name: NPM Release

# Runs when a new release is published on GitHub.
# Creates a corresponding NPM release and publishes it.
#
# Can also be run manually for debugging purposes.
on:
  release:
    types: [published]
  # For manual debugging:
  workflow_dispatch:
    inputs:
      ref:
        description: "The tag to release to NPM."
        required: True

jobs:
  publish_npm:
    name: Publish to NPM
    runs-on: ubuntu-latest
    steps:
      - name: Compute ref
        id: ref
        # We could be building from a workflow dispatch (manual run), or a
        # release event.  Subsequent steps can refer to $TARGET_REF to
        # determine the correct ref in all cases.
        run: |
          echo "TARGET_REF=${{ github.event.inputs.ref || github.event.release.tag_name }}" >> $GITHUB_ENV

      - name: Checkout code
        uses: actions/checkout@v2
        with:
          path: src
          ref: ${{ env.TARGET_REF }}

      - name: Setup NodeJS
        uses: actions/setup-node@v1
        with:
          node-version: 10

      - name: Set package version
        run: |
          cd src/npm
          npm version ${{ env.TARGET_REF }}

      - name: Publish NPM package
        uses: JS-DevTools/npm-publish@v1
        with:
          token: ${{ secrets.NPM_CI_TOKEN }}
          package: src/npm/package.json
          check-version: false