cron.yml

---

name: Check Repo Updates
on:
  workflow_dispatch:
  schedule:
    - cron: '0 0 * * 0' # Check every Sunday

env:
  IMAGES_DIR: "images"

jobs:
  # Generate the values for the matrix where the updates are executed
  generate-matrix:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.generate-matrix.outputs.matrix }}
    steps:

      - name: Checkout code
        uses: actions/checkout@v3

      - name: Generate Matrix Content
        id: generate-matrix
        run: |
          IMAGES=$( ls -1 ${{ env.IMAGES_DIR }} | tr '\n' ',' | sed 's/[^,]\+/"\0"/g;s/,$//' )
          echo "::set-output name=matrix::{ \"image\": [ ${IMAGES} ] }"
  # ---

  # Update the version of the existing images when possible and launch pull request
  check-repo-updates:
    needs: generate-matrix
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{ fromJson( needs.generate-matrix.outputs.matrix ) }}
    steps:

      - name: Checkout code
        uses: actions/checkout@v3

      - name: Set env vars
        run: |
          echo "IMAGE_DIR=./images/${{ matrix.image }}" >> $GITHUB_ENV

      - name: Update Current Tag
        id: update_tag
        run: |
          cd ${{ env.IMAGE_DIR }}
          echo "::set-output name=old-version::$( sed -n '/IMAGE_TAG/s/^.*=//p' image_info.sh || echo 'NOT_FOUND' )"

          [[ -f ./update_current_tag.sh ]] && ./update_current_tag.sh 

          echo "::set-output name=new-version::$( sed -n '/IMAGE_TAG/s/^.*=//p' image_info.sh || echo 'NOT_FOUND' )"
        continue-on-error: true

      # Launch Pull Request only when the version is updated 
      - name: Create Pull Request for ${{ matrix.image }}
        if: 
          ${{ steps.update_tag.outputs.old-version != steps.update_tag.outputs.new-version }}
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ secrets.GRADIANT_BOT_TOKEN }}
          base: main
          body: |
            This PR is auto-generated to automatically test and update version for image ${{ matrix.image }}
            From -> ${{ matrix.image }}:${{ steps.update_tag.outputs.old-version }} 
            To   -> ${{ matrix.image }}:${{ steps.update_tag.outputs.new-version }} 
          branch: ${{ matrix.image }}-version-update
          commit-message: "Updating version ${{ matrix.image }} [${{ steps.update_tag.outputs.old-version }} -> ${{ steps.update_tag.outputs.new-version }}] "
          delete-branch: true
          title: "[${{ matrix.image }}] Update Version ${{ steps.update_tag.outputs.old-version }} -> ${{ steps.update_tag.outputs.new-version }}"
  # ---