fix bug (if json is empty)

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath 'com.android.tools.build:gradle:3.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

library/src/main/java/com/dfmabbas/reactor/engine/EngineModel.kt

@@ -10,14 +10,15 @@ internal class EngineModel(private val appContext: Context,
                            private val scope: String) {
 
     private val path = appContext.getPath()
+    private val firstDataJson = "{is:true}"
 
     internal fun makeDatabase(): Boolean {
         return File(path + scope).mkdir()
     }
 
     internal fun makeDocument(name: String): Boolean {
         val file = File("$path$scope/$name.json")
-        return writeJSON(file, JSONObject("{is:true}"))
+        return writeJSON(file, JSONObject(firstDataJson))
     }
 
     internal fun isDatabase(): Boolean {
@@ -61,10 +62,13 @@ internal class EngineModel(private val appContext: Context,
 
         fileInputStream.read(buffer)
 
-        val value = String(buffer, Charsets.UTF_8)
+        var value = String(buffer, Charsets.UTF_8)
 
         fileInputStream.close()
 
+        if (value.isEmpty())
+            value = firstDataJson
+
         return JSONObject(value)
     }
 }

sample/src/main/java/com/dfmabbas/sample/KotlinSample.kt

@@ -50,6 +50,5 @@ class KotlinSample : Fragment() {
 
 //        reactor.remove("age", 0)
 //        reactor.clearAll()
-
     }
 }