#!/usr/bin/env sh

set -o errexit
set -o pipefail
set -o nounset

source ${CI_PROJECT_DIR}/ci/stack_env.sh

mkdir -p ${STACK_LOCATION}
cd ${STACK_LOCATION}

echo "Setting up spack"
if [ ! -d spack/.git ]; then
  git clone https://github.com/spack/spack.git
else
  git -C spack fetch
#  git -C spack pull
fi
git -C spack checkout $SPACK_VERSION


echo "Adding spack system config file"

if [ ! -e ${SPACK_SYSTEM_CONFIG_PATH}/spack.yaml ]
then
  spack/bin/spack env create ${environment}
fi

for file in mirrors.yaml packages.yaml concretizer.yaml config.yaml spack.yaml packages_stack.yaml
do
  if [ -e "${STACK_CONFIG_PATH}/${file}" ]; then
    echo "Copying ${STACK_CONFIG_PATH}/${file} to ${SPACK_SYSTEM_CONFIG_PATH}"
    cp "${STACK_CONFIG_PATH}/${file}" ${SPACK_SYSTEM_CONFIG_PATH}
  fi
done

cp -r "${STACK_CONFIG_PATH}/templates" ${SPACK_SYSTEM_CONFIG_PATH}

if [ ! -e ${SPACK_SYSTEM_CONFIG_PATH}/config.yaml ]
then
  echo "config:" >> ${SPACK_SYSTEM_CONFIG_PATH}/config.yaml
fi

cat <<EOF >> ${SPACK_SYSTEM_CONFIG_PATH}/config.yaml
  template_dirs:
    - ${SPACK_SYSTEM_CONFIG_PATH}/templates

  build_stage:
    - \$tempdir/$user/spack-stage
EOF

echo "Setting up extra repos"

EXTERNAL_REPOS=$(jq -r '.spack.repos | keys[]' ${STACK_CONFIG})
spack_external_repos="${SPACK_SYSTEM_CONFIG_PATH}/external_repos"
mkdir -p ${spack_external_repos}

echo "repos:" > ${SPACK_SYSTEM_CONFIG_PATH}/repos.yaml

for repo in ${EXTERNAL_REPOS}
do
  repo_branch=$(jq -r ".spack.repos.\"${repo}\".branch" ${STACK_CONFIG})

  echo " - ${spack_external_repos}/${repo}"
  echo " - ${STACK_LOCATION}/${spack_external_repos}/${repo}" >> ${SPACK_SYSTEM_CONFIG_PATH}/repos.yaml
  if [ ! -d ${spack_external_repos}/${repo} ]; then
    echo "Cloning repo: ${repo}"
    url_branch=$(jq -r ".spack.repos.\"${repo}\".url" ${STACK_CONFIG})
    git clone -b ${repo_branch} ${url_branch} ${spack_external_repos}/${repo}

  else
    echo "Update repo: ${repo}"
    git -C ${spack_external_repos}/$repo fetch
    git -C ${spack_external_repos}/$repo checkout ${repo_branch}
    git -C ${spack_external_repos}/$repo pull
  fi
done

echo "Setting up buildcache"

spack/bin/spack gpg trust \
    $GPG_PRIVATE_KEY

if [ ! -d /buildcache/build_cache ]; then
  spack/bin/spack gpg publish \
      -d /buildcache
fi

if ! spack/bin/spack mirror list | grep buildcache; then
  echo "Add buildcache in mirrors"
  spack/bin/spack mirror add \
      --type binary \
      --scope system \
      buildcache file:///buildcache
fi

spack/bin/spack buildcache keys \
    --install \
    --trust

#spack/bin/spack buildcache update-index /buildcache

cp ${STACK_CONFIG_PATH}/packages_${environment}.yaml ${SPACK_SYSTEM_CONFIG_PATH}/packages_env.yaml

echo "packages:" > ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml
export system_compiler=$(jq -Mrc '
.stack
 | .system_arch as $arch
 | .system_compiler
 | to_entries
 | .[].value
 | "\(.compiler)@\(.version) \($arch)"
' ${STACK_CONFIG})

jq -Mrc '
.stack.system_packages
 | map("  \(.):\n    require:\n    - spec: \"%\(env.system_compiler)\"")
 | .[]
' ${STACK_CONFIG} >> ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml
