added android play services availability checks - will throw a js error if not available, still need to add the makePlayServicesAvailable functionality

Author: Salakar

android/src/main/java/io/fullstack/firestack/FirestackModule.java

@@ -1,5 +1,6 @@
 package io.fullstack.firestack;
 
+import java.util.HashMap;
 import java.util.Map;
 
 import android.util.Log;
@@ -17,7 +18,8 @@
 import com.facebook.react.bridge.ReactContext;
 
 import com.google.android.gms.common.ConnectionResult;
-//import com.google.android.gms.common.GooglePlayServicesUtil;
+import com.google.android.gms.common.GoogleApiAvailability;
+
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.FirebaseOptions;
 import com.google.firebase.database.ServerValue;
@@ -27,7 +29,7 @@ interface KeySetterFn {
 }
 
 @SuppressWarnings("WeakerAccess")
-class FirestackModule extends ReactContextBaseJavaModule implements LifecycleEventListener {
+public class FirestackModule extends ReactContextBaseJavaModule implements LifecycleEventListener {
   private static final String TAG = "Firestack";
   private Context context;
   private ReactContext mReactContext;
@@ -46,18 +48,20 @@ public String getName() {
     return TAG;
   }
 
-//  private static Boolean hasValidPlayServices() {
-//    final int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this.context);
-//    if (status != ConnectionResult.SUCCESS) {
-//      Log.e(TAG, GooglePlayServicesUtil.getErrorString(status));
-//      Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, 1);
-//      dialog.show();
-//      return false;
-//    } else {
-//      Log.i(TAG, GooglePlayServicesUtil.getErrorString(status));
-//      return true;
-//    }
-//  }
+  private WritableMap getPlayServicesStatus() {
+    GoogleApiAvailability gapi = GoogleApiAvailability.getInstance();
+    final int status = gapi.isGooglePlayServicesAvailable(getReactApplicationContext());
+    WritableMap result = Arguments.createMap();
+    result.putInt("status", status);
+    if (status == ConnectionResult.SUCCESS) {
+      result.putBoolean("isAvailable", true);
+    } else {
+      result.putBoolean("isAvailable", false);
+      result.putBoolean("isUserResolvableError", gapi.isUserResolvableError(status));
+      result.putString("error", gapi.getErrorString(status));
+    }
+    return result;
+  }
 
   @ReactMethod
   public void configureWithOptions(final ReadableMap params, @Nullable final Callback onComplete) {
@@ -198,4 +202,11 @@ public void onHostPause() {
   public void onHostDestroy() {
 
   }
+
+  @Override
+  public Map<String, Object> getConstants() {
+    final Map<String, Object> constants = new HashMap<>();
+    constants.put("googleApiAvailability", getPlayServicesStatus());
+    return constants;
+  }
 }

lib/firestack.js

@@ -22,6 +22,13 @@ const instances = { default: null };
 const FirestackModule = NativeModules.Firestack;
 const FirestackModuleEvt = new NativeEventEmitter(FirestackModule);
 
+type GoogleApiAvailabilityType = {
+  status: number,
+  isAvailable: boolean,
+  isUserResolvableError?: boolean,
+  error?: string
+};
+
 /**
  * @class Firestack
  */
@@ -31,10 +38,10 @@ export default class Firestack extends Singleton {
    *
    * @param options
    */
-  constructor(options: Object) {
+  constructor(options: Object = {}) {
     const instance = super(options);
 
-    instance.options = options || {};
+    instance.options = Object.assign({ errorOnMissingPlayServices: true }, options);
     instance._debug = instance.options.debug || false;
 
     Log.enable(instance._debug);
@@ -53,6 +60,10 @@ export default class Firestack extends Singleton {
     instance.configurePromise = instance.configure(instance.options);
 
     instance._auth = new Auth(instance, instance.options);
+
+    if (instance.options.errorOnMissingPlayServices && !this.googleApiAvailability.isAvailable) {
+      throw new Error(`Google Play Services is required to run this application but no valid installation was found (Code ${this.googleApiAvailability.status}).`);
+    }
   }
 
   _db: ?Object;
@@ -179,6 +190,15 @@ export default class Firestack extends Singleton {
     return Object.keys(instances);
   }
 
+  /**
+   * Returns androids GoogleApiAvailability status and message if available.
+   * @returns {GoogleApiAvailabilityType|{isAvailable: boolean, status: number}}
+   */
+  get googleApiAvailability(): GoogleApiAvailabilityType {
+    // if not available then return a fake object for ios - saves doing platform specific logic.
+    return FirestackModule.googleApiAvailability || { isAvailable: true, status: 0 };
+  }
+
   /**
    * Logger
    */