Giropay integration update

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 ## UNRELEASED
 ### Added
 ### Changed
+* ui: Re-enable Giropay integration (#169)
+
 ### Removed
 ### Fixed
 

ui/src/main/AndroidManifest.xml

@@ -8,6 +8,11 @@
 
     <uses-permission android:name="android.permission.VIBRATE" />
 
+    <queries>
+        <package android:name="com.gimb.paydirekt.app" />
+        <package android:name="com.gimb.paydirekt.app.sandbox" />
+    </queries>
+
     <application>
         <activity
             android:name=".checkout.CheckoutActivity"

ui/src/main/java/io/snabble/sdk/ui/payment/GiropayInputView.java

@@ -4,6 +4,8 @@
 import android.app.Activity;
 import android.app.Application;
 import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ResolveInfo;
 import android.net.Uri;
 import android.os.Build;
 import android.util.AttributeSet;
@@ -19,10 +21,14 @@
 
 import androidx.activity.ComponentActivity;
 import androidx.activity.OnBackPressedCallback;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
+import java.util.List;
 import java.util.Map;
 import java.util.UUID;
 
+import io.snabble.sdk.Environment;
 import io.snabble.sdk.Snabble;
 import io.snabble.sdk.payment.PaymentCredentials;
 import io.snabble.sdk.payment.data.GiropayAuthorizationData;
@@ -122,10 +128,18 @@ public void onReceivedError(WebView view, int errorCode, String description, Str
 
             @Override
             public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
-                Uri uri = request.getUrl();
-                if (uri != null) {
-                    String url = uri.toString();
-                    Logger.d("shouldOverrideUrlLoading " + url);
+                final Uri uri = request.getUrl();
+                final Environment environment = Snabble.getInstance().getEnvironment();
+                if (isGiropayAppLinkUrl(uri, environment)) {
+                    final Intent giropayAppLinkIntent = new Intent(Intent.ACTION_VIEW);
+                    giropayAppLinkIntent.setData(request.getUrl());
+                    if (isGiropayAppAvailable(giropayAppLinkIntent, view.getContext(), environment)) {
+                        view.getContext().startActivity(giropayAppLinkIntent);
+                        return true;
+                    }
+                } else if (uri != null) {
+                    final String url = uri.toString();
+                    Logger.d("shouldOverrideUrlLoading: <" + url + ">");
 
                     switch (url) {
                         case SUCCESS_URL:
@@ -216,6 +230,46 @@ public void error(Throwable t) {
                 });
     }
 
+    private boolean isGiropayAppLinkUrl(@Nullable final Uri uri, @Nullable Environment environment) {
+        if (uri != null && uri.getHost() != null) {
+            return uri.getHost().startsWith(getGiropayAppLinkUrlHost(environment));
+        }
+        return false;
+    }
+
+    @NonNull
+    private String getGiropayAppLinkUrlHost(@Nullable final Environment environment) {
+        if (environment == Environment.PRODUCTION) {
+            return "app.paydirekt.de";
+        } else {
+            return "app.sandbox.paydirekt.de";
+        }
+    }
+
+    private boolean isGiropayAppAvailable(
+            @NonNull final Intent intent,
+            @NonNull final Context context,
+            @Nullable final Environment environment
+    ) {
+        final List<ResolveInfo> intentInfo = context.getPackageManager().queryIntentActivities(intent, 0);
+        final String appPackageName = getGiropayAppPackage(environment);
+        for (final ResolveInfo info : intentInfo) {
+            if (info.activityInfo.packageName.contains(appPackageName)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @NonNull
+    private String getGiropayAppPackage(final @Nullable Environment environment) {
+        if (environment == Environment.PRODUCTION) {
+            return "com.gimb.paydirekt.app";
+        } else {
+            return "com.gimb.paydirekt.app.sandbox";
+        }
+    }
+
     private void authenticateAndSave() {
         Keyguard.unlock(UIUtils.getHostFragmentActivity(getContext()), new Keyguard.Callback() {
             @Override