fortran-formatting.yaml

name: Codee format Fortran

on:
  pull_request:
    branches: [develop]
    types: [opened, synchronize, labeled, unlabeled]

env:
  CODEE_VERSION: 2025.4.5

permissions:
  contents: write
  pull-requests: write

jobs:
  format:
    name: Check and fix Fortran formatting
    runs-on: ubuntu-22.04

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

      - name: Get modified Fortran files
        #id: modified-files
        run: |
          git remote -v show
          git fetch origin ${{ github.base_ref }}
          MODIFIED_FILES=$(git diff --name-only --diff-filter=d origin/${{ github.base_ref }}...HEAD -- '*.f90' '*.F90' '*.f' '*.F')
          echo "MODIFIED_FILES=${MODIFIED_FILES}" >> ${GITHUB_ENV}

      - name: Install Codee
        if: env.MODIFIED_FILES != ''
        run: |
          echo "Installing Codee ${CODEE_VERSION} ..."
          wget https://codee.com/release/codee-${CODEE_VERSION}-linux-x86_64.tar.gz
          tar -xf codee-${CODEE_VERSION}-linux-x86_64.tar.gz

      - name: Run `codee format` on modified files
        if: env.MODIFIED_FILES != ''
        run: |
          export PATH="${PWD}/codee-${CODEE_VERSION}-linux-x86_64/bin:${PATH}"
          codee format --accept-eula --verbose ${MODIFIED_FILES}
          REFORMATTED_FILES=$(git diff --name-only --diff-filter=d)
          echo "REFORMATTED_FILES=${REFORMATTED_FILES}" >> ${GITHUB_ENV}

      - name: Fail if there are uncommitted changes and the `fix-fortran-format` label is not present
        if: ${{ env.REFORMATTED_FILES != '' && !contains(github.event.pull_request.labels.*.name, 'fix-fortran-format') }}
        run: |
          echo "Formatting issues detected. Run 'codee format' locally or attach label 'fix-fortran-format' to this PR."
          exit 1

#      - name: Fix formatting if label 'fix-fortran-format; is present
#        if: ${{ env.MODIFIED_FILES != '' && contains(github.event.pull_request.labels.*.name, 'fix-fortran-format') }}
#        run: |
#          export PATH="${PWD}/codee-${CODEE_VERSION}-linux-x86_64/bin:${PATH}"
#          git codee-format --diff origin/${{ github.base_ref }} HEAD
#          git diff

      - name: Commit changes if the `fix-fortran-format` label is not present
        if: ${{ env.REFORMATTED_FILES != '' && contains(github.event.pull_request.labels.*.name, 'fix-fortran-format') }}
        run: |
          # Push with the github-actions user. More information at:
          # https://github.com/actions/checkout?tab=readme-ov-file#push-a-commit-using-the-built-in-token
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git checkout -b ${{ github.head_ref }}
          git add ${REFORMATTED_FILES}
          git commit -m "Apply codee format formatting fixes"
          echo "DH DEBUG: 'git push --set-upstream origin ${{ github.head_ref }}'"
          git push --set-upstream origin ${{ github.head_ref }}