#!/bin/sh

. ../../lib/sh-test-lib
OUTPUT="$(pwd)/output"
RESULT_FILE="${OUTPUT}/result.txt"
VERSION="8"

usage() {
    echo "Usage: $0 [-v <8|9>] [-s <true|false>]" 1>&2
    exit 1
}

while getopts "v:s:" o; do
  case "$o" in
    v) VERSION="${OPTARG}" ;;
    s) SKIP_INSTALL="${OPTARG}" ;;
    *) usage ;;
  esac
done

! check_root && error_msg "You need to be root to run this script."
[ -d "${OUTPUT}" ] && mv "${OUTPUT}" "${OUTPUT}_$(date +%Y%m%d%H%M%S)"
mkdir -p "${OUTPUT}"

if [ "${SKIP_INSTALL}" = "True" ] || [ "${SKIP_INSTALL}" = "true" ]; then
    info_msg "JDK package installation skipped"
else
    dist_name
    case "${dist}" in
      Debian|Ubuntu) pkg="openjdk-${VERSION}-jdk" ;;
      CentOS|Fedora) pkg="java-1.${VERSION}.0-openjdk-devel" ;;
      *) error_msg "Unsupported distribution" ;;
    esac
    install_deps "${pkg}"
    exit_on_fail "jdk${VERSION}-installation"
fi

# Set the specific version as default in case more than one jdk installed.
for link in java javac; do
    path="$(update-alternatives --display "${link}" \
        | egrep "^/usr/lib/jvm/java-(${VERSION}|1.${VERSION}.0)" \
        | awk '{print $1}')"
    update-alternatives --set "${link}" "${path}"
done

java -version 2>&1 | grep "version \"1.${VERSION}"
exit_on_fail "check-java-version"

javac -version 2>&1 | grep "javac 1.${VERSION}"
exit_on_fail "check-javac-version"

cd "${OUTPUT}"
cat > "HelloWorld.java" << EOL
public class HelloWorld {
    public static void main(String[] args) {
        System.out.println("Hello, World");
    }
}
EOL

javac HelloWorld.java
check_return "compile-HelloWorld"

java HelloWorld | grep "Hello, World"
check_return "execute-HelloWorld"