Android implementation

android/src/main/java/com/op/sqlite/OPSQLiteModule.kt

@@ -3,6 +3,10 @@ package com.op.sqlite
 import com.facebook.react.bridge.ReactApplicationContext
 import com.facebook.react.bridge.ReactMethod
 import com.facebook.react.module.annotations.ReactModule;
+import java.io.File
+import java.io.FileOutputStream
+import java.io.InputStream
+import java.io.OutputStream
 
 @ReactModule(name = OPSQLiteModule.NAME)
 internal class OPSQLiteModule(context: ReactApplicationContext?) :
@@ -38,6 +42,49 @@ internal class OPSQLiteModule(context: ReactApplicationContext?) :
         }
     }
 
+    @ReactMethod(isBlockingSynchronousMethod = true)
+    override fun moveAssetsDatabase(name: String, extension: String): Boolean {
+        val context = reactApplicationContext
+        val assetsManager = context.assets
+
+        try {
+
+//            val assets = assetsManager.list("");
+            // Open the input stream for the asset file
+            val inputStream: InputStream = assetsManager.open("custom/$name.$extension")
+
+            // Create the output file in the documents directory
+            val databasesFolder = context
+                .getDatabasePath("defaultDatabase")
+                .absolutePath
+                .replace("defaultDatabase", "")
+
+            val outputFile = File(databasesFolder, "$name.$extension")
+
+            if (outputFile.exists()) {
+                return true
+            }
+
+            // Open the output stream for the output file
+            val outputStream: OutputStream = FileOutputStream(outputFile)
+
+            // Copy the contents from the input stream to the output stream
+            val buffer = ByteArray(1024)
+            var length: Int
+            while (inputStream.read(buffer).also { length = it } > 0) {
+                outputStream.write(buffer, 0, length)
+            }
+
+            // Close the streams
+            inputStream.close()
+            outputStream.close()
+
+            return true
+        } catch (exception: Exception) {
+            return false
+        }
+    }
+
     override fun onCatalystInstanceDestroy() {
         OPSQLiteBridge.instance.clearState()
     }

android/src/paper/java/com/op/sqlite/NativeOPSQLiteSpec.java

@@ -70,4 +70,8 @@ public NativeOPSQLiteSpec(ReactApplicationContext reactContext) {
   @ReactMethod(isBlockingSynchronousMethod = true)
   @DoNotStrip
   public abstract boolean install();
+
+  @ReactMethod(isBlockingSynchronousMethod = true)
+  @DoNotStrip
+  public abstract boolean moveAssetsDatabase(String name, String extension);
 }

example/src/App.tsx

@@ -96,6 +96,9 @@ export default function App() {
   const openAssetsDb = async () => {
     const moved = moveAssetsDatabase('sample', 'sqlite');
     console.log('moved', moved);
+    const db = open({name: 'sample.sqlite'});
+    const users = db.execute('SELECT * FROM User');
+    console.log('users', users.rows?._array);
   };
 
   const allTestsPassed = results.reduce((acc: boolean, r: any) => {