Configurable encoded codes prefix/seperator/suffix

Author: ajungg

core/src/main/java/io/snabble/sdk/SnabbleSdk.java

@@ -118,6 +118,10 @@ public static class Config {
          */
         public boolean productDbDownloadIfMissing = true;
 
+        public String encodedCodesPrefix = null;
+        public String encodedCodesSeperator = null;
+        public String encodedCodesSuffix = null;
+
         public RoundingMode roundingMode = RoundingMode.HALF_UP;
     }
 
@@ -150,6 +154,10 @@ public static class Config {
     private String[] weighPrefixes = new String[0];
     private String[] unitPrefixes = new String[0];
 
+    private String encodedCodesPrefix = null;
+    private String encodedCodesSeperator = null;
+    private String encodedCodesSuffix = null;
+
     private RoundingMode roundingMode;
 
     private SnabbleSdk() {
@@ -248,6 +256,10 @@ private void init(final Application app,
 
         roundingMode = config.roundingMode != null ? config.roundingMode : RoundingMode.HALF_UP;
 
+        encodedCodesPrefix = config.encodedCodesPrefix != null ? config.encodedCodesPrefix : "";
+        encodedCodesSeperator = config.encodedCodesSeperator != null ? config.encodedCodesSeperator : "\n";
+        encodedCodesSuffix = config.encodedCodesSuffix != null ? config.encodedCodesSuffix : "";
+
         updateShops();
 
         if (config.bundledMetadataAssetPath != null) {
@@ -446,6 +458,18 @@ public String[] getUnitPrefixes() {
         return unitPrefixes;
     }
 
+    public String getEncodedCodesPrefix() {
+        return encodedCodesPrefix;
+    }
+
+    public String getEncodedCodesSeperator() {
+        return encodedCodesSeperator;
+    }
+
+    public String getEncodedCodesSuffix() {
+        return encodedCodesSuffix;
+    }
+
     String absoluteUrl(String url) {
         if (url.startsWith("http")) {
             return url;

sample/src/main/java/io/snabble/testapp/App.java

@@ -62,6 +62,9 @@ public void init(final InitCallback callback) {
         config.productDbBundledSchemaVersionMajor = getBundledMajor();
         config.productDbBundledSchemaVersionMinor = getBundledMinor();
         config.productDbDownloadIfMissing = false;
+        config.encodedCodesPrefix = "";
+        config.encodedCodesSeperator = "\n";
+        config.encodedCodesSuffix = "";
 
         SnabbleSdk.setup(this, config, new SnabbleSdk.SetupCompletionListener() {
             @Override

ui/src/main/java/io/snabble/sdk/ui/checkout/CheckoutEncodedCodesView.java

@@ -26,6 +26,7 @@ class CheckoutEncodedCodesView extends FrameLayout implements View.OnLayoutChang
     private View scrollContainer;
     private ScrollView scrollView;
     private TextView explanationText;
+    private SnabbleSdk sdkInstance;
 
     public CheckoutEncodedCodesView(Context context) {
         super(context);
@@ -48,7 +49,7 @@ private void inflateView() {
         scrollContainer = findViewById(R.id.scroll_container);
         scrollView = findViewById(R.id.scroll_view);
 
-        SnabbleSdk sdkInstance = SnabbleUI.getSdkInstance();
+        sdkInstance = SnabbleUI.getSdkInstance();
         ShoppingCart shoppingCart = sdkInstance.getShoppingCart();
 
         Button paidButton = findViewById(R.id.paid);
@@ -121,33 +122,34 @@ public CodeListView(@NonNull Context context) {
 
             stringBuilder = new StringBuilder();
 
-            SnabbleSdk sdkInstance = SnabbleUI.getSdkInstance();
             Checkout checkout = sdkInstance.getCheckout();
             ShoppingCart shoppingCart = sdkInstance.getShoppingCart();
 
             int h = scrollContainer.getHeight();
             barcodeHeight = h - h / 5;
 
             for (String code : checkout.getCodes()) {
-                addLine(code);
+                addScannableCode(code);
             }
 
             for (int i = 0; i < shoppingCart.size(); i++) {
                 for (int j = 0; j < shoppingCart.getQuantity(i); j++) {
-                    addLine(shoppingCart.getScannedCode(i));
+                    addScannableCode(shoppingCart.getScannedCode(i));
                 }
             }
 
             if(getChildCount() == 0){
                 barcodeHeight = h;
             }
 
-            addCode(stringBuilder.toString());
-
+            generateView();
             updateExplanationText(getChildCount());
         }
 
-        private void addCode(String code) {
+        private void generateView() {
+            stringBuilder.append(sdkInstance.getEncodedCodesSuffix());
+            String code = stringBuilder.toString();
+
             BarcodeView barcodeView = new BarcodeView(getContext());
             barcodeView.setFormat(BarcodeFormat.QR_CODE);
 
@@ -163,13 +165,19 @@ private void addCode(String code) {
             stringBuilder = new StringBuilder();
         }
 
-        private void addLine(String line) {
-            if (stringBuilder.length() + (line.length() + 1) > MAX_CHARS) {
-                addCode(stringBuilder.toString());
+        private void addScannableCode(String scannableCode) {
+            int requiredLength = scannableCode.length() + sdkInstance.getEncodedCodesSuffix().length() + 1;
+            if (stringBuilder.length() + (requiredLength) > MAX_CHARS) {
+                generateView();
+            }
+
+            if(stringBuilder.length() == 0){
+                stringBuilder.append(sdkInstance.getEncodedCodesPrefix());
+            } else {
+                stringBuilder.append(sdkInstance.getEncodedCodesSeperator());
             }
 
-            stringBuilder.append(line);
-            stringBuilder.append("\n");
+            stringBuilder.append(scannableCode);
         }
     }
 }