name: Formatting

on:
  workflow_dispatch:
  pull_request:
    branches: [ main ]
    paths-ignore:
      - '.github/workflows/pull_*.yml'
      - '.github/workflows/linting.yml'
      - '.github/workflows/markdown_lint.yml'

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  cmake:
    runs-on: ubuntu-22.04

    steps:
    - uses: actions/checkout@v4

    - name: Extract branch name
      shell: bash
      run: |
        echo "branch=${GITHUB_HEAD_REF:-${GITHUB_HEAD_REF#refs/heads/}}" >> $GITHUB_OUTPUT
      id: extract_branch

    - name: Install dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y python3-pip
        python3 -m pip install -U cmake-format

    - name: Run cmake-format
      run: |
        set +e
        cmake-format -i $(find . -type f | egrep 'CMakeLists.txt|\.cmake$')
        if [ $(git diff | wc -l) -ne 0 ]; then
          echo -e "\nError! CMake code not formatted. Run cmake-format...\n"
          echo -e "\nFiles:\n"
          git diff --name-only
          echo -e "\nFull diff:\n"
          git diff
          exit 1
        fi

    - name: Create pull request
      if: failure()
      uses: peter-evans/create-pull-request@v5
      with:
        commit-message: "cmake formatting (cmake-format)"
        branch: ${{ steps.extract_branch.outputs.branch }}-cmake-format
        delete-branch: true
        title: "Format cmake code (via cmake-format) on ${{ steps.extract_branch.outputs.branch }}"
        base: ${{ steps.extract_branch.outputs.branch }}

  source:
    runs-on: ubuntu-22.04

    steps:
    - uses: actions/checkout@v4

    - name: Install dependencies
      run: |
        DISTRIB_CODENAME=$(cat /etc/lsb-release | grep DISTRIB_CODENAME | awk -F '=' '{print $NF}')
        sudo apt-get update
        sudo apt-get install -y software-properties-common wget curl clang-format-11

    - name: Extract branch name
      shell: bash
      run: |
        echo "branch=${GITHUB_HEAD_REF:-${GITHUB_HEAD_REF#refs/heads/}}" >> $GITHUB_OUTPUT
      id: extract_branch

    - name: Run clang-format
      run: |
        set +e
        FILES=$(find samples source tests -type f | egrep '\.(h|hpp|hh|c|cc|cpp)(|\.in)$')
        FORMAT_OUT=$(clang-format-11 -i ${FILES})
        if [ $(git diff | wc -l) -ne 0 ]; then
          echo -e "\nError! Code not formatted. Run clang-format (version 11)...\n"
          echo -e "\nFiles:\n"
          git diff --name-only
          echo -e "\nFull diff:\n"
          git diff
          exit 1
        fi

    - name: Create pull request
      if: failure()
      uses: peter-evans/create-pull-request@v5
      with:
        commit-message: "source formatting (clang-format v11)"
        branch: ${{ steps.extract_branch.outputs.branch }}-clang-format
        delete-branch: true
        title: "Format source code (via clang-format v11) on ${{ steps.extract_branch.outputs.branch }}"
        base: ${{ steps.extract_branch.outputs.branch }}

  python:
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        python-version: ['3.10']

    steps:
    - uses: actions/checkout@v4

    - name: Extract branch name
      shell: bash
      run: |
        echo "branch=${GITHUB_HEAD_REF:-${GITHUB_HEAD_REF#refs/heads/}}" >> $GITHUB_OUTPUT
      id: extract_branch

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v4
      with:
        python-version: ${{ matrix.python-version }}

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        python -m pip install black

    - name: black format
      run: |
        black .
        if [ $(git diff | wc -l) -ne 0 ]; then
          echo -e "\nError! Python code not formatted. Run black...\n"
          echo -e "\nFiles:\n"
          git diff --name-only
          echo -e "\nFull diff:\n"
          git diff
          exit 1
        fi

    - name: Create pull request
      if: failure()
      uses: peter-evans/create-pull-request@v5
      with:
        commit-message: "python formatting (black)"
        branch: ${{ steps.extract_branch.outputs.branch }}-python-format
        delete-branch: true
        title: "Format python code (via black) on ${{ steps.extract_branch.outputs.branch }}"
        base: ${{ steps.extract_branch.outputs.branch }}