name: Bump version on merge

on:
  push:
    branches:
      - master

permissions:
  contents: write

jobs:
  bump-version:
    name: Bump version in config
    runs-on: ubuntu-latest
    if: github.actor != 'github-actions[bot]'
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: master

      - name: Update version in config
        run: |
          version="master-$(date -u -Iseconds)"
          sed -i "s/GRUB_BTRFS_VERSION=.*/GRUB_BTRFS_VERSION=${version}/" config
          echo "VERSION=${version}" >> $GITHUB_ENV

      - name: Commit updated config
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git add config
          git commit -m "chore: bump version to ${{ env.VERSION }}"
          git push origin master