#!/bin/bash
set -e
set -o pipefail

log_title() {
    local code="\033["
    local color="${code}1;34m"
    [ -z "$text" ] && local text="$color$1${code}0m"
    echo -e "\n$text"
}

root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/.."

package_arch="amd64"
package_version=$(jq -r ".version" "${root_dir}/package.json")
package_maintainer=$(jq -r ".author" "${root_dir}/package.json")
package_description=$(jq -r ".description" "${root_dir}/package.json")

deb_dir="${root_dir}/build/bitcore_${package_version}_${package_arch}"

log_title "Making Debian package:\n"
echo -e "  Name: bitcore"
echo -e "  Version: ${package_version}"
echo -e "  Maintainer: ${package_maintainer}"
echo -e "  Description: ${package_description}"
echo -e ""

if [ -e "$deb_dir" ]; then rm -rf "$deb_dir"; fi

escape() {
    sed -e 's/[]\/$*.^|[]/\\&/g' -e 's/&/\\&/g' <<< "$@"
}

replace_vars() {
    declare -r file="$1"
    declare -r target_file="$2"

    sed < "$file" \
        -e "s/{{ deb_package_version }}/$(escape $package_version)/g" \
        -e "s/{{ deb_package_description }}/$(escape $package_description)/g" \
        -e "s/{{ deb_package_maintainer }}/$(escape $package_maintainer)/g" \
        -e "s/{{ deb_package_arch }}/$(escape $package_arch)/g" \
        > "$target_file"
}

log_title "Setting up Debian package:"
mkdir -vp "$deb_dir/DEBIAN" \
      "$deb_dir/etc/bitcore" \
      "$deb_dir/usr/opt/bitcore" \
      "$deb_dir/usr/opt/bitcore/bin" \
      "$deb_dir/usr/bin"

mkdir -vp "$deb_dir/etc/init"
mkdir -vp "$deb_dir/etc/systemd/system"
replace_vars "${root_dir}/scripts/debian/control" "$deb_dir/DEBIAN/control"
replace_vars "${root_dir}/scripts/debian/postinst" "$deb_dir/DEBIAN/postinst"
replace_vars "${root_dir}/scripts/debian/prerm" "$deb_dir/DEBIAN/prerm"
replace_vars "${root_dir}/scripts/debian/bitcore.conf" "$deb_dir/etc/init/bitcore.conf"
replace_vars "${root_dir}/scripts/debian/bitcore.service" "$deb_dir/etc/systemd/system/bitcore.service"
replace_vars "${root_dir}/scripts/debian/bitcore-bitcoind.conf" "$deb_dir/etc/init/bitcore-bitcoind.conf"
replace_vars "${root_dir}/scripts/debian/bitcore-bitcoind.service" "$deb_dir/etc/systemd/system/bitcore-bitcoind.service"
chmod -vR 0755 "$deb_dir/DEBIAN/"

log_title "Copying Bitcore"

app_dir="$deb_dir/usr/opt/bitcore"

cp -v "${root_dir}/bin/bitcored" "${app_dir}/bin/bitcored"
cp -v "${root_dir}/bin/bitcore" "${app_dir}/bin/bitcore"
chmod -vR 0755 "${app_dir}/bin/bitcore" "${app_dir}/bin/bitcored"
cp -v "${root_dir}/package.json" "${app_dir}"
cp -v "${root_dir}/README.md" "${app_dir}"
cp -v "${root_dir}/index.js" "${app_dir}"
pushd "${deb_dir}/usr/bin"
ln -vs "../opt/bitcore/bin/bitcore"
ln -vs "../opt/bitcore/bin/bitcored"
ln -vs "../opt/bitcore/node_modules/.bin/bitcoind" "bitcore-bitcoind"
popd

log_title "Installing Bitcore Modules"
pushd "${app_dir}"
VERIFY_BITCOIN_DOWNLOAD=1 npm install --production
echo "Cleanup Node.js addon binaries before packaging:"
find "${app_dir}" -type f -name '*.node' -print -delete
find "${app_dir}" -type f -name '*.o' -print -delete
echo "Cleanup intermediate files:"
rm -v "${deb_dir}/usr/opt/bitcore/node_modules/bitcore-node/bin/bitcoin-0.12.1-linux64.tar.gz"
npm shrinkwrap --dev
popd

log_title "Building Debian package"
dpkg-deb -Z gzip --verbose --build "$deb_dir"

log_title "Signing Debian package"
dpkg-sig --sign builder "${deb_dir}.deb"

echo -e "Success.\n"