Now saves the most recently used config folder path and reuses that

src/main/kotlin/DataStore.kt

@@ -0,0 +1,39 @@
+import org.json.simple.JSONObject
+import org.json.simple.parser.JSONParser
+import java.io.File
+import java.io.FileReader
+import java.io.FileWriter
+import java.lang.Exception
+
+object DataStore {
+    val savePath = File(System.getProperty("user.home") + File.separator + ".thanos_tool")
+
+    var LastConfigPath: String = System.getProperty("user.home")
+
+    fun parse() {
+        if(!savePath.exists()){
+            savePath.mkdirs()
+            return
+        }
+        try {
+            val reader = FileReader(savePath.toString() + File.separator + "settings.json")
+            val parser = JSONParser().parse(reader) as JSONObject
+
+            if (parser.containsKey("lastConfigPath")) {
+                LastConfigPath = parser["lastConfigPath"].toString()
+            }
+        } catch (ignored: Exception) {}
+    }
+
+    fun save() {
+        val obj = JSONObject()
+        obj["lastConfigPath"] = LastConfigPath
+        Logger.logInfo("Saving user preferences...")
+        FileWriter(savePath.toString() + File.separator + "settings.json").use {
+            it.write(obj.toJSONString())
+            it.flush()
+            it.close()
+            Logger.logInfo("User preferences saved!")
+        }
+    }
+}

src/main/kotlin/MainScreen.kt

@@ -9,7 +9,7 @@ import javax.swing.*
 import javax.swing.table.DefaultTableModel
 
 object MainScreen : JFrame("RS09 Thanos Tool") {
-    val dirChooser = object : JFileChooser(){
+    val dirChooser = object : JFileChooser(DataStore.LastConfigPath){
         override fun updateUI() {
             EditorConstants.updateTheme()
             super.updateUI()
@@ -53,6 +53,7 @@ object MainScreen : JFrame("RS09 Thanos Tool") {
                 showLoaded()
                 if(loadedModel.rowCount > 0) {
                     selectDir.isEnabled = false
+                    DataStore.LastConfigPath = EditorConstants.CONFIG_PATH
                 }
             }
         }
@@ -142,5 +143,9 @@ fun showLoaded(){
 }
 
 fun main() {
+    DataStore.parse()
+    Runtime.getRuntime().addShutdownHook(Thread {
+        DataStore.save()
+    })
     MainScreen.isVisible = true
 }