Add ability to skip duplicates during import

app/src/main/java/com/beemdevelopment/aegis/ui/ImportEntriesActivity.java

@@ -4,6 +4,7 @@ import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
@@ -26,15 +27,20 @@ import com.beemdevelopment.aegis.util.UUIDMap;
 import com.beemdevelopment.aegis.vault.VaultEntry;
 import com.beemdevelopment.aegis.vault.VaultRepository;
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
 
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
 
 public class ImportEntriesActivity extends AegisActivity {
+    private View _view;
     private Menu _menu;
     private ImportEntriesAdapter _adapter;
     private FabScrollHelper _fabScrollHelper;
@@ -48,6 +54,8 @@ public class ImportEntriesActivity extends AegisActivity {
         setContentView(R.layout.activity_import_entries);
         setSupportActionBar(findViewById(R.id.toolbar));
 
+        _view = findViewById(R.id.importEntriesRootView);
+
         ActionBar bar = getSupportActionBar();
         bar.setHomeAsUpIndicator(R.drawable.ic_close);
         bar.setDisplayHomeAsUpEnabled(true);
@@ -180,6 +188,7 @@ public class ImportEntriesActivity extends AegisActivity {
     }
 
     private void importDatabase(DatabaseImporter.State state) {
+        List<ImportEntry> importEntries = new ArrayList<>();
         DatabaseImporter.Result result;
         try {
             result = state.convert();
@@ -191,7 +200,9 @@ public class ImportEntriesActivity extends AegisActivity {
 
         UUIDMap<VaultEntry> entries = result.getEntries();
         for (VaultEntry entry : entries.getValues()) {
-            _adapter.addEntry(new ImportEntry(entry));
+            ImportEntry importEntry = new ImportEntry(entry);
+            _adapter.addEntry(importEntry);
+            importEntries.add(importEntry);
         }
 
         List<DatabaseImporterEntryException> errors = result.getErrors();
@@ -199,6 +210,8 @@ public class ImportEntriesActivity extends AegisActivity {
             String message = getResources().getQuantityString(R.plurals.import_error_dialog, errors.size(), errors.size());
             Dialogs.showMultiErrorDialog(this, R.string.import_error_title, message, errors, null);
         }
+
+        findDuplicates(importEntries);
     }
 
     private void showWipeEntriesDialog() {
@@ -236,6 +249,33 @@ public class ImportEntriesActivity extends AegisActivity {
         }
     }
 
+    private void findDuplicates(List<ImportEntry> importEntries) {
+        List<UUID> duplicateEntries = new ArrayList<>();
+        for (ImportEntry importEntry: importEntries) {
+            boolean exists = _vaultManager.getVault().getEntries().stream().anyMatch(item ->
+                    item.getIssuer().equals(importEntry.getEntry().getIssuer()) &&
+                    Arrays.equals(item.getInfo().getSecret(), importEntry.getEntry().getInfo().getSecret()));
+
+            if (exists) {
+                duplicateEntries.add(importEntry.getEntry().getUUID());
+            }
+        }
+
+        if (duplicateEntries.size() == 0) {
+            return;
+        }
+
+        _adapter.setCheckboxStates(duplicateEntries, false);
+        Snackbar snackbar = Snackbar.make(_view, getResources().getQuantityString(R.plurals.import_duplicate_toast, duplicateEntries.size(), duplicateEntries.size()), Snackbar.LENGTH_INDEFINITE);
+        snackbar.setAction(R.string.undo, new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                _adapter.setCheckboxStates(duplicateEntries, true);
+            }
+        });
+        snackbar.show();
+    }
+
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         _menu = menu;

app/src/main/java/com/beemdevelopment/aegis/ui/views/ImportEntriesAdapter.java

@@ -12,6 +12,7 @@ import com.beemdevelopment.aegis.ui.models.ImportEntry;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 public class ImportEntriesAdapter extends RecyclerView.Adapter<ImportEntryHolder> {
     private List<ImportEntry> _entries;
@@ -67,6 +68,14 @@ public class ImportEntriesAdapter extends RecyclerView.Adapter<ImportEntryHolder
         return entries;
     }
 
+    public void setCheckboxStates(List<UUID> uuids, boolean state) {
+        for (ImportEntry entry : _entries) {
+            if(uuids.contains(entry.getEntry().getUUID())) {
+                entry.setIsChecked(state);
+            }
+        }
+    }
+
     public void toggleCheckboxes() {
         int checkedEntries = getCheckedEntries().size();
         if (checkedEntries == 0 || checkedEntries != _entries.size()) {

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

@@ -159,6 +159,7 @@
     <string name="share">Share</string>
     <string name="yes">Yes</string>
     <string name="no">No</string>
+    <string name="undo">Undo</string>
     <string name="unlock">Unlock</string>
     <string name="advanced">Advanced</string>
     <string name="counter">Counter</string>
@@ -469,6 +470,10 @@
     <string name="pref_panic_trigger_summary">Delete vault when a panic trigger is received from Ripple</string>
 
     <string name="import_vault">Import vault</string>
+    <plurals name="import_duplicate_toast">
+        <item quantity="one">Unchecked %d potential duplicate. Please review the list of entries.</item>
+        <item quantity="other">Unchecked %d potential duplicates. Please review the list of entries.</item>
+    </plurals>
     <string name="importer_help_2fas">Supply a 2FAS Authenticator backup file.</string>
     <string name="importer_help_aegis">Supply an Aegis export/backup file.</string>
     <string name="importer_help_authenticator_plus">Supply an Authenticator Plus export file obtained through <b>Settings -> Backup &amp; Restore -> Export as Text and HTML</b>.</string>