{
  "properties" : { },
  "id" : "7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2",
  "script" : null,
  "groupId" : "f8e3d2c1b0a94e5f8a7b6c5d4e3f2a1",
  "name" : "牦牛销售类型统计",
  "createTime" : 1780880400000,
  "updateTime" : null,
  "lock" : null,
  "createBy" : "admin",
  "updateBy" : "admin",
  "path" : "/yak-sales-type-stats",
  "method" : "GET",
  "parameters" : [ ],
  "options" : [ ],
  "requestBody" : "",
  "headers" : [ ],
  "paths" : [ ],
  "responseBody" : null,
  "description" : "牦牛销售类型统计：按订单 purpose 归类为屠宰/养殖/其他，统计已完成订单牦牛头数与占比（只读）。",
  "requestBodyDefinition" : null,
  "responseBodyDefinition" : null
}
================================
// 只读查询，不修改任何数据
// 数据源 yak_sn_order.purpose，按用途关键词归类

var sql = """
SELECT category AS name, COALESCE(SUM(quantity), 0) AS value
FROM (
  SELECT
    o.quantity,
    CASE
      WHEN TRIM(COALESCE(o.purpose, '')) ~* '(屠宰|餐饮|肉食|宰杀)' THEN '屠宰用途'
      WHEN TRIM(COALESCE(o.purpose, '')) ~* '(养殖|繁育|种|批发|转售)' THEN '养殖用途'
      ELSE '其他用途'
    END AS category
  FROM yak_sn_order o
  WHERE o.del_flag = '0'
    AND o.status = 'COMPLETED'
) t
GROUP BY category
"""

var rows = db.select(sql)
var categories = ['屠宰用途', '养殖用途', '其他用途']
var valueMap = {}

for (row in rows) {
  valueMap[row.name] = row.value ? row.value : 0
}

var total = 0
for (cat in categories) {
  var count = valueMap[cat] ? valueMap[cat] : 0
  total = total + count
}

var result = []
for (cat in categories) {
  var count = valueMap[cat] ? valueMap[cat] : 0
  var percent = 0
  if (total > 0) {
    percent = (count * 100.0) / total
  }
  result.push({
    name: cat,
    value: count,
    percent: percent
  })
}

return result