checkJSON.yml

name: Checking JSON using jsonlint

# Controls when the action will run. Triggers the workflow on push or pull request
# events but only for the master branch
on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
    # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
    - uses: actions/checkout@v2
    
    # Source: https://dev.to/flipp-engineering/linting-only-changed-files-with-github-actions-4ddp
    - name: Get file changes
      id: get_file_changes
      uses: trilom/file-changes-action@v1.2.3
      with:
        output: ' '

    - name: echo changed files echo
      run: |
        echo Changed files: ${{ steps.get_file_changes.outputs.files_added }} ${{ steps.get_file_changes.outputs.files_modified }}

    # Runs a single command using the runners shell
    - name: Check the JSONs
      id: checkJSON
      run: | 
        JSON_FILES=$(find ${{ steps.get_file_changes.outputs.files_added }} ${{ steps.get_file_changes.outputs.files_modified }}  -type f -name "*.json" )
        echo JSON files to be processed: ${JSON_FILES} 
        if [ "${JSON_FILES}" != "" ]; then
           sudo apt-get update
           sudo apt-get install jsonlint
           jsonlint-php ${JSON_FILES}
           python3 scripts/checkJSONConsistency.py ${JSON_FILES}
           result=$(cat error.log)
           result="${result//'%'/'%25'}"
           result="${result//$'\n'/'%0A'}"
           result="${result//$'\r'/'%0D'}" 
           echo ::set-output name=result::$result
        fi

    - name: Add comment on PR
      uses: peter-evans/create-or-update-comment@v1
      if: ${{ steps.checkJSON.outputs.result }} 
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        issue-number: ${{ github.event.pull_request.number }}
        body: |
          Oops.. We have spotted some issues in your JSON file:
          
          ```
          ${{ steps.checkJSON.outputs.result }}
          ```
        reaction-type: 'rocket'

    - name: Forcing failure upon JSON errors
      if: ${{ steps.checkJSON.outputs.result }} 
      run: exit 42