name: Licence-date-verification
on:
  pull_request:
    branches:
      - master
      
env:
  EXTENSIONS: "c h cpp py go sh"
jobs:
  verify-date:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.1.0
        with:
          fetch-depth: 0
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v18.2
        with:
          files_ignore: '.github/**'
      - name: List all changed files
        run: |
          files_to_check=(${{ steps.changed-files.outputs.added_files }})
          files_to_check+=(${{ steps.changed-files.outputs.modified_files }})

          for FILE in ${files_to_check[@]}; do
            REGEX=".*\.(.*)"
            if [[  "$FILE" =~ $REGEX ]]
            then
                EXTENSION=${BASH_REMATCH[1]}
                EXTENSIONS_LIST=($EXTENSIONS)
                if [[ " ${EXTENSIONS_LIST[*]} " =~ " ${EXTENSION} " ]]
                then
                    .github/verify_header.sh $FILE
                fi
            fi
          done