Add promoteToMavenCentral task

Author: vanitasvitae

build.gradle

@@ -190,6 +190,56 @@ subprojects {
         required { signingRequired }
         sign publishing.publications.mavenJava
     }
+
+    // see https://github.com/conductor-oss/conductor/blob/main/deploy.gradle#L76-L129
+    task promoteToMavenCentral {
+        group = 'publishing'
+        description = 'Promotes staged artifacts to Maven Central'
+
+        onlyIf {
+            sonatypeCredentialsAvailable && !isSnapshot
+        }
+
+        doLast {
+            // Create base64 encoded token for authentication
+            def token = "${sonatypeUsername}:${sonatypePassword}".bytes.encodeBase64().toString()
+
+            // Get open staging repositories
+            def response = new URL("https://ossrh-staging-api.central.sonatype.com/manual/search/repositories")
+                    .openConnection()
+            response.setRequestProperty("Authorization", "Basic ${token}")
+            response.setRequestProperty("Content-Type", "application/json")
+
+            def repositories = new groovy.json.JsonSlurper().parse(response.inputStream)
+
+            // Promote each open repository
+            repositories.repositories.each { repo ->
+                if (repo.state == "open") {
+                    project.logger.lifecycle("Promoting repository ${repo.key}")
+
+                    def promoteUrl = new URL("https://ossrh-staging-api.central.sonatype.com/manual/upload/repository/${repo.key}?publishing_type=automatic")
+                    def connection = promoteUrl.openConnection()
+                    connection.setRequestMethod("POST")
+                    connection.setRequestProperty("Authorization", "Basic ${token}")
+                    connection.setRequestProperty("Content-Type", "application/json")
+
+                    def responseCode = connection.responseCode
+                    if (responseCode == 200) {
+                        project.logger.lifecycle("Successfully promoted repository ${repo.key}")
+                    } else {
+                        def errorStream = connection.errorStream
+                        def errorBody = errorStream ? errorStream.text : "No error body available"
+                        def errorMessage = "Failed to promote repository ${repo.key}. Response code: ${responseCode}. Response message: ${connection.responseMessage}. Error body: ${errorBody}"
+                        project.logger.error(errorMessage)
+                        //throw new GradleException(errorMessage)
+                    }
+                }
+            }
+        }
+    }
+    tasks.matching { it.name == 'publish' }.configureEach { publishTask ->
+        publishTask.finalizedBy tasks.promoteToMavenCentral
+    }
 }
 
 def getGitCommit() {