name: Prepare for deployment.

on:
  push:
    branches:
      - 'main'

jobs:
  minify:
    runs-on: ubuntu-latest
    env:
      GH_TOKEN: ${{ github.token }}
    steps:
      - uses: actions/checkout@v3
      - uses: actions/setup-node@v3
        with:
          node-version: '16'

      - name: Install dependencies.
        run: npm i -g terser csso-cli html-minifier

      - run: |
          git branch temp
          git checkout temp

      - name: Minify files.
        run: |
          for i in `find . -name "*.js" -type f`; do terser $i --compress -o $i; done
          for i in `find . -name "*.css" -type f`; do csso $i -o $i; done
          for i in `find . -name "*.html" -type f`; do html-minifier --remove-comments --collapse-whitespace $i -o $i; done
      
      - run: |
          git config --global user.email "you@example.com"
          git config --global user.name "Your Name"
          git commit -am "STUFF"
      - run: |
          git push -f --set-upstream origin temp
      - run: gh pr create --title "Pull request title" --body "Pull request body" --base "build"