#!/usr/bin/env bash

# updates the Helm charts for the AWS Load Balancer Controller in the CLI.
# script is mostly copied from cli/internal/helm/update-csi-charts.sh

set -euo pipefail
set -o errtrace
shopt -s inherit_errexit

echo "Updating AWS Load Balancer Controller Helm chart..."
branch="v0.0.140" # releases can update the AWS load-balancer-controller chart
# Required tools
if ! command -v git &> /dev/null; then
  echo "git could not be found"
  exit 1
fi

callDir=$(pwd)
repo_tmp_dir=$(mktemp -d)

chart_base_path="charts"
chart_name="aws-load-balancer-controller"

chart_url="https://github.com/aws/eks-charts"
chart_dir="stable/aws-load-balancer-controller"
cd "${repo_tmp_dir}"
git clone \
  --filter=blob:none \
  --no-checkout \
  --sparse \
  --depth 1 \
  --branch="${branch}" \
  "${chart_url}" "${repo_tmp_dir}"

git sparse-checkout add "${chart_dir}"
git checkout
cd "${callDir}"

# remove files being ignored in .helmignore due to wrong import of .helmignore in current implementation
rm -r "${repo_tmp_dir}/${chart_dir}/ci"
rm "${repo_tmp_dir}/${chart_dir}/crds/kustomization.yaml"
rm "${repo_tmp_dir}/${chart_dir}/test.yaml"

# delete current chart
rm -r "${chart_base_path:?}/${chart_name}"

# move new chart
mkdir -p "${chart_base_path}/${chart_name}"
# do not use /* because it will not copy hidden files
cp -r "${repo_tmp_dir}/${chart_dir}" "${chart_base_path}/"