website_deployment.yml

name: Website Deployment
on:
  pull_request:
    types: [labeled]
  repository_dispatch:
    types: [site-deploy]

jobs:

  unlabel:
    name: Label taking off
    if: github.event_name == 'pull_request' && github.event.label.name == 'review docs'
    runs-on: ubuntu-latest
    steps:

    - uses: actions/github-script@0.3.0
      with:
        github-token: ${{secrets.GITHUB_TOKEN}}
        script: "github.issues.removeLabel({...context.issue, name: '${{ github.event.label.name }}' })"

  deploy:
    name: Deploy
    if: github.event_name == 'repository_dispatch' || (github.event_name == 'pull_request' && github.event.label.name == 'review docs')
    runs-on: ubuntu-latest
    steps:

    # TODO: variables[review_sha]=${{ github.sha }} (currently, werf does not fetch PRs' refs)
    - name: Deploy website to review
      run: |
        curl -X POST \
             -F "token=${{ secrets.GITLAB_TRIGGER_TOKEN }}" \
             -F "ref=master" \
             -F "variables[review_sha]=${{ github.event.pull_request.head.sha }}" \
             ${{ secrets.GITLAB_URL }}/api/v4/projects/${{ secrets.GITLAB_PROJECT_ID }}/trigger/pipeline
      if: github.event_name == 'pull_request'

    - name: Deploy website to production
      run: |
        curl -X POST \
             -F "token=${{ secrets.GITLAB_TRIGGER_TOKEN }}" \
             -F "ref=master" \
             ${{ secrets.GITLAB_URL }}/api/v4/projects/${{ secrets.GITLAB_PROJECT_ID }}/trigger/pipeline
      if: github.event_name == 'repository_dispatch'