From 81661c003af5b2008ba5d0c80876c4bf4d7170eb Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Wed, 22 Nov 2023 11:40:12 -0500
Subject: [PATCH] Fixes the writting of nostr addresses in the text with
 additional words connected to them without a space. It adds a space if the
 first char is in the bech alphabet.

---
 .../amethyst/ui/actions/NewMessageTagger.kt   | 21 +++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt b/app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt
index 1176b793a..e4e38c7d9 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/ui/actions/NewMessageTagger.kt
@@ -4,6 +4,7 @@ import androidx.compose.runtime.Immutable
 import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.quartz.crypto.KeyPair
+import com.vitorpamplona.quartz.encoders.Bech32
 import com.vitorpamplona.quartz.encoders.HexKey
 import com.vitorpamplona.quartz.encoders.Nip19
 import com.vitorpamplona.quartz.encoders.bechToBytes
@@ -69,19 +70,19 @@ class NewMessageTagger(
                 if (results?.key?.type == Nip19.Type.USER) {
                     val user = dao.getOrCreateUser(results.key.hex)
 
-                    "nostr:${user.pubkeyNpub()}${results.restOfWord}"
+                    getNostrAddress(user.pubkeyNpub(), results.restOfWord)
                 } else if (results?.key?.type == Nip19.Type.NOTE) {
                     val note = dao.getOrCreateNote(results.key.hex)
 
-                    "nostr:${note.toNEvent()}${results.restOfWord}"
+                    getNostrAddress(note.toNEvent(), results.restOfWord)
                 } else if (results?.key?.type == Nip19.Type.EVENT) {
                     val note = dao.getOrCreateNote(results.key.hex)
 
-                    "nostr:${note.toNEvent()}${results.restOfWord}"
+                    getNostrAddress(note.toNEvent(), results.restOfWord)
                 } else if (results?.key?.type == Nip19.Type.ADDRESS) {
                     val note = dao.checkGetOrCreateAddressableNote(results.key.hex)
                     if (note != null) {
-                        "nostr:${note.idNote()}${results.restOfWord}"
+                        getNostrAddress(note.idNote(), results.restOfWord)
                     } else {
                         word
                     }
@@ -92,6 +93,18 @@ class NewMessageTagger(
         }.joinToString("\n")
     }
 
+    fun getNostrAddress(bechAddress: String, restOfTheWord: String): String {
+        return if (restOfTheWord.isEmpty()) {
+            "nostr:$bechAddress"
+        } else {
+            if (Bech32.alphabet.contains(restOfTheWord.get(0), true)) {
+                "nostr:$bechAddress $restOfTheWord"
+            } else {
+                "nostr:${bechAddress}$restOfTheWord"
+            }
+        }
+    }
+
     @Immutable
     data class DirtyKeyInfo(val key: Nip19.Return, val restOfWord: String)