Cold startup js refactor (#1598)

* Switch to SingleDex and remove all locales

* WIP Mattermost Start Component for lazy loading modules

* Add files changed for native modules

* Add Entry component and app global object

* dispatch setStatusBarHeight for iOS

* Update screen imports

* Include Entry screen

* Refactor app to mattermost.android.js

* Override unnecessary java files

* Fix minor issues in changes

* Display empty state based on user credentials

Also, add proper background theme for empty loading screen

* Add native module constant cache support

* Fix startup theme regression

* Add Keychain support for credentials

* Fix Orientation regression

*  Fix SharedExtension regression

* Emit NATIVE_APP_LAUNCHED across bridge only once during cold start

* Add iOS Support

* Revert to previous implementation of i18n

* Fix styling issues

* Include listener for SERVER_VERSION_CHANGED

* Add SafeAreaView in Entry screen

* Register deviceToken early, in order to get iOS PN Support

* Include StartTimeModule

* Add ReplyFromPush support and remove NATIVE_APP_LAUNCHED listener

* Package native constants in StartTimeModule and avoid bridge calls

* Fix check-style errors

* Code cleanup

* Rename StartTimeModule to InitializationModule

* Remove NavigationApplication

* Documentation and minor changes

* Account for app opening after SharedExtension

* Refactor getIntl to getTranslations

* Move native module constants into it's own forked repos

* Include FetchBlob and DeviceInfo forked repos

android/app/src/main/java/com/mattermost/share/ShareModule.java

@@ -2,7 +2,6 @@ package com.mattermost.share;
 
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactApplicationContext;
-import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.Promise;
 import com.facebook.react.bridge.ReadableArray;
 import com.facebook.react.bridge.ReadableMap;
@@ -10,23 +9,25 @@ import com.facebook.react.bridge.ReactMethod;
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.bridge.WritableArray;
 import com.facebook.react.bridge.Arguments;
+import com.mattermost.rnbeta.MainApplication;
 
 import android.app.Activity;
 import android.content.Intent;
 import android.net.Uri;
-import android.util.Log;
 
-import android.graphics.Bitmap;
-import java.io.InputStream;
 import java.io.File;
 import java.util.ArrayList;
-import javax.annotation.Nonnull;
+
+import javax.annotation.Nullable;
 
 import org.json.JSONArray;
 import org.json.JSONObject;
 import org.json.JSONException;
 
 import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
 import okhttp3.MediaType;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
@@ -37,8 +38,11 @@ import okhttp3.Response;
 public class ShareModule extends ReactContextBaseJavaModule {
     private final OkHttpClient client = new OkHttpClient();
     public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
-    public ShareModule(ReactApplicationContext reactContext) {
+    private final MainApplication mApplication;
+
+    public ShareModule(MainApplication application, ReactApplicationContext reactContext) {
         super(reactContext);
+        mApplication = application;
     }
     private File tempFolder;
 
@@ -59,6 +63,15 @@ public class ShareModule extends ReactContextBaseJavaModule {
         }
     }
 
+    @Nullable
+    @Override
+    public Map<String, Object> getConstants() {
+        HashMap<String, Object> constants = new HashMap<>(1);
+        constants.put("isOpened", mApplication.sharedExtensionIsOpened);
+        mApplication.sharedExtensionIsOpened = false;
+        return constants;
+    }
+
     @ReactMethod
     public void close(ReadableMap data) {
         this.clear();