run-yaml-verification.yml

name: Run YAML verification

on:
  workflow_dispatch:
  workflow_run:
    workflows: ["Run Python Files"]
    types:
      - completed
  push:
    paths:
      - 'submissions/**.yaml'
    branches:
      - '**'
  pull_request:
    paths:
      - 'submissions/**.yaml'
    branches:
      - '**'


jobs:
  verification:
    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 PyYAML
          
      - name: get .yaml files, run verification
        id: run-script
        run: |
        
          if [ "${{ github.event_name }}" = "pull_request" ]; then
            # triggered on pull request, get all changed / added files from forked repo
            export FILES=$(git diff --name-only --diff-filter=ACM FETCH_HEAD | grep -E '\.(yaml|yml)$' | sed 's|^submissions/||')
          else
            # triggered push, locate the changed / added .yaml files in the submission folder
            export FILES=$(git diff --name-status --diff-filter=ACM --relative=submissions ${{ github.event.before }} ${{ github.sha }} submissions | grep -E '\.(yaml|yml)$' | awk '{print $2}')
          fi
          IFS=$'\n'
          
          # print the names of the files
          echo "Files for verification; $FILES"

          files_with_errors=""
        
          # run verification on all files
          for file in $FILES; do

            echo "Running verification on $file"

            output=$(python run_yaml_verification.py "submissions/$file")
            
            echo $output  >> $GITHUB_STEP_SUMMARY

            # get number of errors
            #errors_from_output=$(echo "$output" | tail -n 1)

            #echo "$errors_from_output errors detected for $file"

            # if file results in verification errors add to string files_with_errors
            #if [[ "$errors_from_output" -ge 1 ]]; then
            #  files_with_errors+="$file, $errors_from_output errors. "
            #fi

            echo "Done verification on $file"
          done

          echo "files_with_errors=$files_with_errors" >> $GITHUB_ENV

      - name: fail if there are errors from verification
        run: |
          if [ -z "$files_with_errors" ]; then
            echo "No errors detected."
            echo "No errors detected." >> $GITHUB_STEP_SUMMARY
          else
            echo "Errors detected: $files_with_errors" 
            echo "Errors detected: $files_with_errors" >> $GITHUB_STEP_SUMMARY

            exit 1
          fi