class KPM::BaseArtifact

def skip_if_exists(artifact_info, coordinates, sha1_file)
  # Unclear if this is even possible
  return false if artifact_info[:sha1].nil?
  # Check entry in sha1_file if exists
  if sha1_file && File.exists?(sha1_file)
    sha1_checker = Sha1Checker.from_file(sha1_file)
    local_sha1 = sha1_checker.sha1(coordinates)
    return true if local_sha1 == artifact_info[:sha1]
  end
  # If not using sha1_file mechanism, exit early if file_path odes not exist or is a directory
  if !File.exists?(artifact_info[:file_path]) ||
      File.directory?(artifact_info[:file_path])
    return false
  end
  # Finally check if remote_sha1 matches what we have locally
  local_sha1 = Digest::SHA1.file(artifact_info[:file_path]).hexdigest
  local_sha1 == artifact_info[:sha1]
end