action.yml

name: 'Check Docs Only Changes'
description: 'Check if only documentation files were changed'
outputs:
  docs-only:
    description: "True if only documentation files were changed"
    value: ${{ steps.check.outputs.docs_only }}
runs:
  using: "composite"
  steps:
    - name: Check if only docs changed
      id: check
      shell: bash
      run: |
        # Determine the base SHA for comparison
        if [ "${{ github.event_name }}" = "pull_request" ]; then
          # For PRs, compare against the base branch
          BASE_SHA="${{ github.event.pull_request.base.sha }}"
          FILES_CHANGED=$(git diff --name-only "${BASE_SHA}"...HEAD)
        else
          # For pushes, compare with previous commit
          FILES_CHANGED=$(git diff --name-only HEAD~1...HEAD 2>/dev/null || echo "")
        fi
        
        # Check if all changed files are in docs/ directory
        if [ -z "$FILES_CHANGED" ]; then
          echo "docs_only=false" >> $GITHUB_OUTPUT
          echo "No files changed"
        elif echo "$FILES_CHANGED" | grep -vE '^docs/' > /dev/null; then
          echo "docs_only=false" >> $GITHUB_OUTPUT
          echo "Non-documentation files changed"
        else
          echo "docs_only=true" >> $GITHUB_OUTPUT
          echo "All changes are in docs/ folder, checks will pass automatically"
        fi