sync-data.yml

name: Sync Metadata to data Branch

on:
  push:
    branches: [main]
    paths:
      - "data/counter.json"
      - "data/lessons.json"

permissions:
  contents: read

jobs:
  sync:
    permissions:
      contents: write
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
        with:
          fetch-depth: 0

      - name: Guard against empty lessons.json
        run: |
          SIZE=$(stat --printf="%s" data/lessons.json)
          if [ "$SIZE" -lt 100 ]; then
            echo "::error::data/lessons.json is $SIZE bytes — refusing to sync"
            exit 1
          fi

      - name: Push to data branch
        env:
          GIT_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git config user.name "misakanet-bot"
          git config user.email "bot@misakanet.dev"
          git remote set-url origin "https://x-access-token:${GIT_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
          # Fetch + checkout data branch (use --track to disambiguate from data/ directory)
          git fetch origin data
          git checkout --track origin/data
          # Overwrite with current versions from main
          git checkout main -- data/counter.json data/lessons.json
          # Commit if changed
          if ! git diff --quiet; then
            git add data/counter.json data/lessons.json
            git commit -m "sync: auto-update metadata from main@$(git rev-parse --short main)"
            git push origin data
          else
            echo "No changes — data branch already up to date"
          fi
          git checkout main