[admob][android] Start implementation of Rewarded Video

android/src/main/java/io/invertase/firebase/admob/RNFirebaseAdMob.java

@@ -30,6 +30,7 @@ public class RNFirebaseAdMob extends ReactContextBaseJavaModule {
   }
 
   private HashMap<String, RNFirebaseAdmobInterstitial> interstitials = new HashMap<>();
+  private HashMap<String, RNFirebaseRewardedVideo> rewardedVideos = new HashMap<>();
 
   public RNFirebaseAdMob(ReactApplicationContext reactContext) {
     super(reactContext);
@@ -44,6 +45,53 @@ public class RNFirebaseAdMob extends ReactContextBaseJavaModule {
   @ReactMethod
   public void interstitialLoadAd(String adUnit, ReadableMap request) {
     RNFirebaseAdmobInterstitial interstitial = getOrCreateInterstitial(adUnit);
+    interstitial.loadAd(buildRequest(request).build());
+  }
+
+  @ReactMethod
+  public void interstitialShowAd(String adUnit) {
+    RNFirebaseAdmobInterstitial interstitial = getOrCreateInterstitial(adUnit);
+    interstitial.show();
+  }
+
+  @ReactMethod
+  public void rewardedVideoLoadAd(String adUnit, ReadableMap request) {
+    RNFirebaseRewardedVideo rewardedVideo = getOrCreateRewardedVideo(adUnit);
+    rewardedVideo.loadAd(buildRequest(request).build());
+  }
+
+  @ReactMethod
+  public void rewardedVideoShowAd(String adUnit) {
+    RNFirebaseRewardedVideo rewardedVideo = getOrCreateRewardedVideo(adUnit);
+    rewardedVideo.show();
+  }
+
+  private RNFirebaseAdmobInterstitial getOrCreateInterstitial(String adUnit) {
+    if (interstitials.containsKey(adUnit)) {
+      return interstitials.get(adUnit);
+    }
+    RNFirebaseAdmobInterstitial interstitial = new RNFirebaseAdmobInterstitial(adUnit, this);
+    interstitials.put(adUnit, interstitial);
+    return interstitial;
+  }
+
+  private RNFirebaseRewardedVideo getOrCreateRewardedVideo(String adUnit) {
+    if (rewardedVideos.containsKey(adUnit)) {
+      return rewardedVideos.get(adUnit);
+    }
+    RNFirebaseRewardedVideo rewardedVideo = new RNFirebaseRewardedVideo(adUnit, this);
+    rewardedVideos.put(adUnit, rewardedVideo);
+    return rewardedVideo;
+  }
+
+  @Override
+  public Map<String, Object> getConstants() {
+    final Map<String, Object> constants = new HashMap<>();
+    constants.put("DEVICE_ID_EMULATOR", AdRequest.DEVICE_ID_EMULATOR);
+    return constants;
+  }
+
+  AdRequest.Builder buildRequest(ReadableMap request) {
     AdRequest.Builder requestBuilder = new AdRequest.Builder();
 
     if (request.hasKey("testDevice")) {
@@ -57,30 +105,6 @@ public class RNFirebaseAdMob extends ReactContextBaseJavaModule {
       requestBuilder.addKeyword((String) word);
     }
 
-    interstitial.loadAd(requestBuilder.build());
-  }
-
-  @ReactMethod
-  public void interstitialShowAd(String adUnit) {
-    RNFirebaseAdmobInterstitial interstitial = getOrCreateInterstitial(adUnit);
-    interstitial.show();
-  }
-
-  private RNFirebaseAdmobInterstitial getOrCreateInterstitial(String adUnit) {
-    if (interstitials.containsKey(adUnit)) {
-      return interstitials.get(adUnit);
-    }
-    RNFirebaseAdmobInterstitial interstitial = new RNFirebaseAdmobInterstitial(adUnit, this);
-    interstitials.put(adUnit, interstitial);
-    return interstitial;
-  }
-
-
-
-  @Override
-  public Map<String, Object> getConstants() {
-    final Map<String, Object> constants = new HashMap<>();
-    constants.put("DEVICE_ID_EMULATOR", AdRequest.DEVICE_ID_EMULATOR);
-    return constants;
+    return requestBuilder;
   }
 }

android/src/main/java/io/invertase/firebase/admob/RNFirebaseAdMobUtils.java

@@ -0,0 +1,39 @@
+package io.invertase.firebase.admob;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableMap;
+import com.google.android.gms.ads.AdRequest;
+
+class RNFirebaseAdMobUtils {
+
+  /**
+   * Convert common AdMob errors into a standard format
+   * @param errorCode
+   * @return
+   */
+  static WritableMap errorCodeToMap(int errorCode) {
+    WritableMap map = Arguments.createMap();
+
+    switch (errorCode) {
+      case AdRequest.ERROR_CODE_INTERNAL_ERROR:
+        map.putString("code", "admob/error-code-internal-error");
+        map.putString("message", "Something happened internally; for instance, an invalid response was received from the ad server.");
+        break;
+      case AdRequest.ERROR_CODE_INVALID_REQUEST:
+        map.putString("code", "admob/error-code-invalid-request");
+        map.putString("message", "The ad request was invalid; for instance, the ad unit ID was incorrect.");
+        break;
+      case AdRequest.ERROR_CODE_NETWORK_ERROR:
+        map.putString("code", "admob/error-code-network-error");
+        map.putString("message", "The ad request was unsuccessful due to network connectivity.");
+        break;
+      case AdRequest.ERROR_CODE_NO_FILL:
+        map.putString("code", "admob/error-code-no-fill");
+        map.putString("message", "The ad request was successful, but no ad was returned due to lack of ad inventory.");
+        break;
+    }
+
+    return map;
+  }
+
+}

android/src/main/java/io/invertase/firebase/admob/RNFirebaseRewardedVideo.java

@@ -0,0 +1,121 @@
+package io.invertase.firebase.admob;
+
+
+import android.app.Activity;
+import android.support.annotation.Nullable;
+
+import com.facebook.react.bridge.Arguments;
+import com.facebook.react.bridge.WritableMap;
+import com.google.android.gms.ads.AdListener;
+import com.google.android.gms.ads.AdRequest;
+import com.google.android.gms.ads.InterstitialAd;
+import com.google.android.gms.ads.MobileAds;
+import com.google.android.gms.ads.reward.RewardItem;
+import com.google.android.gms.ads.reward.RewardedVideoAd;
+import com.google.android.gms.ads.reward.RewardedVideoAdListener;
+
+import io.invertase.firebase.Utils;
+
+public class RNFirebaseRewardedVideo implements RewardedVideoAdListener {
+
+  private RewardedVideoAd mAd;
+  private String adUnit;
+  private RNFirebaseAdMob adMob;
+  private RewardedVideoAd rewardedVideo;
+
+  RNFirebaseRewardedVideo(final String adUnitString, final RNFirebaseAdMob adMobInstance) {
+    adUnit = adUnitString;
+    adMob = adMobInstance;
+
+    rewardedVideo = MobileAds.getRewardedVideoAdInstance(adMob.getContext());
+    rewardedVideo.setRewardedVideoAdListener(this);
+  }
+
+  /**
+   * Load an Ad with a AdRequest instance
+   * @param adRequest
+   */
+  void loadAd(final AdRequest adRequest) {
+    Activity activity = adMob.getActivity();
+    if (activity != null) {
+      activity.runOnUiThread(new Runnable() {
+        @Override
+        public void run() {
+          rewardedVideo.loadAd(adUnit, adRequest);
+        }
+      });
+    }
+  }
+
+  /**
+   * Show the loaded interstitial, if it's loaded
+   */
+  void show() {
+    Activity activity = adMob.getActivity();
+    if (activity != null) {
+      activity.runOnUiThread(new Runnable() {
+        @Override
+        public void run() {
+          if (rewardedVideo.isLoaded()) {
+            rewardedVideo.show();
+          }
+        }
+      });
+    }
+  }
+
+  @Override
+  public void onRewarded(RewardItem reward) {
+    sendEvent("onRewarded", null);
+  }
+
+  @Override
+  public void onRewardedVideoAdLeftApplication() {
+    sendEvent("onRewardedVideoAdLeftApplication", null);
+  }
+
+  @Override
+  public void onRewardedVideoAdClosed() {
+    sendEvent("onRewardedVideoAdClosed", null);
+  }
+
+  @Override
+  public void onRewardedVideoAdFailedToLoad(int errorCode) {
+    WritableMap payload = RNFirebaseAdMobUtils.errorCodeToMap(errorCode);
+    sendEvent("onRewardedVideoAdFailedToLoad", payload);
+  }
+
+  @Override
+  public void onRewardedVideoAdLoaded() {
+    sendEvent("onRewardedVideoAdLoaded", null);
+  }
+
+  @Override
+  public void onRewardedVideoAdOpened() {
+    sendEvent("onRewardedVideoAdOpened", null);
+  }
+
+  @Override
+  public void onRewardedVideoStarted() {
+    sendEvent("onRewardedVideoStarted", null);
+  }
+
+  // TODO onResume etc??? https://developers.google.com/admob/android/rewarded-video
+
+  /**
+   * Send a native event over the bridge with a type and optional payload
+   * @param type
+   * @param payload
+   */
+  void sendEvent(String type, final @Nullable WritableMap payload) {
+    WritableMap map = Arguments.createMap();
+    map.putString("type", type);
+    map.putString("adunit", adUnit);
+
+    if (payload != null) {
+      map.putMap("payload", payload);
+    }
+
+    Utils.sendEvent(adMob.getContext(), "rewarded_video_event", map);
+  }
+}