Fix build helpers publishing (#1416)

* Fix compatibility with Intellij 2021.3

Resolves #1373

* Use Java reflection

* Set Java source & target compatibility for build helpers

Otherwise, Gradle might set Gradle metadata attributes in such way,
that transitive dependencies of published modules are not resolved

* Configure shadow jar manually

Applying plugin configures additional publication,
so that both .jar and -shadow.jar are published,
and additional configurations are added to Gradle metadata.

To avoid unexpected metadata resolution results,
ShadowJar task is now configured manually

* Fix closeStagingRepo JSON request

* Update publishing build-helpers in compose

build-helpers/build.gradle.kts

@@ -14,6 +14,8 @@ subprojects {
     plugins.withType(JavaBasePlugin::class.java) {
         afterEvaluate {
             configureIfExists<JavaPluginExtension> {
+                sourceCompatibility = JavaVersion.VERSION_1_8
+                targetCompatibility = JavaVersion.VERSION_1_8
                 if (sourceSets.names.contains(SourceSet.MAIN_SOURCE_SET_NAME)) {
                     withJavadocJar()
                     withSourcesJar()

build-helpers/publishing/build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
     `maven-publish`
     `java-gradle-plugin`
     id("org.jetbrains.kotlin.jvm")
-    id("com.github.johnrengelman.shadow")
+    id("com.github.johnrengelman.shadow") apply false
 }
 
 repositories {
@@ -34,7 +34,7 @@ dependencies {
     embedded("de.undercouch:gradle-download-task:4.1.2")
 }
 
-val shadow = tasks.named<ShadowJar>("shadowJar") {
+val shadowJar by tasks.registering(ShadowJar::class) {
     val fromPackage = "de.undercouch"
     val toPackage = "org.jetbrains.compose.internal.publishing.$fromPackage"
     relocate(fromPackage, toPackage)
@@ -44,7 +44,7 @@ val shadow = tasks.named<ShadowJar>("shadowJar") {
 }
 
 val jar = tasks.named<Jar>("jar") {
-    dependsOn(shadow)
-    from(zipTree(shadow.get().archiveFile))
+    dependsOn(shadowJar)
+    from(zipTree(shadowJar.get().archiveFile))
     this.duplicatesStrategy = DuplicatesStrategy.INCLUDE
 }

build-helpers/publishing/src/main/kotlin/org/jetbrains/compose/internal/publishing/utils/SonatypeRestApiClient.kt

@@ -80,7 +80,8 @@ class SonatypeRestApiClient(
         logger.info("Closing repository '${repo.id}'")
         buildRequest("service/local/staging/bulk/close") {
             val request = "{\"data\":{\"stagedRepositoryIds\":[\"${repo.id}\"]}}"
-            post(Xml.serialize(request).toRequestBody(Json.mediaType))
+            post(request.toRequestBody(Json.mediaType))
+                .addHeader("Accept", Json.mediaType.toString())
         }.execute { responseBody ->
             logger.info("Finished closing repository '${repo.id}': '${responseBody.string()}'")
         }