#!/usr/bin/env bash

set -eu

CURDIR=$(cd $(dirname ${BASH_SOURCE[0]}); pwd)

VERSION_ID=$(source /etc/os-release; echo ${VERSION_ID%%.*})
OS_NAME=$(source /etc/os-release; echo ${NAME})
OS_NAME=${OS_NAME,,}

case "${OS_NAME}" in
  centos*|red*|almalinux|rocky*)
    RPM_DIST=".el${VERSION_ID}"
    ;;
  fedora)
    RPM_DIST=".fc${VERSION_ID}"
    ;;
  sles)
    RPM_DIST=".sles${VERSION_ID}"
    ;;
  opensuse)
    RPM_DIST=".opensuse${VERSION_ID}"
    ;;
  *)
    RPM_DIST="%{nil}"
    ;;
esac

RPMBUILD=(rpmbuild --define "_topdir ${CURDIR}" --define "dist ${RPM_DIST}")
if [[ ${NODEPS:-0} != 0 ]]; then
  RPMBUILD=("${RPMBUILD[@]}" --nodeps)
fi

SUDO=${SUDO=`if command -v sudo > /dev/null 2>&1; then echo sudo; fi`}
export PATH=${PATH}:/usr/local/bin

set -vx

SPEC=${CURDIR}/SPECS/git-lfs.spec

$SUDO yum install -y rpm-build

mkdir -p ${CURDIR}/{BUILD,BUILDROOT,SOURCES,RPMS,SRPMS}

if ! command -v asciidoctor; then
  echo "Downloading Asciidoctor ruby gem..."
  pushd ${CURDIR}/SOURCES
    curl -L -O https://rubygems.org/downloads/asciidoctor-2.0.17.gem
  popd

  echo "Building Asciidoctor ruby gem..."
  "${RPMBUILD[@]}" -ba ${CURDIR}/SPECS/rubygem-asciidoctor.spec

  echo "Installing Asciidoctor ruby gem..."
  $SUDO yum install -y --nogpgcheck $(ls ${CURDIR}/RPMS/noarch/rubygem-*.rpm | grep -v debuginfo)
fi

rm -fr ${CURDIR}/{BUILD,BUILDROOT}
mkdir -p ${CURDIR}/{BUILD,BUILDROOT}

pushd ${CURDIR}/..
  #Yes, compile lfs before compiling lfs...
  FORCE_LOCALIZE=true make
  #Use the version output to grab the version number and short sha
  #(that yes, I could have gotten from git myself)
  LFS_VERSION=$(./bin/git-lfs version | sed -r 's|.*/([0-9.]*).*|\1|')
  sed -i 's|\(^Version:\s*\).*|\1'"${LFS_VERSION}"'|' ${CURDIR}/SPECS/git-lfs.spec
popd

#Prep the SOURCES dir for git-lfs
echo "Zipping up current checkout of git-lfs..."

echo "Cleaning ${CURDIR}/tmptar"
rm -rf ${CURDIR}/tmptar

mkdir -p ${CURDIR}/tmptar/git-lfs-${LFS_VERSION}
pushd ${CURDIR}/..
  #I started running out of space in the docker, so I needed to copy a little less waste
  tar -c --exclude tmptar --exclude repos . | tar -x -C ${CURDIR}/tmptar/git-lfs-${LFS_VERSION}/
popd
pushd ${CURDIR}/tmptar
  tar -zcf ${CURDIR}/SOURCES/git-lfs-${LFS_VERSION}.tar.gz git-lfs-${LFS_VERSION}
popd

echo "Cleaning ${CURDIR}/tmptar again"
rm -rf ${CURDIR}/tmptar

#TODO TASK 2
#cp ${CURDIR}/../docker/public.key ${CURDIR}/SOURCES/RPM-GPG-KEY-GITLFS
touch ${CURDIR}/SOURCES/RPM-GPG-KEY-GITLFS

echo "Build git-lfs rpm..."

#--no-deps added for now so you can compile without official rpms installed
"${RPMBUILD[@]}" --nodeps -ba ${CURDIR}/SPECS/git-lfs.spec

echo "All Done!"