#!/bin/sh

# Java Installer for OpenJDK 21.0.10

COMMAND=${1:-get}        # get | install
TYPE=${2:-jdk}           # jre | jdk
ARCH=${3:-`uname -m`}    # x86_64 | i686 | aarch64 | armv7l | etc
OS=${4:-`uname -s`}      # Linux | Darwin | Windows | etc

case "$OS $ARCH $TYPE" in
	"Linux x86_64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_x64_linux_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="ea3b9bd464d6dd253e9a7accf59f7ccd2a36e4aa69640b7251e3370caef896a4"
	;;
	"Linux aarch64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_aarch64_linux_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="357fee29fb0d5c079f6730db98b28942df13a6eed426f6c61cd4ad703ab27b9a"
	;;
	"Linux ppc64le jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_ppc64le_linux_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="33bdaec351f40cc70d44e251a54c23e4dd15fed8adc041e35c57461c706cf948"
	;;
	"Linux riscv64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_riscv64_linux_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="a57fd486c3c24ed615eb91ef9421ddd38c720e7398df5a161872fb26ad825936"
	;;
	"Darwin x86_64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_x64_mac_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="7484d5d4cdb02fc17a842ab86ddac2524a0365066659c46b2e258c64152379cd"
	;;
	"Darwin arm64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_aarch64_mac_hotspot_21.0.10_7.tar.gz"
		JDK_SHA256="01ca390455216ca27bdddf8cfad51aaedb4f90e1e23aad9bfd9e90caaa2c5f1b"
	;;
	"Windows x86_64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_x64_windows_hotspot_21.0.10_7.zip"
		JDK_SHA256="08cae782814f027f8b159d6b68823f0f87422eb475c1a0ea1abc7a4357aaf11f"
	;;
	"Windows aarch64 jdk")
		JDK_URL="https://github.com/adoptium/temurin21-binaries/releases/download/jdk-21.0.10%2B7/OpenJDK21U-jdk_aarch64_windows_hotspot_21.0.10_7.zip"
		JDK_SHA256="0e1f016cd74c05ab4fe2b2a839f6439e3dc516c9bb201bfb75d12b3fb2a63334"
	;;

	"Linux x86_64 jfx")
		JDK_URL="https://download2.gluonhq.com/openjfx/21.0.10/openjfx-21.0.10_linux-x64_bin-jmods.zip"
		JDK_SHA256="4f75b172da0512b7d561124830fa40dafd9421f4a36a70551a42a43729444bb1"
	;;
	"Darwin x86_64 jfx")
		JDK_URL="https://download2.gluonhq.com/openjfx/21.0.10/openjfx-21.0.10_osx-x64_bin-jmods.zip"
		JDK_SHA256="ce717216a584e4d7cadc8f97fdf845029ece159fe9a652ff8c303ce42c476e3b"
	;;
	"Darwin arm64 jfx")
		JDK_URL="https://download2.gluonhq.com/openjfx/21.0.10/openjfx-21.0.10_osx-aarch64_bin-jmods.zip"
		JDK_SHA256="5e1d388a3676106c53a099e4909ea3e32796738674740eb4b7f0065de6405e03"
	;;
	"Windows x86_64 jfx")
		JDK_URL="https://download2.gluonhq.com/openjfx/21.0.10/openjfx-21.0.10_windows-x64_bin-jmods.zip"
		JDK_SHA256="d118241b342d47bf50ef959dff1a89490783115579877da92c24edd178c4d273"
	;;

	"Linux armv7l jdk")
		JDK_URL="https://download.bell-sw.com/java/21.0.10+10/bellsoft-jdk21.0.10+10-linux-arm32-vfp-hflt.tar.gz"
		JDK_SHA256="e3ed2d5aa469b4eb2f0ada0bbbad294152fb609929c25203904b49405ea7096a"
	;;
	"Linux i686 jdk")
		JDK_URL="https://download.bell-sw.com/java/21.0.10+10/bellsoft-jdk21.0.10+10-linux-i586.tar.gz"
		JDK_SHA256="73505e53a4ebd382ee77b501956e4730614fa1d29c55ebb9c7e5068c3ac97c52"
	;;
	"Windows x86 jdk")
		JDK_URL="https://download.bell-sw.com/java/21.0.10+10/bellsoft-jdk21.0.10+10-windows-i586.zip"
		JDK_SHA256="424439c5942e1ebf5ae0d3aeb6f7a97ec54c4d7eacc6278a30b707c917ab3a54"
	;;

	*)
		echo "Architecture not supported: $OS $ARCH $TYPE"
		exit 1
	;;
esac


# fetch JDK
JDK_TAR_GZ=${5:-`basename $JDK_URL`}

if [ ! -f "$JDK_TAR_GZ" ]; then
	echo "Download $JDK_URL"
	curl --output "$JDK_TAR_GZ" --insecure --location --retry 5 "$JDK_URL"
fi


# verify archive via SHA-256 checksum
JDK_SHA256_ACTUAL=`openssl dgst -sha256 -hex "$JDK_TAR_GZ" | awk '{print $NF}'`
echo "Expected SHA256 checksum: $JDK_SHA256"
echo "Actual SHA256 checksum: $JDK_SHA256_ACTUAL"

if [ "$JDK_SHA256" != "$JDK_SHA256_ACTUAL" ]; then
	echo "ERROR: SHA256 checksum mismatch"
	rm -vf "$JDK_TAR_GZ"
	exit 1
fi


# extract and link only if explicitly requested
if [ "$COMMAND" != "install" ]; then
	echo "Download complete: $JDK_TAR_GZ"
	exit 0
fi


echo "Extract $JDK_TAR_GZ"
tar -v -zxf "$JDK_TAR_GZ"

# find java executable
JAVA_EXE=`find "$PWD" -name "java" -type f | head -n 1`

# link executable into /usr/local/bin/java
mkdir -p "/usr/local/bin"
ln -s -f "$JAVA_EXE" "/usr/local/bin/java"

# link java home to /usr/local/java
JAVA_BIN=`dirname $JAVA_EXE`
JAVA_HOME=`dirname $JAVA_BIN`
ln -s -f "$JAVA_HOME" "/usr/local/java"

# test
echo "Execute $JAVA_EXE -XshowSettings -version"
"$JAVA_EXE" -XshowSettings -version