define with source or template

gistfile1.txt

define clever-file (
  $source,
  $ensure = 'present',
) {

  case $source {
    /^puppet:/: {
      $is_source = true
      $is_template = false
    }
    default: {
      $is_source = false
      $is_template = true
    }
  }

  file { "${name}":
    ensure    => $ensure,
    source    => $is_source ? {
      'true'   => $source,
       default  => undef,
    },
    content   => $is_template ? {
      'true'  => $source,
      default => undef,
    },
  }
}