Check for OS and refactor Application

src/main/kotlin/org/bm00/DataAccessor/Application.kt

@@ -0,0 +1,47 @@
+package org.bm00.DataAccessor
+
+import jexer.TApplication
+import org.bm00.DataAccessor.windows.WelcomeWindow
+
+enum class OS {
+    WINDOWS, LINUX, MAC, SOLARIS
+}
+
+fun getOS(): OS? {
+    val os = System.getProperty("os.name").toLowerCase()
+    return when {
+        os.contains("win") -> {
+            OS.WINDOWS
+        }
+        os.contains("nix") || os.contains("nux") || os.contains("aix") -> {
+            OS.LINUX
+        }
+        os.contains("mac") -> {
+            OS.MAC
+        }
+        os.contains("sunos") -> {
+            OS.SOLARIS
+        }
+        else -> null
+    }
+}
+
+
+// Set Jexer backend type
+// Possible answers: SWING, XTERM, ECMA48
+val backendType =
+    when (getOS())
+    {
+        OS.WINDOWS -> TApplication.BackendType.SWING
+        OS.LINUX -> TApplication.BackendType.SWING
+        OS.MAC -> TApplication.BackendType.SWING
+        OS.SOLARIS -> TApplication.BackendType.SWING
+        else -> throw Exception("Improper Backend set! Please use `SWING, XTERM, ECMA48`!")
+    }
+
+// Create Jexer Application
+class Application : TApplication(backendType, 80, 40, 18) {
+    init {
+        WelcomeWindow(this)
+    }
+}

src/main/kotlin/org/bm00/DataAccessor/Config.kt

@@ -33,7 +33,6 @@ class Config {
             FileInputStream(confFile).use {
                 prop.load(it)
                 prop.setProperty("configVersion", "1")
-                prop.setProperty("backendType", "SWING")
             }
             val out: OutputStream = FileOutputStream(confFile)
             prop.store(out, "Org Secure Data Accessor - OSDA Config file")
@@ -41,27 +40,5 @@ class Config {
     }
     //Convert values from the config file to in-code variables,
     // so we can use them later, also make them public because I said so.
-    val configVersion =
-        if ((prop.getProperty("configVersion")).toInt() == 1) {
-            println("Correct config version set!")
-        }
-        else {
-            throw Exception("The config version is not correct! Correct version is: " + 1)
-        }
-
-    //TODO: Later instead of being user configurable, change this based on the environemtn launched, and allow CMDLine args to change on runtime
-    // Possible answers: SWING, XTERM, ECMA48
-    val backendType =
-        if (prop.getProperty("backendType") == "SWING") {
-            TApplication.BackendType.SWING
-        }
-        else if (prop.getProperty("backendType") == "XTERM") {
-            TApplication.BackendType.XTERM
-        }
-        else if (prop.getProperty("backendType") == "ECMA48") {
-            TApplication.BackendType.ECMA48
-        }
-        else {
-            throw Exception("Improper Backend set! Please use `SWING, XTERM, ECMA48`!")
-        }
+    val configVersion = (prop.getProperty("configVersion")).toInt()
 }

src/main/kotlin/org/bm00/DataAccessor/main.kt

@@ -1,18 +1,7 @@
 package org.bm00.DataAccessor
 
-import jexer.TApplication
-import org.bm00.DataAccessor.windows.WelcomeWindow
 import java.util.*
 
-val backendType = Config().backendType
-
-class Application : TApplication(backendType, 80, 40, 18) {
-    init {
-        WelcomeWindow(this)
-    }
-}
-
-// This creates a Jexer application (and calls the "backend type" which is how its rendered)
 @Throws(Exception::class)
 fun main(args: Array<String>) {
     Config()