Method for checking speaker status (#41)

* contactIdentifier added to startCall action.

* README.md updated.

* checkIfBusy method added.

* checkIfBusy method moved to the bottom of index.js

* version 1.3.4

* publish congig added.

* setMute method and event handler added.

* checkSpeaker method added

* package.json bugs fixed.

README.md

@@ -170,6 +170,10 @@ Switch the mic on/off
 
 Checks if there are any active calls on the device and returns a promise with a boolean value (`true` if there're active calls, `false` otherwise).
 
+### checkSpeaker
+
+Checks if the device speaker is on and returns a promise with a boolean value (`true` if speaker is on, `false` otherwise).
+
 ## Events
 
 ### - didReceiveStartCallAction

index.js

@@ -115,6 +115,12 @@ export default class RNCallKit {
         : Promise.reject('RNCallKit.checkIfBusy was called from unsupported OS');
     };
 
+    static checkSpeaker() {
+      return Platform.OS === 'ios'
+        ? _RNCallKit.checkSpeaker()
+        : Promise.reject('RNCallKit.checkSpeaker was called from unsupported OS');
+    }
+
     /*
     static setHeldCall(uuid, onHold) {
         if (Platform.OS !== 'ios') return;

ios/RNCallKit/RNCallKit.m

@@ -93,6 +93,17 @@ - (void)dealloc
     resolve(@(self.callKitCallController.callObserver.calls.count > 0));
 }
 
+RCT_REMAP_METHOD(checkSpeaker,
+                 checkSpeakerResolver:(RCTPromiseResolveBlock)resolve
+                 rejecter:(RCTPromiseRejectBlock)reject)
+{
+#ifdef DEBUG
+    NSLog(@"[RNCallKit][checkSpeaker]");
+#endif
+    NSString *output = [AVAudioSession sharedInstance].currentRoute.outputs.count > 0 ? [AVAudioSession sharedInstance].currentRoute.outputs[0].portType : nil;
+    resolve(@([output isEqualToString:@"Speaker"]));
+}
+
 #pragma mark - CXCallController call actions
 
 // Display the incoming call to the user