#!/bin/bash -eu

SRC=$(readlink -f "${1:?Usage: $0 source destination}")

DEST=$(readlink -f "${2:?Usage: $0 source destination}")

if [ -f "$DEST" ]; then

    echo "File $DEST exists already."

    exit 0

fi

if [ "$#" -gt 2 ]; then

    PATCHES=$(readlink -f "${@:3}")

else

    PATCHES=""

fi

pushd "$(mktemp -d)"

echo Extracting sources...

tar xfz "$SRC"

cd grafana-pcp-*

echo Applying patches...

for patch in $PATCHES

do

    patch -p1 < $patch

done

echo Installing dependencies...

yarn install

echo Removing files with licensing issues...

rm -rf node_modules/node-notifier

echo Compressing...

XZ_OPT=-9 tar cJf "$DEST" node_modules

popd