74 lines
3.4 KiB
Plaintext
74 lines
3.4 KiB
Plaintext
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%% REQ-坐席-010 AI回复三态开关 — 时序图②：路径B 员工发消息在三态下的门控与推送分支
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%% （时序图①「坐席切换 mode 调用链」见 技术方案-REQ-坐席-010-AI回复三态开关.md §4.1）
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%% 架构师 高见远（Gao） 2026-08-04
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sequenceDiagram
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autonumber
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actor Emp as 员工(H5)
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participant H5 as api/h5.py<br/>send_message
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participant DB as conversations / messages
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participant Gate as ai_reply_gate
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participant Task as tasks/h5_ai_task.py<br/>process_h5_ai_reply
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participant Dify as Dify
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participant WS as ws_manager
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actor AgentUI as 坐席工作台
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Emp->>H5: POST /api/h5/.../messages {content}
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H5->>DB: 查/建 conversation（新建 status=ai_handling）
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H5->>DB: INSERT message(sender_type=employee)
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H5->>WS: broadcast(new_message, sender=employee)
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WS-->>AgentUI: 员工消息（不受本开关影响，始终可见）
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H5->>DB: COMMIT（保证后台任务读得到）
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rect rgb(255, 244, 230)
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Note over H5,Gate: 门控必须在 asyncio.create_task 之前（h5.py:939 / ws.py:472）
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H5->>Gate: can_ai_auto_reply_path_b(conversation)
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Gate->>Gate: status in {ai_handling, queued}?<br/>AND ai_reply_mode != "off"?
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end
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alt mode == "off"
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Gate-->>H5: False
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H5->>H5: logger.info("AI自动回复已关闭，跳过")
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H5-->>Emp: 200 {user_message, ai_reply:null}
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Note over Task: 后台任务从未创建 → 零 DB session / 零 Dify 调用
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else status == "serving"（本次修复的缺口）
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Gate-->>H5: False
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H5->>H5: logger.info("坐席已接管，跳过AI自动回复")
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H5-->>Emp: 200 {user_message, ai_reply:null}
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Note over AgentUI: 坐席独占对话，AI 不再抢话（PRD G2 / US2）
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else 允许触发
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Gate-->>H5: True
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H5->>Task: asyncio.create_task(process_h5_ai_reply(...))
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H5-->>Emp: 200（立即返回，AI 回复走 WS 异步推）
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Task->>DB: _step_load_conversation
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Task->>Dify: _step_call_dify
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Note over Task,WS: ai_thinking 坐席广播（h5_ai_task.py:1603）<br/>同样受 should_push_to_agent 门控
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Task->>Gate: should_push_to_agent(conversation)
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alt mode == employee_and_agent
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Task->>WS: broadcast(ai_thinking)
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WS-->>AgentUI: AI 思考中…
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end
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Dify-->>Task: AIReplyResult
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Task->>DB: _persist_and_push*：INSERT message(sender_type=ai)
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Task->>WS: broadcast_to_employees([emp], ai_reply)
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WS-->>Emp: AI 回复（三态下只要触发就必推员工）
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rect rgb(232, 245, 233)
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Note over Task,Gate: 坐席广播门控（4 处：L482 / L749 / L891 / L1603）
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Task->>Gate: should_push_to_agent(conversation)
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end
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alt mode == "employee_and_agent"
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Gate-->>Task: True
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Task->>WS: broadcast(new_message, sender_type=ai)
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Task->>WS: broadcast(conversation_updated)
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WS-->>AgentUI: 坐席同步看到 AI 回复内容（P0-7 / US3）
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else mode == "employee_only"（默认）
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Gate-->>Task: False
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Note over Task,AgentUI: 行为变更：不再广播坐席<br/>员工-AI 会话对坐席不可见
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end
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end
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Note over H5,Task: ADR-6：切 off / 转 serving 不 cancel 已提交的在途 task，<br/>让其自然结束（PRD P1-4，避免半截消息）
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