.github/workflows/sync-main-to-earlgrey-hwe.yml

name: Sync main into earlgrey-hwe

on:
  schedule:
    # Runs every day at 15:00 UTC (8:00 AM PDT / 7:00 AM PST)
    - cron: '0 15 * * *'
  workflow_dispatch: # Allows you to trigger it manually from the Actions tab

jobs:
  create-pull-request:
    runs-on: ubuntu-latest
    steps:
      - name: Generate GitHub App Token
        id: generate-token
        uses: actions/create-github-app-token@v3
        with:
          app-id: ${{ secrets.SYNCHRONIZE_BOT_APP_ID }}
          private-key: ${{ secrets.SYNCHRONIZE_BOT_PRIVATE_KEY }}

      - name: Checkout the main branch
        uses: actions/checkout@v6
        with:
          ref: main
          fetch-depth: 0 # Fetches all history so branches can be compared
          token: ${{ steps.generate-token.outputs.token }}

      - name: Create and push sync branch
        run: |
          git config --global user.name "synchronize-bot[bot]"
          git config --global user.email "synchronize-bot[bot]@users.noreply.github.com"

          # Create and switch to the staging branch
          git checkout -b sync/main-to-earlgrey-hwe

          # Push the sync branch to the repo.
          git push origin sync/main-to-earlgrey-hwe --force

      - name: Create Pull Request
        env:
          GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
        run: |
          PR_EXISTS=$(gh pr list --base earlgrey-hwe --head sync/main-to-earlgrey-hwe --state open --json number | jq '.[].number')

          if [ -z "$PR_EXISTS" ]; then
            echo "No active PR found. Generating a new sync PR..."
            gh pr create \
              --base earlgrey-hwe \
              --head sync/main-to-earlgrey-hwe \
              --title "chore: sync main into earlgrey-hwe" \
              --label "automated-pr,sync" \
              --reviewer "cfrantz,moidx" \
              --body $'Automated daily sync from `main` to `earlgrey-hwe`.\n\n⚠️ If conflicts exist, click the "Resolve conflicts" button below to fix them in your browser.'
          else
            echo "A Pull Request already exists (PR #$PR_EXISTS). Updates pushed to branch automatically."
          fi