# ai-robot-MCA - Progress

> 多渠道适配主框架架构改造进度文档
> 遵循 `docs/session-handoff-protocol.md` 协议

---

## 📋 Context

- module: `ai-robot`
- feature: `MCA` (Multi-Channel Adapter)
- status: 🔄 进行中

---

## 🔗 Spec References (SSOT)

- agents: `AGENTS.md`
- contracting: `spec/contracting.md`
- requirements: `spec/ai-robot/requirements.md`
- openapi_provider: `spec/ai-robot/openapi.provider.yaml`
- openapi_deps: `spec/ai-robot/openapi.deps.yaml`
- design: `spec/ai-robot/design.md`
- tasks: `spec/ai-robot/tasks.md`

---

## 📊 Overall Progress (Phases)

- [x] Phase 1: 基础设施 (100%) ✅ [tasks.md: TASK-001 ~ TASK-005]
- [x] Phase 2: 渠道适配层 (100%) ✅ [tasks.md: TASK-010 ~ TASK-013]
- [x] Phase 3: 消息路由层 (100%) ✅ [tasks.md: TASK-020 ~ TASK-023]
- [ ] Phase 4: AI 服务客户端 (0%) ⏳ [tasks.md: TASK-030 ~ TASK-033]
- [ ] Phase 5: 集成测试 (0%) ⏳ [tasks.md: TASK-040 ~ TASK-042]

---

## 🔄 Current Phase

### Goal
完成 AI 服务 DTO 定义、AiServiceClient 实现、熔断与降级、清理旧代码。

### Sub Tasks
- [ ] TASK-030: 定义 AI 服务 DTO ⏳ [AC-MCA-04-REQ, AC-MCA-05]
- [ ] TASK-031: 实现 AiServiceClient ⏳ [AC-MCA-04, AC-MCA-05]
- [ ] TASK-032: 实现熔断与降级 ⏳ [AC-MCA-06, AC-MCA-07]
- [ ] TASK-033: 删除旧 AiService ⏳

### Next Action (Must be Specific)

**Immediate**: 创建 `ChatRequest.java`、`ChatResponse.java` AI 服务 DTO。

**Details**:
1. file: `src/main/java/com/wecom/robot/dto/ai/ChatRequest.java`
2. action: 定义 ChatRequest DTO，包含 sessionId、currentMessage、channelType、history 字段
3. reference:
   - `spec/ai-robot/design.md` 第 6.1 节（AI 服务调用）
   - `spec/ai-robot/openapi.deps.yaml`（AI 服务契约）
4. constraints:
   - 字段与 openapi.deps.yaml 一致
   - 包含映射方法 (InboundMessage → ChatRequest)
   - 代码/注释必须包含 [AC-MCA-04-REQ] 标注

---

## 🏗️ Technical Context

### Module Structure (Only What Matters)

```
src/main/java/com/wecom/robot/
├── dto/
│   ├── InboundMessage.java      # TASK-001 ✅
│   ├── OutboundMessage.java     # TASK-001 ✅
│   ├── SignatureInfo.java       # TASK-001 ✅
│   └── ai/
│       ├── ChatRequest.java     # TASK-030
│       └── ChatResponse.java    # TASK-030
├── config/
│   ├── AiServiceConfig.java     # TASK-002 ✅
│   └── ChannelConfig.java       # TASK-002 ✅
├── adapter/
│   ├── ChannelAdapter.java      # TASK-010 ✅
│   ├── ServiceStateCapable.java # TASK-010 ✅
│   ├── TransferCapable.java     # TASK-010 ✅
│   ├── MessageSyncCapable.java  # TASK-010 ✅
│   ├── WeChatAdapter.java       # TASK-011 ✅
│   └── ChannelAdapterFactory.java # TASK-012 ✅
├── service/
│   ├── MessageRouterService.java      # TASK-020 ✅
│   ├── AiServiceClient.java           # TASK-031
│   └── impl/
│       ├── MessageRouterServiceImpl.java # TASK-021 ✅
│       └── AiServiceClientImpl.java      # TASK-031
├── util/
│   └── IdempotentHelper.java    # TASK-005 ✅
└── entity/
    └── Session.java             # TASK-003 ✅
```

### Key Decisions (Why / Impact)

- decision: 统一消息模型 (InboundMessage/OutboundMessage)
  reason: 实现渠道无关的消息处理，Controller 层负责验签/解析，Router 层处理统一消息
  impact: 后续新增渠道只需实现 ChannelAdapter，无需修改核心路由逻辑

- decision: 使用 Resilience4j 实现熔断
  reason: 与 Spring Boot 2.7 兼容良好，支持断路器、限流、超时
  impact: AI 服务调用具备熔断/降级能力，提升系统稳定性

- decision: 内部字段统一用 `content`，AI 服务契约用 `currentMessage`
  reason: 保持内部命名一致性，映射在 AiServiceClient 层处理
  impact: 避免后续 DTO 命名混乱

- decision: ChannelAdapter 接口分离为核心能力和可选能力
  reason: 不同渠道支持的能力不同，接口分离允许按需实现
  impact: WeChatAdapter 实现全部接口，其他渠道可按需实现

### Code Snippets (Reference)

```java
// ChannelAdapter 接口定义 (design.md 3.1)
public interface ChannelAdapter {
    String getChannelType();
    boolean sendMessage(OutboundMessage message);
}

// MessageRouterService 接口定义 (design.md 3.2)
public interface MessageRouterService {
    void processInboundMessage(InboundMessage message);
    void routeBySessionState(Session session, InboundMessage message);
    void dispatchToAiService(Session session, InboundMessage message);
    void dispatchToManualCs(Session session, InboundMessage message);
    void dispatchToPendingPool(Session session, InboundMessage message);
}
```

---

## 🧾 Session History

### Session #3 (2026-02-24)
- completed:
  - TASK-010: 定义 ChannelAdapter 接口 ✅
  - TASK-011: 实现 WeChatAdapter ✅
  - TASK-012: 创建 ChannelAdapterFactory ✅
  - TASK-013: 重构 WecomCallbackController ✅
  - TASK-022: 重构 MessageProcessService ✅
- changes:
  - 新增 src/main/java/com/wecom/robot/adapter/ChannelAdapter.java
  - 新增 src/main/java/com/wecom/robot/adapter/ServiceStateCapable.java
  - 新增 src/main/java/com/wecom/robot/adapter/TransferCapable.java
  - 新增 src/main/java/com/wecom/robot/adapter/MessageSyncCapable.java
  - 新增 src/main/java/com/wecom/robot/adapter/WeChatAdapter.java
  - 新增 src/main/java/com/wecom/robot/adapter/ChannelAdapterFactory.java
  - 更新 src/main/java/com/wecom/robot/controller/WecomCallbackController.java
  - 更新 src/main/java/com/wecom/robot/service/MessageProcessService.java
- commits: 4e9c5ba, 2631c53, 07561fe

### Session #2 (2026-02-24)
- completed:
  - TASK-020: 定义 MessageRouterService 接口
  - TASK-021: 实现 MessageRouterServiceImpl
  - 创建 `src/main/java/com/wecom/robot/service/MessageRouterService.java`
  - 创建 `src/main/java/com/wecom/robot/service/impl/MessageRouterServiceImpl.java`
  - 实现 5 个核心方法：processInboundMessage, routeBySessionState, dispatchToAiService, dispatchToManualCs, dispatchToPendingPool
  - 实现幂等性检查（基于 Redis SETNX）
- changes:
  - 新增 src/main/java/com/wecom/robot/service/MessageRouterService.java
  - 新增 src/main/java/com/wecom/robot/service/impl/MessageRouterServiceImpl.java
  - 更新 docs/progress/ai-robot-mca-progress.md
  - 更新 spec/ai-robot/tasks.md
- commits: b9792c8, 0b6fcf5

### Session #2 (2026-02-24)
- completed:
  - TASK-020: 定义 MessageRouterService 接口
  - TASK-021: 实现 MessageRouterServiceImpl
  - TASK-022: 重构 MessageProcessService
  - TASK-023: 更新 SessionManagerService 支持 channelType
  - 创建 `src/main/java/com/wecom/robot/service/MessageRouterService.java`
  - 创建 `src/main/java/com/wecom/robot/service/impl/MessageRouterServiceImpl.java`
  - 更新 Session 实体添加 channelType 字段
  - 更新 SessionManagerService 支持按渠道类型创建和筛选会话
  - 实现 5 个核心方法：processInboundMessage, routeBySessionState, dispatchToAiService, dispatchToManualCs, dispatchToPendingPool
  - 实现幂等性检查（基于 Redis SETNX）
- changes:
  - 新增 src/main/java/com/wecom/robot/service/MessageRouterService.java
  - 新增 src/main/java/com/wecom/robot/service/impl/MessageRouterServiceImpl.java
  - 更新 src/main/java/com/wecom/robot/service/MessageProcessService.java
  - 更新 src/main/java/com/wecom/robot/entity/Session.java
  - 更新 src/main/java/com/wecom/robot/service/SessionManagerService.java
  - 更新 docs/progress/ai-robot-mca-progress.md
  - 更新 spec/ai-robot/tasks.md
- commits: b9792c8, 0b6fcf5, db378af, a8d7474

### Session #1 (2026-02-24)
- completed:
  - 创建 spec/ai-robot/ 目录结构
  - 编写 requirements.md (v0.2.0)
  - 编写 openapi.deps.yaml (L0)
  - 编写 openapi.provider.yaml (L0)
  - 编写 design.md (v0.2.0)
  - 编写 tasks.md (20 个任务)
  - 所有规范文件已提交到 Git
- changes:
  - 新增 spec/ai-robot/requirements.md
  - 新增 spec/ai-robot/openapi.deps.yaml
  - 新增 spec/ai-robot/openapi.provider.yaml
  - 新增 spec/ai-robot/design.md
  - 新增 spec/ai-robot/tasks.md

---

## 🚀 Startup Guide

1. 读取本进度文档，定位当前 Phase 与 Next Action。
2. 打开并阅读 Spec References 指向的模块规范（requirements/openapi/design/tasks）。
3. 直接执行 Next Action（TASK-030: 创建 ChatRequest/ChatResponse DTO）。
4. 每完成一个子任务，更新本进度文档并提交 Git。