publish-root.gradle

// Create variables with empty default values
ext["ossrhUsername"] = ''
ext["ossrhPassword"] = ''
ext["sonatypeStagingProfileId"] = ''
ext["signing.keyId"] = ''
ext["signing.password"] = ''
ext["signing.key"] = ''
ext["snapshot"] = ''

File secretPropsFile = rootProject.file('local.properties')
if (secretPropsFile.exists()) {
    Properties p = new Properties()
    new FileInputStream(secretPropsFile).withCloseable { is -> p.load(is) }
    ext["ossrhUsername"] = p.getProperty("ossrhUsername")
    ext["ossrhPassword"] = p.getProperty("ossrhPassword")
    ext["sonatypeStagingProfileId"] = p.getProperty("sonatypeStagingProfileId")
    ext["signing.keyId"] = p.getProperty("signing.keyId")
    ext["signing.password"] = p.getProperty("signing.password")
    ext["signing.key"] = p.getProperty("signing.key")
    ext["snapshot"] = p.getProperty("snapshot")
} else {
    println("no local.properties")
    ext["ossrhUsername"] = System.getenv('OSSRH_USERNAME')
    ext["ossrhPassword"] = System.getenv('OSSRH_PASSWORD')
    ext["sonatypeStagingProfileId"] = System.getenv('SONATYPE_STAGING_PROFILE_ID')
    ext["signing.keyId"] = System.getenv('SIGNING_KEY_ID')
    ext["signing.password"] = System.getenv('SIGNING_PASSWORD')
    ext["signing.key"] = System.getenv('SIGNING_KEY')
    ext["snapshot"] = System.getenv('SNAPSHOT')
}

// Set up Sonatype repository
nexusPublishing {
    repositories {
        sonatype {
            nexusUrl.set(uri("https://s01.oss.sonatype.org/service/local/"))
            snapshotRepositoryUrl.set(uri("https://s01.oss.sonatype.org/content/repositories/snapshots/"))

            stagingProfileId = sonatypeStagingProfileId
            username = ossrhUsername
            password = ossrhPassword
            version = rootProject.ext.mavenMeta.version
        }
    }
}