/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */

description = 'Support for running Hibernate O/RM in OSGi environments'

apply from: rootProject.file( 'gradle/published-java-module.gradle' )
apply plugin: 'com.github.lburgazzoli.karaf'


ext {
	osgiCoreVersion = '6.0.0'
	osgiCompediumVersion = '5.0.0'
	karafVersion = '4.2.1'
	paxExamVersion = '4.12.0'
}

/*
 * With the current karaf/pax-exam versions and with JDK11.0.3,
 * we get errors like "java.lang.IllegalStateException: Unknown protocol: jrt".
 *
 * This is suspiciously similar to the problems we had on Hibernate Search,
 * and we gave up the idea of fixing those after a few hours.
 *
 * Copy-pasting the explanation from Search (not sure it applies here, but it's likely):
 * > Upgrading to Karaf 4.2.5 fixes that, but then we get errors about "/karaf.log" not being accessible.
 * > Upgrading once again to Pax-exam 4.13.1 fixes that, but then startup looks stuck at some point,
 * > without any particular error even if we raise all the different log levels to "trace".
 * > Upgrading pax-url to 2.6.1 to be in line with the versions in the Karaf pom doesn't change anything.
 * > Strangely, with these upgrades, everything still works fine with JDK8,
 * > but we get in trouble with JDK11.0.0 and above.
 * > A bit ironic since the problems we were trying to solve initially only affected JDK11.0.3,
 * > not JDK11.0.0.
 */
if ( gradle.ext.javaVersions.test.launcher.asInt() >= 11 ) {
	logger.warn( '[WARN] Skipping all tests for hibernate-osgi due to Karaf/Pax-Exam issues with latest JDK 11' )
	test.enabled = false
}


sourceSets {
	test {
		// send javac output and resource copying to the same output directory for test
		// so Pax Exam can more easily find it without explicit TinyBundle hooks
		java.outputDir = file( "${buildDir}/classes/test" )
		output.resourcesDir = java.outputDir
	}
}

configurations {
	karafDistro {
		description = 'Configuration used to isolate the dependency on the Karaf distro'
		transitive = false
	}
	hibernateEnvers {
		description = 'Feature for easily adding Envers support to hibernate-orm'
		transitive = false
	}
}

dependencies {
	compile( project( ':hibernate-core' ) ) {
		// having javax.activation-api as a dependency requires us to have com.sun.activation:javax.activation
		// this dependency wasn't there in the 5.2.x bundles so ignoring it for now
		// we might reintroduce it at some point if users complain about it
		exclude module: 'javax.activation-api'
		// JAXB is included in the Karaf distribution
		exclude module: 'jaxb-api'
		exclude module: 'jaxb-runtime'
	}
	testCompile( project( ':hibernate-envers' ) )

	compile "org.osgi:org.osgi.core:${osgiCoreVersion}"
	compile "org.osgi:org.osgi.compendium:${osgiCompediumVersion}"
	compile "net.bytebuddy:byte-buddy:${byteBuddyVersion}"

	// Needed by JBoss JTA
	runtime( libraries.interceptor )

	testCompile "org.ops4j.pax.exam:pax-exam:${project.paxExamVersion}"
	testCompile "org.ops4j.pax.exam:pax-exam-junit4:${project.paxExamVersion}"
	testCompile "org.ops4j.pax.exam:pax-exam-container-karaf:${project.paxExamVersion}"
	// Need this explicitly in order to use @Inject -> shouldn't this be a transtive dep of pax-exam?
	//      is there ever a pax exam test that *does not* use this?
	testCompile 'javax.inject:javax.inject:1'

	testCompile( "org.apache.karaf:apache-karaf:${project.karafVersion}" ) {
		// having trouble finding this one locally
		exclude group: 'org.eclipse', module: 'org.eclipse.osgi'
		exclude group: 'org.hibernate', module: 'hibernate-osgi'
	}

	karafDistro "org.apache.karaf:apache-karaf:${project.karafVersion}@tar.gz"

	hibernateEnvers( project( ':hibernate-envers' ) )
	hibernateEnvers( libraries.dom4j )
}

jar {
	manifest {
		attributes(
				// BND Plugin instructions (for OSGi):
				'Bundle-Activator': 'org.hibernate.osgi.HibernateBundleActivator',
				'Provide-Capability': 'osgi.service;effective:=active;objectClass=javax.persistence.spi.PersistenceProvider',
				'Import-Package': [
						// TODO: Shouldn't have to explicitly list this, but the plugin
						// generates it with a [1.0,2) version.
						"javax.persistence;version=\"${project.jpaVersion.osgiName}\"",
						"javax.persistence.spi;version=\"${project.jpaVersion.osgiName}\"",
						// Temporarily support JTA 1.1 -- Karaf and other frameworks still
						// use it.  Without this, the plugin generates [1.2,2).
						'javax.transaction;version="[1.1,2)"',
						// Also import every package referenced in the code
						'*'
				].join( ',' )
		)
	}
}


task generateVersionFile {
	File outputFileDir = project.file( "${buildDir}/classes/test/META-INF/hibernate-osgi/" )
	File outputFile = new File( outputFileDir, 'Version.txt' )

	inputs.property( "version", project.version )
	outputs.file outputFile

	doFirst {
		outputFileDir.mkdirs()

		def writer = new FileWriter( outputFile )
		try {
			writer.write( "${project.version}" )
			writer.flush()
		}
		finally {
			writer.close()
		}
	}
}

karaf {
	features {
		xsdVersion  = '1.4.0'
		feature {
			name        = 'hibernate-orm'
			description = 'Combines all Hibernate core dependencies and required modules into a single feature'
			includeProject = true
			feature ('wrap') {
				prerequisite = true
			}
			feature 'transaction-api'
			// Most Hibernate modules declare OSGi metadata through blueprints, so we need this feature
			feature 'aries-blueprint'
		}
		// NOTE : would like to include spatial as well, but we need to wait for
		//		it to not define dependency on postgresql driver
		feature {
			name = 'hibernate-envers'
			description = 'Feature for easily adding Envers support to hibernate-orm'
			includeProject = false
			feature ('wrap') {
				prerequisite = true
			}
			configurations 'hibernateEnvers'
			feature('hibernate-orm') {
				version = project.version
			}
		}
		// The hibernate-infinispan feature is now provided by the Infinispan project.
	}
}

task generateDependsFile {
	// In order to fully use org.ops4j.pax.exam.CoreOptions.maven() stuff
	// we need to generate a META-INF/maven/dependencies.properties file
	// just like the generate-depends-file Maven goal from ServiceMix/Karaf

	File outputFileDir = project.file( 'target/classes/test/META-INF/maven/' )
	File outputFile = new File( outputFileDir, 'dependencies.properties' )

	outputs.file outputFile

	doFirst {
		outputFileDir.mkdirs()

		Properties properties = new Properties();

		// first we add our GAV info
		properties.setProperty( "groupId", "${project.group}" );
		properties.setProperty( "artifactId", project.name );
		properties.setProperty( "version", "${project.version}" );
		properties.setProperty( "${project.group}/${project.name}/version", "${project.version}" );

		// then for all our deps
		project.configurations.testRuntime.resolvedConfiguration.resolvedArtifacts.each {
			final String keyBase = it.moduleVersion.id.group + '/' + it.moduleVersion.id.name;
			properties.setProperty( "${keyBase}/scope", "compile" )
			properties.setProperty( "${keyBase}/type", it.extension )
			properties.setProperty( "${keyBase}/version", it.moduleVersion.id.version )
		}

		FileOutputStream outputStream = new FileOutputStream( outputFile );
		try {
			properties.store( outputStream, "Generated from Gradle by Hibernate build for PaxExam testing of hibernate-osgi module" )
		}
		finally {
			outputStream.close()
		}
	}
}

task generatePaxExamEnvironmentFile {
	// I found this better/easier than duplicating information...
	description = 'Generates a Properties file that the Pax Exam test can access to know information about the test environment'

	File outputFile = new File( sourceSets.test.output.resourcesDir, 'pax-exam-environment.properties' )
	File karafUnpackDirectory = file( "${buildDir}/karaf-unpack" )

	// set up up-to-date checks
	inputs.files( configurations.testRuntime )
	inputs.property( 'karafUnpackDirectory', karafUnpackDirectory )
	outputs.file( outputFile )

	doFirst {
		// should only be one artifacts..
		File karafDistroFile = configurations.karafDistro.resolvedConfiguration.resolvedArtifacts[0].file

		Properties properties = new Properties();
		properties.setProperty( 'org.ops4j.pax.exam.container.karaf.distroUrl', karafDistroFile.toURI().toURL().toExternalForm() )
		properties.setProperty( 'org.ops4j.pax.exam.container.karaf.unpackDir', karafUnpackDirectory.absolutePath )
		properties.setProperty( 'org.ops4j.pax.exam.container.karaf.version', karafVersion as String )
		properties.setProperty( 'org.ops4j.pax.exam.container.karaf.probe.classesDir', sourceSets.test.java.outputDir.absolutePath )
		properties.setProperty( 'org.ops4j.pax.exam.container.karaf.probe.resourcesDir', sourceSets.test.output.resourcesDir.absolutePath )
		properties.setProperty( 'org.hibernate.osgi.test.karafFeatureFile', karaf.features.outputFile.absolutePath )

		outputFile.parentFile.mkdirs()

		FileOutputStream outputStream = new FileOutputStream( outputFile );
		try {
			properties.store( outputStream, "Generated from Gradle by Hibernate build for PaxExam testing of hibernate-osgi module" )
		}
		finally {
			outputStream.close()
		}
	}
}

tasks.test.dependsOn tasks.generateFeatures
tasks.test.dependsOn tasks.jar
tasks.test.dependsOn tasks.generateDependsFile
tasks.test.dependsOn tasks.generatePaxExamEnvironmentFile

// we also need to make sure that hibernate-core, hibernate-entitymanager and hibernate-osgi
// are published to maven-local before running tests
tasks.test.dependsOn rootProject.childProjects.'hibernate-core'.tasks.publishToMavenLocal
tasks.test.dependsOn rootProject.childProjects.'hibernate-envers'.tasks.publishToMavenLocal
tasks.test.dependsOn tasks.publishToMavenLocal

publishing {
	publications {
		publishedArtifacts( MavenPublication ) {
			artifact( project.extensions.karaf.features.outputFile ) {
				classifier 'karaf'
				builtBy generateFeatures
			}
		}
	}
}