name: CI

on: [push]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Run a one-line script
      run: echo Running Github workflow
    - name: Syncing staging branch
      if: github.ref == 'refs/heads/master' && success()
      run: |
          echo "Syncing staging branch"
          git remote add github "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$GITHUB_REPOSITORY.git"
          git remote -v
          git fetch github
          git checkout master
          echo "Pulling master"
          git pull github master
          echo "Deleting staging branch"
          git show-ref --verify --quiet "refs/heads/staging" && git branch -D staging
          echo "Checking out new staging branch"
          git checkout -b staging
          echo "Force pushing new staging"
          git push -f github staging
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_PAT }}
        GITHUB_USER: $GITHUB_ACTOR