label-alpha-release.yml

name: Autorelease alpha version

on:
  pull_request:
    types:
      - labeled

jobs:
  check-permissions:
    name: "Check user has permission to release"
    runs-on: ubuntu-latest
    outputs:
# can have multiple outputs
#      check-result: ${{ steps.check-permissions.outputs.check-result }}
#      user-permission: ${{ steps.check-permissions.outputs.user-permission }}
      require-result: ${{ steps.check-permissions.outputs.require-result }}
    steps:
      - uses: actions-cool/check-user-permission@v2
        id: check-permissions
        with:
          require: 'write'
  warn-when-failed:
    name: Warn when the user does not have the required permissions
    runs-on: ubuntu-latest
    needs: check-permissions
    if: needs.check-permissions.outputs.require-result == 'false'
    steps:
      - run: echo "The user does not have the write permissions to trigger this action (pun intended)."
      - run: echo "require-result = ${{ needs.check-permissions.outputs.require-result }}"

  label-alpha-release:
    name: Release alpha version based on PR label
    runs-on: ubuntu-latest
    needs: check-permissions
    if: needs.check-permissions.outputs.require-result == 'true' && 
        contains(github.event.pull_request.labels.*.name, 'release alpha')
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.pull_request.base.ref }}
          token: ${{ secrets.POSTHOG_BOT_GITHUB_TOKEN }}
          fetch-depth: 0

      - uses: pnpm/action-setup@v4
        with:
          version: 8.x.x
      - uses: actions/setup-node@v4
        with:
          node-version: '18'
          registry-url: https://registry.npmjs.org
          cache: 'pnpm'
      - run: pnpm install

      - name: Determine new version
        id: versions
        if: steps.bump-type.outputs.bump-type != 'null'
        run: |
          OLD_VERSION=$(jq ".version" package.json -r)
          NEW_VERSION=$(pnpx semver $OLD_VERSION -i prerelease --preid alpha)
          echo "old-version=$OLD_VERSION" >> "$GITHUB_OUTPUT"
          echo "new-version=$NEW_VERSION" >> "$GITHUB_OUTPUT"

      - name: Update version in package.json
        if: steps.bump-type.outputs.bump-type != 'null'
        run: |
          mv package.json package.old.json
          jq --indent 4 '.version = "${{ steps.versions.outputs.new-version }}"' package.old.json > package.json
          rm package.old.json

      - name: Publish the alpha in the npm registry
        run: npm publish --access public --tag alpha
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}