update-color-primitives.yml

name: Get/Update Primer Color Primitives

env:
  _DEST_DIR: '${{ github.workspace }}/lua/github-theme/palette/primitives'
  _JSON_DIR: '${{ github.workspace }}/node_modules/@primer/primitives/dist/json/colors'
  _LICENSE_GLOB: '${{ github.workspace }}/node_modules/@primer/primitives/[Ll][Ii][Cc][Ee][Nn][Ss][Ee]*'
  _PRIMITIVES_PKGJSON: '${{ github.workspace }}/node_modules/@primer/primitives/package.json'

on:
  workflow_dispatch:
  schedule:
    - cron: '40 19 1,15 * *' # Roughly every 2 weeks (at 12:40pm Pacific Time)
  push:
    branches:
      - '**' # Any branch, but ignore tag pushes
    paths:
      - .github/workflows/**/*
      - scripts/**/*
  pull_request:
    paths:
      - .github/workflows/**/*
      - scripts/**/*

jobs:
  get-colors:
    runs-on: ubuntu-latest
    permissions: # NOTE: `write` is not applied for PR's from forks
      checks: write
      contents: write
      issues: write
      packages: read
      pull-requests: write
      statuses: write

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: lts/*
          check-latest: true

      - run: npm i @primer/primitives@latest

      - name: Generate Lua files
        run: |
          set -u +f
          shopt -s nocaseglob failglob
          license="$(<$_LICENSE_GLOB)"
          rm -r "$_DEST_DIR" || :
          mkdir -p "$_DEST_DIR"
          cd "$_JSON_DIR"

          if jq -e .version "$_PRIMITIVES_PKGJSON"; then
            version="M._VERSION = vim.json.decode([=[$(jq -e .version "$_PRIMITIVES_PKGJSON")]=], { luanil = { object = false, array = false } })"
          fi

          for file in *.json; do
            cat >|"${_DEST_DIR}/${file%.json}.lua" <<EOF
          -- NOTE: THIS IS AN AUTO-GENERATED FILE. DO NOT EDIT BY-HAND.
          local M = vim.json.decode([=[$(<"$file")]=], { luanil = { object = false, array = false } })
          ${version-}
          M._LICENSE = [=[
          $license]=]
          return M
          EOF
          done

      - name: Check formatting (stylua)
        uses: JohnnyMorganz/stylua-action@v4
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          version: latest
          args: -f stylua.toml --verify -- ${{ env._DEST_DIR }}

      - id: diff
        run: git diff --quiet -- "$_DEST_DIR" || echo has_diff=true >> "$GITHUB_OUTPUT"

      - if: ${{ steps.diff.outputs.has_diff }}
        uses: actions/upload-artifact@v4
        with:
          name: primitives
          path: ${{ env._DEST_DIR }}
          retention-days: ${{ (github.event_name != 'push' || github.ref_name != 'main') && 14 || null }}
          if-no-files-found: error
          overwrite: true

      - if: ${{ github.event_name == 'push' || github.event_name == 'schedule' }}
        uses: peter-evans/create-pull-request@v6
        with:
          delete-branch: true
          branch: generated/primitives/${{ github.ref_name }}
          commit-message: 'deps: update color primitives'
          title: 'deps: update color primitives'
          body: |
            |                   |                          |
            | ----------------- | ------------------------ |
            | **Trigger**       | ${{ github.event_name }} |
            | **Target Branch** | ${{ github.ref_name }}   |

            > [!NOTE]
            > Checks are not automatically run for this PR.
            > Close and reopen this PR to run tests and checks (against the newly generated primitives).