# 用户使用流程图 — AI助手

```mermaid
flowchart TD
    %% ============ 颜色定义 ============
    classDef actor fill:#e1f5fe,stroke:#0288d1,stroke-width:2px
    classDef action fill:#fff3e0,stroke:#f57c00,stroke-width:1px
    classDef system fill:#e8f5e9,stroke:#388e3c,stroke-width:1px
    classDef decision fill:#fce4ec,stroke:#d32f2f,stroke-width:1px
    classDef role fill:#f3e5f5,stroke:#7b1fa2,stroke-width:1px
    classDef endpoint fill:#f5f5f5,stroke:#616161,stroke-width:1px,shape:box

    subgraph AI聊天
        A1(("用户")) --> A2[发送聊天消息 /chat/send]
        A2 --> A3{消息类型}
        A3 -->|普通咨询| A4[Dify AI 响应]
        A3 -->|报告解读| A5[传入reportId]
        A5 --> A6[AI解读健康报告指标]
        A4 --> A7[返回AI回答]
        A6 --> A7
    end

    subgraph 会话管理
        A7 --> B1[获取会话列表 /chat/conversations]
        B1 --> B2[获取消息历史 /chat/messages]
        B2 --> B3[删除会话 /chat/conversations/{id}/delete]
    end

    subgraph AI营养分析
        B3 --> C1[发送营养分析 /nutrition/send]
        C1 --> C2[基于菌群报告]
        C2 --> C3[AI生成营养建议]
    end

    subgraph AI管家
        C3 --> D1[创建新会话 /sessions/create]
        D1 --> D2[更新Dify会话ID /sessions/update-conversation]
        D2 --> D3[归档会话 /sessions/archive]
        D3 --> D4[获取会话列表 /sessions/list]
        D4 --> D5[会话详情 /sessions/detail]
        D5 --> D6[删除会话 /sessions/delete]
    end

    subgraph AI上下文
        D6 --> E1[供LangGraph调用的上下文 /api/ai/context]
    end

    subgraph AI推荐
        E1 --> F1[按标签搜索推荐 /recommend/search]
        F1 --> F2[获取复购提醒 /recommend/repurchase-reminders]
        F2 --> F3[标记提醒已点击 /repurchase-reminder/{id}/click]
    end

    R1(("👤 用户")):::actor
    R2(("🤖 Dify AI引擎")):::system

    A1 -.- R1
    A4 -.- R2
```

## 端点明细

| 端点 | 说明 |
|------|------|
| `/api/ai/chat/send` | 发送聊天消息 |
| `/api/ai/chat/conversations` | 会话列表 |
| `/api/ai/chat/messages` | 消息历史 |
| `/api/ai/chat/conversations/{id}/delete` | 删除会话 |
| `/api/ai/nutrition/send` | 营养分析消息 |
| `/api/ai/butler/sessions/create` | 创建AI管家会话 |
| `/api/ai/butler/sessions/update-conversation` | 更新会话ID |
| `/api/ai/butler/sessions/archive` | 归档会话 |
| `/api/ai/butler/sessions/list` | 会话列表 |
| `/api/ai/butler/sessions/detail` | 会话详情 |
| `/api/ai/butler/sessions/delete` | 删除会话 |
| `/api/ai/context` | AI上下文数据 |
| `/api/recommend/search` | 营养标签搜索 |
| `/api/recommend/repurchase-reminders` | 复购提醒 |
| `/api/recommend/repurchase-reminder/{id}/click` | 标记已点击 |
| `/api/feedback/today` | 获取今日AI反馈 |
| `/api/feedback/read` | 标记已读 |
| `/api/feedback/recent` | 最近反馈列表 |