#!/bin/bash

# Copyright (C) 2019 Red Hat, Inc.

# Written by Andrew John Hughes <gnu.andrew@redhat.com>.

#

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU Affero General Public License as

# published by the Free Software Foundation, either version 3 of the

# License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU Affero General Public License for more details.

#

# You should have received a copy of the GNU Affero General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

ICEDTEA_USE_VCS=true

ICEDTEA_VERSION=3.15.0

ICEDTEA_URL=https://icedtea.classpath.org/download/source

ICEDTEA_SIGNING_KEY=CFDA0F9B35964222

ICEDTEA_HG_URL=https://icedtea.classpath.org/hg/icedtea11

set -e

RPM_DIR=${PWD}

if [ ! -f ${RPM_DIR}/jconsole.desktop.in ] ; then

    echo "Not in RPM source tree.";

    exit 1;

fi

if test "x${TMPDIR}" = "x"; then

    TMPDIR=/tmp;

fi

WORKDIR=${TMPDIR}/it.sync

echo "Using working directory ${WORKDIR}"

mkdir ${WORKDIR}

pushd ${WORKDIR}

if test "x${WGET}" = "x"; then

    WGET=$(which wget);

    if test "x${WGET}" = "x"; then

	echo "wget not found";

	exit 1;

    fi

fi

if test "x${TAR}" = "x"; then

    TAR=$(which tar)

    if test "x${TAR}" = "x"; then

	echo "tar not found";

	exit 2;

    fi

fi

echo "Dependencies:";

echo -e "\tWGET: ${WGET}";

echo -e "\tTAR: ${TAR}\n";

if test "x${ICEDTEA_USE_VCS}" = "xtrue"; then

    echo "Mode: Using VCS";

    if test "x${GREP}" = "x"; then

	GREP=$(which grep);

	if test "x${GREP}" = "x"; then

	    echo "grep not found";

	    exit 3;

	fi

    fi

    if test "x${CUT}" = "x"; then

	CUT=$(which cut);

	if test "x${CUT}" = "x"; then

	    echo "cut not found";

	    exit 4;

	fi

    fi

    if test "x${TR}" = "x"; then

	TR=$(which tr);

	if test "x${TR}" = "x"; then

	    echo "tr not found";

	    exit 5;

	fi

    fi

    if test "x${HG}" = "x"; then

	HG=$(which hg);

	if test "x${HG}" = "x"; then

	    echo "hg not found";

	    exit 6;

	fi

    fi

    echo "Dependencies:";

    echo -e "\tGREP: ${GREP}";

    echo -e "\tCUT: ${CUT}";

    echo -e "\tTR: ${TR}";

    echo -e "\tHG: ${HG}";

    echo "Checking out repository from VCS...";

    ${HG} clone ${ICEDTEA_HG_URL} icedtea

    echo "Obtaining version from configure.ac...";

    ROOT_VER=$(${GREP} '^AC_INIT' icedtea/configure.ac|${CUT} -d ',' -f 2|${TR} -d '[][:space:]')

    echo "Root version from configure: ${ROOT_VER}";

    VCS_REV=$(${HG} log -R icedtea --template '{node|short}' -r tip)

    echo "VCS revision: ${VCS_REV}";

    ICEDTEA_VERSION="${ROOT_VER}-${VCS_REV}"

    echo "Creating icedtea-${ICEDTEA_VERSION}";

    mkdir icedtea-${ICEDTEA_VERSION}

    echo "Copying required files from checkout to icedtea-${ICEDTEA_VERSION}";

    # Commented out for now as IcedTea 6's jconsole.desktop.in is outdated

    #cp -a icedtea/jconsole.desktop.in ../icedtea-${ICEDTEA_VERSION}

    cp -a ${RPM_DIR}/jconsole.desktop.in icedtea-${ICEDTEA_VERSION}

    cp -a icedtea/tapset icedtea-${ICEDTEA_VERSION}

    rm -rf icedtea

else

    echo "Mode: Using tarball";

    if test "x${ICEDTEA_VERSION}" = "x"; then

	echo "No IcedTea version specified for tarball download.";

	exit 3;

    fi

    if test "x${CHECKSUM}" = "x"; then

	CHECKSUM=$(which sha256sum)

	if test "x${CHECKSUM}" = "x"; then

	    echo "sha256sum not found";

	    exit 4;

	fi

    fi

    if test "x${PGP}" = "x"; then

	PGP=$(which gpg)

	if test "x${PGP}" = "x"; then

	    echo "gpg not found";

	    exit 5;

	fi

    fi

    echo "Dependencies:";

    echo -e "\tCHECKSUM: ${CHECKSUM}";

    echo -e "\tPGP: ${PGP}\n";

    echo "Checking for IcedTea signing key ${ICEDTEA_SIGNING_KEY}...";

    if ! gpg --list-keys ${ICEDTEA_SIGNING_KEY}; then

	echo "IcedTea signing key ${ICEDTEA_SIGNING_KEY} not installed.";

	exit 6;

    fi

    echo "Downloading IcedTea release tarball...";

    ${WGET} -v ${ICEDTEA_URL}/icedtea-${ICEDTEA_VERSION}.tar.xz

    echo "Downloading IcedTea tarball signature...";

    ${WGET} -v ${ICEDTEA_URL}/icedtea-${ICEDTEA_VERSION}.tar.xz.sig

    echo "Downloading IcedTea tarball checksums...";

    ${WGET} -v ${ICEDTEA_URL}/icedtea-${ICEDTEA_VERSION}.sha256

    echo "Verifying checksums...";

    ${CHECKSUM} --check --ignore-missing icedtea-${ICEDTEA_VERSION}.sha256

    echo "Checking signature...";

    ${PGP} --verify icedtea-${ICEDTEA_VERSION}.tar.xz.sig

    echo "Extracting files...";

    ${TAR} xJf icedtea-${ICEDTEA_VERSION}.tar.xz \

       icedtea-${ICEDTEA_VERSION}/tapset \

       icedtea-${ICEDTEA_VERSION}/jconsole.desktop.in

    rm -vf icedtea-${ICEDTEA_VERSION}.tar.xz

    rm -vf icedtea-${ICEDTEA_VERSION}.tar.xz.sig

    rm -vf icedtea-${ICEDTEA_VERSION}.sha256

fi

echo "Replacing desktop files...";

mv -v icedtea-${ICEDTEA_VERSION}/jconsole.desktop.in ${RPM_DIR}

echo "Creating new tapset tarball...";

mv -v icedtea-${ICEDTEA_VERSION} openjdk

${TAR} cJf ${RPM_DIR}/tapsets-icedtea-${ICEDTEA_VERSION}.tar.xz openjdk

rm -rvf openjdk

popd

rm -rf ${WORKDIR}