From b128bb895d43dfb97ddb4625425b975182753e5d Mon Sep 17 00:00:00 2001
From: Craig Raw <craigraw@gmail.com>
Date: Fri, 5 Apr 2024 13:49:13 +0200
Subject: [PATCH] add support for creating seedqr string

---
 .../com/sparrowwallet/drongo/wallet/SeedQR.java    | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/main/java/com/sparrowwallet/drongo/wallet/SeedQR.java b/src/main/java/com/sparrowwallet/drongo/wallet/SeedQR.java
index e26c06e..485dacd 100644
--- a/src/main/java/com/sparrowwallet/drongo/wallet/SeedQR.java
+++ b/src/main/java/com/sparrowwallet/drongo/wallet/SeedQR.java
@@ -30,6 +30,20 @@ public class SeedQR {
         return new DeterministicSeed(words, null, System.currentTimeMillis(), DeterministicSeed.Type.BIP39);
     }
 
+    public static String getSeedQR(DeterministicSeed seed) {
+        if(seed.isEncrypted()) {
+            throw new IllegalStateException("Seed cannot be encrypted");
+        }
+
+        StringBuilder builder = new StringBuilder();
+        for(String word : seed.getMnemonicCode()) {
+            int index = Bip39MnemonicCode.INSTANCE.getWordList().indexOf(word);
+            builder.append(String.format("%04d", index));
+        }
+
+        return builder.toString();
+    }
+
     public static DeterministicSeed getSeed(byte[] compactSeedQr) {
         byte[] seed;