#!/bin/bash

set -e

cd $(dirname $0)/..

. ./scripts/version.sh

RUNC_VERSION=v1.0.0-rc95
ROOT_VERSION=v0.9.1
TRAEFIK_CHART_VERSION=$(yq e '.spec.chart' manifests/traefik.yaml | awk 'match($0, /([0-9.]+)([0-9]{2})/, m) { print m[1]; }')
TRAEFIK_PACKAGE_VERSION=$(yq e '.spec.chart' manifests/traefik.yaml | awk 'match($0, /([0-9.]+)([0-9]{2})/, m) { print m[2]; }')
TRAEFIK_FILE=traefik-${TRAEFIK_CHART_VERSION}${TRAEFIK_PACKAGE_VERSION}.tgz
TRAEFIK_URL=https://charts.helm.sh/stable/packages/traefik-${TRAEFIK_CHART_VERSION}.tgz
CHARTS_DIR=build/static/charts
RUNC_DIR=build/src/github.com/opencontainers/runc
DATA_DIR=build/data

umask 022
rm -rf ${CHARTS_DIR}
rm -rf ${RUNC_DIR}
mkdir -p ${CHARTS_DIR}
mkdir -p ${DATA_DIR}

curl --compressed -sfL https://github.com/k3s-io/k3s-root/releases/download/${ROOT_VERSION}/k3s-root-${ARCH}.tar | tar xf -

git clone --depth=1 https://github.com/opencontainers/runc ${RUNC_DIR} || true
pushd ${RUNC_DIR}
git fetch --all --tags
git checkout ${RUNC_VERSION} -b k3s
popd

setup_tmp() {
    TMP_DIR=$(mktemp -d --tmpdir=${CHARTS_DIR})
    cleanup() {
        code=$?
        set +e
        trap - EXIT
        rm -rf ${TMP_DIR}
        exit $code
    }
    trap cleanup INT EXIT
}

download_and_package_traefik () {
  echo "Downloading Traefik Helm chart from ${TRAEFIK_URL}"
  curl -sfL ${TRAEFIK_URL} -o ${TMP_DIR}/${TRAEFIK_FILE}
  code=$?

  if [ $code -ne 0 ]; then
    echo "Error: Failed to download Traefik Helm chart!"
    exit $code
  fi

  echo "Uncompress ${TMP_DIR}/${TRAEFIK_FILE}"
  tar xf ${TMP_DIR}/${TRAEFIK_FILE} -C ${TMP_DIR}
  TRAEFIK_TMP_CHART=${TMP_DIR}/traefik

  # Move anything from ${f}/charts-crd/overlay-upstream to the main chart
  cp -R ./scripts/chart-templates/crd-base/overlay-upstream/* ${TRAEFIK_TMP_CHART}

  # Modify charts to support system-default-registry
  echo -e 'global:\n  systemDefaultRegistry: ""' >> ${TRAEFIK_TMP_CHART}/values.yaml
  find ${TRAEFIK_TMP_CHART} -type f | xargs sed -i 's/{{ .Values.image }}/{{ template "system_default_registry" .}}&/g'

  # Modify chart version to append package version.
  # If we alter our repackaging of the helm chart without also bumping the version of the
  # chart, the package version portion (final two digits) of the version string in the
  # traefik HelmChart manifest should be bumped accordingly.
  sed -Ei "s/version: .*/&${TRAEFIK_PACKAGE_VERSION}/" ${TRAEFIK_TMP_CHART}/Chart.yaml

  # Add dashboard annotations to main chart
  cat <<EOF >>${TRAEFIK_TMP_CHART}/Chart.yaml
annotations:
  fleet.cattle.io/bundle-id: k3s
EOF

  # Package charts
  OPTS="--format=gnu --sort=name --owner=0 --group=0 --mode=gou-s --numeric-owner --no-acls --no-selinux --no-xattrs"
  tar ${OPTS} --mtime='2021-01-01 00:00:00Z' -cf - -C ${TMP_DIR} $(basename ${TRAEFIK_TMP_CHART}) | gzip -n > ${CHARTS_DIR}/${TRAEFIK_FILE}
  for TAR in ${CHARTS_DIR}/*.tgz; do
    sha256sum ${TAR}
    stat ${TAR}
    tar -vtf ${TAR}
  done
}

setup_tmp
download_and_package_traefik

cp scripts/wg-add.sh bin/aux/