name: SSH setup
description: Set up the SSH agent

inputs:
  config:
    description: The SSH configuration
    required: true
  key:
    description: The private SSH key
    required: true
  known-hosts:
    description: The list of known hosts
    required: true

runs:
  using: composite

  steps:
    - name: Configure SSH
      shell: sh
      env:
        CONFIG: ${{ inputs.config }}
        KNOWN_HOSTS: ${{ inputs.known-hosts }}
      run: |
        mkdir -p ~/.ssh
        echo "${CONFIG}" > ~/.ssh/config
        echo "${KNOWN_HOSTS}" > ~/.ssh/known_hosts

    - name: Start SSH agent
      shell: bash
      env:
        SOCKET: /tmp/ssh-agent.sock
      run: |
        echo "SSH_AUTH_SOCK=${SOCKET}" >> $GITHUB_ENV
        ssh-agent -a ${SOCKET} > /dev/null

    - name: Add SSH key
      shell: bash
      env:
        KEY: ${{ inputs.key }}
      run: |
        ssh-add - <<< "${KEY}"