{
  "properties" : { },
  "id" : "2b3c4d5e6f748590a1b2c3d4e5f6789",
  "script" : null,
  "groupId" : "f8e3d2c1b0a94e5f8a7b6c5d4e3f2a1",
  "name" : "实时交易统计",
  "createTime" : 1780876800000,
  "updateTime" : 1780803706100,
  "lock" : null,
  "createBy" : "admin",
  "updateBy" : "admin",
  "path" : "/real-time-stats",
  "method" : "GET",
  "parameters" : [ {
    "name" : "dimension",
    "value" : null,
    "description" : "时间维度：day(当天)/week(近一周)/month(近一月)/year(当年)，不传则返回全部",
    "required" : false,
    "dataType" : "String",
    "type" : null,
    "defaultValue" : null,
    "validateType" : null,
    "error" : null,
    "expression" : null,
    "children" : null
  } ],
  "options" : [ ],
  "requestBody" : "",
  "headers" : [ ],
  "paths" : [ ],
  "responseBody" : null,
  "description" : "实时交易统计：牦牛交易总量、订单交易总量、销售商户数量、采购商户数量，按当天/近一周/近一月/当年统计（只读查询）",
  "requestBodyDefinition" : null,
  "responseBodyDefinition" : null
}
================================
// 只读统计已完成订单，不修改任何数据
var sql = """
SELECT
  dim,
  COALESCE(SUM(quantity), 0) AS yak_total_volume,
  COUNT(*) AS order_total_volume,
  COUNT(DISTINCT seller_id) AS seller_count,
  COUNT(DISTINCT buyer_id) AS buyer_count
FROM (
  SELECT 'day' AS dim, quantity, seller_id, buyer_id
  FROM yak_sn_order
  WHERE del_flag = '0'
    AND status = 'COMPLETED'
    AND transaction_time >= CURRENT_DATE
    AND transaction_time < CURRENT_DATE + INTERVAL '1 day'

  UNION ALL

  SELECT 'week' AS dim, quantity, seller_id, buyer_id
  FROM yak_sn_order
  WHERE del_flag = '0'
    AND status = 'COMPLETED'
    AND transaction_time >= CURRENT_DATE - INTERVAL '6 days'
    AND transaction_time < CURRENT_DATE + INTERVAL '1 day'

  UNION ALL

  SELECT 'month' AS dim, quantity, seller_id, buyer_id
  FROM yak_sn_order
  WHERE del_flag = '0'
    AND status = 'COMPLETED'
    AND transaction_time >= CURRENT_DATE - INTERVAL '29 days'
    AND transaction_time < CURRENT_DATE + INTERVAL '1 day'

  UNION ALL

  SELECT 'year' AS dim, quantity, seller_id, buyer_id
  FROM yak_sn_order
  WHERE del_flag = '0'
    AND status = 'COMPLETED'
    AND transaction_time >= DATE_TRUNC('year', CURRENT_DATE)
    AND transaction_time < CURRENT_DATE + INTERVAL '1 day'
) t
GROUP BY dim
ORDER BY dim
"""

var rows = db.select(sql)

var createEmptyStats = () => {
  return {
    yakTotalVolume: 0,
    orderTotalVolume: 0,
    sellerCount: 0,
    buyerCount: 0
  }
}

var result = {
  day: createEmptyStats(),
  week: createEmptyStats(),
  month: createEmptyStats(),
  year: createEmptyStats()
}

for (row in rows) {
  result[row.dim] = {
    yakTotalVolume: row.yakTotalVolume,
    orderTotalVolume: row.orderTotalVolume,
    sellerCount: row.sellerCount,
    buyerCount: row.buyerCount
  }
}

var dim = dimension
if (dim && result[dim]) {
  return result[dim]
}

return result