python-to-oas_gds.yml

name: Run Python Files

on:
  workflow_dispatch:
  push:
    paths:
      - "submissions/KLayout Python/**.py"
    branches:
      - '**'
  pull_request:
    paths:
      - "submissions/KLayout Python/**.py"
    branches:
      - '**'

jobs:
  run-python:
    runs-on: ubuntu-latest

    steps:
      - name: checkout repo content
        uses: actions/checkout@v2
        with:
          fetch-depth: 0

        # can also specify python version if needed
      - name: setup python
        uses: actions/setup-python@v4

      - name: install python packages
        run: |
          python -m pip install --upgrade pip
          pip install klayout SiEPIC siepic_ebeam_pdk
          python -m pip install --upgrade SiEPIC

      - name: run python scripts and get output gds / oas file
        run: |

          # get added/modified py files
          if [ "${{ github.event_name }}" == "push" ]; then
            FILES=$(git diff --name-only --diff-filter=ACM ${{ github.event.before }} ${{ github.sha }} -- "submissions/KLayout Python" | grep -E '\.py$' | sed 's|^submissions/KLayout Python/||')
          else
            FILES=$(git diff --name-only --diff-filter=ACM FETCH_HEAD -- "submissions/KLayout Python" | grep -i -E '\.py$' | sed 's|^submissions/KLayout Python/||')
          fi
          

          echo "Added / modified Python files; $FILES"

          # delete .oas and .gds files in the runner's submissions folder
          # this is needed in the case where someone already has file_name.gds and is now trying to generate file_name.oas (or vice versa)
          rm -rf submissions/*.gds submissions/*.oas

          IFS=$'\n'
        
          OUTPUT_FILES=""
          
          for file in $FILES; do

            echo "Getting oas/gds output for $file"

            # run file and generate a gds / oas output
            python "submissions/KLayout Python/$file" 
            # Lukas: for some reason, the "submissions/KLayout" part was showing up twice, and now it isn't.
            # python "$file" 

            # get output and save to OUTPUT_FILES
            gds_files=$(find submissions -type f -name "*.gds" -exec basename {} .gds \;)
            oas_files=$(find submissions -type f -name "*.gds" -exec basename {} .oas \;)

            file_name=$(basename "$file")
            file_name_no_py=$(basename "$file_name" .py)

            output_files=""
            if echo "$gds_files" | grep -q "$file_name_no_py"; then
              output_file="${file_name_no_py}.gds"
            else
              output_file="${file_name_no_py}.oas"
            fi

            OUTPUT_FILES+="$output_file "

            echo "Done for $file"

          done

          echo "output files; $OUTPUT_FILES"

          echo "OUTPUT_FILES=$OUTPUT_FILES" >> $GITHUB_ENV

      - name: move oas and gds files to a new folder
        run: |
          mkdir -p python_to_oas_gds

          for file in $OUTPUT_FILES; do
            cp "submissions/$file" python_to_oas_gds/
          done
      
      - name: upload .oas and .gds as an artifact
        uses: actions/upload-artifact@v4
        with:
          name: python-to-oas-gds
          path: python_to_oas_gds/

      - name: commit outputted oas and gds files into repository
        run: |
          git config --local user.email "${{ github.actor }}@users.noreply.github.com"
          git config --local user.name "${{ github.actor }}"

          # git add all produced oas/gds files
          for file in $OUTPUT_FILES; do
            git add "submissions/$file"
            echo "done: git add $file"
          done

          git commit -m "Add oas and gds files produced from .py files" 
          echo "done: git commit"
          git push
          echo "done: git push"
        if: github.event_name != 'pull_request'