action.yml

name: 'Static Site Preview (SSP)'
description: 'Deploy static site previews via ssh.'
author: 'Dafnik'
branding:
  icon: 'truck'
  color: 'purple'

inputs:
  source:
    required: true
    description: 'Path to the files which should be deployed'
  target:
    required: true
    description: 'Preview server target path, must be a directory path.'
  host:
    required: true
    description: 'Preview server domain'
  port:
    description: 'Preview server ssh port'
    default: '22'
  username:
    required: true
    description: 'Preview server ssh username'
  key:
    description: 'Preview server ssh key content of private key. ex raw content of ~/.ssh/id_rsa'
  strip_components:
    description: 'remove the specified number of leading path elements'
    default: '0'
  delete_threshold_days:
    default: '30'
    description: 'Number of days after inactive previews are deleted'

runs:
  using: 'composite'
  steps:
    - name: Check if run from pull request
      shell: bash
      if: github.event_name != 'pull_request'
      run: |
        echo "SSP can only be run from pull requests, stopping..."
        echo "Check for pull request in the action step like this"
        echo "if: github.event_name == 'pull_request'"
        exit 1

    - id: setup
      shell: bash
      name: Setup hash identifier & date
      run: |
        echo "name=${{ github.event.repository.name }}-${{ github.event.number }}" >> "$GITHUB_OUTPUT"
        current_date=$(date '+%Y-%m-%d %H:%M:%S (%Z)')
        echo "current_date=$current_date" >> "$GITHUB_OUTPUT"
        future_date=$(date -d "+${{ inputs.delete_threshold_days }} days" '+%Y-%m-%d')
        echo "future_date=$future_date" >> "$GITHUB_OUTPUT"

    - id: hash
      shell: bash
      name: Create hash
      run: |
        echo Hash identifier: "${{ steps.setup.outputs.name }}"
        hash=$(echo -n "${{ steps.setup.outputs.name }}" | md5sum | awk '{print $1}')
        short_hash=${hash:0:10}
        echo "md5=$short_hash" >> "$GITHUB_OUTPUT"
        echo "url=https://$short_hash.${{ inputs.host }}" >> "$GITHUB_OUTPUT"

    - name: Check if hash is empty
      shell: bash
      run: |
        if [ -z "${{ steps.hash.outputs.md5 }}" ]; then
          echo "MD5 hash generation failed, stopping..."
          exit 1
        else
          echo "MD5 hash: ${{ steps.hash.outputs.md5 }}"
        fi

    - name: Copy source files to target server
      uses: appleboy/scp-action@v0.1.7
      with:
        overwrite: true
        host: ${{ inputs.host }}
        username: ${{ inputs.username }}
        key: ${{ inputs.key }}
        port: ${{ inputs.port }}
        source: ${{ inputs.source }}
        target: '${{ inputs.target }}/${{ steps.hash.outputs.md5 }}'
        strip_components: ${{ inputs.strip_components }}

    - name: Create or update sticky pull request comment
      uses: marocchino/sticky-pull-request-comment@v2
      with:
        message: |
          This pull request has been automatically deployed using Dafnik's static site preview (SSP) action.
          [Learn more](https://github.com/Dafnik/ssp).

          🔎 **Commit:** ${{ github.sha }}
          📅 **Updated at:** ${{ steps.setup.outputs.current_date }}
          ✅ **Preview URL:** <${{ steps.hash.outputs.url }}>

          **Note:** If there is no further activity, this preview will be deleted **${{ inputs.delete_threshold_days }} day(s) from now** on ${{ steps.setup.outputs.future_date }}.

outputs:
  url:
    description: Deployment url
    value: ${{ steps.hash.outputs.url }}