const QUALITY_REFUND_STAGE_META = Object.freeze({
  1: Object.freeze({ label: '处于同行后10%', status: 'red', severity: 3 }),
  2: Object.freeze({ label: '处于同行后30%', status: 'yellow', severity: 2 }),
  3: Object.freeze({ label: '已超越30%同行', status: 'green', severity: 1 }),
  4: Object.freeze({ label: '已超越50%同行', status: 'green', severity: 1 }),
});

const STATUS_LABELS = Object.freeze({
  red: '红灯',
  yellow: '黄灯',
  green: '绿灯',
});

function resolveQualityRefundStage(value) {
  const stage = Number(value);
  const meta = QUALITY_REFUND_STAGE_META[stage];
  return meta ? { stage, ...meta } : null;
}

function resolveQualityRefundSignal(_secondaryStage, mainCategoryStage) {
  const mainCategory = resolveQualityRefundStage(mainCategoryStage);

  if (!mainCategory) {
    return {
      status: '',
      secondaryLabel: '',
      tertiaryLabel: '',
      mainCategoryLabel: '',
      reason: '',
    };
  }

  return {
    status: mainCategory.status,
    secondaryLabel: '',
    tertiaryLabel: '',
    mainCategoryLabel: mainCategory.label,
    reason: `近30天品质退款率主营类目${mainCategory.label}，显示${STATUS_LABELS[mainCategory.status]}`,
  };
}

module.exports = {
  QUALITY_REFUND_STAGE_META,
  resolveQualityRefundSignal,
  resolveQualityRefundStage,
};