name: Check for Hugo releases

# TODO: instead of failing CI, send a notification via email/slack/twilio/etc.

on:
  schedule:
  - cron: '0 */3 * * *'   # run every three hours

jobs:
  check:
    runs-on: ubuntu-latest
    env:
      # https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
      ACTIONS_ALLOW_UNSECURE_COMMANDS: true
    steps:
    - name: Get latest Hugo version
      # https://gist.github.com/lukechilds/a83e1d7127b78fef38c2914c4ececc3c
      run: |
        HUGO_VERSION=$(curl --silent "https://api.github.com/repos/gohugoio/hugo/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
        echo "::set-env name=HUGO_VERSION::$HUGO_VERSION"
    - name: Get latest package version
      run: |
        PACKAGE_VERSION=v$(npm show hugo-extended version)  # prepend v to match above format
        echo "::set-env name=PACKAGE_VERSION::$PACKAGE_VERSION"
    - name: Compare versions
      run: |
        echo "Current Hugo version is $HUGO_VERSION."
        echo "Current package version is $PACKAGE_VERSION."

        if [ "$HUGO_VERSION" != "$PACKAGE_VERSION" ]
        then
          echo "🚨 Needs updating!"
          echo "::set-env name=UPDATE_AVAILABLE::true"
          exit 1
        else
          echo "✅ All good for now."
          echo "::set-env name=UPDATE_AVAILABLE::false"
          exit 0
        fi