module SimpleCov

def result_exit_status(result, covered_percent)
  covered_percentages = result.covered_percentages.map { |percentage| percentage.round(2) }
  if covered_percent < SimpleCov.minimum_coverage
    $stderr.printf("Coverage (%.2f%%) is below the expected minimum coverage (%.2f%%).\n", covered_percent, SimpleCov.minimum_coverage)
    SimpleCov::ExitCodes::MINIMUM_COVERAGE
  elsif covered_percentages.any? { |p| p < SimpleCov.minimum_coverage_by_file }
    $stderr.printf("File (%s) is only (%.2f%%) covered. This is below the expected minimum coverage per file of (%.2f%%).\n", result.least_covered_file, covered_percentages.min, SimpleCov.minimum_coverage_by_file)
    SimpleCov::ExitCodes::MINIMUM_COVERAGE
  elsif (last_run = SimpleCov::LastRun.read)
    coverage_diff = last_run["result"]["covered_percent"] - covered_percent
    if coverage_diff > SimpleCov.maximum_coverage_drop
      $stderr.printf("Coverage has dropped by %.2f%% since the last time (maximum allowed: %.2f%%).\n", coverage_diff, SimpleCov.maximum_coverage_drop)
      SimpleCov::ExitCodes::MAXIMUM_COVERAGE_DROP
    else
      SimpleCov::ExitCodes::SUCCESS
    end
  else
    SimpleCov::ExitCodes::SUCCESS
  end
end