install

#! /bin/bash

self="${0}"
usage() {
    echo "Usage: ${self} [--help | --package | (--build|--clean) [PATH]]"
    echo "    --help      Show this message."
    echo "    --clean     Discard all build results and intermediate files."
    echo "    --build     Install components to ./build (default)"
    echo "    --package   Create a complete grouperfish tarball."
    echo "                Cleans and rebuilds every component first."
    echo
    echo "    PATH        The component to build. Examples:"
    echo "                  ./service"
    echo "                  ./transforms/coclustering"
    echo "                If omitted, everything is built."
    echo
    echo "This script must be called from the root directory of the project."
    echo
}

cmd="--build"
all="YES"
what="project docs service transforms/* tools/* filters/* integration-test"

if [[ "${#}" -gt "2" ]]; then
    usage
    exit 1
fi

if [[ "${#}" -eq "2" ]]; then
    cmd=$1
    all="NO"
    what=$2
fi

if [[ "${#}" -eq "1" ]]; then
    if [[ "${1}" == -* ]]; then
        cmd=$1
    else
        all="NO"
        what=$1
    fi
fi

fail() {
    echo "Build aborted: ${1}"
    exit 1
}

clean() {
    what=$1
    for component in $what; do
        if [[ -x "$component/install" ]]; then
            echo $'\n\n'"Cleaning $component ..."
            ( cd "${component}"
              ./install --clean || fail "Clean of '${component}' failed." )
        fi
        rm -rf "./build/${component}"
    done
    if [[ "YES" = "${all}" ]]; then
        rm -rf ./build
        version="$(cat ./project/VERSION)"
        rm -f "./grouperfish-${version}.tar.gz"
        cd ./project && mvn clean ; cd ..
    fi
}

build() {
    # either --build or --release
    mode=$1
    what=$2
    if [[ "YES" = "${all}" ]]; then
        cd ./project && mvn install ; cd ..
    fi
    for component in $what; do
        if [[ -x "$component/install" ]]; then
            echo $'\n\n'"Installing $component ..."
            ( cd "${component}"
              ./install $mode || fail "Installation of '${component}' failed." )
        else
            echo "Copying $component ..."
            mkdir -p "build/${component}/"
            cp -r "${component}"/* "build/${component}/"
        fi
    done
}

package() {
    what=$1
    version="$(cat ./project/VERSION)"
    clean "${what}"
    build --package "${what}"
    mv ./build "./grouperfish-${version}"
    tar czf "grouperfish-${version}.tar.gz" "./grouperfish-${version}"
}

case "${cmd}" in
    --help)
        usage
        ;;
    --build)
        build --build "${what}"
        ;;
    --clean)
        clean "${what}"
        ;;
    --package)
        package "${what}"
        ;;
    *)
        usage
        exit 1
        ;;
esac