Add and broadcast translation chunks version

composeApp/src/commonMain/kotlin/press/mantra/compose/database/dao/MantraDao.kt

@@ -309,6 +309,7 @@ abstract class MantraDao(
         }
     }
 
+    @Transaction
     open suspend fun addTranslationArtifactVersion(
         artifactId: String,
         dialectId: String,
@@ -433,6 +434,65 @@ abstract class MantraDao(
         }
     }
 
+    @Transaction
+    open suspend fun saveTranslation(
+        translationChapterId: String,
+        chunkId: String,
+        text: String,
+        chatRoomId: String,
+        userPublicKey: HexKey,
+    ): MantraTranslationChunk? {
+        // The translation chunk mirrors the source chunk's position.
+        val sourceChunk = database.mantraChunkDao().getChunkById(chunkId) ?: return null
+
+        val translationChunkTemplate = TranslationChunkEvent.build(
+            translationChapterId = translationChapterId,
+            chunkId = chunkId,
+            index = sourceChunk.index,
+            text = text,
+        )
+        val translationChunk = MantraTranslationChunk.fromTranslationChunkEventTemplate(
+            translationChunkEventTemplate = translationChunkTemplate,
+            chatRoomId = chatRoomId,
+            userPublicKey = userPublicKey,
+        ) ?: return null
+
+        return try {
+            // Replace any existing translation chunk for this source chunk. Its id
+            // is derived from the (now changed) content, so it becomes a new row —
+            // drop the old one (and its rumor) to keep one per source chunk.
+            database.mantraTranslationChunkDao()
+                .getTranslationChunksByTranslationChapterId(translationChapterId)
+                .filter { it.chunkId == chunkId && it.id != translationChunk.id }
+                .forEach { stale ->
+                    database.mantraTranslationChunkDao().deleteById(stale.id)
+                    database.marmotInnerEventDao().deleteById(stale.id)
+                }
+
+            database.mantraTranslationChunkDao().upsert(translationChunk)
+            val translationChunkInnerEvent = MarmotInnerEvent(
+                id = translationChunk.id,
+                publicKey = translationChunk.publicKey,
+                kind = TranslationChunkEvent.KIND,
+                createdAt = translationChunk.createdAt,
+                tags = translationChunkTemplate.tags,
+                content = translationChunkTemplate.content,
+                chatRoomId = translationChunk.chatRoomId,
+            )
+            sendMarmotInnerEvent(
+                chatRoomId = chatRoomId,
+                userPublicKey = userPublicKey,
+                text = "Translated chunk ${translationChunk.index}", // TODO: Use a portion of the translation and name the language
+                marmotInnerEvent = translationChunkInnerEvent
+            )
+
+            translationChunk
+        } catch (error: Throwable) {
+            logger.e("Failed to save translation for chunk $chunkId", error)
+            null
+        }
+    }
+
     private suspend fun sendMarmotInnerEvent(
         localChatRoom: LocalChatRoom,
         text: String,

composeApp/src/commonMain/kotlin/press/mantra/compose/database/repository/DatabaseMantraRepository.kt

@@ -69,51 +69,13 @@ class DatabaseMantraRepository(
         chatRoomId: String,
         userPublicKey: HexKey,
     ): MantraTranslationChunk? {
-        // The translation chunk mirrors the source chunk's position.
-        val sourceChunk = database.mantraChunkDao().getChunkById(chunkId) ?: return null
-
-        val translationChunkTemplate = TranslationChunkEvent.build(
+        return database.mantraDao().saveTranslation(
             translationChapterId = translationChapterId,
             chunkId = chunkId,
-            index = sourceChunk.index,
             text = text,
-        )
-        val translationChunk = MantraTranslationChunk.fromTranslationChunkEventTemplate(
-            translationChunkEventTemplate = translationChunkTemplate,
             chatRoomId = chatRoomId,
-            userPublicKey = userPublicKey,
-        ) ?: return null
-
-        return try {
-            // Replace any existing translation chunk for this source chunk. Its id
-            // is derived from the (now changed) content, so it becomes a new row —
-            // drop the old one (and its rumor) to keep one per source chunk.
-            database.mantraTranslationChunkDao()
-                .getTranslationChunksByTranslationChapterId(translationChapterId)
-                .filter { it.chunkId == chunkId && it.id != translationChunk.id }
-                .forEach { stale ->
-                    database.mantraTranslationChunkDao().deleteById(stale.id)
-                    database.marmotInnerEventDao().deleteById(stale.id)
-                }
-
-            database.mantraTranslationChunkDao().upsert(translationChunk)
-            database.marmotInnerEventDao().upsert(
-                MarmotInnerEvent(
-                    id = translationChunk.id,
-                    publicKey = translationChunk.publicKey,
-                    kind = TranslationChunkEvent.KIND,
-                    createdAt = translationChunk.createdAt,
-                    tags = translationChunkTemplate.tags,
-                    content = translationChunkTemplate.content,
-                    chatRoomId = translationChunk.chatRoomId,
-                )
-            )
-
-            translationChunk
-        } catch (error: Throwable) {
-            logger.e("Failed to save translation for chunk $chunkId", error)
-            null
-        }
+            userPublicKey = userPublicKey
+        )
     }
 
     override suspend fun getTranslationsForArtifact(artifactId: String): List<MantraTranslationArtifactVersion> =