#!/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


echo "Copying cp ${STACK_CONFIG_PATH}/spack.yaml to ${SPACK_SYSTEM_CONFIG_PATH}/"
cp ${STACK_CONFIG_PATH}/spack.yaml ${SPACK_SYSTEM_CONFIG_PATH}

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

declare -A file_mapping
file_mapping["_common"]=""
file_mapping["_stack"]="_stack"
file_mapping["_acc_${acc_type}"]="_accel"
file_mapping["_${environment}"]="_env"

declare -A placeholders
placeholders["{target}"]="${target}"
placeholders["{gcc_version}"]=$(jq -Mrc '.stack.compilers.gcc.version' ${STACK_CONFIG})
if [ "${accelerator}" != "none" ]
then
  placeholders["{${acc_type}_arch}"]="${acc_arch}"
fi

echo blip

for file in mirrors packages concretizer config definitions modules
do
  for suffix in ${!file_mapping[@]}
  do
    src=${STACK_CONFIG_PATH}/${file}${suffix}.yaml
    dst=${SPACK_SYSTEM_CONFIG_PATH}/${file}"${file_mapping[$suffix]}".yaml
    if [ -e "${STACK_CONFIG_PATH}/${file}${suffix}.yaml" ]
    then
      echo "Copying $src to $dst"
      cp "$src" "$dst"

      for ph in ${!placeholders[@]}
      do
        rep=${placeholders[$ph]}
        sed -i -e "s/$ph/$rep/g" "$dst"
      done
    fi
  done
done


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

cat <<EOF > ${SPACK_SYSTEM_CONFIG_PATH}/modules_stack.yaml
modules:
  default:
    roots:
      lmod: ${STACK_LOCATION}/spack/share/spack/lmod/${environment}
      tcl: ${STACK_LOCATION}/spack/share/spack/modules/${environment}
EOF

mirrors=$(jq -Mrc '
.spack.mirrors
  | to_entries
  | map(select(.value.type="relative"))
  | map("  \(.key): \(env.STACK_LOCATION)/\(.value.url)")
  | .[]
' ${STACK_CONFIG})

cat <<EOF > ${SPACK_SYSTEM_CONFIG_PATH}/mirrors.yaml
mirrors:
${mirrors}
EOF


echo "Setting up packages"

if [ -e ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml ]
then
  mv ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml packages.yaml.old
fi

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

export system_compiler=$(jq -Mrc '
.stack
 | .system_compiler
 | to_entries
 | .[].value
 | "\(.compiler)@\(.version)"
' ${STACK_CONFIG})

export system_arch=$(jq -Mrc '
.stack.system_arch
' ${STACK_CONFIG})

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

if [ -e packages.yaml.old ]
then
  yq eval-all --inplace 'select(fileIndex==0) *+ select(fileIndex==1)' \
    ${SPACK_SYSTEM_CONFIG_PATH}/packages.yaml packages.yaml.old
  rm packages.yaml.old
fi

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 " - ${spack_external_repos}/${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

for file in mirrors packages concretizer config modules repos
do
  if [ -e "${SPACK_SYSTEM_CONFIG_PATH}/${file}.yaml" ]
  then
    cp "${SPACK_SYSTEM_CONFIG_PATH}/${file}.yaml" spack/etc/spack
  fi
done


echo "Setting up buildcache"

spack/bin/spack gpg trust \
    $GPG_PRIVATE_KEY

if [ ! -d ${MOUNT_POINT}/buildcache/build_cache ]; then
  spack/bin/spack gpg publish \
      -d ${MOUNT_POINT}/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://${MOUNT_POINT}/buildcache
fi

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

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