/* Convention for properties.  Read from gradle.properties, use lower_case_underlines for property names.
 * For properties set within build.gradle, use camelCaseNoSpace.
 */
import org.apache.tools.ant.filters.ReplaceTokens




plugins {
  id 'java'
}



// in ext the values are cast to Object. Ensure string values are cast as String (and not GStringImpl) for later use
def string(Object o) {
  return o == null ? "" : o.toString()
}


ext {
  jalviewDirAbsolutePath = file(jalviewDir).getAbsolutePath()
  jalviewDirRelativePath = jalviewDir


  ////  
  // Import releaseProps from the RELEASE file
  // or a file specified via JALVIEW_RELEASE_FILE if defined
  // Expect jalview.version and target release branch in jalview.release        
  def releaseProps = new Properties();
  def releasePropFile = findProperty("JALVIEW_RELEASE_FILE");
  def defaultReleasePropFile = "${jalviewDirAbsolutePath}/RELEASE";
  try {
    (new File(releasePropFile!=null ? releasePropFile : defaultReleasePropFile)).withInputStream { 
     releaseProps.load(it)
    }
  } catch (Exception fileLoadError) {
    throw new Error("Couldn't load release properties file "+(releasePropFile==null ? defaultReleasePropFile : "from custom location: releasePropFile"),fileLoadError);
  }
  ////
  // Set JALVIEW_VERSION if it is not already set
  if (findProperty("JALVIEW_VERSION")==null || "".equals(JALVIEW_VERSION)) {
    JALVIEW_VERSION = releaseProps.get("jalview.version")
  }
  

  // essentials
  bareSourceDir = string(source_dir)
  sourceDir = string("${jalviewDir}/${bareSourceDir}")
  resourceDir = string("${jalviewDir}/${resource_dir}")
  bareTestSourceDir = string(test_source_dir)
  testDir = string("${jalviewDir}/${bareTestSourceDir}")

  classesDir = string("${jalviewDir}/${classes_dir}")


  resourceClassesDir = classesDir

  testSourceDir = testDir
  testClassesDir = "${jalviewDir}/${test_output_dir}"

  buildProperties = string("${classesDir}/${build_properties_file}")
  gitHash = string("")
  gitBranch = string("")

  println("Using a ${CHANNEL} profile.")

  additional_compiler_args = []
  // configure classpath/args for j8/j11 compilation
  if (JAVA_VERSION.equals("1.8")) {
    JAVA_INTEGER_VERSION = string("8")
    //libDir = j8libDir
    libDir = j11libDir
    libDistDir = j8libDir
    compile_source_compatibility = 1.8
    compile_target_compatibility = 1.8
  } else if (JAVA_VERSION.equals("11")) {
    JAVA_INTEGER_VERSION = string("11")
    libDir = j11libDir
    libDistDir = j11libDir
    compile_source_compatibility = 11
    compile_target_compatibility = 11
  } else if (JAVA_VERSION.equals("12") || JAVA_VERSION.equals("13")) {
    JAVA_INTEGER_VERSION = JAVA_VERSION
    libDir = j11libDir
    libDistDir = j11libDir
    compile_source_compatibility = JAVA_VERSION
    compile_target_compatibility = JAVA_VERSION
  } else {
    throw new GradleException("JAVA_VERSION=${JAVA_VERSION} not currently supported by Jalview")
  }




  buildingHTML = string("${jalviewDir}/${doc_dir}/building.html")
  helpFile = string("${resourceClassesDir}/${help_dir}/help.jhm")
  helpParentDir = string("${jalviewDir}/${help_parent_dir}")
  helpSourceDir = string("${helpParentDir}/${help_dir}")


  // ENDEXT
}


sourceSets {
  main {
    java {
      srcDirs sourceDir
      outputDir = file(classesDir)
    }

    resources {
      srcDirs resourceDir
      srcDirs += helpParentDir
    }

    jar.destinationDir = file("${jalviewDir}/${package_dir}")

    compileClasspath = files(sourceSets.main.java.outputDir)
    compileClasspath += fileTree(dir: "${jalviewDir}/${libDir}", include: ["*.jar"])

    runtimeClasspath = compileClasspath
  }

  test {
    java {
      srcDirs testSourceDir
      outputDir = file(testClassesDir)
    }

    resources {
      srcDirs = sourceSets.main.resources.srcDirs
    }

    compileClasspath = files( sourceSets.test.java.outputDir )
    compileClasspath += sourceSets.main.compileClasspath
    compileClasspath += fileTree(dir: "${jalviewDir}/${utils_dir}/testnglibs", include: ["**/*.jar"])

    runtimeClasspath = compileClasspath
  }

}




compileJava {

  doFirst {
    sourceCompatibility = compile_source_compatibility
    targetCompatibility = compile_target_compatibility
    options.compilerArgs = additional_compiler_args
    print ("Setting target compatibility to "+targetCompatibility+"\n")
  }

}


compileTestJava {
  doFirst {
    sourceCompatibility = compile_source_compatibility
    targetCompatibility = compile_target_compatibility
    options.compilerArgs = additional_compiler_args
    print ("Setting target compatibility to "+targetCompatibility+"\n")
  }
}


clean {
  doFirst {
    delete sourceSets.main.java.outputDir
  }
}


cleanTest {
  doFirst {
    delete sourceSets.test.java.outputDir
  }
}


// format is a string like date.format("dd MMMM yyyy")
def getDate(format) {
  def date = new Date()
  return date.format(format)
}


task setGitVals {
  def hashStdOut = new ByteArrayOutputStream()
  exec {
    commandLine "git", "rev-parse", "--short", "HEAD"
    standardOutput = hashStdOut
    ignoreExitValue true
  }

  def branchStdOut = new ByteArrayOutputStream()
  exec {
    commandLine "git", "rev-parse", "--abbrev-ref", "HEAD"
    standardOutput = branchStdOut
    ignoreExitValue true
  }

  gitHash = hashStdOut.toString().trim()
  gitBranch = branchStdOut.toString().trim()

  outputs.upToDateWhen { false }
}


task createBuildProperties(type: WriteProperties) {
  dependsOn setGitVals
  inputs.dir(sourceDir)
  inputs.dir(resourceDir)
  file(buildProperties).getParentFile().mkdirs()
  outputFile (buildProperties)
  // taking time specific comment out to allow better incremental builds
  comment "--Jalview Build Details--\n"+getDate("yyyy-MM-dd HH:mm:ss")
  //comment "--Jalview Build Details--\n"+getDate("yyyy-MM-dd")
  property "BUILD_DATE", getDate("HH:mm:ss dd MMMM yyyy")
  property "VERSION", JALVIEW_VERSION
  property "INSTALLATION", INSTALLATION+" git-commit:"+gitHash+" ["+gitBranch+"]"
  outputs.file(outputFile)
}


task cleanBuildingHTML(type: Delete) {
  doFirst {
    delete buildingHTML
  }
}


task convertBuildingMD(type: Exec) {
  dependsOn cleanBuildingHTML
  def buildingMD = "${jalviewDir}/${doc_dir}/building.md"
  def css = "${jalviewDir}/${doc_dir}/github.css"

  def pandoc = null
  pandoc_exec.split(",").each {
    if (file(it.trim()).exists()) {
      pandoc = it.trim()
      return true
    }
  }

  def hostname = "hostname".execute().text.trim()
  def buildtoolsPandoc = System.getProperty("user.home")+"/buildtools/pandoc/bin/pandoc"
  if ((pandoc == null || ! file(pandoc).exists()) && file(buildtoolsPandoc).exists()) {
    pandoc = System.getProperty("user.home")+"/buildtools/pandoc/bin/pandoc"
  }

  doFirst {
    if (pandoc != null && file(pandoc).exists()) {
        commandLine pandoc, '-s', '-o', buildingHTML, '--metadata', 'pagetitle="Building Jalview from Source"', '--toc', '-H', css, buildingMD
    } else {
        println("Cannot find pandoc. Skipping convert building.md to HTML")
        throw new StopExecutionException("Cannot find pandoc. Skipping convert building.md to HTML")
    }
  }

  ignoreExitValue true

  inputs.file(buildingMD)
  inputs.file(css)
  outputs.file(buildingHTML)
}


clean {
  doFirst {
    delete buildingHTML
  }
}


task syncDocs(type: Sync) {
  dependsOn convertBuildingMD
  def syncDir = "${resourceClassesDir}/${doc_dir}"
  from fileTree("${jalviewDir}/${doc_dir}")
  into syncDir

}


task copyHelp(type: Copy) {
  def inputDir = helpSourceDir
  def outputDir = "${resourceClassesDir}/${help_dir}"
  from(inputDir) {
    exclude '**/*.gif'
    exclude '**/*.jpg'
    exclude '**/*.png'
    filter(ReplaceTokens,
      beginToken: '$$',
      endToken: '$$',
      tokens: [
        'Version-Rel': JALVIEW_VERSION,
        'Year-Rel': getDate("yyyy")
      ]
    )
  }
  from(inputDir) {
    include '**/*.gif'
    include '**/*.jpg'
    include '**/*.png'
  }
  into outputDir

  inputs.dir(inputDir)
  outputs.files(helpFile)
  outputs.dir(outputDir)
}


task syncResources(type: Sync) {
  from resourceDir
  include "**/*.*"
  into "${resourceClassesDir}"
  preserve {
    include "**"
  }
}


task prepare {
  dependsOn syncResources
  dependsOn syncDocs
  dependsOn copyHelp
}


//testReportDirName = "test-reports" // note that test workingDir will be $jalviewDir
test {
  dependsOn prepare
  //dependsOn compileJava ////? DELETE

  dependsOn compileJava //?

  useTestNG() {
    includeGroups testng_groups
    excludeGroups testng_excluded_groups
    preserveOrder true
    useDefaultListeners=true
  }

  maxHeapSize = "1024m"

  workingDir = jalviewDir
  //systemProperties 'clover.jar' System.properties.clover.jar
  def testLaf = project.findProperty("test_laf")
  if (testLaf != null) {
    println("Setting Test LaF to '${testLaf}'")
    systemProperty "laf", testLaf
  }
  def testHiDPIScale = project.findProperty("test_HiDPIScale")
  if (testHiDPIScale != null) {
    println("Setting Test HiDPI Scale to '${testHiDPIScale}'")
    systemProperty "sun.java2d.uiScale", testHiDPIScale
  }
  sourceCompatibility = compile_source_compatibility
  targetCompatibility = compile_target_compatibility
  jvmArgs += additional_compiler_args

  doFirst {
  }
}


task buildIndices(type: JavaExec) {
  dependsOn copyHelp
  classpath = sourceSets.main.compileClasspath
  main = "com.sun.java.help.search.Indexer"
  workingDir = "${classesDir}/${help_dir}"
  def argDir = "html"
  args = [ argDir ]
  inputs.dir("${workingDir}/${argDir}")

  outputs.dir("${classesDir}/doc")
  outputs.dir("${classesDir}/help")
  outputs.file("${workingDir}/JavaHelpSearch/DOCS")
  outputs.file("${workingDir}/JavaHelpSearch/DOCS.TAB")
  outputs.file("${workingDir}/JavaHelpSearch/OFFSETS")
  outputs.file("${workingDir}/JavaHelpSearch/POSITIONS")
  outputs.file("${workingDir}/JavaHelpSearch/SCHEMA")
  outputs.file("${workingDir}/JavaHelpSearch/TMAP")
}


task compileLinkCheck(type: JavaCompile) {
  options.fork = true
  classpath = files("${jalviewDir}/${utils_dir}")
  destinationDir = file("${jalviewDir}/${utils_dir}")
  source = fileTree(dir: "${jalviewDir}/${utils_dir}", include: ["HelpLinksChecker.java", "BufferedLineReader.java"])

  inputs.file("${jalviewDir}/${utils_dir}/HelpLinksChecker.java")
  inputs.file("${jalviewDir}/${utils_dir}/HelpLinksChecker.java")
  outputs.file("${jalviewDir}/${utils_dir}/HelpLinksChecker.class")
  outputs.file("${jalviewDir}/${utils_dir}/BufferedLineReader.class")
}


task linkCheck(type: JavaExec) {
  dependsOn prepare, compileLinkCheck

  def helpLinksCheckerOutFile = file("${jalviewDir}/${utils_dir}/HelpLinksChecker.out")
  classpath = files("${jalviewDir}/${utils_dir}")
  main = "HelpLinksChecker"
  workingDir = jalviewDir
  args = [ "${classesDir}/${help_dir}", "-nointernet" ]

  def outFOS = new FileOutputStream(helpLinksCheckerOutFile, false) // false == don't append
  def errFOS = outFOS
  standardOutput = new org.apache.tools.ant.util.TeeOutputStream(
    outFOS,
    standardOutput)
  errorOutput = new org.apache.tools.ant.util.TeeOutputStream(
    outFOS,
    errorOutput)

  inputs.dir("${classesDir}/${help_dir}")
  outputs.file(helpLinksCheckerOutFile)
}

// import the pubhtmlhelp target
ant.properties.basedir = "${jalviewDir}"
ant.properties.helpBuildDir = "${jalviewDirAbsolutePath}/${classes_dir}/${help_dir}"
ant.importBuild "${utils_dir}/publishHelp.xml"


task cleanPackageDir(type: Delete) {
  doFirst {
    delete fileTree(dir: "${jalviewDir}/${package_dir}", include: "*.jar")
  }
}

jar {
  dependsOn linkCheck
  dependsOn buildIndices
  dependsOn createBuildProperties

  manifest {
    attributes "Main-Class": main_class,
    "Permissions": "all-permissions",
    "Application-Name": "Jalview Desktop",
    "Codebase": application_codebase
  }

  destinationDir = file("${jalviewDir}/${package_dir}")
  archiveName = rootProject.name+".jar"

  exclude "cache*/**"
  exclude "*.jar"
  exclude "*.jar.*"
  exclude "**/*.jar"
  exclude "**/*.jar.*"

  inputs.dir(classesDir)
  outputs.file("${jalviewDir}/${package_dir}/${archiveName}")
}