#!/bin/bash
# Builds jar files to run jtreg for jsr166 CVS.
#
# Leverages the hard work done by Ubuntu and Maven packagers

set -eux

declare -a MAKE_FLAGS=() DOWNLOADED_MAVEN_JARS=()

die() { printf "%s: $1\n" "$0" "${@:2}" >&2; exit 2; }

def_make_var() {
  typeset -n varref="$1"
  varref="$2"
  MAKE_FLAGS+=("$1=$2")
}

def_make_file() {
  [[ -f "$2" ]] || die "%s: no such file" "$2"
  def_make_var "$@"
}

def_make_dir() {
  [[ -d "$2" ]] || die "%s: no such directory" "$2"
  def_make_var "$@"
}

download_ubuntu() {
  local -r pkg="$1"
  wget -q "http://us.archive.ubuntu.com/ubuntu/pool/universe/${pkg:0:1}/${pkg}"
}

download_maven_jar() {
  local -r groupId="$1" artifactId="$2" version="$3"
  local -r jarfile="${artifactId}-${version}.jar"
  wget -qO"/tmp/$jarfile" \
    "http://search.maven.org/remotecontent?filepath=${groupId}/${artifactId}/${version}/${jarfile}"
  def_make_file "${artifactId^^}_JAR" "/tmp/$jarfile"
  DOWNLOADED_MAVEN_JARS+=("/tmp/$jarfile")
}

main() {
  [[ "$PWD" =~ /lib-src$ ]] || { echo Always run as ./build-jtreg; exit 1; }
  TESTNG_VERSION="6.9.9"
  rm -rf "/tmp/testng-$TESTNG_VERSION"*; mkdir "/tmp/testng-$TESTNG_VERSION"
  def_make_dir TESTNG_HOME "/tmp/testng-$TESTNG_VERSION"

  # Download a mostly unused testng distribution, because jtreg's
  # makefiles want both TESTNG_JAR and TESTNG_HOME.
  # https://github.com/cbeust/testng/releases
  rm -rf "/tmp/${TESTNG_VERSION}.tar.gz" "/tmp/${TESTNG_VERSION}"
  wget -qO"/tmp/testng-${TESTNG_VERSION}.tar.gz" \
    "https://github.com/cbeust/testng/archive/${TESTNG_VERSION}.tar.gz"
  (
    cd /tmp
    tar xzf "/tmp/testng-${TESTNG_VERSION}.tar.gz"
    rm -f "/tmp/testng-${TESTNG_VERSION}.tar.gz"
  )

  download_maven_jar "junit" "junit" "4.10"
  download_maven_jar "org/testng" "testng" "$TESTNG_VERSION"
  download_maven_jar "com/beust" "jcommander" "1.72"

  # TODO: Upgrade to jtharness 5.x
  rm -rf jtharness-4.6; rm -f ./*jtharness*4.6*
  download_ubuntu "jtharness/jtharness_4.6-1.debian.tar.xz"
  download_ubuntu "jtharness/jtharness_4.6-1.dsc"
  download_ubuntu "jtharness/jtharness_4.6.orig.tar.xz"
  download_ubuntu "jtharness/libjtharness-java_4.6-1_all.deb"
  tar xJf "jtharness_4.6.orig.tar.xz"
  def_make_dir JTHARNESS_HOME "$PWD/jtharness-4.6"

  rm -f ./javahelp2*2.0.05*
  download_ubuntu "javahelp2/javahelp2_2.0.05.ds1-9.debian.tar.xz"
  download_ubuntu "javahelp2/javahelp2_2.0.05.ds1-9.dsc"
  download_ubuntu "javahelp2/javahelp2_2.0.05.ds1-9_all.deb"
  download_ubuntu "javahelp2/javahelp2_2.0.05.ds1.orig.tar.gz"


  ## Currently we build jtreg from source, but get its dependencies
  ## from Ubuntu or Maven Central. Below are past approaches.

#   rm -f ./jtreg_4.2-b03*
#   download_ubuntu "jtreg/jtreg_4.2-b03-1~16.04.debian.tar.xz"
#   download_ubuntu "jtreg/jtreg_4.2-b03-1~16.04_all.deb"
#   download_ubuntu "jtreg/jtreg_4.2-b03-1~16.04.dsc"
#   download_ubuntu "jtreg/jtreg_4.2-b03.orig.tar.gz"

#   rm -f ./testng*6.9*
#   download_ubuntu "testng/testng_6.9.5-1.debian.tar.xz"
#   download_ubuntu "testng/testng_6.9.5-1.dsc"
#   download_ubuntu "testng/testng_6.9.5-1_all.deb"
#   download_ubuntu "testng/testng_6.9.5.orig.tar.gz"

#   rm -f ./*jcommander*1.48*
#   download_ubuntu "jcommander/jcommander_1.48-1.debian.tar.xz"
#   download_ubuntu "jcommander/jcommander_1.48-1.dsc"
#   download_ubuntu "jcommander/jcommander_1.48.orig.tar.gz"
#   download_ubuntu "jcommander/libjcommander-java_1.48-1_all.deb"

#   rm -f ./*junit4*
#   download_ubuntu "junit4/junit4_4.12-4ubuntu1.debian.tar.xz"
#   download_ubuntu "junit4/junit4_4.12-4ubuntu1.dsc"
#   download_ubuntu "junit4/junit4_4.12-4ubuntu1_all.deb"
#   download_ubuntu "junit4/junit4_4.12.orig.tar.xz"

  rm -rf ./extract
  mkdir extract
  for deb in *.deb; do dpkg -x $deb extract; done
  EXTRACT="$PWD/extract"
  def_make_file JAVATEST_JAR "$(find $EXTRACT/ -name javatest.jar)"
  def_make_file JAVAHELP_JAR "$(find $EXTRACT/ -name jh.jar)"

  hg_clone_codetools() {
    local -r repo="$1" rev="$2"
    rm -rf "$repo"
    hg clone -r "$rev" "http://hg.openjdk.java.net/code-tools/${repo}"
    rm -rf "${repo}/.hg"
    tar cJf "${repo}.tar.xz" "$repo"
  }

  # asmtools is optional, but let's build it for completeness.
  hg_clone_codetools asmtools 7.0
  rm -rf "asmtools-"*"-build"
  (cd "asmtools/build" && ant build)
  def_make_dir ASMTOOLS_HOME "$PWD/asmtools-"*"-build/release"

  def_make_var BUILD_NUMBER "b12"
  JTREG_REV="jtreg4.2-${BUILD_NUMBER}"
  hg_clone_codetools jtreg "$JTREG_REV"

  def_make_dir JDK17HOME "$HOME/jdk/jdk7"
  def_make_dir JDK18HOME "$HOME/jdk/jdk8"
  def_make_dir JDK19HOME "$HOME/jdk/jdk9"

  def_make_dir ANTHOME "/usr/share/ant"

  make "${MAKE_FLAGS[@]}" -C "jtreg/make" clean images

  cp jtreg/build/images/jtreg/lib/*.jar ../jsr166/lib/.

  # As a side effect, save a general purpose jtreg "distribution".
  rsync -a jtreg/build/images/jtreg/ "${JTREG_REV#jtreg}/"

  # Clean up intermediate artifacts.
  # asmtools creates a bogus index.html
  rm -rf asmtools asmtools-*-build index.html \
    jtreg extract "${DOWNLOADED_MAVEN_JARS[@]}" \
    "$JTHARNESS_HOME" "$TESTNG_HOME"

  exit 0
}

main "$@"