name: Sync to Mirror Repository
on:
  push:
    branches:
      - '*'
env:

  
  EMAIL: ${{ secrets.email }}
  REPO_BRANCH: ${{ github.ref }}
  USERNAME: ${{ github.actor }}

  
jobs:
  sync:
    runs-on: ubuntu-latest
    
    steps:

    - name: Setup SSH keys
      run: |
        mkdir -p ~/.ssh
        echo "${{ secrets.SSH_PRIVATE_KEY }}" > ~/.ssh/id_ed25519
        chmod 600 ~/.ssh/id_ed25519
        ssh-keyscan github.com >> ~/.ssh/known_hosts

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

    - name: Checkout mirror repository
      run: |
        git clone git@github.com:$USERNAME/${GITHUB_REPOSITORY#*/}_${GITHUB_REF#refs/heads/}_sync.git
        git fetch --unshallow
        cd ${GITHUB_REPOSITORY#*/}_${GITHUB_REF#refs/heads/}_sync
        git checkout ${GITHUB_REF#refs/heads/}

    - name: Merge and Push
      run: |
        cd ${GITHUB_REPOSITORY#*/}_${GITHUB_REF#refs/heads/}_sync
        git config pull.rebase false
        git config --global user.email $EMAIL
        git config --global user.name $USERNAME
        git pull ../ ${GITHUB_REF#refs/heads/}
        git push origin ${GITHUB_REF#refs/heads/}