module SimpleCov

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