action.yml

name: "Code Style Check"
description: "Reusable action to check C/C++ code style with clang-format"
inputs:
  target_dir:
    description: "Directory to check for C/C++ files"
    required: false
    default: "."
  name:
    description: 'Name for the output artifact'
    required: false
    default: 'code-style-check-report'
  fail-on-findings:
    description: "Whether to fail the action if issues are found"
    required: false
    default: "true"

runs:
  using: "composite"
  steps:
    - name: Install dependencies
      run: |
        sudo apt-get update
        sudo apt-get install --no-install-recommends -y clang-format curl ca-certificates build-essential
        curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
        sudo apt-get install -y nodejs
        npm install -g diff2html-cli
      shell: bash

    - name: Run code style check
      id: code-style-check
      env:
        target_dir: ${{ inputs.target_dir }}
      run: |
        chmod +x .github/actions/common/code-style/entrypoint.sh
        ./.github/actions/common/code-style/entrypoint.sh "${target_dir}" || echo "STYLE_ISSUES=true" >> $GITHUB_OUTPUT
      shell: bash

    - name: Analyze code style results
      if: always()
      run: |
        if [ "${{ steps.code-style-check.outputs.STYLE_ISSUES }}" == "true" ]; then
          # Count number of files with style issues
          if [ -f "_output/diff.html" ]; then
            # Try to count files from diff output
            file_count=$(diff -u --recursive "${{ inputs.target_dir }}" "_styled/${{ inputs.target_dir }}" 2>/dev/null | grep -c "^diff -u" || echo "1+")

            echo "### Code Style Check Results" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "- ❌ **Status**: Style issues found" >> $GITHUB_STEP_SUMMARY
            echo "- 📁 **Files affected**: ${file_count}" >> $GITHUB_STEP_SUMMARY
            echo "- 📄 **Detailed report**: Available in artifacts (diff.html)" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "⚠️ **Please review the code-style report artifact and apply clang-format to fix the issues.**" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "💡 **Tip**: Run \`clang-format -i\` on the affected files to automatically fix formatting." >> $GITHUB_STEP_SUMMARY
          fi
        else
          echo "### Code Style Check Results" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "✅ **All code follows the style guidelines!**" >> $GITHUB_STEP_SUMMARY
        fi
      shell: bash

    - name: Upload clang-format report
      if: always()
      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
      with:
        name: ${{ inputs.name }}
        path: _output/diff.html
        if-no-files-found: ignore

    - name: Fail if code style issues found
      if: inputs.fail-on-findings == 'true' && steps.code-style-check.outputs.STYLE_ISSUES == 'true'
      shell: bash
      run: |
        echo "❌ Code style issues found. Failing the job."
        exit 1