name: Build course PDFs and publish release assets

on:
  workflow_dispatch:
    inputs:
      tag:
        description: Release tag to create or update
        required: true
        type: string
      release_name:
        description: Release title
        required: true
        type: string
      prerelease:
        description: Mark release as prerelease
        required: false
        default: false
        type: boolean
  release:
    types:
      - published

permissions:
  contents: write

jobs:
  build-pdfs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Setup Node
        uses: actions/setup-node@v6
        with:
          node-version: 24
          cache: npm

      - name: Install dependencies
        run: npm ci

      - name: Install Chromium for Playwright
        run: npx playwright install --with-deps chromium

      - name: Build course PDFs
        run: npm run pdf:build

      - name: Upload PDF artifacts
        uses: actions/upload-artifact@v4
        with:
          name: course-pdfs
          path: artifacts/pdfs

      - name: Publish PDFs to existing release
        if: github.event_name == 'release'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.event.release.tag_name }}
          files: artifacts/pdfs/*.pdf

      - name: Create or update release with PDFs
        if: github.event_name == 'workflow_dispatch'
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ inputs.tag }}
          name: ${{ inputs.release_name }}
          prerelease: ${{ inputs.prerelease }}
          generate_release_notes: true
          files: artifacts/pdfs/*.pdf