warp4j/warp4j

#!/usr/bin/env bash

function print_help {
    echo
    echo 'Usage: warp4j [options] <app.jar>'
    echo
    echo 'Turn JAR (java archive) into self-contained executable'
    echo
    echo 'Options:'
    echo '  -j, --java-version   <version>'
    echo '                       override JDK/JRE version'
    echo '                       examples: "11", "11.0", "11.0.2", "11.0.2+9"'
    echo '                       (default: 11)'
    echo '  -cp, --class-path    <classpath>'
    echo '                       adds additional classpaths to the jdeps call'
    echo '  -o, --output         <directory>'
    echo '                       override output directory;'
    echo '                       this is relative to current PWD'
    echo '                       (default: ./warped)'
    echo '  --list               show available java releases;'
    echo '                       takes into consideration other options:'
    echo '                       "--java-version", "--no-optimize", "--jvm-impl";'
    echo '                       the output may be used to specify concrete'
    echo '                       "--java-version"'
    echo '  --no-optimize        use JRE instead of optimized JDK;'
    echo '                       by default jdeps and jlink are used to create'
    echo '                       optimized JDK for the particular jar;'
    echo '                       JRE is always used for java 8'
    echo '  --pull               check if more recent JDK/JRE distro is available;'
    echo '                       by default latest cached version that matches'
    echo '                       "--java-version" is used'
    echo '  --spring-boot        extract from (Spring-Boot) jar the dependencies'
    echo '                       to get the classpath for jdeps call'
    echo '  --linux              create binary for Linux'
    echo '  --macos              create binary for macOS'
    echo '  --windows            create binary for Windows'
    echo '                       if no targets are specified then binaries for'
    echo '                       all targets are created'
    echo '  --jvm-impl           jvm implementation: hotspot or openj9'
    echo '                       (default: hotspot)'
    echo '  --jvm-options        <options>'
    echo '                       passed to java like this:'
    echo '                       "java <options> -jar <jar file>";'
    echo '                       use quotes when passing multiple options'
    echo "                       example: '-Xms512m -Xmx1024m'"
    echo '  -h, --help           show this message'
    exit
}

# exit top level program from subshell
trap "exit 1" TERM
export TOP_PID=$$
function fail() {
    kill -s TERM $TOP_PID
}

# fail with a message
function fail_with() {
    local message=$1
    echo "Error: $message" >&2
    fail
}

# if error code is not zero fail with a message 
function fail_if() {
    local error_code=$1
    local message=$2
    if [[ $error_code != 0 ]]; then
        fail_with "$message"
    fi
}

# common warning
function warn() {
    local message=$1
    echo "Warning: $message" >&2
}

# platform IDs
LIN=linux
MAC=macos
WIN=windows

# returns this platform ID
function get_this_platform() {
    local this_platform="$(uname -s)"
    case $this_platform in
        Linux*) echo $LIN ;;
        Darwin*) echo $MAC ;;
        *)
            fail_with "Unsupported platform $this_platform"
        ;;
    esac
}

# show help if no arguments specified
if [[ $# -eq 0 ]]; then
    print_help
    exit
fi

# parse arguments
POSITIONAL=()
while [[ $# -gt 0 ]]; do
    key="$1"
    case $key in
    -h|--help)
        print_help
        exit
    ;;
    -cp|--class-path)
        CLASS_PATH="$2"
        shift 2
    ;;
    -j|--java-version)
        JAVA_VERSION="$2"
        JAVA_VERSION_OVERRIDEN=true
        shift 2
    ;;
    -o|--output)
        OUTPUT_DIR_PATH="$2"
        shift 2
    ;;
    --list)
        LIST_RELEASES=true
        shift
    ;;
    --no-optimize)
        NO_OPTIMIZE=true
        shift
    ;;
    --pull)
        PULL=true
        shift
    ;;
    --linux)
        TARGETS+=($LIN)
        shift
    ;;
    --macos)
        TARGETS+=($MAC)
        shift
    ;;
    --windows)
        TARGETS+=($WIN)
        shift
    ;;
    --jvm-impl)
        JVM_IMPL="$2"
        shift 2
    ;;
    --jvm-options)
        JVM_OPTIONS="$2"
        shift 2
    ;;
    --spring-boot)
        SPRING_BOOT=true
        shift
    ;;
    -*|--*) # unsupported options
        fail_with "Unsupported option $1"
    ;;
    *)
        POSITIONAL+=("$1") # store positional arguments
        shift
    ;;
    esac
done
set -- "${POSITIONAL[@]}" # restore positional arguments

THIS_PLATFORM=$(get_this_platform)

# checks if all dependencies are available
function check_deps() {
    local deps=( 
        "awk" \
        "curl" \
        "file" \
        "grep" \
        "sed" \
        "sort" \
        "tar" \
        "unzip" \
        "warp-packer" \
    )
    local missing=()
    for d in ${deps[@]}; do
        if ! command -v $d &> /dev/null ; then
            missing+=($d)
        fi
    done
    if [[ $missing ]]; then
        echo -n "Error: Missing dependencies: " >&2
        for d in ${missing[@]}; do
            echo -n "$d " >&2
        done
        echo >&2
        fail
    fi
}

# actually check dependencies
check_deps

# apart from options only one argument is allowed
if [[ $# -gt 1 ]]; then
    fail_with "Too many arguments: $*; expecting only jar name"
else
    JAR=$1
fi

# checks if java version specified correctly
function java_version_is_correct() {
    local pattern="^[0-9]+(\.[0-9]+(\.[0-9]+(\+[0-9]+)?)?)?$"
    local version=$1
    if [[ $version =~ $pattern ]]; then
        return 0
    else
        return 1
    fi
}

# validate java version
if [[ $JAVA_VERSION ]] && ! java_version_is_correct $JAVA_VERSION ; then
    fail_with "JDK version \"$JAVA_VERSION\" is not correct"
fi

JVM_IMPL_HOTSPOT=hotspot
JVM_IMPL_OPENJ9=openj9

# validate jvm implementation
if [[ $JVM_IMPL ]] && 
   [[ $JVM_IMPL != $JVM_IMPL_HOTSPOT ]] &&
   [[ $JVM_IMPL != $JVM_IMPL_OPENJ9 ]]; then
    fail_with "jvm implementation \"$JVM_IMPL\" is not correct"
fi

LATEST_LTS=11 # latest LTS java branch

# default options
test -z $JAVA_VERSION && JAVA_VERSION=$LATEST_LTS
test -z $TARGETS && TARGETS=($LIN $MAC $WIN)
test -z $JVM_IMPL && JVM_IMPL=$JVM_IMPL_HOTSPOT

# returns java branch version
function get_base_version() {
    local version=$1
    echo `echo $version | cut -d"." -f1`
}

# actually set java branch
JAVA_VERSION_BASE=$(get_base_version $JAVA_VERSION)

DISTRO_TYPE_JRE=jre
DISTRO_TYPE_JDK=jdk

# chooses what to use, JDK or JRE
function choose_distro_type() {
    if [[ $JAVA_VERSION_BASE == 8 ]] ||
       [[ $NO_OPTIMIZE ]]; then
        echo $DISTRO_TYPE_JRE
    else
        echo $DISTRO_TYPE_JDK
    fi
}

# actually choose distro type
JAVA_DISTRO_TYPE=$(choose_distro_type)

# generates adoptopenjdk api url
function api_url() {
    local request=$1 # info/binary
    local platform=$2 # windows/linux/macos
    # adoptopenjdk uses "mac" instead of "macos"
    if [[ $platform == "macos" ]]; then
        platform="mac"
    fi
    echo -n "https://api.adoptopenjdk.net/v2/\
$request/releases/openjdk$JAVA_VERSION_BASE?\
openjdk_impl=$JVM_IMPL&\
os=$platform&\
arch=x64&\
type=$JAVA_DISTRO_TYPE"
}

# requests info about all releases for given platform and java branch
function fetch_distro_info() {
    local platform=$1 # platform ID
    local branch=$2 # 8/9/10/11...
    curl -s $(api_url info $platform)
    fail_if $? "Failed to fetch java $branch info"
}

# extracts all concrete java versions that match the version specified by user
# from provided distro info
function find_matched_versions() {
    local info=$1
    local user_version=$2
    # turning something like "11.0.1+13" into regexp like "^11\.0\.1\+13"
    local pattern="^"$(echo $user_version \
        | sed -e 's/\./\\\./g' -e 's/\+/\\\+/g')
    local versions=$(echo "$info" \
        | grep '"semver"' \
        | sort --reverse --version-sort \
        | awk '{print $2}' \
        | sed -e 's/"//g' -e 's/,//')
    for v in ${versions[@]}; do
        if [[ $v =~ $pattern ]]; then
            echo $v
        fi
    done
}

# prints all concrete java versions that match the version specified by user
function list_releases() {
    local info
    local matched
    local printed
    local platform="linux" # just picked any
    info=$(fetch_distro_info $platform $JAVA_VERSION_BASE)
    matched=$(find_matched_versions "$info" $JAVA_VERSION)
    if [[ $matched ]]; then
        echo "Releases that match $JAVA_VERSION:"
        for m in ${matched[@]}; do
            if [[ ${printed[@]} != *"$m"* ]]; then
                echo $m
                printed+=($m)
            fi
        done
    else
        echo "No releases that match $JAVA_VERSION"
    fi
}

# actually show matched releases
if [[ $LIST_RELEASES ]]; then
    list_releases
    exit
fi

JAR_FILE_BASE_NAME=$(basename -- "$JAR") # "my-app.jAr"
JAR_EXTENSION="${JAR_FILE_BASE_NAME##*.}" # "jAr" 
JAR_EXTENSION_LOWERCASE=$(printf "%s" "$JAR_EXTENSION" | tr '[:upper:]' '[:lower:]') # "jar"
JAR_NAME="${JAR_FILE_BASE_NAME%.*}" # "my-app"

APP_NAME=$JAR_NAME # final binary name
LAUNCHER_NAME=$JAR_NAME # launcher name inside bundle

# checking jar file exists
if [[ ! -e $JAR ]]; then
    fail_with "File \"$JAR\" does not exist"
fi

# checking file is actually java archive
if ([[ $(file $JAR) != *"Java"* ]] && # it could be "Java archive data" or "Java Jar file data (zip)"
   [[ $(file $JAR) != *"Zip"*  ]]) || # or "Zip archive data"
   [[ $JAR_EXTENSION_LOWERCASE != "jar" ]]; then
    fail_with "File \"$JAR\" is not a java archive"
fi

# even if this platform is not targeted, we still need
# a JDK for this platform to optimize JDKs for other platforms 
TARGETS_TO_CACHE=${TARGETS[@]}
if [[ $JAVA_DISTRO_TYPE == $DISTRO_TYPE_JDK ]] &&  # if usind JDK (not JRE)
   [[ ${TARGETS[@]} != *"$THIS_PLATFORM"* ]]; then # and this platform is not targeted
    TARGETS_TO_CACHE+=($THIS_PLATFORM)
fi

# choose cache path for this platform
case $THIS_PLATFORM in
    $MAC) CACHE_PATH="$HOME/Library/Application Support/warp4j" ;;
    *)    CACHE_PATH="$HOME/.local/share/warp4j" ;;
esac

# cache path can be overriden with environment variable
if [[ $WARP4J_CACHE ]]; then
    CACHE_PATH=$WARP4J_CACHE
fi

# this is not full path, platform name and full version will be added
JAVA_DOWNLOAD_PATH=$CACHE_PATH/$JAVA_DISTRO_TYPE/$JVM_IMPL
BUNDLES_PATH=$CACHE_PATH/bundle # prepare bundles here

# path for extracted jar (Spring-Boot) files
EXTRACTED_JAR_PATH=$CACHE_PATH/app-jar # prepare bundles here
mkdir -p ${EXTRACTED_JAR_PATH}
trap 'rm -rf ${EXTRACTED_JAR_PATH}' EXIT

DIR="$(pwd -P)" # execution directory path

# final binaries created in WARPED_TEMP_PATH and then moved to WARPED_PATH
WARPED_TEMP_PATH=$CACHE_PATH/out-temp
if [[ -z $OUTPUT_DIR_PATH ]]; then
    WARPED_PATH=$DIR/warped
else
    WARPED_PATH=$OUTPUT_DIR_PATH
fi

BUNDLED_DISTRO_SUBDIR="java" # runtime directory inside a bundle

# prints a launcher for bash
function print_launcher_bash() {
printf "%s" \
'#!/usr/bin/env bash

JAVA_DIST='"$BUNDLED_DISTRO_SUBDIR"'
JAR='"$JAR_NAME"'.jar

DIR="$(cd "$(dirname "$0")" ; pwd -P)"
JAVA=$DIR/$JAVA_DIST/bin/java
JAR_PATH=$DIR/$JAR

exec "$JAVA" '"$JVM_OPTIONS"' -jar "$JAR_PATH" "$@"
' 
}

# prints a launcher for windows cmd
function print_launcher_cmd() {
printf "%s" \
'@ECHO OFF

SETLOCAL

SET "JAVA_DIST='"$BUNDLED_DISTRO_SUBDIR"'"
SET "JAR='"$JAR_NAME"'.jar"

SET "JAVA=%~dp0\%JAVA_DIST%\bin\javaw.exe"
SET "JAR_PATH=%~dp0\%JAR%"

START %JAVA% '"$JVM_OPTIONS"' -jar %JAR_PATH% %*
EXIT /B %ERRORLEVEL%
' 
}

# these files are success markers
MARKER_DOWNLOADED="downloaded" # after runtime download
MARKER_UNPACKED="unpacked" # after runtime uncompress

# returns latest cached version that matches version specified by user
function find_latest_cached() {
    local platform=$1
    local user_version=$2
    local platform_dir=$JAVA_DOWNLOAD_PATH/$platform/
    # turning something like "11.0.1+13" into regexp like "^11\.0\.1\+13"
    local pattern="^"$(echo $user_version \
                     | sed -e 's/\./\\\./g' -e 's/\+/\\\+/g')
    local versions=$(ls -1 "$platform_dir" 2> /dev/null \
                   | sort --reverse --version-sort)
    local version
    for v in ${versions[@]}; do
        if [[ -e $platform_dir/$v/$MARKER_DOWNLOADED ]] &&
           [[ $v =~ $pattern ]]; then
            version=$v
            break
        fi
    done
    if [[ $version ]]; then
        echo $version
    else
        return 1
    fi
}

# finds latest concrete distro version that matches version specified by user
function find_latest_version() {
    local info=$1 # info fetched from AdoptOpenJDK
    local user_version=$2 # version supplied by user is a template
    local matched_version # latest version that matches the template
    local versions # all versions
    versions=$(echo "$info" \
            | grep '"semver"' \
            | sort --reverse --version-sort \
            | awk '{print $2}' \
            | sed -e 's/"//g' -e 's/,//')
    # turning something like "11.0.1+13" into regexp like "^11\.0\.1\+13"
    # remember that user may provide shorter version like "11", "11.0", "11.0.1"
    local pattern="^"$(echo $user_version | sed -e 's/\./\\\./g' -e 's/\+/\\\+/g')
    for v in ${versions[@]}; do
        if [[ $v =~ $pattern ]]; then
            matched_version=$v
            break
        fi
    done
    if [[ -z $matched_version ]]; then
        fail_with "Can't find distro that matches $user_version"
    fi
    echo $matched_version
}

# finds direct link to download concrete runtime version
function find_distro_link() {
    local info=$1 # info fetched from AdoptOpenJDK
    local version=$2 # concrete distro version like "11.0.2+9"
    local link=$(echo "$info" \
        | grep -B13 "\"heap_size\": \"normal\"" \
        | grep -B11 "\"semver\": \"$version\"" \
        | grep "binary_link" \
        | sort --reverse \
        | head -n 1 \
        | awk '{print $2}' \
        | sed -e 's/"//g' -e 's/,//')
    if [[ -z $link ]]; then
        fail_with "Can't find download link for $version"
    fi
    echo "$link"
}

# downloads runtime distro
function download_distro() {
    local platform=$1
    local version=$2
    local link=$3
    local download_dir=$JAVA_DOWNLOAD_PATH/$platform/$version
    echo "Downloading $JVM_IMPL-$JAVA_DISTRO_TYPE-$version-$platform..."
    rm -rf "$download_dir"
    mkdir -p "$download_dir"
    (cd "$download_dir"
        curl --progress-bar --location --remote-name "$link"
        if [[ $? == 0 ]]; then
            touch $MARKER_DOWNLOADED
        else
            fail_with "Failed to download $JVM_IMPL-$JAVA_DISTRO_TYPE-$version-$platform"
        fi
    )
}

# ensures required distro is in cache 
function ensure_distro_cached() {
    local platform=$1
    local distro_info
    local distro_link
    if [[ -z $PULL ]]; then
        if [[ -z $JAVA_VERSION_OVERRIDEN ]]; then
            if [[ ! $(find_latest_cached $platform $LATEST_LTS) ]]; then
                distro_info=$(fetch_distro_info $platform $LATEST_LTS)
                CONCRETE_JAVA_VERSION=$(find_latest_version "$distro_info" $LATEST_LTS)
                distro_link=$(find_distro_link "$distro_info" $CONCRETE_JAVA_VERSION)
                download_distro $platform $CONCRETE_JAVA_VERSION "$distro_link"
            else
                CONCRETE_JAVA_VERSION=$(find_latest_cached $platform $LATEST_LTS)
            fi 
        else
            if [[ ! $(find_latest_cached $platform $JAVA_VERSION) ]]; then
                distro_info=$(fetch_distro_info $platform $JAVA_VERSION_BASE)
                CONCRETE_JAVA_VERSION=$(find_latest_version "$distro_info" $JAVA_VERSION)
                distro_link=$(find_distro_link "$distro_info" $CONCRETE_JAVA_VERSION)
                download_distro $platform $CONCRETE_JAVA_VERSION "$distro_link"
            else
                CONCRETE_JAVA_VERSION=$(find_latest_cached $platform $JAVA_VERSION)
            fi 
        fi
    else
        if [[ -z $JAVA_VERSION ]]; then
            distro_info=$(fetch_distro_info $platform $LATEST_LTS)
            CONCRETE_JAVA_VERSION=$(find_latest_version "$distro_info" $LATEST_LTS)
        else
            distro_info=$(fetch_distro_info $platform $JAVA_VERSION_BASE)
            CONCRETE_JAVA_VERSION=$(find_latest_version "$distro_info" $JAVA_VERSION)
        fi
        if [[ ! $(find_latest_cached $platform $CONCRETE_JAVA_VERSION) ]]; then
            distro_link=$(find_distro_link "$distro_info" $CONCRETE_JAVA_VERSION)
            download_distro $platform $CONCRETE_JAVA_VERSION "$distro_link"
        fi
    fi
}

# actually ensure required distro is in cache
for target in ${TARGETS_TO_CACHE[@]}; do
    ensure_distro_cached $target
done

UNPACKED_SUBDIR="distro"

# ensures required distro uncompressed 
function ensure_distro_unpacked() {
    local platform=$1
    local version=$2
    local download_dir=$JAVA_DOWNLOAD_PATH/$platform/$version
    local unpacked_dir=$download_dir/$UNPACKED_SUBDIR
    if [[ ! -e $download_dir/$MARKER_UNPACKED ]]; then
        echo "Uncompressing $JVM_IMPL-$JAVA_DISTRO_TYPE-$version-$platform"
        # removing all leftover directories
        for d in "$download_dir"/* ; do
            if [[ -d $d ]]; then
                rm -rf "$d"
            fi
        done
        case $platform in
            $LIN)
                mkdir -p "$unpacked_dir"
                tar --strip-components=1 -C "$unpacked_dir" -xzf "$download_dir"/*.tar.gz
            ;;
            $MAC)
                # to uncompess distro for macOS we need to use wildcards
                # to use wildcards with GNU tar (on Linux) '--wildcard' option is required
                # to use wildcards with BSD tar (on macOS) no options required
                # if invoked with '--wildcards' BSD tar with exit with message:
                # "Option --wildcards is not supported"
                local tar_cmd
                if tar --wildcards 2>&1 | grep "not supported" > /dev/null ; then
                    tar_cmd="tar"
                else
                    tar_cmd="tar --wildcards"
                fi
                mkdir -p "$unpacked_dir"
                $tar_cmd --strip-components=3 -C "$unpacked_dir" -xzf "$download_dir"/*.tar.gz \
                    "jdk*/Contents/Home"
            ;;
            $WIN)
                (cd "$download_dir"
                    unzip -oq *.zip && mv jdk* $UNPACKED_SUBDIR
                )
            ;;
        esac
        if [[ $? == 0 ]]; then
            touch "$download_dir/$MARKER_UNPACKED"
            case $platform in
                $WIN) rm "$download_dir"/*.zip    ;;
                *)    rm "$download_dir"/*.tar.gz ;;
            esac
        else
            fail_with "Failed to unpack $JVM_IMPL-$JAVA_DISTRO_TYPE-$version-$platform"
        fi
    fi
}

# actually ensure required distro uncompressed 
for target in ${TARGETS[@]}; do
    ensure_distro_unpacked $target $CONCRETE_JAVA_VERSION
done

JDK_PATH=$JAVA_DOWNLOAD_PATH/$THIS_PLATFORM/$CONCRETE_JAVA_VERSION/$UNPACKED_SUBDIR
JLINK=$JDK_PATH/bin/jlink
JDEPS=$JDK_PATH/bin/jdeps

# modules are only needed if JDK optimisation is performed
if [[ $JAVA_DISTRO_TYPE == $DISTRO_TYPE_JDK ]]; then
    echo "Analyzing dependencies..."
    # TODO check for errors
    # TODO If JAVA_VERSION is not an INT it will throw an error
    if [ -n "$CLASS_PATH" ]
    then
    	echo "Using given classpaths: $CLASS_PATH"
        MODULES=$("$JDEPS" -cp $CLASS_PATH --print-module-deps --ignore-missing-deps --multi-release $JAVA_VERSION_BASE "$JAR" | grep -v Warning)
    elif [ "$SPRING_BOOT" ]
    then
    	echo "Extracting jar file to get classpath"
    	unzip -q "${JAR}" -d "${EXTRACTED_JAR_PATH}"
    	echo "Fetching modules"
        MODULES=$("$JDEPS" -classpath \'${EXTRACTED_JAR_PATH}/BOOT-INF/lib/*:${EXTRACTED_JAR_PATH}/BOOT-INF/classes:${EXTRACTED_JAR_PATH}\' --print-module-deps --ignore-missing-deps --module-path ${EXTRACTED_JAR_PATH}/BOOT-INF/lib/javax.activation-api-1.2.0.jar --recursive --multi-release ${JAVA_VERSION_BASE} -quiet ${EXTRACTED_JAR_PATH}/org ${EXTRACTED_JAR_PATH}/BOOT-INF/classes ${EXTRACTED_JAR_PATH}/BOOT-INF/lib/*.jar | grep -v Warning)
    else
    	echo "Fetch modules with default behavior"
        MODULES=$("$JDEPS" --print-module-deps --ignore-missing-deps --multi-release $JAVA_VERSION_BASE "$JAR" | grep -v Warning)
    fi
fi

# creates minimized runtime for the platform
function create_optimized_runtime() {
    local platform=$1
    local jmods=$JAVA_DOWNLOAD_PATH/$platform/$CONCRETE_JAVA_VERSION/$UNPACKED_SUBDIR/jmods
    echo "Creating minimal runtime for $platform..."
    "$JLINK" \
        --no-header-files \
        --no-man-pages \
        --strip-debug \
        --module-path "$jmods" \
        --add-modules $MODULES \
        --output "$BUNDLES_PATH/$platform/$BUNDLED_DISTRO_SUBDIR"
    fail_if $? "Failed to optimize runtime"
}

# creates warp bundle for the platform
function create_bundle() {
    local platform=$1
    case $JAVA_DISTRO_TYPE in
        $DISTRO_TYPE_JDK)
            create_optimized_runtime $platform
        ;;
        $DISTRO_TYPE_JRE)
            mkdir -p "$BUNDLES_PATH/$platform/$BUNDLED_DISTRO_SUBDIR"
            cp -r "$JAVA_DOWNLOAD_PATH/$platform/$CONCRETE_JAVA_VERSION/$UNPACKED_SUBDIR"/* \
                  "$BUNDLES_PATH/$platform/$BUNDLED_DISTRO_SUBDIR"
        ;;
    esac
    case $platform in
        $WIN) print_launcher_cmd  > "$BUNDLES_PATH/$platform/$LAUNCHER_NAME.cmd" ;;
        *) print_launcher_bash > "$BUNDLES_PATH/$platform/$LAUNCHER_NAME.sh"
            chmod +x "$BUNDLES_PATH/$platform/$LAUNCHER_NAME.sh"
        ;;
    esac
    cp "$JAR" "$BUNDLES_PATH/$platform/"
}

# remove old bundles
rm -rf "$BUNDLES_PATH"
# actually create bundles for all targets
for target in ${TARGETS[@]}; do
    create_bundle $target
done

# creates binaries and archives for all targets
function warp_targets() {
    mkdir -p "$WARPED_PATH"

    if [[ ${TARGETS[*]} == *"$LIN"* ]]; then
        echo "Warping for $LIN..."
        mkdir -p "$WARPED_TEMP_PATH/$LIN"
        warp-packer \
            --arch linux-x64 \
            --input_dir "$BUNDLES_PATH/$LIN" \
            --exec "$LAUNCHER_NAME.sh" \
            --output "$WARPED_TEMP_PATH/$LIN/$APP_NAME" \
            &> /dev/null
        fail_if $? "Failed to warp for $LIN"
        echo "Archiving for $LIN..."
        tar -C "$WARPED_TEMP_PATH/$LIN" -czf "$WARPED_TEMP_PATH/$APP_NAME-$LIN-x64.tar.gz" "$APP_NAME"
        fail_if $? "Failed to make archive for $LIN"
        mv "$WARPED_TEMP_PATH/$LIN/$APP_NAME" "$WARPED_PATH/$APP_NAME-$LIN-x64"
        mv "$WARPED_TEMP_PATH/$APP_NAME-$LIN-x64.tar.gz" "$WARPED_PATH"
        rmdir "$WARPED_TEMP_PATH/$LIN"
    fi

    if [[ ${TARGETS[*]} == *"$MAC"* ]]; then
        echo "Warping for $MAC..."
        mkdir -p "$WARPED_TEMP_PATH/$MAC"
        warp-packer \
            --arch macos-x64 \
            --input_dir "$BUNDLES_PATH/$MAC" \
            --exec "$LAUNCHER_NAME.sh" \
            --output "$WARPED_TEMP_PATH/$MAC/$APP_NAME" \
            &> /dev/null
        fail_if $? "Failed to warp for $MAC"
        echo "Archiving for $MAC..."
        tar -C "$WARPED_TEMP_PATH/$MAC" -czf "$WARPED_TEMP_PATH/$APP_NAME-$MAC-x64.tar.gz" "$APP_NAME"
        fail_if $? "Failed to make archive for $MAC"
        mv "$WARPED_TEMP_PATH/$MAC/$APP_NAME" "$WARPED_PATH/$APP_NAME-$MAC-x64"
        mv "$WARPED_TEMP_PATH/$APP_NAME-$MAC-x64.tar.gz" "$WARPED_PATH"
        rmdir "$WARPED_TEMP_PATH/$MAC"
    fi

    if [[ ${TARGETS[*]} == *"$WIN"* ]]; then
        echo "Warping for $WIN..."
        mkdir -p "$WARPED_TEMP_PATH/$WIN"
        warp-packer \
            --arch windows-x64 \
            --input_dir "$BUNDLES_PATH/$WIN" \
            --exec "$LAUNCHER_NAME.cmd" \
            --output "$WARPED_TEMP_PATH/$WIN/$APP_NAME.exe" \
            &> /dev/null
        fail_if $? "Failed to warp for $WIN"
        if command -v zip &> /dev/null ; then (
            echo "Archiving for $WIN..."
            cd "$WARPED_TEMP_PATH/$WIN"
            zip -r "$WARPED_TEMP_PATH/$APP_NAME-$WIN-x64.zip" "$APP_NAME.exe" &> /dev/null
            fail_if $? "Failed to make archive for $WIN"
            mv "$WARPED_TEMP_PATH/$APP_NAME-$WIN-x64.zip" "$WARPED_PATH"
        ) else
            warn "'zip' not found, will skip creation of archive for windows"
        fi
        mv "$WARPED_TEMP_PATH/$WIN/$APP_NAME.exe" "$WARPED_PATH/$APP_NAME-windows-x64.exe"
        rmdir "$WARPED_TEMP_PATH/$WIN"
    fi
    
    rmdir "$WARPED_TEMP_PATH"
}

# actually create binaries and archives for all targets
warp_targets