copyright_check.yml

---

name: copyright
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  copyright:
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v4
      - name: Run check
        run: |
          bash - << 'SCRIPT'

          # Get the current year
          current_year=$(date +"%Y")

          # Ignore files and directories
          ignore_files="(.git|node_modules|build|dist|temp|check_copyright.sh)"

          # Directory to search
          search_dir="."

          # Pattern to look for: 'Copyright (c)'
          pattern="Copyright (c)"

          exit_code=0

          # Find files containing the copyright notice
          echo "Checking files in $search_dir for outdated copyright years..."
          echo "Current year is $current_year."

          # Iterate over files, redirecting into while loop to avoid subshell
          find $search_dir -type f -print0 > tmp.$$ || exit 1
          while IFS= read -r -d $'\0' file; do
              # Skip files in the ignore list
              if [[ "$file" =~ $ignore_files ]]; then
                  continue
              fi

              # Use grep to find the line and awk to extract the year
              year_line=$(grep "$pattern" "$file")

              if [[ -n "$year_line" ]]; then
                  # Extract year assuming the year is after 'Copyright (c)'
                  year=$(echo "$year_line" | grep -E -oh "[0-9]{4}-[0-9]{4}")
                  year=$(echo "$year" | awk -F'-' '{print $2}')

                  # Check if the extracted year is not equal to the current year
                  if [[ "$year" -ne "$current_year" ]]; then
                      echo "Outdated copyright year ($year) in file: $file"
                      exit_code=1
                  fi
              fi
          done < tmp.$$
          rm tmp.$$  # Clean up temporary file

          echo "Check complete."
          exit $exit_code
          SCRIPT