assembly.sh

#!/bin/bash

download_helm_charts() {
  # Parse the charts.yaml file for helm repos to add
  while read -r repo_name repo_url; do
      helm repo add ${repo_name} ${repo_url}
  done < <(yq -r '.charts[] | "\(.name) \(.repo)"' charts.yaml)

  helm repo update

  # Get the repo name, chart name, and chart version to pull the charts
  # and save them to the 'charts' subdirectory
  while read -r repo_name chart_name chart_version; do
      helm pull --untar "${repo_name}/${chart_name}" --version "${chart_version}" -d charts
  done < <(yq -r '.charts[] | "\(.name) \(.chart) \(.version)"' charts.yaml)
}

do_bundle() {
  # Switch to the distribution directory
  pushd dist > /dev/null || exit 1

  echo "Downloading Porter CLI..."
  download_porter_cli

  # Build the bundle
  porter build --dir ../
  porter publish --force --dir ../ --reference ${BUNDLE_REGISTRY}/${BUNDLE_NAME}:v${BUNDLE_VERSION}
  porter archive ${BUNDLE_NAME}.tgz --reference ${BUNDLE_REGISTRY}/${BUNDLE_NAME}:v${BUNDLE_VERSION}

  # Package the CLI and the bundle in a distributable archive
  tar -czf ./${BUNDLE_NAME}-bundle.tar.gz porter ${BUNDLE_NAME}.tgz
}

download_porter_cli() {
  if [ "$PORTER_OS" == "linux" ]; then
    PORTER_FILENAME="porter-linux-amd64"
  elif [ "$PORTER_OS" == "darwin" ]; then
    PORTER_FILENAME="porter-darwin-amd64"
  elif [ "$PORTER_OS" == "windows" ]; then
    PORTER_FILENAME="porter-windows-amd64.exe"
  else
    echo "Unsupported operating system: $PORTER_OS"
    exit 1
  fi

  # Download the Porter CLI binary for use on systems that do not have Porter installed
  curl -L https://cdn.porter.sh/v${PORTER_VERSION}/$PORTER_FILENAME -o ./porter
  chmod +x ./porter
}

init() {
  # Get the latest Porter version
  PORTER_VERSION=$(porter version | grep -o -E '[0-9]+\.[0-9]+\.[0-9]+')

  # Get the Porter bundle name
  BUNDLE_NAME=$(cat ./porter.yaml | grep "name:" | head -n 1 | cut -d':' -f2 | xargs)
  BUNDLE_VERSION=$(cat ./porter.yaml | grep "version:" | head -n 1 | cut -d':' -f2 | xargs)
  BUNDLE_REGISTRY=$(grep -E '^registry:' porter.yaml | sed 's/"//g' | cut -d':' -f2,3 | xargs)

  # Create the "charts" directory if it doesn't exist
  mkdir -p charts
  touch charts/tmp
  rm -rf charts/*

  # Create the "dist" directory if nonexistent
  mkdir -p dist

  # Clear any previous distribution files
  rm -rf dist/*
}

finish() {
  popd > /dev/null
}

PORTER_OS=$(uname -s | tr '[:upper:]' '[:lower:]')
PORTER_OS=${PORTER_OS:-linux}
case "$PORTER_OS" in
  linux*)     PORTER_OS=linux;;
  darwin*)    PORTER_OS=darwin;;
  cygwin*)    PORTER_OS=windows;;
  mingw*)     PORTER_OS=windows;;
  *)          echo "Unsupported operating system: $(uname -s)" && exit 1
esac

# Prepare for script actions
echo "Initializing..."
init

# Download the helm charts
echo "Downloading helm charts..."
download_helm_charts

# Build and export the bundle to a portable file
echo "Creating and exporting bundle..."
do_bundle

echo "Finished..."
finish