Include Javalin and add a periodic function

app/build.gradle.kts

@@ -34,6 +34,12 @@ dependencies {
 
     // Use the Kotlin JUnit integration.
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
+
+    compile("org.slf4j:slf4j-simple:1.7.30")
+
+    compile("io.javalin:javalin:3.13.8")
+
+    compile("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.0")
 }
 
 application {

app/src/main/kotlin/xyz/etztech/stonks/App.kt

@@ -3,13 +3,30 @@
  */
 package xyz.etztech.stonks
 
-class App {
-    val greeting: String
-        get() {
-            return "Hello World!"
-        }
-}
+import io.javalin.Javalin
+import kotlinx.coroutines.*
 
 fun main() {
-    println(App().greeting)
+    println("Starting Stonks...")
+
+    var apiServerPort = 7000
+    initApiServer(apiServerPort)
+
+    var periodicFetchingInterval = 1000L
+    initPeriodicFetching(periodicFetchingInterval)
 }
+
+fun initApiServer(apiServerPort: Int) {
+    val app = Javalin.create().start(apiServerPort)
+    app.get("/") { ctx -> ctx.result("Hello World") }
+}
+
+fun initPeriodicFetching(interval: Long) =
+        runBlocking {
+            launch {
+                while (true) {
+                    println("Stonks!")
+                    delay(interval)
+                }
+            }
+        }