Port to 1.20 with a paper plugin

build.gradle.kts

@@ -1,29 +1,30 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-    kotlin("jvm") version "1.7.10"
-    kotlin("plugin.serialization") version "1.7.0"
+    kotlin("jvm") version "1.8.22"
+    kotlin("plugin.serialization") version "1.8.22"
     id("maven-publish")
-    id("com.github.johnrengelman.shadow") version "7.1.2"
-    id("io.papermc.paperweight.userdev") version "1.3.8"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
+    id("io.papermc.paperweight.userdev") version "1.5.5"
 }
 
 group = "nl.kallestruik"
-version = "1.5.0"
+version = "1.5.1"
 
 repositories {
     mavenCentral()
 }
 
 dependencies {
-    paperDevBundle("1.19-R0.1-SNAPSHOT")
+    paperweight.paperDevBundle("1.20-R0.1-SNAPSHOT")
 
     implementation(kotlin("reflect"))
-    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.3")
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.3")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.1")
     implementation("org.jetbrains.kotlin:kotlin-scripting-common")
     implementation("org.jetbrains.kotlin:kotlin-scripting-jvm")
     implementation("org.jetbrains.kotlin:kotlin-scripting-jvm-host")
+    implementation("net.kyori:adventure-text-serializer-plain:4.14.0")
 
     testImplementation(kotlin("test-junit5"))
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.8.2")
@@ -87,4 +88,4 @@ kotlin {
             languageSettings.optIn("kotlinx.serialization.ExperimentalSerializationApi")
         }
     }
-}
+}

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

src/main/kotlin/nl/kallestruik/dlib/DLib.kt

@@ -1,10 +1,8 @@
 package nl.kallestruik.dlib
 
-import net.kyori.adventure.text.Component
-import nl.kallestruik.dlib.gui.chestGUI
 import org.bukkit.plugin.java.JavaPlugin
 
 /**
  * This class is only here to make sure that paper loads the plugin.
  */
-class DLib: JavaPlugin()
+class DLib: JavaPlugin() 

src/main/kotlin/nl/kallestruik/dlib/gui/TextInputDialog.kt

@@ -2,6 +2,7 @@ package nl.kallestruik.dlib.gui
 
 import kotlinx.coroutines.runBlocking
 import net.kyori.adventure.text.Component
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer
 import org.bukkit.Material
 import org.bukkit.entity.Player
 import org.bukkit.event.EventHandler
@@ -116,7 +117,9 @@ class TextInputDialog: Listener {
         }
 
         val item = event.currentItem
-        val name = item?.itemMeta?.displayName ?: ""
+        val nameComponent = item?.itemMeta?.displayName() ?: Component.empty()
+
+        val name = PlainTextComponentSerializer.plainText().serialize(nameComponent)
 
         if (name == "") {
             event.isCancelled = true

src/main/resources/paper-plugin.yml

@@ -1,4 +1,4 @@
-name: "DLib"
-main: nl.kallestruik.dlib.DLib
+name: DLib
 version: ${version}
-api-version: 1.16
+main: nl.kallestruik.dlib.DLib
+api-version: '1.20'