import java.nio.charset.StandardCharsets
import java.util.function.Function

import groovy.json.JsonSlurper

/*
 * 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>.
 */
apply from: rootProject.file( 'gradle/module.gradle' )

apply plugin: 'org.hibernate.orm.build.doc-pub'
apply plugin: 'idea'

idea.module {
}

configurations {
    core

    testing

    envers
    spatial

    agroal
    c3p0
    hikaricp
    proxool
    vibur

    jcache

    jpamodelgen

    javadocClasspath {
        description = 'Class files for the javadoc to be built'
        resolutionStrategy.capabilitiesResolution.withCapability('org.junit.jupiter:junit-jupiter-params:5.7.1') { details ->
            details.select( details.candidates.first() ).because( 'first' )
        }

        extendsFrom core
        extendsFrom testing
        extendsFrom envers
        extendsFrom spatial
        extendsFrom agroal
        extendsFrom c3p0
        extendsFrom hikaricp
        extendsFrom proxool
        extendsFrom vibur
        extendsFrom jcache
        extendsFrom jpamodelgen
    }

    javadocSources {
        description = 'Source files to be built by the javadoc tool'
    }
}

// skip building this when `build` task is run from root, as many of our CI jobs do
tasks.build.dependsOn.clear()

dependencies {
    attributesSchema { schema ->
        schema.attribute(Bundling.BUNDLING_ATTRIBUTE) { matchStrategy ->
             final def nameComparator = Comparator.comparing(
                    new Function<Bundling,String>() {
                        @Override
                        String apply(Bundling o) {
                            return o.name
                        }
                    }
            )
            matchStrategy.ordered(new Comparator<Bundling>() {
                @Override
                int compare(Bundling o1, Bundling o2) {
                    if ( Objects.equals( o1, o2 ) ) {
                        return 0;
                    }

                    if ( o1 == null ) {
                        return 1;
                    }

                    if ( o2 == null ) {
                        return -1;
                    }

                    if ( o1.name == Bundling.EMBEDDED ) {
                        return -1;
                    }

                    if ( o2.name == Bundling.EMBEDDED ) {
                        return 1;
                    }

                    return nameComparator.compare(o1,o2)
                }
            } )
        }
    }

    core project( ':hibernate-core' )
    javadocSources project( path: ':hibernate-core', configuration: 'javadocSources' )

    testing project( ':hibernate-testing' )
    javadocSources project( path: ':hibernate-testing', configuration: 'javadocSources' )

    envers project( ':hibernate-envers' )
    javadocSources project( path: ':hibernate-envers', configuration: 'javadocSources' )

    spatial project( ':hibernate-spatial' )
    javadocSources project( path: ':hibernate-spatial', configuration: 'javadocSources' )

    agroal project( ':hibernate-agroal' )
    javadocSources project( path: ':hibernate-agroal', configuration: 'javadocSources' )

    c3p0 project( ':hibernate-c3p0' )
    javadocSources project( path: ':hibernate-c3p0', configuration: 'javadocSources' )

    hikaricp project( ':hibernate-hikaricp' )
    javadocSources project( path: ':hibernate-hikaricp', configuration: 'javadocSources' )

    proxool project( ':hibernate-proxool' )
    javadocSources project( path: ':hibernate-proxool', configuration: 'javadocSources' )

    vibur project( ':hibernate-vibur' )
    javadocSources project( path: ':hibernate-vibur', configuration: 'javadocSources' )

    jcache project( ':hibernate-jcache' )
    javadocSources project( path: ':hibernate-jcache', configuration: 'javadocSources' )

    jpamodelgen project( ':hibernate-jpamodelgen' )
    javadocSources project( path: ':hibernate-jpamodelgen', configuration: 'javadocSources' )

    javadocClasspath libs.loggingAnnotations
    javadocClasspath jakartaLibs.validation
    javadocClasspath jakartaLibs.cdi
    javadocClasspath jakartaLibs.jacc
    javadocClasspath jakartaLibs.jsonbApi
    javadocClasspath libs.ant
    javadocClasspath dbLibs.postgresql
    javadocClasspath libs.jackson
    javadocClasspath gradleApi()
    javadocClasspath libs.jacksonXml
    javadocClasspath dbLibs.oracle
}


// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// aggregated JavaDoc
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


final File javadocDir = mkdir( new File( (File) project.buildDir, 'documentation/javadocs' ) );

/**
 * Builds the JavaDocs aggregated (unified) across all the sub-projects
 */
task aggregateJavadocs(type: Javadoc) {
    description = 'Builds an aggregated JavaDoc across all ORM sub-projects'

    final int currentYear = new GregorianCalendar().get( Calendar.YEAR )

    source configurations.javadocSources
    classpath += configurations.javadocClasspath

    // exclude any generated sources and internal packages
    exclude '**/generated-src/**'
    exclude '**/internal/**'
    include '**/*.java'

    // apply standard config
    maxMemory = '512m'
    destinationDir = javadocDir
    configure( options ) {
        overview = 'src/release/javadoc/overview.html'
        windowTitle = 'Hibernate JavaDocs'
        docTitle = "Hibernate JavaDoc ($project.version)"
        bottom = "Copyright &copy; 2001-$currentYear <a href=\"https://redhat.com\">Red Hat, Inc.</a>  All Rights Reserved."
        use = true
        options.encoding = 'UTF-8'

        links = [
                'https://docs.oracle.com/en/java/javase/11/docs/api/',
                'https://docs.jboss.org/hibernate/beanvalidation/spec/2.0/api/',
                'https://docs.jboss.org/cdi/api/2.0/',
                'https://jakarta.ee/specifications/platform/8/apidocs/'
        ]

        options.addStringOption( 'Xdoclint:none', '-quiet' )

        if ( gradle.ext.javaToolchainEnabled ) {
            options.setJFlags( getProperty( 'toolchain.javadoc.jvmargs' ).toString().
                    split( ' ' ).toList().findAll( { !it.isEmpty() } ) )
        }
    }

    if ( gradle.ext.javaToolchainEnabled ) {
        // Display version of Java tools
        doFirst {
            if ( javadocTool.present ) {
                logger.lifecycle "Aggregating javadoc with '${javadocTool.get().metadata.installationPath}'"
            }
        }
    }
}

task stageIntegrationGuide(type: Copy) {
    group 'Release'

    dependsOn ':documentation:renderIntegrationGuide'

    from "${project( ':documentation' ).buildDir}/asciidoc/integrationguide"
    into "${buildDir}/documentation/integrationguide"
}


task stageQuickstart(type: Copy) {
    group 'Release'

    dependsOn ':documentation:renderGettingStartedGuides'

    from "${project( ':documentation' ).buildDir}/asciidoc/quickstart"
    into "${buildDir}/documentation/quickstart"
}


task stageTopicalGuide(type: Copy) {
    group 'Release'

    dependsOn ':documentation:renderTopicalGuides'

    from "${project( ':documentation' ).buildDir}/asciidoc/topical"
    into "${buildDir}/documentation/topical"
}


task stageUserGuide(type: Copy) {
    group 'Release'

    dependsOn ':documentation:renderUserGuide'

    from "${project( ':documentation' ).buildDir}/asciidoc/userguide"
    into "${buildDir}/documentation/userguide"
}


task stageMigrationGuide(type: Copy) {
    group 'Release'

    dependsOn ':documentation:renderMigrationGuide'

    from "${project( ':documentation' ).buildDir}/asciidoc/migration-guide"
    into "${buildDir}/documentation/migration-guide"
}

task stageOrmReports {
    group 'Release'

    dependsOn ':documentation:generateHibernateReports'
}

task stageOrmIncubationReport(type: Copy) { task ->
    group 'Release'

    dependsOn ':documentation:generateIncubationReport'
    tasks.stageOrmReports.dependsOn task

    from project( ":documentation" ).tasks.generateIncubationReport.reportFileReferenceAccess
    into "${buildDir}/documentation/incubating"
}

task stageOrmInternalsReport(type: Copy) { task ->
    group 'Release'

    dependsOn ':documentation:generateInternalsReport'
    tasks.stageOrmReports.dependsOn task

    from project( ":documentation" ).tasks.generateInternalsReport.reportFileReferenceAccess
    into "${buildDir}/documentation/internals"
}

task stageOrmDeprecationReport(type: Copy) { task ->
    group 'Release'

    dependsOn ':documentation:generateDeprecationReport'
    tasks.stageOrmReports.dependsOn task

    from project( ":documentation" ).tasks.generateDeprecationReport.reportFileReferenceAccess
    into "${buildDir}/documentation/deprecated"
}

task stageOrmLoggingReport(type: Copy) { task ->
    group 'Release'

    dependsOn ':documentation:renderLoggingReport'
    tasks.stageOrmReports.dependsOn task

    from project( ":documentation" ).tasks.renderLoggingReport.outputDir
    into "${buildDir}/documentation/logging"
}


/**
 * Assembles all documentation into the {buildDir}/documentation directory.
 *
 * Depends on building the docs
 */
task assembleDocumentation {
    group 'Release'
    description 'Assembles all documentation into the {buildDir}/documentation directory'

    dependsOn ':documentation:buildDocsForPublishing'
    dependsOn tasks.aggregateJavadocs
    dependsOn tasks.stageIntegrationGuide
    dependsOn tasks.stageTopicalGuide
    dependsOn tasks.stageQuickstart
    dependsOn tasks.stageUserGuide
    dependsOn tasks.stageMigrationGuide
    dependsOn tasks.stageOrmReports
}

//task assembleProjectTemplates(type:Copy, dependsOn: project( ":project-template" ).tasks.assembleDist) {
//    def templateProject = project( ":project-template" )
//    from templateProject.layout.buildDirectory.dir( "distributions" )
//    into projectTemplateStagingDir
//}

tasks.uploadDocumentation {
    dependsOn assembleDocumentation

    doFirst {
        if ( rootProject.ormVersion.isSnapshot ) {
            logger.error( "Cannot perform upload of SNAPSHOT documentation" );
            throw new RuntimeException( "Cannot perform upload of SNAPSHOT documentation" );
        }
        else {
            logger.lifecycle( "Uploading documentation ..." )
        }
    }

    doLast {
        logger.lifecycle( 'Done uploading documentation' )
    }
}

task releaseChecks {
    group 'Release'
    description 'Checks and preparation for release'
}

task preVerifyRelease{
    group 'Release'
    description 'Pre-verifies a release job execution (Run locally before a CI release)'

    dependsOn clean
    dependsOn assembleDocumentation
}


task changeLogFile {
    group 'Release'
    description 'Updates the changelog.txt file based on the change-log report from Jira'

    dependsOn project.tasks.releaseChecks

    doFirst {
        logger.lifecycle( "Appending version `${project.releaseVersion}` to changelog..." )
        ChangeLogFile.update( ormVersion.fullName );
    }
}

task changeToReleaseVersion {
    group 'Release'
    description 'Updates `gradle/version.properties` file to the specified release-version'

    dependsOn project.tasks.releaseChecks

    doFirst {
        logger.lifecycle( "Updating version-file to release-version : `${project.releaseVersion}`" )
        updateVersionFile( project.releaseVersion )
    }
}

task gitPreparationForRelease {
    dependsOn changeLogFile
    dependsOn changeToReleaseVersion

    doLast {
        logger.lifecycle( "Performing pre-steps Git commit : `${project.releaseVersion}`" )
        executeGitCommand( 'add', '.' )
        executeGitCommand( 'commit', '-m', "Pre-steps for release : `${project.ormVersion.fullName}`" )
    }
}

task changeToDevelopmentVersion {
    group 'Release'
    description 'Updates `gradle/version.properties` file to the specified development-version'

    dependsOn project.tasks.releaseChecks

    doFirst {
        logger.lifecycle( "Updating version-file to development-version : `${project.developmentVersion}`" )
        updateVersionFile( project.developmentVersion )
    }
}

task gitTasksAfterRelease {
    dependsOn changeToDevelopmentVersion

    doLast {
        logger.lifecycle( "Performing pre-steps Git commit : `${project.releaseVersion}`" )
        executeGitCommand( 'add', '.' )
        executeGitCommand( 'commit', '-m', "Post-steps for release : `${project.ormVersion.fullName}`" )

        if ( project.createTag ) {
            logger.lifecycle("Tagging release : `${project.releaseTag}`...")
            executeGitCommand( 'tag', '-a', project.releaseTag, '-m', "Release $project.ormVersion.fullName" )
        }
    }
}

void updateVersionFile(String version) {
    logger.lifecycle( "Updating `gradle/version.properties` version to `${version}`" )
    project.ormVersionFile.text = "hibernateVersion=${version}"
}

task publishReleaseArtifacts {
    dependsOn releaseChecks
    dependsOn uploadDocumentation

    mustRunAfter gitPreparationForRelease
}

task release {
    group 'Release'
    description 'Performs a release on local check-out, including updating changelog and '

    dependsOn gitPreparationForRelease
    dependsOn publishReleaseArtifacts

    finalizedBy gitTasksAfterRelease
}

task ciReleaseChecks {
    dependsOn releaseChecks
}

task gitTasksAfterCiRelease {
    dependsOn gitTasksAfterRelease

    doLast {
        if ( project.createTag ) {
            logger.lifecycle( "Pushing branch and tag to remote `${project.gitRemote}`..." )
            executeGitCommand( 'push', '--atomic', project.gitRemote , project.gitBranch, project.releaseTag )
        }
        else {
            logger.lifecycle("Pushing branch to remote `${project.gitRemote}`..." )
            executeGitCommand( 'push', project.gitRemote , project.gitBranch )
        }
    }
}

task ciRelease {
    group 'Release'
    description 'Performs a release: the hibernate version is set and the changelog.txt file updated, the changes are pushed to github, then the release is performed, tagged and the hibernate version is set to the development one.'

    dependsOn ciReleaseChecks
    dependsOn release

    finalizedBy gitTasksAfterCiRelease
}

static String executeGitCommand(Object ... subcommand){
    List<Object> command = ['git']
    Collections.addAll( command, subcommand )
    def proc = command.execute()
    def code = proc.waitFor()
    def stdout = inputStreamToString( proc.getInputStream() )
    def stderr = inputStreamToString( proc.getErrorStream() )
    if ( code != 0 ) {
        throw new GradleException( "An error occurred while executing " + command + "\n\nstdout:\n" + stdout + "\n\nstderr:\n" + stderr )
    }
    return stdout
}

static String inputStreamToString(InputStream inputStream) {
    inputStream.withCloseable { ins ->
        new BufferedInputStream(ins).withCloseable { bis ->
            new ByteArrayOutputStream().withCloseable { buf ->
                int result = bis.read();
                while (result != -1) {
                    buf.write((byte) result);
                    result = bis.read();
                }
                return buf.toString( StandardCharsets.UTF_8.name());
            }
        }
    }
}

class ChangeLogFile {

    // Get the Release Notes from Jira and add them to the Hibernate changelog.txt file
    static void update(String releaseVersion) {
        def text = ""
        File changelog = new File( "changelog.txt" )
        def newReleaseNoteBlock = getNewReleaseNoteBlock(releaseVersion)
        changelog.eachLine {
            line ->
                if ( line.startsWith( "Note:" ) ) {
                    text += line + System.lineSeparator() + System.lineSeparator() + newReleaseNoteBlock
                }
                else {
                    text += line + System.lineSeparator()
                }
        }
        changelog.text = text
    }

    // Get the Release Notes from Jira
    static String getNewReleaseNoteBlock(String releaseVersion) {
        def restReleaseVersion;
        if ( releaseVersion.endsWith( ".Final" ) ) {
            restReleaseVersion = releaseVersion.replace( ".Final", "" )
        }
        else {
            restReleaseVersion = releaseVersion
        }
        def apiString = "https://hibernate.atlassian.net/rest/api/2/search/?jql=project=HHH%20AND%20fixVersion=${restReleaseVersion}%20order%20by%20issuetype%20ASC"
        def apiUrl = new URL( apiString )
        def jsonReleaseNotes = new JsonSlurper().parse( apiUrl )
        def releaseDate = new Date().format( 'MMMM dd, YYYY' )
        def versionId = getVersionId( jsonReleaseNotes, restReleaseVersion )

        ReleaseNote releaseNotes = new ReleaseNote( releaseVersion, releaseDate, versionId )

        def issuetype
        jsonReleaseNotes.issues.each {
            issue ->
                if ( issuetype != issue.fields.issuetype.name ) {
                    issuetype = issue.fields.issuetype.name
                    releaseNotes.addEmptyLine();
                    releaseNotes.addLine( "** ${issue.fields.issuetype.name}" )
                }
                releaseNotes.addLine( "    * [" + issue.key + "] - " + issue.fields.summary )
        }
        releaseNotes.addEmptyLine()
        return releaseNotes.notes
    }

    private static getVersionId(jsonReleaseNotes, String restReleaseVersion) {
        def fixVersions = jsonReleaseNotes.issues.get( 0 ).fields.fixVersions

        for ( def fixVersion : fixVersions ) {
            if ( fixVersion.name.equals( restReleaseVersion ) ) {
                return fixVersion.id
            }
        }
        throw new GradleException( "Unable to determine the version id of the current release." )
    }
}

class ReleaseNote {
    String notes;
    String notesHeaderSeparator = "------------------------------------------------------------------------------------------------------------------------"

    ReleaseNote(String releaseVersion, String releaseDate, String versionId) {
        notes = "Changes in ${releaseVersion} (${releaseDate})" + System.lineSeparator()
        addHeaderSeparator()
        addEmptyLine()
        addLine( "https://hibernate.atlassian.net/projects/HHH/versions/${versionId}" )
    }

    void addLine(String text) {
        notes += text + System.lineSeparator()
    }

    void addHeaderSeparator() {
        addLine( notesHeaderSeparator )
    }

    void addEmptyLine() {
        notes += System.lineSeparator()
    }

    void addEmptyLines(int numberOfLines) {
        for ( i in 1..numberOfLines ) {
            notes += System.lineSeparator()
        }
    }
}


gradle.getTaskGraph().whenReady {tg->

    if ( tg.hasTask( project.tasks.releaseChecks )
            && ! project.getGradle().getStartParameter().isDryRun() ) {
        String releaseVersionLocal
        String developmentVersionLocal

        def console = tg.hasTask( project.tasks.ciReleaseChecks )
                ? null
                : System.console()

        if (project.hasProperty('releaseVersion')) {
            releaseVersionLocal = project.property('releaseVersion')
        }
        else {
            if (console) {
                // prompt for `releaseVersion`
                releaseVersionLocal = console.readLine('> Enter the release version: ')
            }
            else {
                throw new GradleException(
                        "`release`-related tasks require the following properties: 'releaseVersion', 'developmentVersion'"
                )
            }
        }

        if (project.hasProperty('developmentVersion')) {
            developmentVersionLocal = project.property('developmentVersion')
        }
        else {
            if (console) {
                // prompt for `developmentVersion`
                developmentVersionLocal = console.readLine('> Enter the next development version: ')
            }
            else {
                throw new GradleException(
                        "`release`-related tasks require the following properties: 'releaseVersion', 'developmentVersion'"
                )
            }
        }

        assert releaseVersionLocal != null && developmentVersionLocal != null;

        // set up information for the release-related tasks
        project.ext {
            releaseVersion = releaseVersionLocal;
            developmentVersion = developmentVersionLocal;
            createTag = !project.hasProperty('noTag')
            releaseTag = project.createTag ? determineReleaseTag(releaseVersionLocal) : ''
        }

        logger.lifecycle("Checking that the working tree is clean...")
        String uncommittedFiles = executeGitCommand('status', '--porcelain')
        if (!uncommittedFiles.isEmpty()) {
            throw new GradleException(
                    "Cannot release because there are uncommitted or untracked files in the working tree.\n" +
                            "Commit or stash your changes first.\n" +
                            "Uncommitted files:\n    " +
                            uncommittedFiles
            );
        }

        if (tg.hasTask(project.tasks.ciReleaseChecks)) {
            String gitBranchLocal
            String gitRemoteLocal

            if (project.hasProperty('gitBranch')) {
                gitBranchLocal = project.property('gitBranch')
            }
            else {
                gitBranchLocal = executeGitCommand( 'branch', '--show-current' )
            }

            if (project.hasProperty('gitRemote')) {
                gitRemoteLocal = project.property('gitRemote')
            }
            else {
                final String remotes = executeGitCommand( 'remote', 'show' )
                final List<String> tokens = remotes.tokenize()
                if ( tokens.size() != 1 ) {
                    throw new GradleException( "Could not determine `gitRemote` property for `ciRelease` tasks." )
                }
                gitRemoteLocal = tokens.get( 0 )
            }

            project.ext {
                gitBranch = gitBranchLocal
                gitRemote = gitRemoteLocal
            }

            logger.lifecycle("Switching to branch '${project.gitBranch}'...")
            executeGitCommand('checkout', project.gitBranch)

            logger.lifecycle("Checking that all commits are pushed...")
            String diffWithUpstream = executeGitCommand('diff', '@{u}')
            if (!diffWithUpstream.isEmpty()) {
                throw new GradleException(
                        "Cannot perform `ciRelease` tasks because there are un-pushed local commits .\n" +
                                "Push your commits first."
                );
            }
        }
    }
}

static String determineReleaseTag(String releaseVersion) {
    return releaseVersion.endsWith( '.Final' )
            ? releaseVersion.replace( ".Final", "" )
            : releaseVersion;
}