import org.gradle.plugins.signing.Sign

buildscript {
    repositories {
        jcenter()
		maven { url 'https://plugins.gradle.org/m2/' }
        maven { url 'https://dl.bintray.com/content/aalmiray/kordamp' }
    }
    dependencies {
        classpath 'org.kordamp:markdown-gradle-plugin:1.0.0'
		classpath 'org.kordamp.gradle:clirr-gradle-plugin:0.2.2'
		classpath "org.kt3k.gradle.plugin:coveralls-gradle-plugin:2.3.1"
    }
}

plugins {
    id 'ru.vyarus.animalsniffer' version '1.5.0'
	id 'net.ltgt.errorprone' version '0.8'
}

apply plugin: 'org.kordamp.gradle.markdown'

apply from: 'version.gradle'

allprojects {
	apply plugin: 'java'
	apply plugin: 'java-library'
	apply plugin: 'eclipse'
	apply plugin: 'idea'
	apply plugin: 'jacoco'
	apply plugin: 'net.ltgt.errorprone'

	ext {
		gitCommit = getGitCommit()
		javadocAllDir = new File(buildDir, 'javadoc')
		documentationDir = new File(buildDir, 'documentation')
		releasedocsDir = new File(buildDir, 'releasedocs')
		rootConfigDir = new File(rootDir, 'config')
		sonatypeCredentialsAvailable = project.hasProperty('sonatypeUsername') && project.hasProperty('sonatypePassword')
		isReleaseVersion = !isSnapshot
		signingRequired = isReleaseVersion
		sonatypeSnapshotUrl = 'https://oss.sonatype.org/content/repositories/snapshots'
		sonatypeStagingUrl = 'https://oss.sonatype.org/service/local/staging/deploy/maven2'
		// Returns only the date in yyyy-MM-dd format, as otherwise, with
		// hh:mm:ss information, the manifest files would change with every
		// build, causing unnecessary rebuilds.
		builtDate = (new java.text.SimpleDateFormat("yyyy-MM-dd")).format(new Date())
		oneLineDesc = 'An Open Source XMPP (Jabber) client library'
		integrationTestProjects = [
			':smack-integration-test',
			':smack-omemo-signal-integration-test',
		].collect{ project(it) }
		javadocAllProjects = subprojects - integrationTestProjects
		// A dirty hack used for Gradle's jacoco plugin, since is not
		// hable to handle the case when a (sub)project has no unit
		// tests. :-(
		projectsWithoutUnitTests = [
			':smack-android',
			':smack-android-extensions',
			':smack-bosh',
			':smack-compression-jzlib',
			':smack-debug',
			':smack-debug-slf4j',
			':smack-java7',
			':smack-jingle-old',
			':smack-resolver-dnsjava',
			':smack-resolver-javax',
			':smack-resolver-minidns',
			':smack-omemo-signal-integration-test',
		].collect{ project(it) }
		projectsWithUnitTests = subprojects - projectsWithoutUnitTests
		androidProjects = [
			':smack-tcp',
			':smack-bosh',
			':smack-core',
			':smack-im',
			':smack-resolver-minidns',
			':smack-sasl-provided',
			':smack-extensions',
			':smack-experimental',
			':smack-omemo',
			':smack-omemo-signal',
			':smack-openpgp',
			':smack-xmlparser',
			':smack-xmlparser-xpp3',
		].collect{ project(it) }
		androidBootClasspathProjects = [
			':smack-android',
			':smack-android-extensions',
		].collect{ project(it) }
		androidOptionalProjects = [
			':smack-tcp',
			':smack-extensions',
			':smack-experimental',
			':smack-bosh',
			':smack-omemo',
			':smack-omemo-signal',
		].collect{ project(it) }
		gplLicensedProjects = [
			':smack-omemo-signal',
			':smack-omemo-signal-integration-test',
			':smack-repl'
		].collect{ project(it) }
		// When this list is empty, then move the according javadoc
		// tool Werror option into the global configure section.
		nonStrictJavadocProjects = [
			':smack-bosh',
			':smack-core',
			':smack-experimental',
			':smack-extensions',
			':smack-im',
			':smack-integration-test',
			':smack-jingle-old',
			':smack-legacy',
			':smack-omemo',
			':smack-tcp',
		].collect{ project(it) }
		// Lazily evaluate the Android bootClasspath and offline
		// Javadoc using a closure, so that targets which do not
		// require it are still able to succeed without an Android
		// SDK.
		androidBootClasspath = { getAndroidRuntimeJar() }
		androidJavadocOffline = { getAndroidJavadocOffline() }
		junit4Projects = [
			':smack-core',
			':smack-extensions',
			':smack-im',
			':smack-integration-test',
			':smack-omemo',
			':smack-omemo-signal',
			':smack-openpgp',
		].collect { project(it) }
		junitVersion = '5.4.2'
		powerMockVersion = '2.0.2'
	}
	group = 'org.igniterealtime.smack'
	sourceCompatibility = JavaVersion.VERSION_1_8
	targetCompatibility = sourceCompatibility
	version = shortVersion
	if (isSnapshot) {
		version += '-SNAPSHOT'
	}

	test {
		useJUnitPlatform()

		maxParallelForks = Runtime.runtime.availableProcessors().intdiv(2) ?: 1

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

	ext.sharedManifest = manifest {
		attributes('Implementation-Version': version,
				   'Implementation-GitRevision': ext.gitCommit,
				   // According to OSGi core 5.0 section 3.2.5 the qualifier (the fourth
				   // version element) must begin with a dot. So we replace only the
				   // first occurence of an dash with a dot.
				   // For example 4.0.0-rc1 becomes 4.0.0.rc1, but
				   // 4.0.0-SNAPSHOT-2014-05-01 becomes 4.0.0.SNAPSHOT-2014-05-01
				   'Bundle-Version': version.replaceFirst("-", "."),
				   'Built-Date': ext.builtDate,
				   'Built-JDK': System.getProperty('java.version'),
				   'Built-Gradle': gradle.gradleVersion,
				   'Built-By': System.getProperty('user.name')
				  )
	}

	eclipse {
		classpath {
			downloadJavadoc = true
		}
	}

	repositories {
		mavenLocal()
		mavenCentral()
		// Add OSS Sonatype Snapshot repository
		maven {
			url 'https://oss.sonatype.org/content/repositories/snapshots'
		}
	}

	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 = 'UTF-8'
		options.compilerArgs = [
			'-Xlint:all',
			// Set '-options' because a non-java7 javac will emit a
			// warning if source/traget is set to 1.7 and
			// bootclasspath is *not* set.
			// TODO implement a sound heuristic to determine a java7
			// rt.jar on the build host. And if none is found,
			// fallback to using a environment variable,
			// e.g. JAVA7_HOME. See SMACK-651.
			'-Xlint:-options',
			'-Werror',
		]
		options.errorprone {
			error("UnusedVariable", "UnusedMethod")
			errorproneArgs = [
				// Disable errorprone checks
				'-Xep:TypeParameterUnusedInFormals:OFF',
				// Disable errorpone StringSplitter check, as it
				// recommends using Splitter from Guava, which we don't
				// have (nor want to use in Smack).
				'-Xep:StringSplitter:OFF',
				'-Xep:JdkObsolete:OFF',
				// Disabled because sinttest re-uses BeforeClass from junit.
				// TODO: change sinttest so that it has it's own
				// BeforeClass and re-enable this check.
				'-Xep:JUnit4ClassAnnotationNonStatic:OFF',
				// Disabled but should be re-enabled at some point
				//'-Xep:InconsistentCapitalization:OFF',
				'-Xep:MixedMutabilityReturnType:OFF',
			]
		}
	}

	tasks.withType(ScalaCompile) {
		scalaCompileOptions.additionalParameters = [
			'-Xfatal-warnings',
			'-feature',
		]
	}

	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
		}
	}

	if (JavaVersion.current().isJava8Compatible()) {
		tasks.withType(Javadoc) {
			// The '-quiet' as second argument is actually a hack,
			// since the one paramater addStringOption doesn't seem to
			// work, we extra add '-quiet', which is added anyway by
			// gradle.
			options.addStringOption('Xdoclint:all', '-quiet')

			// TODO: Add

			// Treat warnings as errors.
			// See also https://bugs.openjdk.java.net/browse/JDK-8200363
			// options.addStringOption('Xwerror', '-quiet')

			// after all javadoc warnings have been resolved and
			// remove Xwerror from the subprojects build.gradle files
			// (e.g. smack-android-extensions).
		}
	}
	tasks.withType(Javadoc) {
		options.charSet = "UTF-8"
		options.encoding = 'UTF-8'
	}

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

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

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

configure (junit4Projects) {
	dependencies {
		testImplementation "org.junit.vintage:junit-vintage-engine:$junitVersion"
		testImplementation "org.powermock:powermock-module-junit4:$powerMockVersion"
		testImplementation "org.powermock:powermock-module-junit4-rule:$powerMockVersion"
		testImplementation "org.powermock:powermock-api-mockito2:$powerMockVersion"
	}
}

task copyAllJavadocDocFiles(type: Copy) {
	from javadocAllProjects.collect { project ->
		"${project.projectDir}/src/javadoc" }
	into javadocAllDir
	include '**/doc-files/*.*'
}

task javadocAll(type: Javadoc, dependsOn: copyAllJavadocDocFiles) {
	source javadocAllProjects.collect {project ->
		project.sourceSets.main.allJava }
	destinationDir = javadocAllDir
	// Might need a classpath
	classpath = files(subprojects.collect {project ->
		project.sourceSets.main.compileClasspath})
	classpath += files(androidBootClasspath)
	options {
		linkSource = true
		use = true
		links = [
		"https://docs.oracle.com/javase/${sourceCompatibility.getMajorVersion()}/docs/api/",
		"https://jxmpp.org/releases/$jxmppVersion/javadoc/",
		"https://minidns.org/releases/$miniDnsVersion/javadoc/",
		] as String[]
		overview = "$projectDir/resources/javadoc-overview.html"
	}
}

import org.apache.tools.ant.filters.ReplaceTokens
task prepareReleasedocs(type: Copy) {
	from 'resources/releasedocs'
	into releasedocsDir
	filter(ReplaceTokens, tokens: [version: version, releasedate: builtDate, targetCompatibility: targetCompatibility.toString()])
}

markdownToHtml {
	sourceDir = new File(projectDir, "/documentation")
	outputDir documentationDir
	configuration = [tables: true, fencedCodeBlocks: true]
}

task distributionZip(type: Zip, dependsOn: [javadocAll, prepareReleasedocs, markdownToHtml]) {
	classifier builtDate
	into ('javadoc') {
		from(javadocAllDir)
	}
	into ('releasedocs') {
		from(releasedocsDir)
	}
	into ('releasedocs/documentation') {
		from(documentationDir)
	}
}

task maybeCheckForSnapshotDependencies {
	// Don't check for Snapshot dependencies if this is a snapshot.
	onlyIf { isReleaseVersion }
	// Run in the execution phase, not in configuration phase, as the
	// 'each' forces the runtime configuration to be resovled, which
	// causes "Cannot change dependencies of configuration after it
	// has been included in dependency resolution." errors.
	// See https://discuss.gradle.org/t/23153
	doLast {
		allprojects { project ->
			project.configurations.runtime.each {
				if (it.toString().contains("-SNAPSHOT"))
					throw new Exception("Release build contains snapshot dependencies: " + it)
			}
		}
	}
}

test { dependsOn maybeCheckForSnapshotDependencies }

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

// Disable upload archives for the root project
uploadArchives.enabled = false

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

evaluationDependsOnChildren()
subprojects {
	apply plugin: 'maven'
	apply plugin: 'signing'
	apply plugin: 'checkstyle'
	apply plugin: 'org.kordamp.gradle.clirr'

	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 testJar(type: Jar, dependsOn: testClasses) {
		classifier = 'tests'
		from sourceSets.test.output
	}

	// Does install unique snapshosts (and release)s in the local maven
	// repository, unlike the 'install' task.
	// You can specify the path of the local maven repository using 'maven.repo.local', e.g.
	// gradle uploadLocal -Dmaven.repo.local=/var/www/repo
	task uploadLocal(type: Upload) {
		description "Uploads artifacts into the local maven repositories URL."
		configuration = configurations['archives']
		repositories {
			mavenDeployer {
				repository url: repositories.mavenLocal().url
			}
		}
	}

	configurations {
		archivesOutput.extendsFrom (testCompile)
	}

	artifacts {
		archives sourcesJar
		archives javadocJar
		archives testJar
		// See http://stackoverflow.com/a/21946676/194894
		testRuntime testJar
	}

	uploadArchives {
		repositories {
			mavenDeployer {
				if (signingRequired) {
					beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }
				}
				repository(url: project.sonatypeStagingUrl) {
					if (sonatypeCredentialsAvailable) {
						authentication(userName: sonatypeUsername, password: sonatypePassword)
					}
				}
				snapshotRepository(url: project.sonatypeSnapshotUrl) {
					if (sonatypeCredentialsAvailable) {
						authentication(userName: sonatypeUsername, password: sonatypePassword)
					}
				}

				pom.project {
					name 'Smack'
					packaging 'jar'
					inceptionYear '2003'
					url 'http://www.igniterealtime.org/projects/smack/'
					description project.description

					issueManagement {
						system 'JIRA'
						url 'https://igniterealtime.org/issues/browse/SMACK'
					}

					distributionManagement {
						snapshotRepository {
							id 'smack.snapshot'
							url project.sonatypeSnapshotUrl
						}
					}

					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'
					}

					developers {
						developer {
							id 'flow'
							name 'Florian Schmaus'
							email 'flow@igniterealtime.org'
						}
					}
				}
			}
		}
	}
	rootProject.distributionZip {
		dependsOn build
		from(buildDir) {
			include "$libsDirName/*${version}.jar"
			include "$libsDirName/*${version}-javadoc.jar"
			include "$libsDirName/*${version}-sources.jar"
		}
	}

	// 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 {
		useGpgCmd()
		required { signingRequired }
		sign configurations.archives
	}

	clirr {
		// 2018-08-14: Disabled Clirr because
		// - It reports an breaking change in android.jar (seems right, but there is nothing we can do about it)
		// - Only the first smack-* projects are correctly checked,
		//   the other ones have the output of a clirr report from a previous project
		//   (Look at the clirr reports).
		enabled false
		semver false
	}

	// Work around https://github.com/gradle/gradle/issues/4046
	javadoc.dependsOn('copyJavadocDocFiles')
	task copyJavadocDocFiles(type: Copy) {
		from('src/javadoc')
		into 'build/docs/javadoc'
		include '**/doc-files/*.*'
	}

	// If this subproject has a Makefile then make copyJavadocDocFiles
	// and the root project's javadocAll task dependend on
	// generateFiles.
	if (file("$projectDir/Makefile").exists()) {
		copyJavadocDocFiles.dependsOn('generateFiles')
		rootProject.copyAllJavadocDocFiles.dependsOn("${project.name}:generateFiles")
		task generateFiles(type: Exec) {
			workingDir projectDir
			commandLine 'make'
		}

		clean.dependsOn('cleanGeneratedFiles')
		rootProject.clean.dependsOn("${project.name}:cleanGeneratedFiles")
		task cleanGeneratedFiles(type: Exec) {
			workingDir projectDir
			commandLine 'make', 'clean'
		}
	}
}

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

// There is no need to ever clirr integration test projects and the
// smack-repl project.
configure(integrationTestProjects + project(':smack-repl')) {
	clirr {
		enabled false
	}
}

// Disable clirr on omemo modules
project(':smack-omemo').clirr.enabled = false
project(':smack-omemo-signal').clirr.enabled = false

subprojects*.jar {
   manifest {
       from sharedManifest
   }
}

configure(subprojects - nonStrictJavadocProjects) {
	tasks.withType(Javadoc) {
		// 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')
	}
}

configure(subprojects - gplLicensedProjects) {
	checkstyle {
		configProperties.checkstyleLicenseHeader = "header"
	}
	uploadArchives {
		repositories {
			mavenDeployer {
				pom.project {
					licenses {
						license {
							name 'The Apache Software License, Version 2.0'
							url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
							distribution 'repo'
						}
					}
				}
			}
		}
	}
}

configure(gplLicensedProjects) {
	checkstyle {
		configProperties.checkstyleLicenseHeader = "${project.name}-gplv3-license-header"
	}
	uploadArchives {
	repositories {
		mavenDeployer {
			pom.project {
				licenses {
					license {
						name 'GNU General Public License, version 3 or any later version'
						url 'https://www.gnu.org/licenses/gpl.txt'
						distribution 'repo'
					}
				}
			}
		}
	}
}

}

configure(androidBootClasspathProjects) {
	compileJava {
		options.bootstrapClasspath = files(androidBootClasspath)
	}
	javadoc {
		classpath += files(androidBootClasspath)
	}
}

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 = projectsWithUnitTests.jacocoTestReport
	getSourceDirectories().setFrom(files(projectsWithUnitTests.sourceSets.main.allSource.srcDirs))
	getClassDirectories().setFrom(files(projectsWithUnitTests.sourceSets.main.output))
	getExecutionData().setFrom(files(projectsWithUnitTests.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 projectsWithUnitTests is wrong (e.g. a project is missing
	// in there).
	setOnlyIf { true }
}

// Important to specify this task after the subprojects block
task clirrRootReport(type: org.kordamp.gradle.clirr.ClirrReportTask) {
	dependsOn = subprojects.tasks.clirr
	reports = files((subprojects.findAll { it.clirr.enabled == true }).tasks.clirr.xmlReport)
}

task integrationTest {
	description 'Verify correct functionality of Smack by running some integration tests.'
	dependsOn project(':smack-integration-test').tasks.run
}

task omemoSignalIntTest {
	description 'Run integration tests of the smack-omemo module in combination with smack-omemo-signal.'
	dependsOn project(':smack-omemo-signal-integration-test').tasks.run
}

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

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

    def srCmd = 'git symbolic-ref --short HEAD'
    def srProc = srCmd.execute()
    srProc.waitForOrKill(10 * 1000)
    if (srProc.exitValue() == 0) {
        // Only add the information if the git command was
        // successful. There may be no symbolic reference for HEAD if
        // e.g. in detached mode.
        def symbolicReference = srProc.text.trim()
        assert !symbolicReference.isEmpty()
        gitCommit += "-$symbolicReference"
    }

	gitCommit
}

def getAndroidRuntimeJar() {
	def androidApiLevel = ext.smackMinAndroidSdk
	def androidHome = getAndroidHome()
	def androidJar = new File("$androidHome/platforms/android-${androidApiLevel}/android.jar")
	if (androidJar.isFile()) {
		return androidJar
	} else {
		throw new Exception("Can't find android.jar for $androidApiLevel API. Please install corresponding SDK platform package")
	}
}

def getAndroidJavadocOffline() {
	def androidHome = getAndroidHome()
	return androidHome.toString() + "/docs/reference"
}

def getAndroidHome() {
	def androidHomeEnv = System.getenv("ANDROID_HOME")
	if (androidHomeEnv == null) {
		throw new Exception("ANDROID_HOME environment variable is not set")
	}
	def androidHome = new File(androidHomeEnv)
	if (!androidHome.isDirectory()) throw new Exception("Environment variable ANDROID_HOME is not pointing to a directory")
	return androidHome
}