Compare local cookbook versions to Chef server versions before `berks upload`

berks_preflight_check.sh

#!/bin/zsh

TMPDIR=$(mktemp -d)

# check for gsed usage
if [ "$(uname)" = "Darwin" ]; then
  if [ ! -x "/usr/local/bin/gsed" ]; then
    echo "macOS platform detected, but gsed not found. Please install it."
    exit 1
  fi
  alias sed="/usr/local/bin/gsed"
fi

berks list -F json | jq -r '.cookbooks[] | [.name,.version] | @csv' | tr -d \" >"$TMPDIR/cookbooks_needed"
knife cookbook list -aF json | jq -r '.[]' >"$TMPDIR/cookbooks_available"

function cookbook_versions_available() {
  name=$1
  grep "$name" "$TMPDIR/cookbooks_available" | tr -s ' ' | cut -d ' ' -f2-
}

function has_cookbook_version() {
  name=$1
  version=$2
  cookbook_versions_available "$name" | grep -q "\(^\s*$version\|\s$version\s\|\s$version$\)"
  return $?
}

while read -r cookbook; do
  name=$(echo "$cookbook" | awk -F, '{print $1}')
  version=$(echo "$cookbook" | awk -F, '{print $2}')
  echo -n "Checking for cookbook $name v${version}..."
  if has_cookbook_version "$name" "$version"; then
    echo 'ok'
  else
    echo -n "NOT FOUND. "
    versions=$(cookbook_versions_available "$name")
    if [ -z "$versions" ]; then
      echo "nothing further located"
    else
      # pattern matching doesn't work properly in macos sed, so use gnu sed
      # shellcheck disable=SC2001
      echo "available versions: $(echo "$versions" | sed 's/\s\+/, /g')"
    fi
  fi
done <"$TMPDIR/cookbooks_needed"