Add kodein di for injections and sample controller

api/pom.xml

@@ -79,9 +79,9 @@
             <version>${ktor_version}</version>
         </dependency>
         <dependency>
-            <groupId>io.ktor</groupId>
-            <artifactId>ktor-client-core-jvm</artifactId>
-            <version>${ktor_version}</version>
+            <groupId>org.kodein.di</groupId>
+            <artifactId>kodein-di-generic-jvm</artifactId>
+            <version>6.5.4</version>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>

api/resources/application.conf

@@ -4,6 +4,6 @@ ktor {
         port = ${?PORT}
     }
     application {
-        modules = [ be.vandewalleh.NotesApiApplicationKt.module ]
+        modules = [ be.vandewalleh.NotesApplicationKt.module ]
     }
 }

api/src/NotesApplication.kt

@@ -1,5 +1,7 @@
 package be.vandewalleh
 
+import be.vandewalleh.controllers.KodeinController
+import be.vandewalleh.controllers.controllerModule
 import com.fasterxml.jackson.databind.SerializationFeature
 import io.ktor.application.Application
 import io.ktor.application.install
@@ -7,6 +9,11 @@ import io.ktor.features.CORS
 import io.ktor.features.ContentNegotiation
 import io.ktor.jackson.jackson
 import io.ktor.locations.Locations
+import io.ktor.routing.routing
+import org.kodein.di.Kodein
+import org.kodein.di.generic.instance
+
+lateinit var kodein: Kodein
 
 @Suppress("unused") // Referenced in application.conf
 fun Application.module() {
@@ -21,4 +28,17 @@ fun Application.module() {
             enable(SerializationFeature.INDENT_OUTPUT)
         }
     }
+
+
+    kodein = Kodein {
+        import(controllerModule)
+    }
+
+    val controllers: Set<KodeinController> by kodein.instance()
+
+    routing {
+        controllers.forEach {
+            it.apply { registerRoutes() }
+        }
+    }
 }

api/src/controllers/Controllers.kt

@@ -0,0 +1,16 @@
+package be.vandewalleh.controllers
+
+import org.kodein.di.Kodein
+import org.kodein.di.generic.bind
+import org.kodein.di.generic.inSet
+import org.kodein.di.generic.setBinding
+import org.kodein.di.generic.singleton
+
+/**
+ * [Kodein] controller module containing the app controllers
+ */
+val controllerModule = Kodein.Module(name = "Controller") {
+    bind() from setBinding<KodeinController>()
+
+    bind<KodeinController>().inSet() with singleton { TestController(this.kodein) }
+}

api/src/controllers/KodeinController.kt

@@ -0,0 +1,27 @@
+package be.vandewalleh.controllers
+
+import io.ktor.application.Application
+import io.ktor.locations.locations
+import io.ktor.routing.Routing
+import org.kodein.di.Kodein
+import org.kodein.di.KodeinAware
+import org.kodein.di.generic.instance
+
+abstract class KodeinController(override val kodein: Kodein) : KodeinAware {
+    /**
+     * Injected dependency with the current [Application].
+     */
+    val application: Application by instance()
+
+    /**
+     * Shortcut to get the url of a [TypedRoute].
+     */
+    val TypedRoute.href get() = application.locations.href(this)
+
+    /**
+     * Method that subtypes must override to register the handled [Routing] routes.
+     */
+    abstract fun Routing.registerRoutes()
+}
+
+interface TypedRoute

api/src/controllers/TestController.kt

@@ -0,0 +1,22 @@
+package be.vandewalleh.controllers
+
+import io.ktor.application.call
+import io.ktor.locations.Location
+import io.ktor.locations.get
+import io.ktor.response.respond
+import io.ktor.routing.Routing
+import org.kodein.di.Kodein
+
+class TestController(kodein: Kodein) : KodeinController(kodein) {
+    override fun Routing.registerRoutes() {
+        get<Routes.Hello>{
+            data class Response(val msg: String)
+            call.respond(Response("Hello"))
+        }
+    }
+
+    object Routes {
+        @Location("/hello")
+        class Hello
+    }
+}