Add publication to Sonatype repository (#6)

Resolves #2

Author: OptimumCode

.gitignore

@@ -2,4 +2,7 @@
 build/
 out/
 
-.gradle/
+.gradle/
+
+# to keep the local secrets from been published
+local.properties

build.gradle.kts

@@ -1,6 +1,7 @@
 import io.gitlab.arturbosch.detekt.Detekt
 import org.jlleitschuh.gradle.ktlint.reporter.ReporterType
 
+@Suppress("DSL_SCOPE_VIOLATION") // TODO: remove when migrate to Gradle 8
 plugins {
   alias(libs.plugins.kotlin.mutliplatform)
   alias(libs.plugins.kotlin.serialization)
@@ -10,7 +11,8 @@ plugins {
   alias(libs.plugins.ktlint)
   alias(libs.plugins.kotlin.binaryCompatibility)
   alias(libs.plugins.kotlin.dokka)
-  `maven-publish`
+  alias(libs.plugins.nexus.publish)
+  id("convention.publication")
 }
 
 repositories {
@@ -109,10 +111,27 @@ ktlint {
   }
 }
 
-private val detektAllTask by tasks.register("detektAll") {
-  dependsOn(tasks.withType<Detekt>())
+afterEvaluate {
+  val detektAllTask by tasks.register("detektAll") {
+    dependsOn(tasks.withType<Detekt>())
+  }
+
+  tasks.named("check").configure {
+    dependsOn(detektAllTask)
+  }
 }
 
-tasks.named("check") {
-  dependsOn(detektAllTask)
+val ossrhUsername: String by project.ext
+val ossrhPassword: String by project.ext
+
+nexusPublishing {
+  this.repositories {
+    sonatype {
+      nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
+      snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))
+
+      username.set(ossrhUsername)
+      password.set(ossrhPassword)
+    }
+  }
 }

buildSrc/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+  `kotlin-dsl`
+}
+
+repositories {
+  gradlePluginPortal()
+}

buildSrc/src/main/kotlin/convention.publication.gradle.kts

@@ -0,0 +1,83 @@
+import java.util.Properties
+
+plugins {
+  `maven-publish`
+  signing
+}
+
+ext["signing.keyId"] = ""
+ext["signing.password"] = ""
+ext["signing.key"] = ""
+ext["ossrhUsername"] = ""
+ext["ossrhPassword"] = ""
+
+val secretPropsFile: File = project.rootProject.file("local.properties")
+if (secretPropsFile.exists()) {
+  secretPropsFile.reader().use {
+    Properties().apply {
+      load(it)
+    }
+  }.onEach { (name, value) ->
+    ext[name.toString()] = value
+  }
+} else {
+  ext["signing.keyId"] = System.getenv("SIGNING_KEY_ID")
+  ext["signing.password"] = System.getenv("SIGNING_PASSWORD")
+  ext["signing.keys"] = System.getenv("SIGNING_SECRET_KEY")
+  ext["ossrhUsername"] = System.getenv("OSSRH_USERNAME")
+  ext["ossrhPassword"] = System.getenv("OSSRH_PASSWORD")
+}
+
+val javadocJar by tasks.registering(Jar::class) {
+  archiveClassifier.set("javadoc")
+}
+
+fun getExtraString(name: String) = ext[name]?.toString()
+
+afterEvaluate {
+  publishing {
+
+    publications.withType<MavenPublication> {
+      // Stub javadoc.jar artifact
+      artifact(javadocJar)
+
+      pom {
+        name.set("JSON schema validator")
+        description.set("Multiplatform Kotlin implementation of JSON schema validator")
+        url.set("https://github.com/OptimumCode/json-schema-validator")
+
+        licenses {
+          license {
+            name.set("MIT")
+            url.set("https://opensource.org/licenses/MIT")
+          }
+        }
+        developers {
+          developer {
+            id.set("OptimumCode")
+            name.set("Oleg Smirnov")
+            email.set("oleg31101996@gmail.com")
+          }
+        }
+        scm {
+          url.set("https://github.com/OptimumCode/json-schema-validator")
+        }
+      }
+    }
+  }
+
+  val signTasks = tasks.withType<Sign>()
+  // otherwise, the publication fails because some task uses sign output but do not declare that
+  tasks.withType<AbstractPublishToMaven> {
+    mustRunAfter(signTasks)
+  }
+}
+
+signing {
+  useInMemoryPgpKeys(
+    getExtraString("signing.keyId"),
+    getExtraString("signing.keys"),
+    getExtraString("signing.password"),
+  )
+  sign(publishing.publications)
+}

gradle.properties

@@ -1,5 +1,7 @@
 kotlin.code.style=official
 kotlin.js.compiler=ir
+org.gradle.jvmargs=-Xmx1G
+org.gradle.java.installations.auto-download=false
 
 version=0.0.1
 group=io.github.optimumcode

gradle/libs.versions.toml

@@ -13,6 +13,7 @@ kover = { id = "org.jetbrains.kotlinx.kover", version = "0.7.1" }
 detekt = { id = "io.gitlab.arturbosch.detekt", version.ref = "detekt" }
 ktlint = { id = "org.jlleitschuh.gradle.ktlint", version = "11.5.0" }
 kotlin-binaryCompatibility = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version = "0.13.2" }
+nexus-publish = { id = "io.github.gradle-nexus.publish-plugin", version = "1.3.0" }
 
 [libraries]
 kotlin-serialization-json = { group = "org.jetbrains.kotlinx", name = "kotlinx-serialization-json", version = "1.5.1" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists