name: Auto Format

on:
  pull_request:
    types: [opened, synchronize]

permissions:
  contents: write

jobs:
  format:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          token: ${{ secrets.GITHUB_TOKEN }}

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'

      - name: Install Biome
        run: npm install --save-dev @biomejs/biome

      - name: Run Biome format
        run: npx @biomejs/biome check --write --no-errors-on-unmatched .

      - name: Check for changes
        id: changes
        run: |
          if git diff --quiet; then
            echo "has_changes=false" >> $GITHUB_OUTPUT
          else
            echo "has_changes=true" >> $GITHUB_OUTPUT
          fi

      - name: Commit changes
        if: steps.changes.outputs.has_changes == 'true'
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git add .
          git commit -m "style: auto-format with Biome"
          git push