name: Update README

on:
  push:
    branches: [master]

jobs:
  reorganize:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Generate table with `lpm`
        run: |
          wget https://github.com/lite-xl/lite-xl-plugin-manager/releases/download/latest/lpm.x86_64-linux -O lpm && chmod +x lpm
          # Unstub all stubs so we can make proper previews.
          ./lpm --userdir . init . && ./lpm --userdir . color install "*" && ./lpm purge --userdir .
          ./lpm exec scripts/make_preview_image.lua
          perl -pi -e 'exit(0) if $_ =~ m/^\-\-\-/' README.md
          echo "---" >> README.md
          echo -e "\n## Dark\n" >> README.md
          echo "| Theme                                                         | Preview" >> README.md
          echo "| :------------------------------------------------------------ | :----------------------------------------------------" >> README.md
          ./lpm table manifest.json --type color --tag "dark" | tail -n +3 | perl -pe '($w) = $_ =~ m/`([^`]+)`/; $_ =~ s/$/ \!\[$w\_preview\](previews\/$w.svg)/ if $w' >> README.md
          echo -e "\n## Light\n" >> README.md
          echo "| Theme                                                         | Preview" >> README.md
          echo "| :------------------------------------------------------------ | :----------------------------------------------------" >> README.md
          ./lpm table manifest.json --type color --tag "light" | tail -n +3  | perl -pe '($w) = $_ =~ m/`([^`]+)`/; $_ =~ s/$/ \!\[$w\_preview\](previews\/$w.svg)/ if $w' >> README.md
          if ! git diff --exit-code -s README.md; then
            git config --global user.name "Github Actions" && git config --global user.email "<>"
            git add README.md previews
            git commit -m '[CI] Updated README.md.'
            git push
          fi