path
+                               "#{repository['directory']}/ios/*.h"      # :podspec
+  s.osx.source_files         = 'macos/*.{h,m}',                            # :path
+                               "#{repository['directory']}/macos/*.{h,m}"  # :podspec
+  s.osx.public_header_files  = 'macos/*.h',                                # :path
+                               "#{repository['directory']}/macos/*.h"      # :podspec
 end

incubator/@react-native-webapis/battery-status/macos/RNWBatteryStatus.h

@@ -0,0 +1,10 @@
+#import <Foundation/Foundation.h>
+
+#import <React/RCTBridgeModule.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface RNWBatteryStatus : NSObject <RCTBridgeModule>
+@end
+
+NS_ASSUME_NONNULL_END

incubator/@react-native-webapis/battery-status/macos/RNWBatteryStatus.m

@@ -0,0 +1,65 @@
+#import "RNWBatteryStatus.h"
+
+#import <IOKit/ps/IOPowerSources.h>
+
+@implementation RNWBatteryStatus
+
+RCT_EXPORT_MODULE(RNWBatteryStatus)
+
++ (BOOL)requiresMainQueueSetup
+{
+    return NO;
+}
+
+// clang-format off
+RCT_EXPORT_METHOD(getStatus:(RCTPromiseResolveBlock)resolve
+                   rejecter:(RCTPromiseRejectBlock)reject)
+// clang-format on
+{
+    NSMutableDictionary *status = [NSMutableDictionary dictionaryWithCapacity:4];
+
+    CFTypeRef psInfo = IOPSCopyPowerSourcesInfo();
+    if (psInfo != nil) {
+        CFArrayRef psListRef = IOPSCopyPowerSourcesList(psInfo);
+        if (CFArrayGetCount(psListRef) > 0) {
+            CFTypeRef ps = CFArrayGetValueAtIndex(psListRef, 0);
+            CFDictionaryRef desc = IOPSGetPowerSourceDescription(psInfo, ps);
+
+            CFTypeRef state = CFDictionaryGetValue(desc, CFSTR(kIOPSPowerSourceStateKey));
+            BOOL isPluggedIn = CFStringCompare(state, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo;
+
+            CFTypeRef charging = CFDictionaryGetValue(desc, CFSTR(kIOPSIsChargingKey));
+            status[@"charging"] = [NSNumber numberWithBool:CFBooleanGetValue(charging)];
+
+            CFTypeRef chargingTime = nil;
+            if (isPluggedIn && CFDictionaryGetValueIfPresent(desc, CFSTR(kIOPSTimeToFullChargeKey), &chargingTime)) {
+                int minutes = 0;
+                CFNumberGetValue(chargingTime, kCFNumberIntType, &minutes);
+                status[@"chargingTime"] = [NSNumber numberWithInt:minutes < 0 ? minutes : minutes * 60];
+            } else {
+                status[@"chargingTime"] = @-1;
+            }
+
+            CFTypeRef dischargingTime = nil;
+            if (!isPluggedIn && CFDictionaryGetValueIfPresent(desc, CFSTR(kIOPSTimeToEmptyKey), &dischargingTime)) {
+                int minutes = 0;
+                CFNumberGetValue(dischargingTime, kCFNumberIntType, &minutes);
+                status[@"dischargingTime"] = [NSNumber numberWithInt:minutes < 0 ? minutes : minutes * 60];
+            } else {
+                status[@"dischargingTime"] = @-1;
+            }
+
+            CFTypeRef level = CFDictionaryGetValue(desc, CFSTR(kIOPSCurrentCapacityKey));
+            int capacity = 0;
+            CFNumberGetValue(level, kCFNumberIntType, &capacity);
+            status[@"level"] = [NSNumber numberWithFloat:capacity / 100.0];
+        }
+
+        CFRelease(psListRef);
+        CFRelease(psInfo);
+    }
+
+    resolve(status);
+}
+
+@end

incubator/@react-native-webapis/battery-status/macos/RNWBatteryStatus.xcodeproj/project.pbxproj

@@ -0,0 +1 @@
+/* Dummy file so @react-native-community/cli recognizes this as an macOS package */