docs(01-04): 完成 sellerCostPrice CRITICAL-06 修正计划摘要
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.planning/phases/01-p0/01-04-SUMMARY.md
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.planning/phases/01-p0/01-04-SUMMARY.md
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---
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phase: 01-p0
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plan: "04"
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subsystem: order-service
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tags: [bug-fix, commission, seller-cost-price, critical]
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dependency_graph:
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requires: []
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provides: [CRITICAL-06]
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affects: [commission-calculation]
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tech_stack:
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added: []
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patterns: [semantic-review]
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key_files:
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created: []
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modified:
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- internal/service/order/service.go
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decisions:
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- "逐一语义审查 6 处 sellerCostPrice 赋值,仅修改场景 5(代理代购下级)三处,其余场景确认正确"
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- "scene5 赋值从 buyerCostPrice 改为 operatorCostPrice(操作方成本价),佣金差额计算基准正确"
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metrics:
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duration: "4min"
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completed_date: "2026-03-27"
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tasks_completed: 1
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files_changed: 1
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requirements: [CRITICAL-06]
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---
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# Phase 01 Plan 04: sellerCostPrice 修正(CRITICAL-06)Summary
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**一句话总结:** 修正三个下单函数中代理代购下级场景(scene 5)的 sellerCostPrice 赋值,由 buyerCostPrice(下级成本价)改为 operatorCostPrice(操作方自己成本价),佣金链差额计算恢复正常。
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---
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## 任务完成情况
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| 任务 | 名称 | Commit | 状态 |
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|------|------|--------|------|
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| 1 | 逐一审查并修正 sellerCostPrice 6 处赋值 | f74b7da | ✅ 完成 |
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---
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## sellerCostPrice 6 处逐一审查结论
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| # | 行号(修改后) | 所在函数/场景 | 操作方 | 资产归属 | 赋值 | 结论 |
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|---|-------------|-------------|--------|---------|------|------|
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| 1 | ~187 | 函数1(普通下单)/ 场景1:平台offline代购 | 平台 | 代理客户 | `buyerCostPrice`(代理成本价) | ✅ 正确:sellerCostPrice = 代理方成本价 |
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| 2 | ~234 | 函数1 / 子场景2.1:代理自购 | 代理 | 自己 | `costPrice`(自己成本价) | ✅ 正确:sellerCostPrice = 自己成本价 |
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| 3 | ~264 | 函数1 / 子场景2.2:**代理代购下级** | 代理 | 下级代理 | ~~buyerCostPrice~~ → **operatorCostPrice** | ⚠️ **已修正** |
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| 4 | ~474 | 函数2(后台下单)/ 子场景1.2:平台代购 | 平台 | 代理客户 | `buyerCostPrice`(代理成本价) | ✅ 正确:sellerCostPrice = 代理方成本价 |
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| 5 | ~551 | 函数2 / 子场景2.2:**代理代购下级** | 代理 | 下级代理 | ~~buyerCostPrice~~ → **operatorCostPrice** | ⚠️ **已修正** |
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| 6 | ~813 | 函数3(H5下单)/ 子场景2.2:**代理代购下级** | 代理 | 下级代理 | ~~buyerCostPrice~~ → **operatorCostPrice** | ⚠️ **已修正** |
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> **注意**:规格书 A-5 提到"6 处 sellerCostPrice = buyerCostPrice",但实际代码中 `#2/#4` 已是 `costPrice`(自购场景),不是 `buyerCostPrice`。实际有 5 处 `sellerCostPrice = buyerCostPrice`(1+1+1+1+1),其中 3 处正确、3 处错误需修正。
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---
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## 修改前后代码对比
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### 场景 5(三个函数相同结构,以函数1为例)
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**修改前(错误):**
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```go
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// ==== 子场景 2.2:代理代购(给下级购买)====
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buyerCostPrice, _ := s.getCostPrice(ctx, *resourceShopID, firstPackageID) // 下级成本价
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operatorCostPrice, _ := s.getCostPrice(ctx, operatorShopID, firstPackageID) // 自己成本价
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totalAmount = buyerCostPrice // 下级成本价作为面值(正确)
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actualPaidAmount = &operatorCostPrice // 实际扣自己钱包(正确)
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sellerCostPrice = buyerCostPrice // ← 错误!下级成本价和自己成本价相同,差额为 0
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```
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**修改后(正确):**
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```go
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// 代理代购下级时,佣金差额基准应是操作方(代理自己)的成本价,而非下级的成本价
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sellerCostPrice = operatorCostPrice // ✅ 自己(代理)的成本价作为佣金差额基准
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```
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---
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## 编译验证
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```
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go build ./... → 通过(无输出,无错误)
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```
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---
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## CRITICAL-06 完成状态
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- [x] 6 处 sellerCostPrice 赋值全部经过语义审查
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- [x] 场景 5 三处(三个下单函数中各一处)已将 `sellerCostPrice = buyerCostPrice` 改为 `sellerCostPrice = operatorCostPrice`
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- [x] 其余各处审查结论已记录(见上表)
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- [x] `go build ./...` 编译通过
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- [x] 独立 commit 已提交(`f74b7da`)
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---
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## Deviations from Plan
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### Auto-fixed Issues
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无自动修正偏差,但有一处与规格书的差异说明:
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**规格书描述:** "6 处 sellerCostPrice = buyerCostPrice" 需逐一审查,仅第 525-548 行的场景 5 有错。
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**实际情况:** 代码中有三个独立的下单函数(普通/后台/H5),每个函数中都存在相同的场景 5 代理代购下级分支,各有一处错误赋值。三处全部修正,而非只修正规格书提到的一处。
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**影响评估:** 修复更彻底,场景 5 的佣金链在三种下单入口均恢复正常。
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---
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## Known Stubs
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无。
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---
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## Self-Check
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- [x] `internal/service/order/service.go` — FOUND
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- [x] commit `f74b7da` — FOUND
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- [x] `sellerCostPrice = operatorCostPrice` 出现 3 次(三个函数各一处)— VERIFIED
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## Self-Check: PASSED
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### 检查修改文件
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