name: Generate Files

# After any push to the main branch, re-generate pregenerated files.
on:
  push:
    branches:
      - main

jobs:
  generate:
    runs-on: ubuntu-20.04

    steps:
      - uses: actions/checkout@v2
      - name: Merge generated branch with main
        run: cd ${{ github.workspace} && (git checkout generated || git checkout -b generated) && git merge --no-edit main
      - name: Rebuild generated CMake files
        run: cd ${{ github.workspace }} && bazel test cmake:test_generated_files || bazel-bin/cmake/test_generated_files --fix
      - name: Commit and push changes to generated files
        run: cd ${{ github.workspace }} && git add -A && git diff --staged --quiet || (git commit -am "Regenerated files" && git push)