sync_branch.yaml

name: sync main with dev
on:
  push:
  # schedule:
    # - 0 8 * * * # Runs at 8am UTC
    
defaults:
  run:
    shell: bash -x -e -u -o pipefail {0}

jobs:
  sync-branches-via-rebase:
    runs-on: ubuntu-latest
    name: syncing main with dev
    outputs:
      date: ${{ steps.date.outputs.date }}
      commit-delta: ${{ steps.commit-delta.outputs.main }}
    environment: main
    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          ref: ko3n1g/dev
          fetch-depth: 0
          token: ${{ secrets.PAT }}

      - name: Get todays date
        id: date
        run: |
          DATE=$(date +"%Y-%m-%d")
          echo "date=$DATE" | tee -a "$GITHUB_OUTPUT"

      - name: Get commit delta
        id: commit-delta
        run: |
          git fetch origin main:main
          DELTA=$(git cherry -v ko3n1g/dev main | tr '+' '*')
          DELTA=$(echo "${DELTA//$'\n'/<<<NEWLINE>>>}")
            
          echo "main=$DELTA" | tee -a "$GITHUB_OUTPUT"

      - name: Attempt rebase
        run: |
          git config --global user.email "bot@nvidia.com"
          git config --global user.name "NVIDIA NeMo Bot"

          git fetch origin main
          git rebase origin/main
          git push --force

  notify-success:
    runs-on: ubuntu-latest
    if: success()
    needs: [sync-branches-via-rebase]
    env:
      DATE: ${{ needs.sync-branches-via-rebase.outputs.date }}
    steps:
      - name: Find PR
        id: fp
        env:
          REPOSITORY: ${{ github.repository }}
          GH_TOKEN: ${{ github.token }}
        run: |
          set +x
          PRs=$(curl -L \
            -H "Accept: application/vnd.github+json" \
            -H "Authorization: Bearer $GH_TOKEN" \
            -H "X-GitHub-Api-Version: 2022-11-28" \
            https://api.github.com/repos/$REPOSITORY/pulls)
          
          PR_NUMBER=$(echo -E "$PRs" \
            | jq '.[] 
            | select(.head.ref == "ko3n1g/dev")
            | .number'
          )
          set -x

          echo "pr-number=$PR_NUMBER" | tee -a "$GITHUB_OUTPUT"

      - name: Find Comment
        uses: peter-evans/find-comment@v3
        id: fc
        with:
          issue-number: ${{ steps.fp.outputs.pr-number }}
          body-includes: <!-- auto-rebase-message -->

      - name: Parse output
        run: |
          DELTA=${{ needs.sync-branches-via-rebase.outputs.commit-delta }}
          DELTA=$(echo "${DELTA//<<<NEWLINE>>>/\n}")

          echo "COMMIT_DELTA<<EOF" >> $GITHUB_ENV
          echo "$DELTA" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      - name: Add PR comment for PyLint 
        uses: peter-evans/create-or-update-comment@v4
        with:
          comment-id: ${{ steps.fc.outputs.comment-id }}
          issue-number: ${{ steps.fp.outputs.pr-number }}
          edit-mode: replace
          body: |
            <!-- auto-rebase-message -->
            
            beep boop 🤖: This branch was last rebased onto `main` on ${{ env.DATE }}.

            ---

            📢✨🪄 Updated commits:
            ```
            ${{ env.COMMIT_DELTA }}
            ```

  notify-failure: 
    runs-on: ubuntu-latest
    if: failure()
    needs: [sync-branches-via-rebase]
    env:
      RUN_URL: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}
      SLACK_WEBHOOK_ADMIN: "<!subteam^${{ secrets.SLACK_WEBHOOK_ADMIN }}>"
      SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK }}
      DATE: ${{ needs.sync-branches-via-rebase.outputs.date }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: NVIDIA/NeMo-FW-CI-templates
          ref: v0.5.0
          path: send-slack-alert

      # - name: Send Slack alert
      #   uses: ./send-slack-alert/.github/actions/send-slack-alert
      #   with:
      #     message: >
      #       Daily <${{ env.RUN_URL }}|sync main with dev> has failed for ${{ env.DATE }}.

      #       cc: ${{ env.SLACK_WEBHOOK_ADMIN }}
      #     webhook: ${{ env.SLACK_WEBHOOK }}