#!/bin/bash -e

[[ -n "$CARGO_TARGET_CACHE_NAME" ]] || exit 0

#
# Restore target/ from the previous CI build on this machine
#
(
  d=$HOME/cargo-target-cache/"$CARGO_TARGET_CACHE_NAME"

  if [[ -d $d ]]; then
    du -hs "$d"
    read -r cacheSizeInGB _ < <(du -s --block-size=1000000000 "$d")
    if [[ $cacheSizeInGB -gt 5 ]]; then
      echo "$d has gotten too large, removing it"
      rm -rf "$d"
    fi
  fi

  mkdir -p "$d"/target
  set -x
  rsync -a --delete --link-dest="$d" "$d"/target .
)