check_plagiarism.yml

name: Plagiarism Checker

on:
  pull_request:
    paths:
      - "games/**/*.js"

jobs:
  plagiarism-check:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.10'

      - name: Install Compare50 && beautifulsoup4
        run: pip install compare50 beautifulsoup4

      - name: Get list of changed files
        id: changed-files
        run: |
          echo "Pull Request Base SHA: ${{ github.event.pull_request.base.sha }}"
          echo "Pull Request Head SHA: ${{ github.event.pull_request.head.sha }}"
          git diff --name-only --diff-filter=AM --find-renames --find-copies ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} | grep 'games/.*\.js$' | xargs
          js_files=$(git diff --name-only --diff-filter=AM --find-renames --find-copies ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} | grep 'games/.*\.js$' | xargs)
          echo "FILES=$js_files" >> $GITHUB_ENV

      - name: Run Plagiarism Detection Script
        if: env.FILES != ''
        run: python .github/scripts/plagiarism_check.py "${{ env.FILES }}" games output_dir saved_dir

      - name: Extract and Display Similarity Percentages
        run: python .github/scripts/extract_percentages.py saved_dir/
        id: extract-percentages

      - name: Upload Compare50 Results as Artifacts
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: compare50-results
          path: saved_dir/

      - name: Save PR number to file
        if: always()
        run: echo ${{ github.event.pull_request.number }} > pr_number.txt

      - name: Upload PR Number as Artifact
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: pr-number
          path: pr_number.txt

      - name: Upload Plagiarism Report as Artifact
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: plagiarism-report
          path: plagiarism-report.md

      - name: Check for High Plagiarism Percentages
        if: always() && steps.extract-percentages.outcome == 'failure'
        run: echo "Plagiarism percentage over threshold detected."