name: 'Gitea SSH Command'
description: 'Executes a shell command/script on a remote server via SSH on a custom port.'

inputs:
  private_key:
    description: 'Private SSH Key'
    required: true
  command:
    description: 'Shell command or multi-line script to run on the remote server'
    required: true
  host:
    description: 'Remote server hostname or IP'
    required: true
  username:
    description: 'SSH username'
    required: true
  port:
    description: 'SSH port'
    required: false
    default: '22'

runs:
  using: "composite"
  steps:
    - name: Run SSH Command
      shell: bash # Required for composite actions
      env:
        SSH_KEY: ${{ inputs.private_key }}
        COMMAND: ${{ inputs.command }}
        HOST: ${{ inputs.host }}
        USERNAME: ${{ inputs.username }}
        PORT: ${{ inputs.port }}
      run: |
        set -euo pipefail

        # 1. Setup the SSH directory and private key
        mkdir -p ~/.ssh
        chmod 700 ~/.ssh
        echo "$SSH_KEY" > ~/.ssh/ssh_command_key
        chmod 600 ~/.ssh/ssh_command_key

        # 2. Configure SSH for the custom port/user and bypass host key prompt
        cat >> ~/.ssh/config <<EOF
        Host $HOST
          Port $PORT
          User $USERNAME
          IdentityFile ~/.ssh/ssh_command_key
          StrictHostKeyChecking no
        EOF

        # 3. Run the command on the remote host, piped over stdin so multi-line
        #    scripts and embedded quotes don't need any local shell-escaping.
        #    Remote stdout/stderr stream straight into this step's log, and the
        #    remote command's exit code becomes this step's exit code.
        echo "Running command on $HOST..."
        printf '%s\n' "$COMMAND" | ssh "$HOST" bash -s