name: Awesome CI Workflow
on: [push, pull_request]
permissions:
  contents: write

jobs:
  MainSequence:
    name: Code Formatter
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - uses: actions/setup-python@v4
      - name: requirements
        run: | 
          sudo apt-get -qq update
          sudo apt-get -qq install clang-tidy clang-format
        # checks are passing with less errors when used with this version. 
        # The default installs v6.0 which did not work out well in my tests
      - name: Setup Git Specs
        run: |
          git config --global user.name github-actions[bot]
          git config --global user.email 'github-actions@users.noreply.github.com'
      - name: Filename Formatter
        run: |
          wget https://raw.githubusercontent.com/TheAlgorithms/scripts/main/filename_formatter.sh
          chmod +x filename_formatter.sh
          ./filename_formatter.sh . .cpp,.hpp
      - name: Get file changes
        run: |
          git branch
          git diff --diff-filter=dr --name-only origin/master > git_diff.txt
          echo "Files changed-- `cat git_diff.txt`"
      - name: Configure for static lint checks
        # compiling first gives clang-tidy access to all the header files and settings used to compile the programs. 
        # This will check for macros, if any, on linux and not for Windows. But the use of portability checks should 
        # be able to catch any errors for other platforms.
        run: cmake -B build -S . -DCMAKE_EXPORT_COMPILE_COMMANDS=ON
      - name: Lint modified files
        shell: bash
        run: python3 scripts/file_linter.py
      - name: Commit and push changes
        run: |
          git diff DIRECTORY.md
          git commit -am "clang-format and clang-tidy fixes for ${GITHUB_SHA::8}" || true
          git push origin HEAD:$GITHUB_REF || true

  build:
    name: Compile checks
    runs-on: ${{ matrix.os }}
    needs: [MainSequence]
    permissions:
      pull-requests: write
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true
      - run: |
          cmake -B ./build -S .
          cmake --build build
      - name: Label on PR fail
        uses: actions/github-script@v6
        if: ${{ failure() && matrix.os == 'ubuntu-latest' && github.event_name == 'pull_request' }}
        with:
          script: |
            github.rest.issues.addLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: ['automated tests are failing']
            })