1 files changed, 174 insertions, 0 deletions
diff --git a/src/jsMain/kotlin/WebOS.kt b/src/jsMain/kotlin/WebOS.kt
index f762d3a..d908363 100644
--- a/src/jsMain/kotlin/WebOS.kt
+++ b/src/jsMain/kotlin/WebOS.kt
@@ -5,7 +5,10 @@ import io.PrimitiveINode
 import kotlinx.browser.document
 import kotlinx.browser.window
 import org.w3c.dom.Element
+import org.w3c.dom.Node
 import org.w3c.dom.asList
+import org.w3c.dom.events.Event
+import org.w3c.dom.events.KeyboardEvent
 
 fun main() {
 	console.log("Hello from Kotlin")
@@ -24,6 +27,130 @@ abstract class Activity(val console: Console) {
 	abstract fun render(columns: Int, rows: Int): List<List<CharacterRun>>
 }
 
+class PrimitiveShell(override val console: Console) : Shell {
+
+	var currentInput = ""
+
+	override fun start() {
+		console.print("${console.currentUser!!.name}@${console.os.hostname} ${console.workingDirectory} > ")
+	}
+
+	override fun handleKeyPress(key: Key) = when (key) {
+		is Key.Printable -> { currentInput += key.char }
+		else -> Unit
+	}
+
+}
+
+sealed class Key {
+	object Alt : Key()
+	object AltGraph : Key()
+	object CapsLock : Key()
+	object Control : Key()
+	object Function : Key()
+	object FunctionLock : Key()
+	object Hyper : Key()
+	object Meta : Key()
+	object NumLock : Key()
+	object Shift : Key()
+	object Super : Key()
+	object Symbol : Key()
+	object SymbolLock : Key()
+	object Enter : Key()
+	object Tab : Key()
+	sealed class Arrow : Key() {
+		object Down : Key()
+		object Left : Key()
+		object Right : Key()
+		object Up : Key()
+	}
+	object End : Key()
+	object Home : Key()
+	object PageUp : Key()
+	object PageDown : Key()
+	object Backspace : Key()
+	object Clear : Key()
+	object Copy : Key()
+	object CrSel : Key()
+	object Cut : Key()
+	object Delete : Key()
+	object EraseEof : Key()
+	object ExSel : Key()
+	object Insert : Key()
+	object Paste : Key()
+	object Redo : Key()
+	object Undo : Key()
+	object Accept : Key()
+	object Again : Key()
+	object Attn : Key()
+	object Cancel : Key()
+	object ContextMenu : Key()
+	object Escape : Key()
+	object Execute : Key()
+	object Find : Key()
+	object Finish : Key()
+	object Help : Key()
+	class Printable(val char: Char) : Key()
+	companion object {
+		fun from(string: String) = when (string) {
+			"Alt" -> Alt
+			"AltGraph" -> AltGraph
+			"CapsLock" -> CapsLock
+			"Control" -> Control
+			"Fn" -> Function
+			"FnLock" -> FunctionLock
+			"Hyper" -> Hyper
+			"Meta" -> Meta
+			"NumLock" -> NumLock
+			"Shift" -> Shift
+			"Super" -> Super
+			"Symbol" -> Symbol
+			"SymbolLock" -> SymbolLock
+			"Enter" -> Enter
+			"Tab" -> Tab
+			"Down" -> Arrow.Down
+			"Left" -> Arrow.Left
+			"Right" -> Arrow.Right
+			"Up" -> Arrow.Up
+			"End" -> End
+			"Home" -> Home
+			"PageUp" -> PageUp
+			"PageDown" -> PageDown
+			"Backspace" -> Backspace
+			"Clear" -> Clear
+			"Copy" -> Copy
+			"CrSel" -> CrSel
+			"Cut" -> Cut
+			"Delete" -> Delete
+			"EraseEof" -> EraseEof
+			"ExSel" -> ExSel
+			"Insert" -> Insert
+			"Paste" -> Paste
+			"Redo" -> Redo
+			"Undo" -> Undo
+			"Accept" -> Accept
+			"Again" -> Again
+			"Attn" -> Attn
+			"Cancel" -> Cancel
+			"ContextMenu" -> ContextMenu
+			"Escape" -> Escape
+			"Execute" -> Execute
+			"Find" -> Find
+			"Finish" -> Finish
+			"Help" -> Help
+			else -> if (string.length == 1) Printable(string.first()) else throw TODO()
+		}
+	}
+}
+
+interface Shell {
+	val console: Console
+	fun start()
+	fun handleKeyPress(key: Key)
+}
+
+typealias KeypressHandler = (Key) -> Unit
+
 class Console(val os: WebOS, val renderElement: Element?) {
 	val isVirtual get() = renderElement == null
 	val activityStack = ArrayDeque<Activity>()
@@ -43,6 +170,22 @@ class Console(val os: WebOS, val renderElement: Element?) {
 			_workingDirectory = value
 		}
 
+	init {
+	    renderElement?.addEventListener("keypress", ::computeKeypressEvent)
+	}
+
+	var keypressHandler: KeypressHandler? = null
+
+	fun computeKeypressEvent(event: Event) {
+		if (!isInFocus()) return
+		if (event !is KeyboardEvent) return
+		keypressHandler?.invoke(Key.from(event.key))
+	}
+
+	private fun isInFocus(): Boolean = renderElement.containsOrIs(document.activeElement)
+
+	private fun Node?.containsOrIs(node: Node?) = this == node || this?.contains(node) ?: false
+
 	fun openActivity(activity: Activity) {
 		activityStack.addLast(activity)
 		invalidateRender()
@@ -66,9 +209,40 @@ class Console(val os: WebOS, val renderElement: Element?) {
 
 	// TODO: Handle resizes of the renderElement
 
+	fun print(text: String): Unit = TODO()
+
+	fun loginAndThen(block: () -> Unit) {
+		print("Username: ")
+		var enteredUsername: Boolean = false
+		var username = ""
+		var password = ""
+		keypressHandler = handler@{
+			if (it is Key.Enter)
+				if (enteredUsername) {
+					//TODO: Login
+					block()
+					return@handler
+				} else {
+					enteredUsername = true
+					print("Password: ")
+				}
+			if (it !is Key.Printable) return@handler
+			if (!enteredUsername) username += it.char else password += it.char
+			print(it.char)
+		}
+	}
+
+	fun start() = loginAndThen {
+		val shell = PrimitiveShell(this) //TODO: choose shell properly
+		keypressHandler = shell::handleKeyPress
+		shell.start()
+	}
+
+
 }
 
 class WebOS {
+	val hostname: String = "host"
 	private val _consoles = mutableListOf<Console>()
 	val consoles get() = _consoles.toList()
 	val files: FileService<PrimitiveINode> = PrimitiveFileService()