sync-main-to-experimental.yml

name: Sync main to experimental

on:
  push:
    branches: [ main ]
  workflow_dispatch:

jobs:
  sync:
    runs-on: ubuntu-latest

    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Check out code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config pull.rebase false  # Always merge, never rebase

      - name: Sync main into experimental branch
        continue-on-error: true
        run: |
          BRANCH_NAME="chore/sync"
          git checkout -B $BRANCH_NAME origin/experimental

          # Merge main changes into experimental, preferring main changes on conflicts
          git fetch origin main
          git merge -X theirs origin/main --no-edit || echo "Merge completed (conflicts auto-resolved in favor of main)"

          # Run required update steps
          make update-protocol 'experimental'
          make install
          make build
          make update-snapshots

      - name: Commit and push changes in experimental
        run: |
          BRANCH_NAME="chore/sync"
          # Commit if there are changes
          git add -A .
          git commit --no-edit -m "updated protocol and snapshots" || echo "No changes to commit"

          # Push (force to keep PR updated)
          git push --force --set-upstream origin $BRANCH_NAME

      - name: Create or update PR
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          PR_NUMBER=$(gh pr list --base experimental --head chore/sync --state open --json number --jq '.[0].number')

          if [ -n "$PR_NUMBER" ]; then
            echo "PR #$PR_NUMBER already exists, adding comment..."
            gh pr comment $PR_NUMBER --body "🔄 Updated with latest changes from **main** on $(date -u '+%Y-%m-%d %H:%M UTC')"
          else
            echo "Creating new PR..."
            gh pr create \
              --base experimental \
              --head chore/sync \
              --title "chore: sync main to experimental" \
              --body ":crown: *Automated PR to keep experimental in sync with main (with protocol updates, build & snapshots)*" \
              --label "auto-pr"
          fi