Update quiz collector

material/rest-api-ui-ktor-quiz-collector/src/main/kotlin/example/com/Application.kt

@@ -12,4 +12,5 @@ fun Application.module() {
     configureTemplating()
     configureSerialization()
     configureRouting()
+    configureQuizCollector()
 }

material/rest-api-ui-ktor-quiz-collector/src/main/kotlin/example/com/Models.kt

@@ -0,0 +1,21 @@
+package example.com
+
+
+val correctResponses = mapOf(
+    "What is the primary goal of Kotlin Multiplatform?" to "To share code between multiple platforms",
+    "How does Kotlin Multiplatform facilitate code sharing between platforms?" to "By sharing business logic and adapting UI",
+    "Which platforms does Kotlin Multiplatform support?" to "Android, iOS, and web",
+    "What is a common use case for Kotlin Multiplatform?" to "Developing a cross-platform app",
+    "What is a shared code module in Kotlin Multiplatform called?" to "Shared module",
+    "How does Kotlin Multiplatform handle platform-specific implementations?" to "Through expect and actual declarations",
+    "What languages can be interoperable with Kotlin Multiplatform?" to "Java, JavaScript, Swift",
+    "What tooling supports Kotlin Multiplatform development?" to "IntelliJ IDEA, Android Studio",
+    "What is the benefit of using Kotlin Multiplatform for mobile development?" to "Code reuse and sharing",
+    "How does Kotlin Multiplatform differ from Kotlin Native and Kotlin/JS?" to "Kotlin Multiplatform allows sharing code between different platforms using common modules."
+)
+
+data class QuestionResponse(val question: String, val answer: String)
+data class QuizResponse(val responses: List<QuestionResponse>) {
+    val score: Int = responses.count { response -> correctResponses[response.question] == response.answer }
+    val histogram: Map<String, Int> = responses.groupingBy { it.answer }.eachCount()
+}

material/rest-api-ui-ktor-quiz-collector/src/main/kotlin/example/com/QuizCollector.kt

@@ -2,17 +2,21 @@ package example.com
 
 import io.ktor.server.application.*
 import io.ktor.server.html.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
 import io.ktor.server.routing.*
-import kotlinx.html.body
-import kotlinx.html.h1
-import kotlinx.html.title
+import kotlinx.html.*
 
-val replies = mutableListOf<String>()
+val quizResponses = mutableListOf<QuizResponse>()
 
-fun Application.configureCollector() {
+data class CollectResponse(val score: Int)
+
+fun Application.configureQuizCollector() {
     routing {
         post("/collect") {
-
+            val quizResponse = call.receive<QuizResponse>()
+            quizResponses.add(quizResponse)
+            call.respond(CollectResponse(quizResponse.score))
         }
 
         get("/ui") {
@@ -22,7 +26,18 @@ fun Application.configureCollector() {
                 }
                 body {
                     h1 { +"Quiz Collector" }
-
+                    if (quizResponses.isEmpty()) {
+                        +"No responses yet."
+                    } else {
+                        +"Responses:"
+                        ul {
+                            quizResponses.forEach { quizResponse ->
+                                li {
+                                    +"Score: ${quizResponse.score}"
+                                }
+                            }
+                        }
+                    }
                 }
             }
         }