fixed AppImage, changed to single app

6 files changed, 899 insertions, 0 deletions

diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/App.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/App.kt
new file mode 100644
index 0000000..5b5ddac
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/App.kt
@@ -0,0 +1,34 @@
+/*
+ * This Kotlin source file was generated by the Gradle 'init' task.
+ */
+package xyz.brysonsteck.ServerCraft
+
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.scene.image.Image
+import javafx.stage.Stage;
+import java.awt.Desktop;
+
+class App : Application() {
+
+  override fun start(stage: Stage) { 
+    var scene = Scene(loadFXML("primary"), 963.0, 713.0)
+    stage.icons.add(Image(this.javaClass.getResourceAsStream("app.png")))
+    stage.setResizable(false)
+    stage.title = "ServerCraft"
+    stage.scene = scene
+    stage.show()
+  }
+
+  public fun loadFXML(fxml: String) : Parent {
+    val fxmlLoader = FXMLLoader(this.javaClass.getResource(fxml + ".fxml"))
+    return fxmlLoader.load()
+  }
+
+  public fun run() {
+    launch()
+  }
+
+}
diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/Main.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/Main.kt
new file mode 100644
index 0000000..fbb61e4
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/Main.kt
@@ -0,0 +1,5 @@
+package xyz.brysonsteck.ServerCraft
+
+fun main() {
+  App().run()
+}
\ No newline at end of file
diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/InfoController.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/InfoController.kt
new file mode 100644
index 0000000..dcf77ba
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/InfoController.kt
@@ -0,0 +1,74 @@
+package xyz.brysonsteck.ServerCraft.controllers
+
+import javafx.fxml.FXML
+import javafx.application.Platform
+import javafx.scene.Node
+import javafx.scene.control.Hyperlink
+import javafx.stage.Stage
+import javafx.event.ActionEvent
+import java.awt.Desktop
+import java.net.URI
+
+class InfoController {
+  private val emails = mapOf(
+    "bryson" to "me@brysonsteck.xyz"
+  )
+  private val websites = mapOf(
+    "bryson" to "https://brysonsteck.xyz"
+  )
+  private val source = "https://codeberg.org/brysonsteck/ServerCraft"
+  private val license = "https://www.gnu.org/licenses/gpl-3.0.html"
+
+  @FXML
+  private fun openHyperlink(e: ActionEvent) {
+    val link = e.source as Hyperlink
+    link.isVisited = false
+    val split = link.id.split('_').toMutableList()
+    split.add("")
+    val os = System.getProperty("os.name").lowercase()
+
+    val desktop = Desktop.getDesktop()
+    try {
+      when {
+        split[1].equals("email") -> {
+          if (!os.contains("linux")) {
+            desktop.browse(URI("mailto:" + emails[split[0]]))
+          } else {
+            Runtime.getRuntime().exec("xdg-open mailto:" + emails[split[0]])
+          }
+        }
+        split[1].equals("website") -> {
+          if (!os.contains("linux")) {
+            desktop.browse(URI(websites[split[0]]))
+          } else {
+            Runtime.getRuntime().exec("xdg-open " + websites[split[0]])
+          }
+        }
+        split[0].equals("source") -> {
+          if (!os.contains("linux")) {
+            desktop.browse(URI(source))
+          } else {
+            Runtime.getRuntime().exec("xdg-open " + source)
+          }
+        }
+        split[0].equals("license") -> {
+          println("license")
+          if (!os.contains("linux")) {
+            desktop.browse(URI(license))
+          } else {
+            Runtime.getRuntime().exec("xdg-open " + license)
+          }
+        }
+      }
+    } catch (e: Exception) {
+      println(e)
+    }
+  }
+
+  @FXML
+  private fun closeInfo(e: ActionEvent) {
+    val source = e.getSource() as Node 
+    val stage = source.getScene().getWindow() as Stage
+    stage.close();
+  }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/PrimaryController.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/PrimaryController.kt
new file mode 100644
index 0000000..99d1009
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/controllers/PrimaryController.kt
@@ -0,0 +1,632 @@
+package xyz.brysonsteck.ServerCraft.controllers
+
+import kotlinx.coroutines.*
+import kotlinx.coroutines.javafx.JavaFx
+import org.rauschig.jarchivelib.*
+
+import java.io.File
+import java.io.IOException
+import java.io.BufferedReader
+import java.io.InputStreamReader
+import java.awt.Checkbox
+import java.awt.Desktop
+import java.util.Properties
+import java.net.URL
+import java.net.URI
+
+import javafx.beans.value.ChangeListener
+import javafx.beans.value.ObservableValue
+import javafx.concurrent.Task
+import javafx.beans.property.BooleanProperty
+import javafx.collections.FXCollections
+import javafx.fxml.FXML
+import javafx.fxml.FXMLLoader
+import javafx.geometry.Insets
+import javafx.scene.control.Button
+import javafx.scene.control.ChoiceBox
+import javafx.scene.control.Label
+import javafx.scene.control.TextField
+import javafx.scene.control.Spinner
+import javafx.scene.control.TitledPane
+import javafx.scene.control.ButtonBar
+import javafx.scene.control.CheckBox
+import javafx.scene.control.ProgressBar
+import javafx.scene.control.Hyperlink
+import javafx.scene.layout.Border
+import javafx.scene.layout.BorderStroke
+import javafx.scene.layout.GridPane
+import javafx.scene.layout.Pane
+import javafx.scene.layout.HBox
+import javafx.scene.layout.VBox
+import javafx.scene.text.TextAlignment
+import javafx.scene.text.Text
+import javafx.scene.Scene
+import javafx.scene.input.MouseEvent
+import javafx.scene.image.Image
+import javafx.scene.image.ImageView
+import javafx.stage.FileChooser
+import javafx.stage.FileChooser.ExtensionFilter
+import javafx.stage.DirectoryChooser
+import javafx.stage.Modality
+import javafx.stage.Stage
+import javafx.event.EventHandler
+import org.rauschig.jarchivelib.*
+
+import xyz.brysonsteck.ServerCraft.server.Server
+import xyz.brysonsteck.ServerCraft.server.Download
+import xyz.brysonsteck.ServerCraft.App
+
+class PrimaryController {
+  @FXML
+  lateinit private var currentDirectoryLabel: Label
+  @FXML
+  lateinit private var worldNameField: TextField
+  @FXML
+  lateinit private var seedField: TextField
+  @FXML
+  lateinit private var portSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var difficultyBox: ChoiceBox<String>
+  @FXML
+  lateinit private var gamemodeBox: ChoiceBox<String>
+  @FXML
+  lateinit private var worldTypeBox: ChoiceBox<String>
+  @FXML
+  lateinit private var worldSettingsPane: HBox
+  @FXML
+  lateinit private var parentPane: Pane
+  @FXML
+  lateinit private var directoryPane: Pane
+  @FXML
+  lateinit private var buttonBar: ButtonBar
+  @FXML
+  lateinit private var flightCheckbox: CheckBox
+  @FXML
+  lateinit private var netherCheckbox: CheckBox
+  @FXML
+  lateinit private var structuresCheckbox: CheckBox
+  @FXML
+  lateinit private var pvpCheckbox: CheckBox
+  @FXML
+  lateinit private var whitelistCheckbox: CheckBox
+  @FXML
+  lateinit private var cmdBlocksCheckbox: CheckBox
+  @FXML
+  lateinit private var playerCountCheckbox: CheckBox
+  @FXML
+  lateinit private var maxPlayersSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var maxSizeSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var memorySpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var spawnSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var simulationSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var renderSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var maxTickSpinner: Spinner<kotlin.Int>
+  @FXML
+  lateinit private var statusBar: Label
+  @FXML
+  lateinit private var progressBar: ProgressBar
+  @FXML
+  lateinit private var startButton: Button
+  @FXML
+  lateinit private var buildButton: Button
+  @FXML
+  lateinit private var defaultsButton: Button
+
+  lateinit private var server: Server
+  private var building = false
+  private var directory = ""
+  private var asyncResult = false
+  private var started = false
+
+  @FXML
+  public fun initialize() {
+    difficultyBox.items = FXCollections.observableArrayList(
+      "Peaceful",
+      "Easy",
+      "Normal",
+      "Hard",
+      "Hardcore"
+    )
+    difficultyBox.value = "Normal"
+    difficultyBox.selectionModel.selectedIndexProperty().addListener { _, _, new -> 
+      onChoiceBoxChange("difficulty", difficultyBox.items[new as Int])
+    }
+    gamemodeBox.items = FXCollections.observableArrayList(
+      "Survival",
+      "Creative",
+      "Adventure",
+      "Spectator"
+    )
+    gamemodeBox.value = "Survival"
+    gamemodeBox.selectionModel.selectedIndexProperty().addListener { _, _, new -> 
+      onChoiceBoxChange("gamemode", gamemodeBox.items[new as Int])
+    }
+    worldTypeBox.items = FXCollections.observableArrayList(
+      "Normal",
+      "Superflat",
+      "Large Biomes",
+      "Amplified"
+    )
+    worldTypeBox.value = "Normal"
+    worldTypeBox.selectionModel.selectedIndexProperty().addListener { _, _, new -> 
+      onChoiceBoxChange("world-type", worldTypeBox.items[new as Int])
+    }
+  }
+  
+  @FXML
+  private fun onDirectoryButtonClick() {
+    val dirChooser = DirectoryChooser()
+    dirChooser.title = "Open a server directory"
+    dirChooser.initialDirectory = File(System.getProperty("user.home"))
+    val result = dirChooser.showDialog(null)
+    if (result != null) {
+      currentDirectoryLabel.text = result.absolutePath
+      server = Server()
+      val res = loadServerDir(result.absolutePath)
+      if (res) {
+        parentPane.isDisable = false
+        worldSettingsPane.isDisable = false
+        buildButton.isDisable = false
+        defaultsButton.isDisable = false
+      } else {
+        currentDirectoryLabel.text = "<NONE>"
+        parentPane.isDisable = true
+        worldSettingsPane.isDisable = true
+        startButton.isDisable = true
+        buildButton.isDisable = true
+        defaultsButton.isDisable = true
+      }
+    }
+  }
+
+  @FXML
+  private fun onWorldNameChange() {
+
+  }
+
+  @FXML
+  private fun onSeedChange() {
+
+  }
+
+  @FXML
+  private fun onPortChange() {
+
+  }
+
+  @FXML
+  private fun onCheckboxClick() {
+
+  }
+
+  @FXML
+  private fun onSpinnerChange() {
+
+  }
+
+  private fun onChoiceBoxChange(box: String, selection: String) {
+
+  }
+
+  @FXML
+  private fun onInfo() {
+    val stage = Stage()
+    val scene = Scene(FXMLLoader(App().javaClass.getResource("info.fxml")).load(), 398.0, 358.0)
+    stage.icons.add(Image(App().javaClass.getResourceAsStream("app.png")))
+    stage.setResizable(false)
+    stage.initModality(Modality.APPLICATION_MODAL);
+    stage.title = "About ServerCraft"
+    stage.scene = scene
+    stage.show()
+  }
+
+  @FXML
+  private fun onBuild() {
+    if (building) {
+      building = false
+      return;
+    }
+    building = true
+    worldSettingsPane.isDisable = true
+    directoryPane.isDisable = true
+    parentPane.isDisable = true
+    startButton.isDisable = true
+    defaultsButton.isDisable = true
+    buildButton.text = "Cancel Build"
+
+    @Suppress("OPT_IN_USAGE")
+    GlobalScope.launch(Dispatchers.Default) {
+      progressBar.isVisible = true
+      var javaFile = ""
+      var archiver = ArchiverFactory.createArchiver(ArchiveFormat.TAR, CompressionType.GZIP)
+      val os = System.getProperty("os.name").lowercase()
+      when {
+        os.contains("win") -> {
+          javaFile = "openjdk-20.0.1_windows-x64_bin.zip"
+          archiver = ArchiverFactory.createArchiver(ArchiveFormat.ZIP)
+        }
+        os.contains("linux") -> {
+          javaFile = "openjdk-20.0.1_linux-x64_bin.tar.gz"
+        }
+        os.contains("mac") -> {
+          javaFile = "openjdk-20.0.1_macos-x64_bin.tar.gz"
+        }
+      }
+
+      // download files
+      val downloads = mapOf(
+        "Java 20" to "https://download.java.net/java/GA/jdk20.0.1/b4887098932d415489976708ad6d1a4b/9/GPL/${javaFile}",
+        "BuildTools" to "https://hub.spigotmc.org/jenkins/job/BuildTools/lastSuccessfulBuild/artifact/target/BuildTools.jar",
+      )
+      val destinations = mapOf (
+        "Java 20" to directory + "ServerCraft" + File.separator + "Java" + File.separator,
+        "BuildTools" to directory + "ServerCraft" + File.separator + "Spigot" + File.separator
+      )
+      val spigotBuilt = File(destinations["BuildTools"]).exists()
+      val javaExtracted = File(destinations["Java 20"] + "jdk-20.0.1").exists() 
+      destinations.forEach {
+        File(it.value).mkdir()
+      }
+      downloads.forEach {
+        if (it.key == "Java 20" && javaExtracted) {
+          return@forEach
+        }
+        withContext(Dispatchers.JavaFx){
+          statusBar.text = "Downloading ${it.key}..."
+          progressBar.progress = ProgressBar.INDETERMINATE_PROGRESS
+        }
+        val download = Download(URL(it.value), destinations[it.key]!!)
+        download.start()
+        while (download.status == Download.Status.DOWNLOADING) {
+          var prog = (download.downloaded.toDouble() / download.contentLength.toDouble())
+          // for whatever reason I need to print something to the screen in order for it to update the progress bar
+          print("")
+          if (prog >= 0.01) {
+            withContext(Dispatchers.JavaFx) {progressBar.progress = prog}
+          }
+          if (!building) download.status = Download.Status.CANCELLED
+          Thread.sleep(300)
+        }
+      }
+
+      // extract java archive
+      if (building && !javaExtracted) {
+        withContext(Dispatchers.JavaFx) {
+          progressBar.progress = ProgressBar.INDETERMINATE_PROGRESS
+          statusBar.text = "Extracting Java archive..."
+        }
+        var stream = archiver.stream(File(directory + "ServerCraft" + File.separator + "Java" + File.separator + javaFile))
+        val dest = File(directory + "ServerCraft" + File.separator + "Java")
+        var entries = 0.0
+        while(stream.getNextEntry() != null && building) {
+          entries++
+        }
+        stream = archiver.stream(File(directory + "ServerCraft" + File.separator + "Java" + File.separator + javaFile))
+        var entry = stream.getNextEntry()
+        var currentEntry = 0.0
+        do {
+          withContext(Dispatchers.JavaFx) {progressBar.progress = currentEntry/entries}
+          entry.extract(dest)
+          entry = stream.getNextEntry()
+          currentEntry++
+        } while (entry != null && building)
+      }
+
+      if (building) {
+        withContext(Dispatchers.JavaFx) {
+          progressBar.progress = ProgressBar.INDETERMINATE_PROGRESS
+          statusBar.text = "Building Minecraft Server..."
+        }
+        val builder = ProcessBuilder("java", "-jar", "BuildTools.jar", "--rev", "latest", "-o", ".." + File.separator + ".." + File.separator)
+        builder.directory(File(directory + "ServerCraft" + File.separator + "Spigot"))
+        val proc = builder.start()
+        val reader = InputStreamReader(proc.inputStream)
+        val br = BufferedReader(reader)
+        try {
+          var line = br.readLine()
+          var currentline = 0.0
+          while (line != null) {
+            if (!building) {
+              proc.destroy()
+            }
+            println(line)
+            line = br.readLine()
+            currentline++
+            if (currentline > 15) {
+              withContext(Dispatchers.JavaFx) {progressBar.progress = if (spigotBuilt) {currentline/1100.0} else {currentline/14122.0} }
+            }
+          }
+        } catch (e: IOException) {
+          println("Stream closed")
+        }
+      }
+
+      progressBar.isVisible = false
+      withContext(Dispatchers.JavaFx){
+        worldSettingsPane.isDisable = false
+        directoryPane.isDisable = false
+        parentPane.isDisable = false
+        defaultsButton.isDisable = false
+        buildButton.text = "Build Server"
+        statusBar.text = if (building) {
+          findServerJar()
+          buildButton.text = "Rebuild Server"
+          startButton.isDisable = false
+          "Ready."
+        } else {
+          "Server build cancelled."
+        }
+        building = false;
+      }
+    }
+  }
+
+  @FXML
+  private fun onStart() {
+    if (started) {
+      createDialog("warning", "You should only kill the server if\nabsolutely necessary. Data loss may occur.\nContinue anyway?", "Yes", "No", false)
+      return;
+    }
+    if (!File(directory + "eula.txt").exists()) {
+      val res = eulaDialog()
+      if (res) {
+        File(directory + "eula.txt").writeText("eula=true")
+      } else {
+        return;
+      }
+    }
+    started = true
+    statusBar.text = "The Minecraft Server is now running. Shutdown the server to unlock the settings."
+    worldSettingsPane.isDisable = true
+    directoryPane.isDisable = true
+    parentPane.isDisable = true
+    buildButton.isDisable = true
+    defaultsButton.isDisable = true
+    startButton.text = "Kill Server"
+    @Suppress("OPT_IN_USAGE")
+    GlobalScope.launch(Dispatchers.Default) {
+      val builder = ProcessBuilder("java", "-jar", "${server.jar}")
+      builder.directory(File(directory))
+      val proc = builder.start()
+      val reader = InputStreamReader(proc.inputStream)
+      val br = BufferedReader(reader)
+      try {
+        var line = br.readLine()
+        while (line != null) {
+          if (asyncResult) {
+            withContext(Dispatchers.JavaFx) {
+              statusBar.text = "Killing Minecraft server..."
+              startButton.isDisable = true
+            }
+            proc.destroy()
+          }
+          println(line);
+          line = br.readLine()
+        }
+      } catch (e: IOException) {
+        println("Stream closed")
+      }
+      withContext(Dispatchers.JavaFx) {
+        statusBar.text = if (asyncResult) {
+          asyncResult = false
+          "Server killed."
+        } else {
+          "Server stopped."
+        }
+        worldSettingsPane.isDisable = false
+        directoryPane.isDisable = false
+        parentPane.isDisable = false
+        buildButton.isDisable = false
+        defaultsButton.isDisable = false
+        startButton.isDisable = false
+        startButton.text = "Start Server"
+        started = false
+      }
+    } 
+  }
+
+  private fun eulaDialog(): Boolean {
+    var result = false
+    val resources = App().javaClass.getResource("icons/warning.png")
+    val dialog = Stage()
+    dialog.icons.add(Image(App().javaClass.getResourceAsStream("app.png")))
+    dialog.setResizable(false)
+    dialog.initModality(Modality.APPLICATION_MODAL);
+    dialog.title = directory
+    val scenePane = Pane()
+    val dialogScene = Scene(scenePane, 400.0, 150.0);
+    val imagePane = Pane()
+    val icon = Image("$resources")
+    imagePane.layoutX = 14.0
+    imagePane.layoutY = 14.0
+    imagePane.scaleX = 0.7
+    imagePane.scaleY = 0.7
+    imagePane.children.add(ImageView(icon))
+    val label = Label("Do you agree to the terms of the Minecraft End User License Agreement?")
+    label.isWrapText = true
+    label.layoutX = 115.0
+    label.layoutY = 40.0
+    val buttonBar = ButtonBar()
+    buttonBar.buttonOrder = "L+R"
+    buttonBar.padding = Insets(10.0, 10.0, 10.0, 10.0)
+    buttonBar.layoutX = 0.0
+    buttonBar.layoutY = 107.0
+    buttonBar.prefWidth = 400.0
+    val noButton = Button("I Disagree")
+    noButton.onMouseClicked = EventHandler<MouseEvent>() {
+      result = false
+      dialog.hide()
+    }
+    noButton.isDefaultButton = true
+    val yesButton = Button("I Agree")
+    yesButton.onMouseClicked = EventHandler<MouseEvent>() {
+      result = true
+      dialog.hide()
+    }
+    val eula = Button("View EULA")
+    eula.onMouseClicked = EventHandler<MouseEvent>() {
+      val desktop = Desktop.getDesktop()
+      if (desktop.isSupported(Desktop.Action.BROWSE)) {
+        // most likely running on Windows or macOS
+        try {
+          desktop.browse(URI("https://account.mojang.com/documents/minecraft_eula"))
+        } catch (e: Exception) {
+          println(e)
+        }
+      } else {
+        // assume running on linux
+        try {
+          Runtime.getRuntime().exec("xdg-open https://account.mojang.com/documents/minecraft_eula");
+        } catch (e: Exception) {
+          println(e)
+        }
+      }
+    }
+    ButtonBar.setButtonData(eula, ButtonBar.ButtonData.LEFT)
+    ButtonBar.setButtonData(noButton, ButtonBar.ButtonData.RIGHT)
+    ButtonBar.setButtonData(yesButton, ButtonBar.ButtonData.RIGHT)
+    buttonBar.buttons.add(eula)
+    buttonBar.buttons.add(noButton)
+    buttonBar.buttons.add(yesButton)
+    scenePane.children.addAll(imagePane, label, buttonBar)
+    dialog.setScene(dialogScene);
+    dialog.showAndWait();
+    return result
+  }
+
+  private fun createDialog(type: String, msg: String, yes: String, no: String, hold: Boolean): Boolean {
+    var result = false
+    val resources = App().javaClass.getResource("icons/$type.png")
+    val dialog = Stage()
+    dialog.icons.add(Image(App().javaClass.getResourceAsStream("app.png")))
+    dialog.setResizable(false)
+    dialog.initModality(Modality.APPLICATION_MODAL);
+    dialog.title = directory
+    val scenePane = Pane()
+    val dialogScene = Scene(scenePane, 400.0, 150.0);
+    val imagePane = Pane()
+    val icon = Image("$resources")
+    imagePane.layoutX = 14.0
+    imagePane.layoutY = 14.0
+    imagePane.scaleX = 0.7
+    imagePane.scaleY = 0.7
+    imagePane.children.add(ImageView(icon))
+    val label = Label(msg)
+    label.isWrapText = true
+    label.layoutX = 115.0
+    label.layoutY = if (type == "warning") {10.0} else {40.0}
+    val buttonBar = ButtonBar()
+    buttonBar.padding = Insets(10.0, 10.0, 10.0, 10.0)
+    buttonBar.layoutX = 0.0
+    buttonBar.layoutY = 107.0
+    buttonBar.prefWidth = 400.0
+    val noButton = Button(no)
+    noButton.onMouseClicked = EventHandler<MouseEvent>() {
+      if (hold) {
+        result = false
+      } else {
+        asyncResult = false
+      }
+      dialog.hide()
+    }
+    val yesButton = Button(yes)
+    yesButton.onMouseClicked = EventHandler<MouseEvent>() {
+      if (hold) {
+        result = true
+      } else {
+        asyncResult = true
+      }
+      dialog.hide()
+    }
+    yesButton.isDefaultButton = true
+    buttonBar.buttons.add(noButton)
+    buttonBar.buttons.add(yesButton)
+    scenePane.children.addAll(imagePane, label, buttonBar)
+    dialog.setScene(dialogScene);
+    if (hold) {
+      dialog.showAndWait();
+    } else {
+      dialog.show();
+    }
+    return result
+  }
+
+  private fun loadServerDir(dir: String): Boolean {
+    directory = dir
+    if (!File(directory).isDirectory) {
+      return false;
+    }
+
+    if (directory[directory.length-1] != File.separatorChar)
+      directory += File.separatorChar
+
+    val hasDummy = File(directory + "ServerCraft").isDirectory
+    val hasProperties = File(directory + File.separator + "server.properties").isFile
+    val hasServer = findServerJar()
+
+    if (hasDummy && hasServer) {
+      // server complete, just read jproperties
+      statusBar.text = "Server found!"
+      startButton.isDisable = false
+      buildButton.text = "Rebuild Server"
+    } else if (hasDummy && !hasServer && hasProperties) {
+      // just needs to be built
+      startButton.isDisable = true
+      statusBar.text = "Server needs to be built before starting."
+    } else if (!hasDummy && hasServer) {
+      // server created externally
+      val result = createDialog("warning", "This server directory was not created by \nServerCraft. Errors may occur; copying\nthe world directories to a new folder may be\nsafer. Proceed anyway?", "Yes", "No", true)
+      statusBar.text = "Ready."
+      if (result) {
+        startButton.isDisable = false
+      }
+      return result
+    } else {
+      // assume clean directory
+      val result = createDialog("info", "There is no server in this directory.\nCreate one?", "Yes", "No", true)
+      if (result) {
+        File(directory + "ServerCraft").mkdir()
+        startButton.isDisable = true
+        buildButton.text = "Build Server"
+      }
+      statusBar.text = "Ready."
+      return result
+    }
+
+    return true;
+  }
+
+  private fun findServerJar(): Boolean {
+    // search for spigot jar
+    // major version
+    for (i in 25 downTo 8) {
+      // patch number
+      for (j in 15 downTo 0) {
+        var spigotFile: String = ""
+        if (j == 0)
+          spigotFile += "spigot-1.$i.jar"
+        else
+          spigotFile += "spigot-1.$i.$j.jar";
+
+        if (File(directory + spigotFile).isFile) {
+          server.jar = directory + spigotFile
+          return true
+        }
+      }
+    }
+
+    // try vanilla server if no spigot server
+    if (File(directory + "server.jar").isFile) {
+      server.jar = directory + "server.jar"
+      return true
+    }
+
+    return false
+  }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Download.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Download.kt
new file mode 100644
index 0000000..757c32c
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Download.kt
@@ -0,0 +1,119 @@
+package xyz.brysonsteck.ServerCraft.server
+
+import java.io.*;
+import java.net.*;
+import java.util.*;
+
+class Download: Runnable {
+  public enum class Status {
+    DOWNLOADING, PAUSED, COMPLETE, CANCELLED, ERROR
+  }
+  public var size: Int
+  public var downloaded: Int
+  public var contentLength: Int
+  public var status: Status
+
+  private final val MAX_BUFFER_SIZE: Number = 1024
+
+  private var url: URL
+  private var dir: String
+
+  constructor (url: URL, dir: String) {
+    this.url = url
+    this.dir = dir
+    size = -1
+    downloaded = 0
+    status = Status.DOWNLOADING
+    contentLength = 1
+  }
+
+  public fun start() {
+    val thread = Thread(this)
+    thread.start()
+  }
+
+  private fun getFilename(url: URL): String {
+    val filename = url.getFile()
+    return filename.substring(filename.lastIndexOf('/') + 1)
+  }
+
+  override fun run() { 
+    var stream: InputStream? = null
+    var file: RandomAccessFile? = null
+
+    try {
+      // Open connection to URL.
+      var connection = url.openConnection() as HttpURLConnection;
+
+      // Specify what portion of file to download.
+      connection.setRequestProperty("Range", "bytes=" + downloaded + "-");
+
+      // Connect to server.
+      connection.connect();
+
+      // Make sure response code is in the 200 range.
+      if (connection.responseCode / 100 != 2) {
+        status = Status.ERROR
+      }
+
+      // Check for valid content length.
+      contentLength = connection.getContentLength();
+      if (contentLength < 1) {
+        status = Status.ERROR
+      }
+
+      /* Set the size for this download if it
+        hasn't been already set. */
+      if (size == -1) {
+        size = contentLength;
+      }
+
+      // Open file and seek to the end of it.
+      file = RandomAccessFile(dir + getFilename(url), "rw");
+      file.seek(downloaded.toLong());
+
+      stream = connection.getInputStream();
+      while (status == Status.DOWNLOADING) {
+        /* Size buffer according to how much of the
+          file is left to download. */
+        val buffer: ByteArray;
+        if (size - downloaded > MAX_BUFFER_SIZE as Int) {
+          buffer = ByteArray(MAX_BUFFER_SIZE)
+        } else {
+          buffer = ByteArray(size - downloaded);
+        }
+
+        // Read from server into buffer.
+        val read = stream.read(buffer);
+        if (read == -1)
+          break;
+
+        // Write buffer to file.
+        file.write(buffer, 0, read);
+        downloaded += read;
+      }
+
+      /* Change status to complete if this point was
+          reached because downloading has finished. */
+      if (status == Status.DOWNLOADING) {
+          status = Status.COMPLETE;
+      }
+    } catch (e: Exception) {
+      status = Status.ERROR
+    } finally {
+        // Close file.
+        if (file != null) {
+            try {
+                file.close();
+            } catch (e: Exception) {}
+        }
+
+        // Close connection to server.
+        if (stream != null) {
+            try {
+                stream.close();
+            } catch (e: Exception) {}
+        }
+    }
+  }
+}
diff --git a/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Server.kt b/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Server.kt
new file mode 100644
index 0000000..746bc55
--- /dev/null
+++ b/src/main/kotlin/xyz/brysonsteck/ServerCraft/server/Server.kt
@@ -0,0 +1,35 @@
+package xyz.brysonsteck.ServerCraft.server
+
+import java.io.File
+import java.util.Properties
+
+public class Server {
+  public var jar = ""
+
+  private val props = Properties()
+
+  constructor() {
+    props.setProperty("allow-flight", false.toString())
+    props.setProperty("allow-nether", true.toString())
+    props.setProperty("generate-structures", true.toString())
+    props.setProperty("hardcore", false.toString())
+    props.setProperty("pvp", true.toString())
+    props.setProperty("white-list", false.toString())
+    props.setProperty("enable-command-block", false.toString())
+    props.setProperty("hide-online-players", false.toString())
+    props.setProperty("max-players", 20.toString())
+    props.setProperty("max-world-size", 29999984.toString())
+    props.setProperty("server-port", 25565.toString())
+    props.setProperty("view-distance", 10.toString())
+    props.setProperty("jvm-ram", 1024.toString())
+    props.setProperty("spawn-protection", 16.toString())
+    props.setProperty("simulation-distance", 10.toString())
+    props.setProperty("max-tick-time", 60000.toString())
+    props.setProperty("difficulty", "normal")
+    props.setProperty("gamemode", "survival")
+    props.setProperty("level-name", "world")
+    props.setProperty("level-seed", "")
+    props.setProperty("level-type", "minecraft:normal")
+    props.setProperty("motd", "A server for a dummy")
+  }
+}
\ No newline at end of file