diff --git a/android/app/src/main/java/com/dinect/checker/AbstractScannerActivity.java b/android/app/src/main/java/com/dinect/checker/AbstractScannerActivity.java
index 8aea8a7..c8bf444 100644
--- a/android/app/src/main/java/com/dinect/checker/AbstractScannerActivity.java
+++ b/android/app/src/main/java/com/dinect/checker/AbstractScannerActivity.java
@@ -61,279 +61,278 @@ import okhttp3.ResponseBody;
 
 public abstract class AbstractScannerActivity extends AppCompatActivity {
 
-    private final static String TAG = "Checker.ScannerActivity";
+  private final static String TAG = "Checker.ScannerActivity";
 
-    private int counter;
+  private int counter;
 
-    public static final String SCAN_MODES = "SCAN_MODES";
-    public static final String ERROR_INFO = "ERROR_INFO";
+  public static final String SCAN_MODES = "SCAN_MODES";
+  public static final String ERROR_INFO = "ERROR_INFO";
 
-    protected LogoutDialogFragment logoutDialog;
-    private ApiClient mClient;
+  protected LogoutDialogFragment logoutDialog;
+  private ApiClient mClient;
 
-    boolean isCameraAvailable() {
-        Log.d(TAG, "isCameraAvailable");
-        PackageManager pm = getPackageManager();
-        return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA);
+  boolean isCameraAvailable() {
+    Log.d(TAG, "isCameraAvailable");
+    PackageManager pm = getPackageManager();
+    return pm.hasSystemFeature(PackageManager.FEATURE_CAMERA);
+  }
+
+  void cancelRequest(final @NonNull String message) {
+    Log.d(TAG, "cancelRequest: " + message);
+    final Intent response = new Intent();
+    response.putExtra(ERROR_INFO, message);
+    setResult(RESULT_CANCELED, response);
+  }
+
+  @Override
+  public void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    final String appToken = getIntent().getStringExtra(MainActivity.PREF_APP_TOKEN);
+    final String token = getIntent().getStringExtra(MainActivity.PREF_POS_TOKEN);
+    final String url = getIntent().getStringExtra(MainActivity.PREF_API_URL) + "/users/";
+    mClient = new ApiClient(url, appToken, token);
+  }
+
+  /**
+   * initialize activity
+   * - removes windows title
+   * - set content view to layout id
+   *
+   * @param layoutID layout to use
+   */
+  protected final boolean init(final int layoutID) {
+    Log.d(TAG, "init");
+    if (!isCameraAvailable()) {
+      // Cancel request if there is no rear-facing camera.
+      cancelRequest("Camera unavailable");
+      return false;
+    }
+    // Hide the window title.
+    requestWindowFeature(Window.FEATURE_NO_TITLE);
+    setContentView(layoutID);
+    return true;
+  }
+
+  /**
+   * Configure toolbar of app
+   */
+  protected final void initToolbar(Intent intent) {
+
+    final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+    toolbar.setBackgroundColor((int) intent.getLongExtra(MainActivity.PREF_APP_BAR_COLOR, 0xffffff));
+    setSupportActionBar(toolbar);
+
+    final ActionBar actionBar = getSupportActionBar();
+
+    if (actionBar != null) {
+      actionBar.setTitle(null);
+      actionBar.setDisplayHomeAsUpEnabled(false);
     }
 
-    void cancelRequest(final @NonNull String message) {
-        Log.d(TAG, "cancelRequest: " + message);
-        final Intent response = new Intent();
-        response.putExtra(ERROR_INFO, message);
-        setResult(RESULT_CANCELED, response);
-    }
+    initManualInput();
+    setupSecretClickHandler(toolbar);
+  }
 
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        final String appToken = getIntent().getStringExtra(MainActivity.PREF_APP_TOKEN);
-        final String token = getIntent().getStringExtra(MainActivity.PREF_POS_TOKEN);
-        final String url = getIntent().getStringExtra(MainActivity.PREF_API_URL) + "/users/";
-        mClient = new ApiClient(url, appToken, token);
-    }
+  private void initManualInput() {
+    EditText manualInput = (EditText) findViewById(R.id.manual_input);
 
-    /**
-     * initialize activity
-     * - removes windows title
-     * - set content view to layout id
-     *
-     * @param layoutID layout to use
-     */
-    protected final boolean init(final int layoutID) {
-        Log.d(TAG, "init");
-        if (!isCameraAvailable()) {
-            // Cancel request if there is no rear-facing camera.
-            cancelRequest("Camera unavailable");
-            return false;
+
+    manualInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+      @Override
+      public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+        handleBarcode(v.getText().toString());
+        return false;
+      }
+    });
+
+  }
+
+  private void setupSecretClickHandler(final @NonNull View toolbar) {
+    // Configure increment handler
+    toolbar.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View view) {
+        if (counter == 15) {
+          switchScanner();
+        } else {
+          counter++;
         }
-        // Hide the window title.
-        requestWindowFeature(Window.FEATURE_NO_TITLE);
-        setContentView(layoutID);
-        return true;
-    }
+        Log.d(TAG, "toolbar clicked " + counter + " times");
+      }
+    });
+  }
 
-    /**
-     * Configure toolbar of app
-     */
-    protected final void initToolbar(Intent intent) {
+  private void switchScanner() {
 
-        final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
-        toolbar.setBackgroundColor((int) intent.getLongExtra(MainActivity.PREF_APP_BAR_COLOR, 0xffffff));
-        setSupportActionBar(toolbar);
+    final SharedPreferences prefs = getSharedPreferences("scanner", Context.MODE_PRIVATE);
 
-        final ActionBar actionBar = getSupportActionBar();
+    int idx = (prefs.getInt(MainActivity.SCANNER_BACKEND_KEY, 0) == MainActivity.ZXING)
+      ? MainActivity.ZBAR
+      : MainActivity.ZXING;
 
-        if (actionBar != null) {
-            actionBar.setTitle(null);
-            actionBar.setDisplayHomeAsUpEnabled(false);
-        }
+    Log.d(TAG, "switch to scanner backend " + idx + ", " + MainActivity.SCANNER_BACKEND[idx].toString());
+    prefs.edit().putInt(MainActivity.SCANNER_BACKEND_KEY, idx).apply();
 
-        initManualInput();
-        setupSecretClickHandler(toolbar);
-    }
-
-    private void initManualInput() {
-        EditText manualInput = (EditText) findViewById(R.id.manual_input);
+    cancelRequest("Scanner backend changed");
+    setResult(RESULT_OK);
+    finish();
+  }
 
 
-        manualInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
-            @Override
-            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
-                handleBarcode(v.getText().toString());
-                return false;
-            }
-        });
+  /**
+   * Adds scanner view to target frame layout
+   */
+  protected final void addScanner(final @NonNull View view, final int targetFrameId) {
+    Log.d(TAG, "addScanner");
+    final FrameLayout root = (FrameLayout) findViewById(targetFrameId);
+    root.addView(view, 0);
+  }
 
-    }
+  protected abstract View initScanner();
 
-    private void setupSecretClickHandler(final @NonNull View toolbar) {
-        // Configure increment handler
-        toolbar.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                if (counter == 15) {
-                    switchScanner();
+  public void handleBarcode(final @NonNull String card) {
+    mClient.findUser(card, new Callback() {
+      @Override
+      public void onFailure(Call call, IOException e) {
+        handleFail(card);
+      }
+      @Override
+      public void onResponse(Call call, Response response) throws IOException {
+        try {
+          ResponseBody body = response.body();
+          if (body != null) {
+            switch (response.code()) {
+              case 200:
+                final JSONArray users = new JSONArray(body.string());
+                if (users.length() > 0) {
+                  handleSuccess(card, users.get(0).toString());
                 } else {
-                    counter++;
+                  handleFail(card);
                 }
-                Log.d(TAG, "toolbar clicked " + counter + " times");
-            }
-        });
-    }
-
-    private void switchScanner() {
-
-        final SharedPreferences prefs = getSharedPreferences("scanner", Context.MODE_PRIVATE);
-
-        int idx = (prefs.getInt(MainActivity.SCANNER_BACKEND_KEY, 0) == MainActivity.ZXING)
-                ? MainActivity.ZBAR
-                : MainActivity.ZXING;
-
-        Log.d(TAG, "switch to scanner backend " + idx + ", " + MainActivity.SCANNER_BACKEND[idx].toString());
-        prefs.edit().putInt(MainActivity.SCANNER_BACKEND_KEY, idx).apply();
-
-        cancelRequest("Scanner backend changed");
-        setResult(RESULT_OK);
-        finish();
-    }
-
-
-    /**
-     * Adds scanner view to target frame layout
-     */
-    protected final void addScanner(final @NonNull View view, final int targetFrameId) {
-        Log.d(TAG, "addScanner");
-        final FrameLayout root = (FrameLayout) findViewById(targetFrameId);
-        root.addView(view, 0);
-    }
-
-    protected abstract View initScanner();
-
-    public void handleBarcode(final @NonNull String card) {
-        mClient.findUser(card, new Callback() {
-            @Override
-            public void onFailure(Call call, IOException e) {
+                break;
+              case 204:
                 handleFail(card);
+                break;
             }
-
-            @Override
-            public void onResponse(Call call, Response response) throws IOException {
-                try {
-                    ResponseBody body = response.body();
-                    if (body != null) {
-                        switch (response.code()) {
-                            case 200:
-                                final JSONArray users = new JSONArray(body.string());
-                                if (users.length() > 0) {
-                                    handleSuccess(card, users.get(0).toString());
-                                } else {
-                                    handleFail(card);
-                                }
-                                break;
-                            case 204:
-                                handleFail(card);
-                                break;
-                        }
-                    }
-                } catch (final IOException | JSONException e) {
-                    Log.e(TAG, e.getMessage(), e);
-                    handleFail(card);
-                }
-            }
-        });
-    }
-
-    protected final void handleSuccess(final String card, final String user) {
-        runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                setResult(RESULT_OK, new Intent().putExtra("user", user).putExtra("card", card));
-                finish();
-            }
-        });
-    }
-
-    protected final void handleFail(final String card) {
-        runOnUiThread(new Runnable() {
-            @Override
-            public void run() {
-                String message = String.format(getString(R.string.identifier_not_found), card)
-                        + ".\n"
-                        + String.format(getString(R.string.error_contact_support), BuildConfig.supportPhone);
-                Toast.makeText(AbstractScannerActivity.this, message, Toast.LENGTH_SHORT).show();
-            }
-        });
-    }
-
-    @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.menu, menu);
-        return true;
-    }
-
-    @Override
-    public boolean onPrepareOptionsMenu(Menu menu) {
-        menu.findItem(R.id.settings).setIcon(getResources().getDrawable(R.drawable.settings));
-        menu.findItem(R.id.faq).setIcon(getResources().getDrawable(R.drawable.help));
-        menu.findItem(R.id.logout).setIcon(getResources().getDrawable(R.drawable.logout));
-        return super.onPrepareOptionsMenu(menu);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == R.id.settings) {
-            final Intent intent = new Intent();
-            intent.putExtra("item", "settings");
-            setResult(RESULT_OK, intent);
-            finish();
-            return true;
-        } else if (item.getItemId() == R.id.logout) {
-            int color = (int) getIntent().getLongExtra(MainActivity.PREF_APP_BAR_COLOR, 0xffffff);
-            logoutDialog = LogoutDialogFragment.newInstance(color);
-            logoutDialog.show(getFragmentManager(), "logout");
-            return true;
-        } else if (item.getItemId() == R.id.faq) {
-            final Intent intent = new Intent();
-            intent.putExtra("item", "faq");
-            setResult(RESULT_OK, intent);
-            finish();
-            return true;
+          }
+        } catch (final IOException | JSONException e) {
+          Log.e(TAG, e.getMessage(), e);
+          handleFail(card);
         }
-        return super.onOptionsItemSelected(item);
-    }
+      }
+    });
+  }
 
-    void dismissDialog() {
-        if (logoutDialog != null) {
-            logoutDialog.dismiss();
-            logoutDialog = null;
-        }
-    }
-
-    void logout() {
-        final Intent intent = new Intent();
-        intent.putExtra("item", "logout");
-        setResult(RESULT_OK, intent);
+  protected final void handleSuccess(final String card, final String user) {
+    runOnUiThread(new Runnable() {
+      @Override
+      public void run() {
+        setResult(RESULT_OK, new Intent().putExtra("user", user).putExtra("card", card));
         finish();
+      }
+    });
+  }
+
+  protected final void handleFail(final String card) {
+    runOnUiThread(new Runnable() {
+      @Override
+      public void run() {
+        String message = String.format(getString(R.string.identifier_not_found), card)
+          + ".\n"
+          + String.format(getString(R.string.error_contact_support), BuildConfig.supportPhone);
+        Toast.makeText(AbstractScannerActivity.this, message, Toast.LENGTH_SHORT).show();
+      }
+    });
+  }
+
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    getMenuInflater().inflate(R.menu.menu, menu);
+    return true;
+  }
+
+  @Override
+  public boolean onPrepareOptionsMenu(Menu menu) {
+    menu.findItem(R.id.settings).setIcon(getResources().getDrawable(R.drawable.settings));
+    menu.findItem(R.id.faq).setIcon(getResources().getDrawable(R.drawable.help));
+    menu.findItem(R.id.logout).setIcon(getResources().getDrawable(R.drawable.logout));
+    return super.onPrepareOptionsMenu(menu);
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    if (item.getItemId() == R.id.settings) {
+      final Intent intent = new Intent();
+      intent.putExtra("item", "settings");
+      setResult(RESULT_OK, intent);
+      finish();
+      return true;
+    } else if (item.getItemId() == R.id.logout) {
+      int color = (int) getIntent().getLongExtra(MainActivity.PREF_APP_BAR_COLOR, 0xffffff);
+      logoutDialog = LogoutDialogFragment.newInstance(color);
+      logoutDialog.show(getFragmentManager(), "logout");
+      return true;
+    } else if (item.getItemId() == R.id.faq) {
+      final Intent intent = new Intent();
+      intent.putExtra("item", "faq");
+      setResult(RESULT_OK, intent);
+      finish();
+      return true;
+    }
+    return super.onOptionsItemSelected(item);
+  }
+
+  void dismissDialog() {
+    if (logoutDialog != null) {
+      logoutDialog.dismiss();
+      logoutDialog = null;
+    }
+  }
+
+  void logout() {
+    final Intent intent = new Intent();
+    intent.putExtra("item", "logout");
+    setResult(RESULT_OK, intent);
+    finish();
+  }
+
+  public static class LogoutDialogFragment extends DialogFragment {
+
+    static LogoutDialogFragment newInstance(int color) {
+      LogoutDialogFragment f = new LogoutDialogFragment();
+      Bundle bundle = new Bundle();
+      bundle.putInt(MainActivity.PREF_APP_BAR_COLOR, color);
+      f.setArguments(bundle);
+      return f;
     }
 
-    public static class LogoutDialogFragment extends DialogFragment {
-
-        static LogoutDialogFragment newInstance(int color) {
-            LogoutDialogFragment f = new LogoutDialogFragment();
-            Bundle bundle = new Bundle();
-            bundle.putInt(MainActivity.PREF_APP_BAR_COLOR, color);
-            f.setArguments(bundle);
-            return f;
-        }
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+      final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+      final LayoutInflater inflater = getActivity().getLayoutInflater();
+      final View content = inflater.inflate(R.layout.f_logout_dialog, null);
+      builder.setView(content);
+      final TextView positiveButton = (TextView) content.findViewById(R.id.positiveButton);
+      final TextView negativeButton = (TextView) content.findViewById(R.id.negativeButton);
+      // Можно делать через стили, но я не уверен, что необходимо в нашем случае
+      positiveButton.setTextColor(getArguments().getInt(MainActivity.PREF_APP_BAR_COLOR));
+      negativeButton.setTextColor(getArguments().getInt(MainActivity.PREF_APP_BAR_COLOR));
 
+      negativeButton.setOnClickListener(new View.OnClickListener() {
         @Override
-        public Dialog onCreateDialog(Bundle savedInstanceState) {
-            final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
-            final LayoutInflater inflater = getActivity().getLayoutInflater();
-            final View content = inflater.inflate(R.layout.f_logout_dialog, null);
-            builder.setView(content);
-            final TextView positiveButton = (TextView) content.findViewById(R.id.positiveButton);
-            final TextView negativeButton = (TextView) content.findViewById(R.id.negativeButton);
-            // Можно делать через стили, но я не уверен, что необходимо в нашем случае
-            positiveButton.setTextColor(getArguments().getInt(MainActivity.PREF_APP_BAR_COLOR));
-            negativeButton.setTextColor(getArguments().getInt(MainActivity.PREF_APP_BAR_COLOR));
-
-            negativeButton.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View view) {
-                    ((AbstractScannerActivity) getActivity()).dismissDialog();
-                }
-            });
-
-            positiveButton.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View view) {
-                    ((AbstractScannerActivity) getActivity()).logout();
-                }
-            });
-
-            return builder.create();
+        public void onClick(View view) {
+          ((AbstractScannerActivity) getActivity()).dismissDialog();
         }
+      });
+
+      positiveButton.setOnClickListener(new View.OnClickListener() {
+        @Override
+        public void onClick(View view) {
+          ((AbstractScannerActivity) getActivity()).logout();
+        }
+      });
+
+      return builder.create();
     }
+  }
 }
diff --git a/android/app/src/main/java/com/dinect/checker/MainActivity.java b/android/app/src/main/java/com/dinect/checker/MainActivity.java
index 2e19649..49a106a 100644
--- a/android/app/src/main/java/com/dinect/checker/MainActivity.java
+++ b/android/app/src/main/java/com/dinect/checker/MainActivity.java
@@ -65,6 +65,7 @@ public class MainActivity extends FlutterActivity {
                 break;
             case "startScanner":
                 mScannerArgs = call.arguments();
+                System.out.println(mScannerArgs.toString());
                 startScannerActivity();
                 break;
             case "isOnline":
diff --git a/lib/base/base_state.dart b/lib/base/base_state.dart
index e099f64..b1a65a7 100644
--- a/lib/base/base_state.dart
+++ b/lib/base/base_state.dart
@@ -139,7 +139,8 @@ abstract class BaseState<T extends StatefulWidget> extends State<T> {
     return new Container(margin: new EdgeInsets.only(left: verticalMargin, right: verticalMargin),
         padding: getInputFieldContainerPadding(),
         decoration: getInputFieldContainerDecoration(),
-        child: getTextWidget());
+        child: getTextWidget()
+    );
   }
 
   /// Возвращает поле ввода.
@@ -203,4 +204,4 @@ abstract class BaseState<T extends StatefulWidget> extends State<T> {
   Widget wrapButton(EdgeInsets margin, Widget widget) {
     return new Container(margin: margin, height: buttonHeight, child: new Row(children: <Widget>[new Expanded(child: widget)]));
   }
-}
\ No newline at end of file
+}
diff --git a/lib/common.dart b/lib/common.dart
index d7c46ff..744445b 100644
--- a/lib/common.dart
+++ b/lib/common.dart
@@ -144,6 +144,7 @@ startScanner(BuildContext context, String app, SqliteHelper helper) async {
           String userString = call.arguments[0];
           print(userString);
           String card = call.arguments[1];
+          print('$userString, $card');
           var route = new MaterialPageRoute<Null>(
               builder: (BuildContext context) =>
                   new PurchaseScreen(helper, app, userString, card));
@@ -155,7 +156,7 @@ startScanner(BuildContext context, String app, SqliteHelper helper) async {
       });
 
       platform.invokeMethod('startScanner', {
-        'token': await platform.invokeMethod('getAppToken'),
+        'token': token,
         'url': await platform.invokeMethod('getEndpoint'),
         'appToken': await platform.invokeMethod('getAppToken'),
         'locale': Intl.defaultLocale,
diff --git a/lib/i18n/messages_en.dart b/lib/i18n/messages_en.dart
index e95445f..5868bb2 100644
--- a/lib/i18n/messages_en.dart
+++ b/lib/i18n/messages_en.dart
@@ -40,6 +40,8 @@ class MessageLookup extends MessageLookupByLibrary {
     "discount_sum" : MessageLookupByLibrary.simpleMessage("Dicount Sum"),
     "bonus_plus" : MessageLookupByLibrary.simpleMessage("Bonus points"),
     "bonus_minus" : MessageLookupByLibrary.simpleMessage("Bonus was charged"),
+    "bonus_hint" : MessageLookupByLibrary.simpleMessage("Points to charge"),
+    "bonus_explanation" : MessageLookupByLibrary.simpleMessage("If not set, points will be added"),
     "scan" : MessageLookupByLibrary.simpleMessage("Scan"),
     "sign_up" : MessageLookupByLibrary.simpleMessage("Sign Up"),
     "specify_din_store" : MessageLookupByLibrary.simpleMessage("Specify the store ID"),
diff --git a/lib/i18n/messages_ru.dart b/lib/i18n/messages_ru.dart
index d2d6acb..989f96c 100644
--- a/lib/i18n/messages_ru.dart
+++ b/lib/i18n/messages_ru.dart
@@ -40,6 +40,8 @@ class MessageLookup extends MessageLookupByLibrary {
     "discount_sum" : MessageLookupByLibrary.simpleMessage("Сумма скидки"),
     "bonus_plus" : MessageLookupByLibrary.simpleMessage("Бонусов начислено"),
     "bonus_minus" : MessageLookupByLibrary.simpleMessage("Бонусов списано"),
+    "bonus_hint" : MessageLookupByLibrary.simpleMessage("Сколько баллов списать?"),
+    "bonus_explanation" : MessageLookupByLibrary.simpleMessage("Если не указано сколько баллов списать, баллы будут начислены"),
     "scan" : MessageLookupByLibrary.simpleMessage("Сканировать"),
     "sign_up" : MessageLookupByLibrary.simpleMessage("Зарегистрироваться"),
     "specify_din_store" : MessageLookupByLibrary.simpleMessage("Необходимо указать ID магазина"),
diff --git a/lib/screens/purchase.dart b/lib/screens/purchase.dart
index e01c4ea..9181c4f 100644
--- a/lib/screens/purchase.dart
+++ b/lib/screens/purchase.dart
@@ -31,6 +31,8 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
   /// (удаляет запрещенные символы до их отображаения).
   TextEditingController controller = new TextEditingController();
 
+  TextEditingController bonusController = new TextEditingController();
+
   PurchaseScreenState(SqliteHelper helper, String app, String userString, String card) {
     this.user = JSON.decode(userString);
     this.card = card;
@@ -62,13 +64,19 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
     ));
     widgets.add(getValueWithDescription(StringsLocalization.card(), card));
 
+    widgets.add(getValueWithDescription(StringsLocalization.reward(), loyalty));
+
     if (bonus.length > 0) {
       widgets.add(getValueWithDescription(StringsLocalization.bonus(), bonus));
     }
 
-    widgets.add(getValueWithDescription(StringsLocalization.reward(), loyalty));
     widgets.add(getHintLabel());
-    widgets.add(getInputField());
+
+    widgets.add(getInputField()); // Нельзя добавить еще одно поле таким же способом
+
+    widgets.add(getBonusInputField());
+
+
     widgets.add(wrapButton(getScreenMargins(36.0), getCompleteButton()));
     widgets.add(wrapButton(
         getScreenMargins(24.0),
@@ -84,6 +92,47 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
     ]);
   }
 
+  getBonusInputField() {
+    return new Column(
+      children: <Widget>[
+        new Container(
+          margin: new EdgeInsets.only(
+            left: verticalMargin,
+            right: verticalMargin,
+            top: verticalMargin
+          ),
+          padding: getInputFieldContainerPadding(),
+          decoration: getInputFieldContainerDecoration(),
+          child: new TextField(
+            keyboardType: TextInputType.number,
+            decoration: new InputDecoration.collapsed(
+            hintText: StringsLocalization.bonusHint(),
+            hintStyle: new TextStyle(color: greyTextColor, fontSize: 16.0)),
+            controller: bonusController,
+            onSubmitted: (String text) {
+              setState(() {
+                bonusController.text = text;
+              });
+            },
+            textAlign: TextAlign.center,
+            autofocus: true,
+          )
+        ),
+        new Container(
+          margin: new EdgeInsets.only(
+            top: 5.0
+          ),
+          child: new Text(
+            StringsLocalization.bonusExplanation(),
+            textAlign: TextAlign.center,
+            overflow: TextOverflow.ellipsis,
+            style: new TextStyle(color: greyTextColor, fontSize: 11.0),
+          )
+        )
+      ],
+    );
+  }
+
   getScreenMargins(double top) {
     double side = 42.0;
     return new EdgeInsets.only(top: top, left: side, right: side);
@@ -118,6 +167,7 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
 
   @override
   getTextWidget() {
+    // ?? TODO переделать, т.к. позволяет иметь только одно поле ввода на странице
     return new TextField(
       keyboardType: TextInputType.number,
       decoration: new InputDecoration.collapsed(
@@ -195,7 +245,9 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
           child: new AlertDialog(
               title: new Text(StringsLocalization.confirmation()),
               content:
-              new Text(StringsLocalization.confirmPurchase(val, currency)),
+              new Text(
+                StringsLocalization.confirmPurchase(val, currency)
+              ),
               actions: <Widget>[
                 new FlatButton(
                   child: new Text(StringsLocalization.no()),
@@ -213,6 +265,24 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
     });
   }
 
+  apiErrorAlert(String errorText) {
+    showDialog(
+      context: context,
+      child: new AlertDialog(
+        //title: new Text(StringsLocalization.()),
+        content: new Text(errorText),
+        actions: <Widget>[
+          new FlatButton(
+            child: new Text('Ok'),
+            onPressed: () {
+              Navigator.of(context).pop();
+            },
+          )
+        ]
+      )
+    );
+  }
+
   purchase(String sumTotal) async {
     if (await platform.invokeMethod('isOnline')) {
       if (!purchaseInProgress) {
@@ -229,17 +299,28 @@ class PurchaseScreenState<T> extends BaseState<PurchaseScreen> {
           'sum_total': sumTotal
         };
 
+        if (bonusController.text.length > 0) {
+          body['bonus_payment'] = bonusController.text;
+        }
+
+        print(body['bonus_payment']);
+
         var purchaseResponse;
+        Map purchase;
 
         try {
           purchaseResponse = await getPurchaseRequest(user['purchases_url'], body, token);
-          print(purchaseResponse.body);
+          purchase = JSON.decode(purchaseResponse.body);
+          if (purchase['errors'] is List && purchase['errors'].length > 0) {
+            print(purchase['errors'][0]);
+            //Navigator.of(context).pop();
+            apiErrorAlert(purchase['errors'][0]);
+          }
         } catch(error) {
           purchaseInProgress = false;
           print(error.toString());
-        }
 
-        Map purchase = JSON.decode(purchaseResponse.body);
+        }
 
         Navigator.of(context).pop();
 
diff --git a/lib/strings.dart b/lib/strings.dart
index 7c22c25..8555bd2 100644
--- a/lib/strings.dart
+++ b/lib/strings.dart
@@ -101,6 +101,8 @@ class StringsLocalization {
   static String completePurchase() => Intl.message('complite_purchase', name: 'complite_purchase', locale: Intl.defaultLocale);
   static String scan() => Intl.message('scan', name: 'scan', locale: Intl.defaultLocale);
   static String buyer() => Intl.message('buyer', name: 'buyer', locale: Intl.defaultLocale);
+  static String bonusHint() => Intl.message('bonus_hint', name: 'bonus_hint', locale: Intl.defaultLocale);
+  static String bonusExplanation() => Intl.message('bonus_explanation', name: 'bonus_explanation', locale: Intl.defaultLocale);
   static String discountRate() => Intl.message('discount_rate', name: 'discount_rate', locale: Intl.defaultLocale);
   static String discountSum() => Intl.message('discount_sum', name: 'discount_sum', locale: Intl.defaultLocale);
   static String bonusPlus() => Intl.message('bonus_plus', name: 'bonus_plus', locale: Intl.defaultLocale);