buildscript {
	repositories {
		maven {
			url "https://plugins.gradle.org/m2/"
		}
		mavenCentral()
	}

	dependencies {
		classpath "org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.8.2"
	}
}

plugins {
	id 'ru.vyarus.animalsniffer' version '1.5.0'
	id 'net.ltgt.errorprone' version '0.8.1'
	id 'me.champeau.gradle.jmh' version '0.4.8'
}

allprojects {
	apply plugin: 'java'
	apply plugin: 'eclipse'
	apply plugin: 'idea'
	apply plugin: 'jacoco'

	repositories {
		mavenLocal()
		mavenCentral()
	}

	version readVersionFile()

	ext {
		isSnapshot = version.endsWith('-SNAPSHOT')
		gitCommit = getGitCommit()
		javadocAllDir = new File(buildDir, 'javadoc')
		documentationDir = new File(projectDir, 'documentation')
		releasedocsDir = new File(buildDir, 'releasedocs')
		rootConfigDir = new File(rootDir, 'config')
		sonatypeCredentialsAvailable = project.hasProperty('sonatypeUsername') && project.hasProperty('sonatypePassword')
		isReleaseVersion = !isSnapshot
		isContinuousIntegrationEnvironment = Boolean.parseBoolean(System.getenv('CI'))
		signingRequired = !(isSnapshot || isContinuousIntegrationEnvironment)
		sonatypeSnapshotUrl = 'https://oss.sonatype.org/content/repositories/snapshots'
		sonatypeStagingUrl = 'https://oss.sonatype.org/service/local/staging/deploy/maven2'
		builtDate = (new java.text.SimpleDateFormat("yyyy-MM-dd")).format(new Date())
		oneLineDesc = 'An Open Source XMPP (Jabber) library'
		androidProjects = [':jxmpp-core', ':jxmpp-jid', ':jxmpp-stringprep-libidn', ':jxmpp-util-cache'].collect{ project(it) }
		jmhProjects = [':jxmpp-util-cache'].collect { project(it) }
		junit4Projects = [
			':jxmpp-core',
			':jxmpp-jid',
			':jxmpp-repl',
			':jxmpp-stringprep-icu4j',
			':jxmpp-stringprep-libidn',
			':jxmpp-util-cache',
		].collect { project(it) }
		// Only enable Error Prone for non JMH projects, as JMH
		// uses generated Java source code which is prone to Error
		// Prone bug patterns.
		errorProneProjects = subprojects - project(":jxmpp-util-cache")
		junitVersion = '5.6.1'
		javaCompatilibity = JavaVersion.VERSION_1_8
		javaMajor = javaCompatilibity.getMajorVersion()
		jxmppMinAndroidSdk = 19
	}

	group = 'org.jxmpp'
	sourceCompatibility = javaCompatilibity
	targetCompatibility = sourceCompatibility

	ext.sharedManifest = manifest {
		attributes('Implementation-Version': version,
				   'Implementation-GitRevision': ext.gitCommit,
				   'Built-Date': ext.builtDate,
				   'Built-JDK': System.getProperty('java.version'),
				   'Built-Gradle': gradle.gradleVersion,
				   'Built-By': System.getProperty('user.name')
				  )
	}

	eclipse {
		classpath {
			downloadJavadoc = true
		}
	}

	// Make all project's 'test' target depend on javadoc, so that
	// javadoc is also linted.
	test.dependsOn javadoc

	tasks.withType(JavaCompile) {
		// Some systems may not have set their platform default
		// converter to 'utf8', but we use unicode in our source
		// files. Therefore ensure that javac uses unicode
		options.encoding = "utf8"
		options.compilerArgs = [
			'-Xlint:all',
			// Set '-options' because a non-java7 javac will emit a
			// warning if source/target is set to 1.7 and
			// bootclasspath is *not* set.
			'-Xlint:-options',
			'-Werror',
		]
	}
	if (JavaVersion.current().isJava8Compatible()) {
		tasks.withType(Javadoc) {
			// The '-quiet' as second argument is actually a hack,
			// since the one parameter addStringOption doesn't seem to
			// work, we extra add '-quiet', which is added anyway by
			// gradle.
			options.addStringOption('Xdoclint:all', '-quiet')
			// Abort on javadoc warnings.
			// See JDK-8200363 (https://bugs.openjdk.java.net/browse/JDK-8200363)
			// for information about the -Xwerror option.
			options.addStringOption('Xwerror', '-quiet')
		}
	}

	if (JavaVersion.current().isJava9Compatible()) {
		tasks.withType(Javadoc) {
			options.addStringOption('-release', javaMajor)
		}
		tasks.withType(JavaCompile) {
			options.compilerArgs.addAll([
				'--release', javaMajor,
			])
		}
	}

	tasks.withType(Javadoc) {
		options.charSet = "UTF-8"
	}

	jacoco {
		toolVersion = "0.8.3"
	}

	jacocoTestReport {
		dependsOn test
		getSourceDirectories().setFrom(project.files(sourceSets.main.allSource.srcDirs))
		getClassDirectories().setFrom(project.files(sourceSets.main.output))
		reports {
			xml.enabled true
		}
	}

	dependencies {
		testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
		testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
	}

	test {
		useJUnitPlatform()
		// Enable full stacktraces of failed tests. Especially handy
		// for environments like Travis.
		testLogging {
			events "failed"
			exceptionFormat "full"
		}
	}
}

task javadocAll(type: Javadoc) {
	source subprojects.collect {project ->
		project.sourceSets.main.allJava }
	destinationDir = javadocAllDir
	// Might need a classpath
	classpath = files(subprojects.collect {project ->
		project.sourceSets.main.compileClasspath})
	options.linkSource = true
	options.use = true
	options.links = ["https://docs.oracle.com/javase/${javaMajor}/docs/api/"] as String[]
}

task distributionZip(type: Zip, dependsOn: [javadocAll]) {
	classifier builtDate
	into ('javadoc') {
		from(javadocAllDir)
	}
}

jar {
	// Root project should not create empty jar artifact
	enabled = false
}

description = """\
JXMPP ${version}
${oneLineDesc}."""

// Disable uploadArchives task for the root project
uploadArchives.enabled = false

evaluationDependsOnChildren()
subprojects {
	apply plugin: 'maven-publish'
	apply plugin: 'signing'
	apply plugin: 'checkstyle'

	checkstyle {
		toolVersion = '8.22'
	}
	task sourcesJar(type: Jar, dependsOn: classes) {
		classifier = 'sources'
		from sourceSets.main.allSource
	}
	task javadocJar(type: Jar, dependsOn: javadoc) {
		classifier = 'javadoc'
		from javadoc.destinationDir
	}
	task testsJar(type: Jar) {
		classifier = 'tests'
		from sourceSets.test.output
	}
	artifacts {
		// See http://stackoverflow.com/a/21946676/194894
		testRuntime testsJar
	}

	publishing {
		publications {
			mavenJava(MavenPublication) {
				from components.java
				artifact sourcesJar
				artifact javadocJar
				artifact testsJar
				pom {
					name = 'JXMPP'
					packaging = 'jar'
					inceptionYear = '2014'
					url = 'http://www.igniterealtime.org/projects/jxmpp/'
					description = project.description

					issueManagement {
						system = 'JIRA'
						url = 'http://issues.igniterealtime.org/browse/JXMPP'
					}

					scm {
						url = 'https://github.com/igniterealtime/Smack'
						connection = 'scm:git:https://github.com/igniterealtime/Smack.git'
						developerConnection = 'scm:git:https://github.com/igniterealtime/Smack.git'
					}

					licenses {
						license {
							name = 'The Apache Software License, Version 2.0'
							url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
							distribution = 'repo'
						}
					}

					developers {
						developer {
							id = 'flow'
							name = 'Florian Schmaus'
							email = 'flow@igniterealtime.org'
						}
					}
				}
			}
		}
		repositories {
			maven {
				url isSnapshot ? sonatypeSnapshotUrl : sonatypeStagingUrl
				if (sonatypeCredentialsAvailable) {
					credentials {
						username = sonatypeUsername
						password = sonatypePassword
					}
				}
			}
		}
	}
	rootProject.distributionZip {
		dependsOn build
		from(buildDir) {
			include "$libsDirName/**"
		}
	}

	// Workaround for gpg signatory not supporting the 'required' option
	// See https://github.com/gradle/gradle/issues/5064#issuecomment-381924984
	// Note what we use 'signing.gnupg.keyName' instead of 'signing.keyId'.
	tasks.withType(Sign) {
		onlyIf {
			project.hasProperty('signing.gnupg.keyName')
		}
	}
	signing {
		required { signingRequired }
		useGpgCmd()
		sign publishing.publications.mavenJava
	}
}

configure (errorProneProjects) {
	apply plugin: 'net.ltgt.errorprone'

	tasks.withType(JavaCompile) {
		options.errorprone {
			error(
				"UnusedVariable",
				"UnusedMethod",
				"MethodCanBeStatic",
			)
			errorproneArgs = [
				// Disable MissingCasesInEnumSwitch error prone check
				// because this check is already done by javac as incomplete-switch.
				'-Xep:MissingCasesInEnumSwitch:OFF',
				'-Xep:StringSplitter:OFF',
				'-Xep:JavaTimeDefaultTimeZone:OFF',
			]
		}
	}

	dependencies {
		errorprone 'com.google.errorprone:error_prone_core:2.3.3'
		errorproneJavac('com.google.errorprone:javac:9+181-r4173-1')
	}
}

dependencies {
	androidProjects.each { project ->
		compile project
	}
}

configure (junit4Projects) {
	dependencies {
		testImplementation "junit:junit:4.12"
		testRuntimeOnly "org.junit.vintage:junit-vintage-engine:$junitVersion"
	}
}

configure (androidProjects) {
    apply plugin: 'ru.vyarus.animalsniffer'
    dependencies {
        signature "net.sf.androidscents.signature:android-api-level-${jxmppMinAndroidSdk}:4.4.2_r4@signature"
    }
    animalsniffer {
        sourceSets = [sourceSets.main]
    }
}

configure (jmhProjects) {
	apply plugin: "me.champeau.gradle.jmh"

	// From https://github.com/melix/jmh-gradle-plugin/issues/35
	// This should be theoretically not be needed with newer jmh
	// gradle plugin versions. But without the following line "gradle
	// eclipse" will add the jmh dependencies to the classpath
	// TODO: This breaks with parboiled and is thus commented out.
	// project.eclipse.classpath.plusConfigurations += [ configurations.jmh ]

	jmh {
		jmhVersion '1.21'
		iterations 3
		operationsPerInvocation 3
		fork 3
	}
}

apply plugin: "com.github.kt3k.coveralls"
coveralls {
	sourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs).files.absolutePath
}

task jacocoRootReport(type: org.gradle.testing.jacoco.tasks.JacocoReport) {
	dependsOn = subprojects.jacocoTestReport
	getSourceDirectories().setFrom(files(subprojects.sourceSets.main.allSource.srcDirs))
	getClassDirectories().setFrom(files(subprojects.sourceSets.main.output))
	getExecutionData().setFrom(files(subprojects.jacocoTestReport.executionData))
	reports {
		xml.enabled true
		xml.destination file("${buildDir}/reports/jacoco/test/jacocoTestReport.xml")
	}
	// We could remove the following setOnlyIf line, but then
	// jacocoRootReport would silently be SKIPPED if something with
	// the subprojects is wrong (e.g. a project is missing
	// in there).
	setOnlyIf { true }
}

def getGitCommit() {
	def projectDirFile = new File("$projectDir")
	def dotGit = new File(projectDirFile, ".git")
	if (!dotGit.isDirectory()) return 'non-git build'

	def cmd = 'git describe --always --tags --dirty=+'
	def proc = cmd.execute(null, projectDirFile)
	def gitCommit = proc.text.trim()
	assert !gitCommit.isEmpty()
	gitCommit
}

def getAndroidRuntimeJar() {
	def androidHome = new File("$System.env.ANDROID_HOME")
	if (!androidHome.isDirectory()) throw new Exception("ANDROID_HOME not found or set")
	def androidJar = new File("$androidHome/platforms/android-$jxmppMinAndroidSdk/android.jar")
	if (androidJar.isFile()) {
		return androidJar
	} else {
		throw new Exception("Can't find android.jar for $jxmppMinAndroidSdk API. Please install corresponding SDK platform package")
	}
}

def readVersionFile() {
	def versionFile = new File(rootDir, 'version')
	if (!versionFile.isFile()) {
		throw new Exception("Could not find version file")
	}
	if (versionFile.text.isEmpty()) {
		throw new Exception("Version file does not contain a version")
	}
	versionFile.text.trim()
}