name: Release

# Tag a version (v1.2.3) to cut a release. jsDelivr serves straight from
# GitHub, so the release itself is the CDN publish:
#
#   https://cdn.jsdelivr.net/gh/vanilla-ui-kit/components@1.2.3/dist/vanilla-ui-kit.js
#   https://cdn.jsdelivr.net/gh/vanilla-ui-kit/components@1/dist/vanilla-ui-kit.js  (latest 1.x)
#
# The workflow verifies the tag matches package.json, proves dist/ was built
# from these sources, runs the tests, publishes a GitHub Release with the
# dist files attached, and purges jsDelivr's cache for the un-versioned URLs
# used in the docs.

on:
  push:
    tags: ['v*']

permissions:
  contents: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v4
        with:
          node-version: 22

      - name: Tag matches package.json version
        run: |
          PKG_VERSION="$(node -p "require('./package.json').version")"
          TAG_VERSION="${GITHUB_REF_NAME#v}"
          if [ "$PKG_VERSION" != "$TAG_VERSION" ]; then
            echo "Tag $GITHUB_REF_NAME does not match package.json version $PKG_VERSION" >&2
            exit 1
          fi

      - name: Build dist/
        run: npm run build

      - name: dist/ committed in sync with sources
        run: git diff --exit-code -- dist

      - name: Run tests
        run: npm test

      - name: Create GitHub Release with CDN assets
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release create "$GITHUB_REF_NAME" \
            dist/vanilla-ui-kit.js \
            dist/vanilla-ui-kit.css \
            dist/datepicker.css \
            dist/toast.css \
            --title "vanilla-ui-kit $GITHUB_REF_NAME" \
            --generate-notes

      - name: Purge jsDelivr cache for un-versioned URLs
        run: |
          # The docs use branch-pinned (un-versioned) CDN URLs, which jsDelivr
          # caches for up to 12 hours. Purge them so a new release is live
          # immediately. Versioned URLs are immutable and need no purge.
          for f in \
            dist/vanilla-ui-kit.js \
            dist/vanilla-ui-kit.css \
            dist/datepicker.css \
            dist/toast.css \
            core/core.js \
            datepicker/datepicker.js \
            toast/toast.js
          do
            echo "purge $f"
            curl -fsS "https://purge.jsdelivr.net/gh/vanilla-ui-kit/components/$f" || true
            curl -fsS "https://purge.jsdelivr.net/gh/vanilla-ui-kit/components@1/$f" || true
            echo
          done