release-check.yml

name: Check for new CumulusMX release

# This script runs on a schedule to check for new releases from the upstream repo. If it finds a new release writes the latest release number to a file. 
# Credit to peterevans on stackoverflow for the script: https://stackoverflow.com/a/58468828

on:
  schedule:
    - cron:  '21 19 * * *'

  workflow_dispatch:

jobs:
  get-version:
    runs-on: ubuntu-latest
    env:
      SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}

    steps:

      - uses: actions/checkout@v4
        with:
          token: ${{ secrets.PAT }}

      - name: Get current version number
        run: |
          CURRENT_VERSION=$(cat upstream-releases/cumulusmx-latest.txt)
          echo "CURRENT_VERSION=$CURRENT_VERSION" >> $GITHUB_ENV
  
      - name: Get latest version number
        run: |
          RELEASE_DATA=$(curl -sL "https://api.github.com/repos/cumulusmx/CumulusMX/releases/latest" 2>/dev/null)
          NEW_VERSION=$(echo "$RELEASE_DATA" | jq -r '.tag_name')
          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV
  
      - name: Compare version numbers
        run: |
          if [ -n "${{ env.CURRENT_VERSION }}" ]; then
            if [ "${{ env.CURRENT_VERSION }}" = "${{ env.NEW_VERSION }}" ]; then
              echo "Releases match. No change detected."
              echo "MODIFIED=false" >> $GITHUB_ENV
            else
              echo "Releases differ. There has been a new release."
              echo "${{ env.NEW_VERSION }}" > upstream-releases/cumulusmx-latest.txt
              # Trigger the build-and-push workflow
              curl -X POST \
              -H "Accept: application/vnd.github.v3+json" \
              -H "Authorization: token ${{ secrets.PAT }}" \
              https://api.github.com/repos/hucknz/cumulusmx/actions/workflows/v4-container-build-push.yml/dispatches \
              -d '{"ref":"main"}'
              echo "MODIFIED=true" >> $GITHUB_ENV
            fi
          fi

      - name: Commit latest hash
        if: env.MODIFIED == 'true'
        run: |
          git config --global user.name 'hucknz'
          git config --global user.email '12265772+hucknz@users.noreply.github.com'
          git commit -am "New release version found"
          git push
  
      - name: Notify new image found to Slack
        id: notify_new_release
        if: env.MODIFIED == 'true'
        uses: act10ns/slack@v2
        with:
          status: ${{ job.status }}
          steps: ${{ toJson(steps) }}
          message: "A new CumulusMX version was found. The build and push workflow has been triggered."
      
      - name: Notify failure to Slack
        id: notify_failure
        if: failure()
        uses: act10ns/slack@v2
        with:
          status: ${{ job.status }}
          steps: ${{ toJson(steps) }}
          message: "CumulusMX release check was a ${{ job.status }}"