Update 2025-05-26

build.gradle.kts

@@ -1,7 +1,8 @@
 plugins{
     alias(libs.plugins.kotlin.jvm)
+    alias(libs.plugins.kotlinx.serialization)
     alias(libs.plugins.ktor)
-    `maven-publish`
+//    `maven-publish`
 }
 
 group = "center.sciprog.demo"
@@ -19,6 +20,7 @@ repositories {
 }
 
 dependencies {
+    implementation(libs.kotlinx.serialization.json)
     implementation(libs.kotlinx.html)
 //    implementation(libs.kotlin.css)
     implementation(libs.logback.classic)

gradle/libs.versions.toml

@@ -1,8 +1,13 @@
 [versions]
-kotlin-version = "2.0.21"
+kotlin-version = "2.1.20"
 kotlinx-html-version = "0.11.0"
 ktor-version = "3.0.1"
 logback-version = "1.4.14"
+androidx-lifecycle = "2.8.4"
+compose-multiplatform = "1.7.3"
+junit = "4.13.2"
+kotlin = "2.1.20"
+kotlinx-coroutines = "1.10.2"
 
 [libraries]
 ktor-server-core = { module = "io.ktor:ktor-server-core-jvm", version.ref = "ktor-version" }
@@ -23,8 +28,17 @@ ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor-ve
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktor-version" }
 ktor-client-apache = { module = "io.ktor:ktor-client-apache", version.ref = "ktor-version" }
 ktor-client-websockets = { module = "io.ktor:ktor-client-websockets", version.ref = "ktor-version" }
+kotlinx-serialization-json = "org.jetbrains.kotlinx:kotlinx-serialization-json:1.8.1"
 
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-lifecycle-viewmodel = { group = "org.jetbrains.androidx.lifecycle", name = "lifecycle-viewmodel", version.ref = "androidx-lifecycle" }
+androidx-lifecycle-runtime-compose = { group = "org.jetbrains.androidx.lifecycle", name = "lifecycle-runtime-compose", version.ref = "androidx-lifecycle" }
+kotlinx-coroutines-swing = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-swing", version.ref = "kotlinx-coroutines" }
 
 [plugins]
 kotlin-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin-version" }
 ktor = { id = "io.ktor.plugin", version.ref = "ktor-version" }
+kotlinx-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin-version" }
+compose-multiplatform = { id = "org.jetbrains.compose", version.ref = "compose-multiplatform" }
+compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
+kotlinMultiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }

settings.gradle.kts

@@ -0,0 +1,33 @@
+rootProject.name = "idiomaticKotlin"
+enableFeaturePreview("TYPESAFE_PROJECT_ACCESSORS")
+
+pluginManagement {
+    repositories {
+        google {
+            mavenContent {
+                includeGroupAndSubgroups("androidx")
+                includeGroupAndSubgroups("com.android")
+                includeGroupAndSubgroups("com.google")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        google {
+            mavenContent {
+                includeGroupAndSubgroups("androidx")
+                includeGroupAndSubgroups("com.android")
+                includeGroupAndSubgroups("com.google")
+            }
+        }
+        mavenCentral()
+    }
+}
+
+
+
+include(":compose")

src/main/kotlin/serialization/ComplexSerialization.kt

@@ -0,0 +1,27 @@
+package serialization
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.Transient
+import kotlinx.serialization.json.Json
+
+
+@Serializable
+class ComplexSerializationModel(
+    val arg1: String,
+    val arg2: Int
+) {
+    val lazyProp by lazy { arg1.uppercase() }
+
+    @Transient
+    var transientProp: String? = "aaa"
+}
+
+fun main() {
+    val serialized = Json {
+        encodeDefaults = true
+    }.encodeToString(
+        ComplexSerializationModel.serializer(),
+        ComplexSerializationModel("a", 1)
+    )
+    println(serialized)
+}

src/main/kotlin/serialization/ManualSerializer.kt

@@ -0,0 +1,25 @@
+package serialization
+
+object ManualSerializer {
+    fun serialize(marks: MarksList): String =
+        marks.marks.entries.joinToString(", ", prefix = "{ ", postfix = "}\n") { (key, value) ->
+            "\"${key}\": $value"
+        }
+
+    fun deserialize(string: String): MarksList {
+        TODO()
+    }
+}
+
+fun main() {
+    val markList = MarksList(
+        mapOf(
+            "A A" to 1u,
+            "B B" to 2u
+        )
+    )
+
+    val serialized = ManualSerializer.serialize(markList)
+
+    println(serialized)
+}

src/main/kotlin/serialization/StudentGroup.kt

@@ -0,0 +1,14 @@
+package serialization
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Student(val name: String, val group: String)
+
+@Serializable
+class StudentGroup(val id: String, val students: Set<Student>)
+
+typealias Mark = UByte
+
+@Serializable
+data class MarksList(val marks: Map<String, Mark>)

src/main/kotlin/serialization/autoSeriualization.kt

@@ -0,0 +1,25 @@
+package serialization
+
+import kotlinx.serialization.builtins.serializer
+import kotlinx.serialization.json.Json
+
+fun main() {
+    val markList = MarksList(
+        mapOf(
+            "A A" to 1u,
+            "B B" to 2u
+        )
+    )
+
+    val json = Json {
+        prettyPrint = true
+    }
+
+    val string = json.encodeToString(MarksList.serializer(), markList)
+
+    println(string)
+
+    val reconstructed = json.decodeFromString(MarksList.serializer(), string)
+
+    println(reconstructed == markList)
+}

src/main/kotlin/serialization/issLocation.kt

@@ -0,0 +1,51 @@
+package serialization
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.engine.cio.CIO
+import io.ktor.client.request.get
+import io.ktor.client.statement.bodyAsText
+import kotlinx.coroutines.coroutineScope
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.Serializer
+import kotlinx.serialization.json.Json
+
+//http://api.open-notify.org/iss-now.json
+
+/*
+{
+    "timestamp": 1744048325,
+    "message": "success",
+    "iss_position": {
+        "longitude": "5.4810",
+        "latitude": "7.7084"
+    }
+}
+ */
+
+@Serializable
+data class ISSPosition(val longitude: Double, val latitude: Double)
+
+@Serializable
+class OpenNotifyISSLocation(
+    val timestamp: Long,
+    val message: String,
+    @SerialName("iss_position") val issPosition: ISSPosition,
+)
+
+suspend fun main() = coroutineScope {
+    val client = HttpClient(CIO){
+
+    }
+
+    val response = client.get("http://api.open-notify.org/iss-now.json")
+
+    val body = response.bodyAsText()
+
+    val deserialized = Json.decodeFromString<OpenNotifyISSLocation>(body)
+
+    println(deserialized.message)
+
+    println(deserialized.issPosition)
+}