on:
  push:
    branches:
      - main
  workflow_dispatch:
  
jobs:
  run_pull:
    name: run pull
    runs-on: ubuntu-latest
  
    steps:
    - name: install ssh keys
      # check this thread to understand why its needed:
      # https://stackoverflow.com/a/70447517
      run: |
        touch ~/.ssh/id_rsa
        echo "${{ env.SSH_PRIVATE_KEY }}" > ~/.ssh/id_rsa
        ssh-keyscan -H ${{ env.SSH_HOST }} > ~/.ssh/known_hosts
    - name: connect and pull
      run: ssh ${{ env.SSH_USER }}@${{ env.SSH_HOST }} "cd ${{ env.WORK_DIR }} && git checkout ${{ env.MAIN_BRANCH }} && git pull && exit"
    - name: cleanup
      run: rm -rf ~/.ssh