From 0b7263559db2a3a1a0865040769368a093ec015a Mon Sep 17 00:00:00 2001
From: Ian Yu-Hsun Lin <ianyuhsunlin@gmail.com>
Date: Wed, 11 May 2016 12:51:54 +0800
Subject: [PATCH 1/2] export a constant indicates the app is launched by voip
 push notification

---
 index.js                                      |  2 ++
 .../RNVoipPushNotificationManager.m           | 32 +++++++++++++++++--
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/index.js b/index.js
index e54a9d8..f9608af 100644
--- a/index.js
+++ b/index.js
@@ -16,6 +16,8 @@ var DEVICE_LOCAL_NOTIF_EVENT = 'voipLocalNotificationReceived';
 
 export default class RNVoipPushNotification {
 
+    static wakeupByPush = (RNVoipPushNotificationManager.wakeupByPush === 'true');
+
     /**
      * Schedules the localNotification for immediate presentation.
      *
diff --git a/ios/RNVoipPushNotification/RNVoipPushNotificationManager.m b/ios/RNVoipPushNotification/RNVoipPushNotificationManager.m
index e5bbd2d..8ef5362 100644
--- a/ios/RNVoipPushNotification/RNVoipPushNotificationManager.m
+++ b/ios/RNVoipPushNotification/RNVoipPushNotificationManager.m
@@ -14,9 +14,28 @@
 #import "RCTEventDispatcher.h"
 #import "RCTUtils.h"
 
-NSString *const RNVoipRemoteNotificationsRegistered = @"VoipRemoteNotificationsRegistered";
-NSString *const RNVoipLocalNotificationReceived = @"VoipLocalNotificationReceived";
-NSString *const RNVoipRemoteNotificationReceived = @"VoipRemoteNotificationReceived";
+NSString *const RNVoipRemoteNotificationsRegistered = @"voipRemoteNotificationsRegistered";
+NSString *const RNVoipLocalNotificationReceived = @"voipLocalNotificationReceived";
+NSString *const RNVoipRemoteNotificationReceived = @"voipRemoteNotificationReceived";
+
+static NSString *RCTCurrentAppBackgroundState()
+{
+    static NSDictionary *states;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        states = @{
+            @(UIApplicationStateActive): @"active",
+            @(UIApplicationStateBackground): @"background",
+            @(UIApplicationStateInactive): @"inactive"
+        };
+    });
+
+    if (RCTRunningInAppExtension()) {
+        return @"extension";
+    }
+
+    return states[@(RCTSharedApplication().applicationState)] ? : @"unknown";
+}
 
 @implementation RCTConvert (UILocalNotification)
 
@@ -64,6 +83,13 @@ - (void)setBridge:(RCTBridge *)bridge
                                                object:nil];
 }
 
+- (NSDictionary<NSString *, id> *)constantsToExport
+{
+    NSString *currentState = RCTCurrentAppBackgroundState();
+    NSLog(@"[RNVoipPushNotificationManager] constantsToExport currentState = %@", currentState);
+    return @{@"wakeupByPush": (currentState == @"background") ? @"true" : @"false"};
+}
+
 - (void)registerUserNotification:(NSDictionary *)permissions
 {
     UIUserNotificationType types = UIUserNotificationTypeNone;

From 3048679df21cd5a48b1dfadf42db4c1ce1c90d3b Mon Sep 17 00:00:00 2001
From: Ian Yu-Hsun Lin <ianyuhsunlin@gmail.com>
Date: Wed, 11 May 2016 13:04:52 +0800
Subject: [PATCH 2/2] update readme for exported constant `wakeupByPush`

---
 README.md | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/README.md b/README.md
index 875cb5a..ec050e1 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,24 @@ class MyComponent extends React.Component {
       // register your VoIP client, show local notification, etc.
       // e.g.
       this.doRegister();
+      
+      /* there is a boolean constant exported by this module called
+       * 
+       * wakeupByPush
+       * 
+       * you can use this constant to distinguish the app is launched
+       * by VoIP push notification or not
+       *
+       * e.g.
+       */
+       if (VoipPushNotification.wakeupByPush) {
+         // do something...
+
+         // remember to set this static variable to false
+         // since the constant are exported only at initialization time
+         // and it will keep the same in the whole app
+         VoipPushNotification.wakeupByPush = false;
+       }
 
       /**
        * Local Notification Payload