name: Generate layout previews

on:
  push:
  pull_request:

permissions:
  contents: write

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout Code
        uses: actions/checkout@v2

      - uses: DeterminateSystems/nix-installer-action@main
      - uses: DeterminateSystems/magic-nix-cache-action@main

      - name: Generate Files
        run: |
          nix run .#generate-layout-previews

      - name: Commit and Push Changes
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add .
          git diff --quiet --cached || git commit -m "Auto-generated layout previews [skip ci]"
          git push