name: Upgrade to latest versions

on:
  workflow_dispatch:
  schedule:
    - cron: '37 7 * * 1'
jobs:
  versions:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        branch:
          - 'release-0.5'
          - 'release-0.6'
          - 'release-0.7'
          - 'release-0.8'
          - 'main'
    steps:
    - uses: actions/checkout@v2
      with:
        ref: ${{ matrix.branch }}
    - uses: actions/setup-go@v2
      with:
        go-version: 1.16
    - name: Upgrade versions
      run: |
        export GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}
        # Write to temporary file to make update atomic
        scripts/generate-versions.sh > /tmp/versions.json
        mv /tmp/versions.json jsonnet/kube-prometheus/versions.json
      if: matrix.branch == 'main'
    - name: Update jsonnet dependencies
      run: |
        make update
        make generate

        # Reset jsonnetfile.lock.json if no dependencies were updated
        changedFiles=$(git diff --name-only | grep -v 'jsonnetfile.lock.json' | wc -l)
        if [[ "$changedFiles" -eq 0 ]]; then
          git checkout -- jsonnetfile.lock.json;
        fi
    - name: Create Pull Request
      uses: peter-evans/create-pull-request@v3
      with:
        commit-message: "[bot] [${{ matrix.branch }}] Automated version update"
        title: "[bot] [${{ matrix.branch }}] Automated version update"
        body: |
          ## Description

          This is an automated version and jsonnet dependencies update performed from CI.

          Configuration of the workflow is located in `.github/workflows/versions.yaml`

          ## Type of change

          - [x] `NONE` (if none of the other choices apply. Example, tooling, build system, CI, docs, etc.)

          ## Changelog entry
          
          ```release-note

          ```
        team-reviewers: kube-prometheus-reviewers
        branch: automated-updates-${{ matrix.branch }}
        delete-branch: true
        # GITHUB_TOKEN cannot be used as it won't trigger CI in a created PR
        # More in https://github.com/peter-evans/create-pull-request/issues/155
        token: ${{ secrets.PROM_OP_BOT_PAT }}