# TODOS

重構 cursor-api-proxy → go-zero + DDD Architecture 的待辦事項。

---

## Phase 1: API 定義與骨架生成

### DONE
- [x] 建立 `api/chat.api` 定義檔
- [x] 建立 `etc/chat.yaml` 配置檔
- [x] 生成代碼骨架
- [x] 移動 `chat.go` 到 `cmd/chat/`

### TODO

#### TODO-1: 全局變數遷移清單
- **What**: 建立全局變數到 ServiceContext 的遷移清單
- **Why**: 現有代碼有多個全局變數，遷移時容易遺漏
- **Files**:
  - `internal/pool/pool.go:36-38` → `globalPool`, `globalMu` → ServiceContext
  - `internal/process/process.go:117` → `MaxModeFn` → ServiceContext
  - `internal/handlers/chat.go:28-29` → `rateLimitRe`, `retryAfterRe` → ServiceContext 或常數
  - `internal/models/cursormap.go:8,47,51` → 正則表達式常數化
- **Decision**: ServiceContext 注入
- **Effort**: human ~2h / CC ~30min
- **Depends on**: Phase 2 (Domain 層建立)
- **Status**: pending

#### TODO-2: go.mod 更新
- **What**: 添加 go-zero 依賴到 go.mod
- **Why**: 現有 go.mod 沒有 go-zero 依賴
- **Command**: `go get github.com/zeromicro/go-zero@latest`
- **Decision**: 使用最新穩定版
- **Effort**: human ~5min / CC ~1min
- **Depends on**: Phase 1 開始前
- **Status**: pending

#### TODO-3: Makefile 更新
- **What**: 更新 Makefile 以支援 go-zero 的建置流程
- **Why**: 需要新增 goctl 命令和整合現有 env/run 命令
- **Commands to add**:
  ```makefile
  .PHONY: api
  api:
      goctl api go -api api/chat.api -dir . --style go_zero

  .PHONY: api-doc
  api-doc:
      goctl api doc -api api/chat.api -dir docs/

  .PHONY: gen
  gen: api
      go mod tidy
  ```
- **Decision**: 需要追蹤
- **Effort**: human ~30min / CC ~10min
- **Depends on**: Phase 1 (API 定義與骨架生成)
- **Status**: pending

---

## Phase 2: Domain 層建立

### DONE
- [ ] 建立 `pkg/domain/entity/`
- [ ] 建立 `pkg/domain/repository/`
- [ ] 建立 `pkg/domain/usecase/`
- [ ] 建立 `pkg/domain/const/`

### TODO

#### TODO-4: import 循環依賴檢測
- **What**: 在每個 Phase 完成後執行 `go build ./...` 檢測循環依賴
- **Why**: DDD 架構分層容易產生循環依賴
- **Potential cycles**:
  - `pkg/usecase` ↔ `pkg/domain/usecase`
  - `pkg/repository` ↔ `pkg/domain/repository`
- **Command**: `go build ./... && go test ./... -run=none`
- **Depends on**: 每個 Phase 完成後
- **Status**: pending

---

## Phase 8: Internal 層重組

### DONE
- [ ] 更新 `internal/config/config.go`
- [ ] 建立 `internal/svc/servicecontext.go`
- [ ] 建立 `internal/logic/`
- [ ] 建立 `internal/handler/`
- [ ] 建立 `internal/middleware/`

### TODO

#### TODO-5: SSE 整合測試
- **What**: 增加 SSE streaming 的端對端測試
- **Why**: SSE 是核心功能，自訂 handler 容易出錯，沒有測試覆蓋
- **Test cases**:
  1. SSE streaming 請求正常返回
  2. SSE client disconnect 正確處理
  3. SSE timeout 正確處理
  4. 非串流請求轉 SSE 格式
- **Implementation**:
  ```go
  // tests/integration/sse_test.go
  func TestSSEStreaming(t *testing.T) {
      // 使用 httptest 模擬 SSE 客戶端
      // 驗證 data: [DONE] 正確返回
  }
  ```
- **Decision**: 使用 `rest.WithCustom` 路由
- **Effort**: human ~2h / CC ~30min
- **Depends on**: Phase 8 完成（Internal 層重組）
- **Status**: pending

#### TODO-6: SSE Handler 實作
- **What**: 使用 `rest.WithCustom` 實作 SSE streaming handler
- **Why**: go-zero 標準 handler 不支援 SSE，需要自訂
- **Implementation**:
  ```go
  // internal/handler/chat_handler.go
  func NewChatHandler(svcCtx *svc.ServiceContext) http.HandlerFunc {
      return func(w http.ResponseWriter, r *http.Request) {
          // SSE 設定
          w.Header().Set("Content-Type", "text/event-stream")
          w.Header().Set("Cache-Control", "no-cache")
          w.Header().Set("Connection", "keep-alive")
          
          // 委託給 usecase
          svcCtx.ChatUsecase.Stream(r.Context(), input, callback)
      }
  }
  ```
- **Decision**: 使用 `rest.WithCustom` 路由
- **Effort**: human ~2h / CC ~30min
- **Depends on**: Phase 6 (Usecase 層建立)
- **Status**: pending

---

## Phase 10: 清理與測試

### DONE
- [ ] 移除舊目錄
- [ ] 更新 import 路徑
- [ ] 執行測試

### TODO

#### TODO-7: 測試文件遷移
- **What**: 測試文件跟隨源碼遷移到 pkg/
- **Why**: 測試應該與源碼在同一目錄
- **Files to migrate**:
  - `internal/httputil/httputil_test.go` → `pkg/infrastructure/httputil/`
  - `internal/config/config_test.go` → `internal/config/` (保留)
  - `internal/sanitize/sanitize_test.go` → `pkg/usecase/`
  - `internal/models/cursormap_test.go` → `pkg/domain/const/`
  - `internal/models/cursorcli_test.go` → `pkg/domain/const/`
  - `internal/parser/stream_test.go` → `pkg/infrastructure/parser/`
  - `internal/env/env_test.go` → `pkg/infrastructure/env/`
  - `internal/winlimit/winlimit_test.go` → `pkg/infrastructure/winlimit/`
  - `internal/anthropic/anthropic_test.go` → `pkg/adapter/anthropic/`
  - `internal/pool/pool_test.go` → `pkg/repository/`
  - `internal/openai/openai_test.go` → `pkg/adapter/openai/`
  - `internal/process/process_test.go` → `pkg/infrastructure/process/`
- **Decision**: 測試遷移到 pkg/
- **Effort**: human ~1h / CC ~10min
- **Depends on**: Phase 3-7 完成
- **Status**: pending

#### TODO-8: ServiceContext 單例 Pool
- **What**: AccountPool 使用單例模式，透過 sync.Once 確保只初始化一次
- **Why**: 避免每次請求創建新 Pool 的開銷
- **Implementation**:
  ```go
  // pkg/repository/account.go
  var (
      globalPool     *AccountPool
      globalPoolOnce sync.Once
  )
  
  func GetAccountPool(configDirs []string) *AccountPool {
      globalPoolOnce.Do(func() {
          globalPool = NewAccountPool(configDirs)
      })
      return globalPool
  }
  ```
- **Decision**: 使用單例 Pool
- **Effort**: human ~30min / CC ~10min
- **Depends on**: Phase 4 (Repository 層實作)
- **Status**: pending

---

## Phase 獨立 TODO

### TODO-9: 回歸測試自動化
- **What**: 建立自動化回歸測試腳本
- **Why**: 確保每次遷移後功能正常
- **Script**:
  ```bash
  # scripts/regression-test.sh
  #!/bin/bash
  set -e
  
  echo "=== Health check ==="
  curl -s http://localhost:8080/health | jq .
  
  echo "=== Models list ==="
  curl -s http://localhost:8080/v1/models | jq .
  
  echo "=== Chat completion (non-streaming) ==="
  curl -s -X POST http://localhost:8080/v1/chat/completions \
    -H "Content-Type: application/json" \
    -d '{"model":"test","messages":[{"role":"user","content":"hi"}],"stream":false}' | jq .
  
  echo "=== Chat completion (streaming) ==="
  curl -s -X POST http://localhost:8080/v1/chat/completions \
    -H "Content-Type: application/json" \
    -d '{"model":"test","messages":[{"role":"user","content":"hi"}],"stream":true}'
  ```
- **Depends on**: Phase 10 完成
- **Status**: pending

---

## Summary

| TODO | Phase | Effort | Status |
|------|-------|--------|--------|
| TODO-1: 全局變數遷移清單 | Phase 2 | 2h | pending |
| TODO-2: go.mod 更新 | Phase 1 | 5min | pending |
| TODO-3: Makefile 更新 | Phase 1 | 30min | pending |
| TODO-4: import 循環依賴檢測 | Each Phase | 5min | pending |
| TODO-5: SSE 整合測試 | Phase 8 | 2h | pending |
| TODO-6: SSE Handler 實作 | Phase 8 | 2h | pending |
| TODO-7: 測試文件遷移 | Phase 10 | 1h | pending |
| TODO-8: ServiceContext 單例 Pool | Phase 4 | 30min | pending |
| TODO-9: 回歸測試自動化 | Phase 10 | 30min | pending |

---

## Dependencies Graph

```
Phase 1 (API 定義)
    │
    ├── TODO-2: go.mod 更新 (必须在開始前完成)
    ├── TODO-3: Makefile 更新
    │
    ▼
Phase 2 (Domain 層)
    │
    ├── TODO-1: 全局變數遷移清單
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 3 (Infrastructure 層)
    │
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 4 (Repository 層)
    │
    ├── TODO-8: ServiceContext 單例 Pool
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 5 (Provider 層)
    │
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 6 (Usecase 層)
    │
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 7 (Adapter 層)
    │
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 8 (Internal 層)
    │
    ├── TODO-5: SSE 整合測試
    ├── TODO-6: SSE Handler 實作
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 9 (CLI 工具)
    │
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
Phase 10 (清理與測試)
    │
    ├── TODO-7: 測試文件遷移
    ├── TODO-9: 回歸測試自動化
    ├── TODO-4: import 循環依賴檢測
    │
    ▼
完成
```

---

**文件版本**: v1.0
**建立日期**: 2026-04-03
**最後更新**: 2026-04-03