Allow entering response code manually

app/src/fdroid/java/eu/faircode/email/ActivityBilling.java

@@ -169,8 +169,12 @@ public class ActivityBilling extends ActivityBase implements /*PurchasesUpdatedL
     }
 
     static boolean activatePro(Context context, Uri data) throws NoSuchAlgorithmException {
-        String challenge = getChallenge(context);
         String response = data.getQueryParameter("response");
+        return activatePro(context, response);
+    }
+
+    static boolean activatePro(Context context, String response) throws NoSuchAlgorithmException {
+        String challenge = getChallenge(context);
         Log.i("IAB challenge=" + challenge);
         Log.i("IAB response=" + response);
         String expected = getResponse(context);

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -4051,7 +4051,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     else
                         ToastEx.makeText(context, R.string.title_pro_invalid, Toast.LENGTH_LONG).show();
                 } catch (NoSuchAlgorithmException ex) {
-                    Log.unexpectedError(parentFragment.getParentFragmentManager(), ex);
+                    Log.e(ex);
+                    ToastEx.makeText(context, Log.formatThrowable(ex), Toast.LENGTH_LONG).show();
                 }
             } else {
                 if ("full".equals(uri.getScheme())) {

app/src/main/java/eu/faircode/email/FragmentPro.java

@@ -19,22 +19,29 @@ package eu.faircode.email;
     Copyright 2018-2020 by Marcel Bokhorst (M66B)
 */
 
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.Paint;
 import android.net.Uri;
 import android.os.Bundle;
 import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.CheckBox;
 import android.widget.CompoundButton;
+import android.widget.EditText;
 import android.widget.ImageView;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.app.AlertDialog;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 import androidx.preference.PreferenceManager;
 
@@ -57,6 +64,7 @@ public class FragmentPro extends FragmentBase implements SharedPreferences.OnSha
     @Nullable
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
         setSubtitle(R.string.menu_pro);
+        setHasOptionsMenu(true);
 
         final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());
         boolean debug = prefs.getBoolean("debug", false);
@@ -220,6 +228,56 @@ public class FragmentPro extends FragmentBase implements SharedPreferences.OnSha
         prefs.unregisterOnSharedPreferenceChangeListener(this);
     }
 
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        inflater.inflate(R.menu.menu_pro, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    @Override
+    public void onPrepareOptionsMenu(@NonNull Menu menu) {
+        menu.findItem(R.id.menu_response).setVisible(!Helper.isPlayStoreInstall());
+        super.onPrepareOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.menu_response:
+                onMenuResponse();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void onMenuResponse() {
+        final View dview = LayoutInflater.from(getContext()).inflate(R.layout.dialog_response, null);
+        final EditText etResponse = dview.findViewById(R.id.etResponse);
+
+        new AlertDialog.Builder(getContext())
+                .setView(dview)
+                .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        try {
+                            String response = etResponse.getText().toString().trim();
+                            int q = response.indexOf("?response=");
+                            if (q > 0)
+                                response = response.substring(q + 10);
+                            if (ActivityBilling.activatePro(getContext(), response))
+                                ToastEx.makeText(getContext(), R.string.title_pro_valid, Toast.LENGTH_LONG).show();
+                            else
+                                ToastEx.makeText(getContext(), R.string.title_pro_invalid, Toast.LENGTH_LONG).show();
+                        } catch (Throwable ex) {
+                            Log.e(ex);
+                            ToastEx.makeText(getContext(), Log.formatThrowable(ex), Toast.LENGTH_LONG).show();
+                        }
+                    }
+                })
+                .show();
+    }
+
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
         if ("pro".equals(key)) {

app/src/main/res/layout/dialog_response.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:padding="24dp">
+
+    <eu.faircode.email.FixedTextView
+        android:id="@+id/tvCaption"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:labelFor="@+id/etPin"
+        android:text="@string/title_pro_response"
+        android:textAppearance="@style/TextAppearance.AppCompat.Large"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <eu.faircode.email.EditTextPlain
+        android:id="@+id/etResponse"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:inputType="text"
+        android:maxLines="1"
+        android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tvCaption">
+
+        <requestFocus />
+    </eu.faircode.email.EditTextPlain>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/menu_pro.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_response"
+        android:title="@string/title_pro_response"
+        app:showAsAction="never" />
+</menu>

app/src/main/res/values/strings.xml

@@ -1351,6 +1351,7 @@
     <string name="title_pro_price">Why are the pro features so expensive?</string>
     <string name="title_pro_restore">How can I restore a purchase?</string>
     <string name="title_pro_pending">Purchase pending</string>
+    <string name="title_pro_response" translatable="false">Response</string>
     <string name="title_pro_activated">All pro features are activated</string>
     <string name="title_pro_valid">All pro features activated</string>
     <string name="title_pro_invalid">Invalid response</string>

app/src/play/java/eu/faircode/email/ActivityBilling.java

@@ -165,12 +165,16 @@ public class ActivityBilling extends ActivityBase implements PurchasesUpdatedLis
     }
 
     private static String getResponse(Context context) throws NoSuchAlgorithmException {
-        return Helper.sha256(BuildConfig.APPLICATION_ID + getChallenge(context));
+        return Helper.sha256(BuildConfig.APPLICATION_ID.replace(".debug", "") + getChallenge(context));
     }
 
     static boolean activatePro(Context context, Uri data) throws NoSuchAlgorithmException {
-        String challenge = getChallenge(context);
         String response = data.getQueryParameter("response");
+        return activatePro(context, response);
+    }
+
+    static boolean activatePro(Context context, String response) throws NoSuchAlgorithmException {
+        String challenge = getChallenge(context);
         Log.i("IAB challenge=" + challenge);
         Log.i("IAB response=" + response);
         String expected = getResponse(context);