install-ruby.sh

run() {
    # Run the compilation process.
    cd $PLATFORM_CACHE_DIR || exit 1;

    if [ ! -d "${PLATFORM_CACHE_DIR}/.linuxbrew/opt/ruby@$1" ]; then
        echo "Ruby not found in cache, installing"
        install_brew
        install_ruby $1
        copy_lib_to_cache
    else
        copy_lib_from_cache
    fi

    write_profile $1

}

copy_lib_to_cache() {
    echo "Copy to cache..."
    rsync -ahr $PLATFORM_APP_DIR/.linuxbrew $PLATFORM_CACHE_DIR
}

copy_lib_from_cache() {
    echo "Copy from cache..."
    rsync -ahr $PLATFORM_CACHE_DIR/.linuxbrew $PLATFORM_APP_DIR
}

write_profile() {
    touch ~/.environment
    echo "export PATH=\"/app/.linuxbrew/bin:/app/.linuxbrew/opt/ruby@$1/bin:$PATH\"" >> ~/.environment
    echo 'eval $(/app/.linuxbrew/bin/brew shellenv)' >>~/.environment
    ruby_dir=$(ls ~/.linuxbrew/Cellar/ruby@$1)
    echo "export LD_LIBRARY_PATH=/app/.linuxbrew/Cellar/ruby@$1/$ruby_dir/lib/" >> ~/.environment
}

install_brew() {
    echo "Installing homebrew"
    bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
    eval $(/app/.linuxbrew/bin/brew shellenv)
    brew analytics off
}

install_ruby() {
    echo "Installing ruby with command: brew install ruby@$1"
    brew install ruby@"$1"
    rename 's/.reinstall//' /app/.linuxbrew/Cellar/ruby@$1/*.reinstall
}

ensure_environment() {
    # If not running in a Platform.sh build environment, do nothing.
    if [ -z "${PLATFORM_CACHE_DIR}" ]; then
        echo "Not running in a Platform.sh build environment.  Aborting installation."
        exit 0;
    fi
}

ensure_arguments() {
    # If no version was specified, don't try to guess.
    if [ -z $1 ]; then
        echo "No version specified. You must specify a tagged version on the command line."
        exit 1;
    fi
    echo "Version was specified as $1"
}

ensure_environment
ensure_arguments "$1"
run "$1"