pr-line-lint.yaml

name: PR Line Lint

on:
  pull_request:
    types: [opened, ready_for_review, synchronize]

permissions:
  contents: write
  pull-requests: write

jobs:
  line-ending-check:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Get list of changed files
        id: changed-files
        run: |
          changed_files=$(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.sha }})
          echo "Changed files:"
          echo "$changed_files"
          echo "files<<EOF" >> $GITHUB_OUTPUT
          echo "$changed_files" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Check for missing newlines
        id: newline-check
        run: |
          readarray -t changed_files <<< "${{ steps.changed-files.outputs.files }}"
          files_without_newline=""
          for file in "${changed_files[@]}"; do
            if [ -f "$file" ] && [ "$(tail -c 1 "$file" | wc -l)" -eq 0 ]; then
              files_without_newline+="- ${file}\n"  # 포맷을 맞추기 위해 파일 이름을 백틱으로 감쌉니다.
            fi
          done
          if [ -n "$files_without_newline" ]; then
            echo "Files without newline at end:"
            echo -e "$files_without_newline"
            echo "files<<EOF" >> $GITHUB_OUTPUT
            echo -e "$files_without_newline" >> $GITHUB_OUTPUT
            echo "EOF" >> $GITHUB_OUTPUT
            exit 1
          fi

      - name: Set Job Summary
        if: always()
        run: |
          if [ -n "${{ steps.newline-check.outputs.files }}" ]; then
            echo "아래 파일들에 공백 줄을 추가해주세요." >> $GITHUB_STEP_SUMMARY
            echo -e "${{ steps.newline-check.outputs.files }}" >> $GITHUB_STEP_SUMMARY
          else
            echo "모든 파일이 올바르게 개행 처리되어 있습니다." >> $GITHUB_STEP_SUMMARY
          fi