342 lines
16 KiB
Python
342 lines
16 KiB
Python
"""Канал преподавателя: только передача.
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**Ни одной команды, меняющей карточку курсанта.** Преподаватель управляет
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ситуацией, а не работой обучаемого, иначе оценка перестаёт быть оценкой
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курсанта (docs/arch/CONTRACT.md).
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Ответы сюда не идут — канал односторонний. Всё, что сервер хочет сказать
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преподавателю, уходит на его же сокет `observe`.
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"""
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import logging
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import math
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from uuid import UUID, uuid4
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from fastapi import APIRouter, WebSocket, WebSocketDisconnect
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from pydantic import TypeAdapter, ValidationError
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from app.domain.events import (
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CallEndReason,
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CallEnded,
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ErrorEvent,
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ErrorKind,
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ScoreReady,
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CallIncoming,
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CardBriefing,
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Exercise,
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StationState,
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InstructorToServer,
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InstructorNoteShown,
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ModeSet,
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ReferenceStarted,
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SessionEnded,
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)
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import asyncio
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from app.dialog.factory import build_caller
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from app.dialog.director import apply as apply_directive
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from app.dialog.director import mood_of
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from app.dialog.persona import PersonaState
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from app.dialog.runtime import get_embedder
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from app.dialog.slots import SlotMachine
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from app.scenarios import store
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from app.api.auth import audit, principal_of
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from app.domain.roles import Role
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from app.session.hub import hub
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from app.session.state import SessionState, now_utc
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from app.session.dds import prepare_card
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from app.voice.models import get_voice_models
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from app.voice.pipeline import FILLERS, prefetch
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log = logging.getLogger(__name__)
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router = APIRouter()
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_adapter = TypeAdapter(InstructorToServer)
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def card_briefing(state: SessionState) -> CardBriefing:
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"""Учебная текстовая вводная — исходные реплики, а не эталон карточки.
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В отсутствие диалога факты раскрываются сразу. Если факт уточняется,
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показываем и уточнение: иначе правильно заполнить карточку невозможно.
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"""
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scenario = state.scenario
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lines = ["Учебная текстовая вводная: сведения заявителя приведены ниже.",
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scenario.first_line]
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for fact in scenario.facts:
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lines.append(f"• {fact.value}")
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if fact.refined:
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lines.append(f" Уточнено: {fact.refined}")
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return CardBriefing(
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scenario_id=scenario.id, mode=state.mode, text="\n".join(lines),
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required_fields=([field for field in state.required_fields if field != "dds"]
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if scenario.ground_truth.incident_code else list(state.required_fields)),
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card=state.kio,
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handoff_to_dds=state.handoff_to_dds,
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)
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async def _start(session_id: UUID, event, who=None) -> None:
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if event.handoff_to_dds and event.exercise is not Exercise.CARD:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.SCENARIO_INVALID,
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message="Передача в ДДС доступна только для текстовой карточки 112",
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))
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return
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scenario = store.get(event.scenario_id)
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if scenario is None:
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hub.to_observers(
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session_id,
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ErrorEvent(code=ErrorKind.SCENARIO_INVALID, message=f"Нет сценария {event.scenario_id}"),
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)
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return
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scenario_ids = event.scenario_ids or [event.scenario_id]
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if event.exercise is Exercise.DDS:
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if not scenario_ids or scenario_ids[0] != event.scenario_id or len(scenario_ids) > 10:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.SCENARIO_INVALID,
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message="Очередь ДДС должна начинаться с scenario_id и содержать не более 10 карточек",
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))
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return
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scenarios = [store.get(scenario_id) for scenario_id in scenario_ids]
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if any(item is None for item in scenarios):
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.SCENARIO_INVALID, message="В очереди ДДС есть неизвестный сценарий",
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))
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return
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else:
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scenarios = []
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attempt = 1
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recorded_trainee_id = event.trainee_id
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if hub.journal:
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attempt, recorded_trainee_id = await hub.journal.start_lesson(
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session_id, scenario.id, event.mode.value, event.trainee, event.trainee_id
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)
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# Занятие собирается целиком и только потом регистрируется: иначе
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# наблюдатель, подключившийся в эту щель, увидит полусобранное состояние
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# без слот-автомата и звонящего.
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state = SessionState(
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session_id=session_id,
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scenario_id=scenario.id,
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scenario_title=scenario.title,
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level=scenario.level.value,
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mode=event.mode,
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exercise=event.exercise,
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handoff_to_dds=event.handoff_to_dds,
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scenario=scenario.model_copy(deep=True),
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required_fields=scenario.required_fields,
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trainee_name=event.trainee,
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trainee_id=recorded_trainee_id,
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attempt=attempt,
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)
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if event.exercise is Exercise.CALL:
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embedder = get_embedder()
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if embedder is not None:
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state.slots = SlotMachine(state.scenario, embedder)
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state.persona = PersonaState(state.scenario.persona)
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state.caller = build_caller(scenario.id)
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elif event.exercise is Exercise.DDS:
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state.dds_scenarios = [item.model_copy(deep=True) for item in scenarios]
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prepare_card(state, state.dds_scenarios[0])
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state.started_at = state.dispatched_at
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else:
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state.started_at = now_utc()
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hub.register(state)
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if event.exercise is not Exercise.CALL and hub.journal and state.started_at is not None:
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await hub.journal.session_started(session_id, state.started_at)
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# Первая реплика и филлеры синтезируются, пока курсант не снял трубку:
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# «Алло! Помогите!» должно прозвучать мгновенно (docs/arch/BACKEND.md).
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if event.exercise is Exercise.CALL:
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models = get_voice_models()
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if models is not None:
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asyncio.create_task(prefetch(models, [scenario.first_line, *FILLERS.values()]))
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state.on_event("call.incoming")
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hub.start_ticker(session_id)
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if who is not None:
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# Запуск занятия меняет чужой результат — значит попадает в журнал
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# аудита (ТЗ, хранение не менее шести месяцев).
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asyncio.create_task(
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audit(who.login, who.role.value, "lesson.start", str(session_id),
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f"{scenario.id}, режим {event.mode.value}, курсант {event.trainee}")
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)
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if event.exercise is Exercise.CALL:
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hub.to_trainee(
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session_id,
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CallIncoming(
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scenario_id=scenario.id,
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caller_number="+7 (495) 000-00-00",
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level=scenario.level,
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mode=event.mode,
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required_fields=[field for field in scenario.required_fields
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if field != "dds" or not scenario.ground_truth.incident_code],
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),
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)
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elif event.exercise is Exercise.DDS:
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hub.to_station(session_id, state.card_received_event())
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hub.to_station(session_id, StationState(snapshot=state.station_snapshot()))
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else:
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hub.to_trainee(session_id, card_briefing(state))
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hub.to_observers(session_id, ModeSet(mode=event.mode))
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hub.to_observers(session_id, state.snapshot())
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async def _stop(session_id: UUID) -> None:
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state = hub.get(session_id)
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if state is None or state.ended:
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return
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state.ended_at = now_utc()
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state.end_reason = CallEndReason.INSTRUCTOR
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hub.stop_ticker(session_id)
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hub.to_observers(session_id, SessionEnded(reason=CallEndReason.INSTRUCTOR))
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if state.exercise in {Exercise.DDS, Exercise.CARD}:
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from app.session.finish import finish
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if state.exercise is Exercise.DDS or state.handoff_to_dds and state.dispatched_card is not None:
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hub.to_station(session_id, SessionEnded(reason=CallEndReason.INSTRUCTOR))
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else:
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hub.to_trainee(session_id, CallEnded(reason=CallEndReason.INSTRUCTOR))
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await finish(session_id, state)
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if state.exercise is Exercise.DDS or state.handoff_to_dds and state.dispatched_card is not None:
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hub.to_station(session_id, ScoreReady(session_id=session_id))
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if hub.journal:
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await hub.journal.session_ended(session_id, state.ended_at, CallEndReason.INSTRUCTOR.value)
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async def _reject(ws: WebSocket, message: str) -> None:
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"""Отказ до входа в цикл: сокет закрывается с объяснением, а не молча."""
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await ws.send_text(
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ErrorEvent(code=ErrorKind.FORBIDDEN, message=message).model_dump_json()
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)
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await ws.close()
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@router.websocket("/ws/control/{session_id}")
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async def control(ws: WebSocket, session_id: UUID) -> None:
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await ws.accept()
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# Пульт преподавателя: управление занятием доступно только ему.
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who = principal_of(ws)
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if who is None or who.role not in (Role.INSTRUCTOR,):
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await _reject(ws, "Недостаточно прав для этого экрана")
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return
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try:
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while True:
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payload = await ws.receive_json()
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try:
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event = _adapter.validate_python(payload)
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except ValidationError:
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hub.to_observers(
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session_id,
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ErrorEvent(code=ErrorKind.UNSUPPORTED_EVENT, message=str(payload)[:200]),
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)
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continue
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match event.type:
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case "scenario.start":
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await _start(session_id, event, who)
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case "session.stop":
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await _stop(session_id)
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case "instructor_note.add":
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state = hub.get(session_id)
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if state is not None:
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state.notes.append({
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"type": "instructor_note.shown",
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"transcript_ref": event.transcript_ref,
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"text": event.text,
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"author": "преподаватель",
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})
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hub.to_observers(
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session_id,
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InstructorNoteShown(
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transcript_ref=event.transcript_ref,
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text=event.text,
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author="преподаватель",
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),
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)
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if hub.journal:
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await hub.journal.note(
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session_id, event.transcript_ref, event.text, "преподаватель"
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)
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case "reference.play":
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state = hub.get(session_id)
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if state is not None:
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hub.to_observers(session_id, ReferenceStarted(scenario_id=state.scenario_id))
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case "score.override":
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if event.session_id != session_id:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.FORBIDDEN,
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message="Оценка относится к другому занятию",
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))
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continue
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state = hub.get(session_id)
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if state is not None and state.score is not None:
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try:
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verdict = float(event.verdict)
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except ValueError:
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verdict = float("nan")
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if not math.isfinite(verdict) or not 0 <= verdict <= 100:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message="Оценка должна быть числом от 0 до 100",
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))
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continue
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# Автооценка остаётся рядом: видно, что скорректировано и кем.
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state.score = {
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**state.score,
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"score_final": verdict,
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"overridden_by": who.login,
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"override_comment": event.comment,
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}
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if hub.journal:
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await hub.journal.score_override(
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session_id, verdict, who.login, event.comment
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)
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await audit(
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who.login, who.role.value, "score.override", str(session_id),
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f"{state.score.get('score_auto')} → {verdict}: {event.comment}",
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)
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hub.to_observers(session_id, ScoreReady(session_id=session_id))
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case "director.inject":
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state = hub.get(session_id)
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if state is None:
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continue
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if state.exercise is not Exercise.CALL:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message="Директивы звонящему доступны только в голосовом упражнении",
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))
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continue
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result = apply_directive(state, event.directive)
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if result.needs_network:
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hub.to_observers(session_id, ErrorEvent(
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code=ErrorKind.DIRECTIVE_NEEDS_NETWORK,
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message="Свободный текст требует LLM: офлайн доступны только кнопки",
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))
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continue
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state.directives.append(event.directive)
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voice = state.voice
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if result.drop_line and voice is not None:
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# Обрыв рвёт звук на полуслове тем же механизмом, что
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# перебивание, и запускает норматив обратного дозвона.
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voice.barge_in()
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if result.drop_line:
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state.on_event("call.dropped")
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hub.to_trainee(session_id, CallEnded(reason=CallEndReason.DROPPED))
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hub.to_observers(session_id, SessionEnded(reason=CallEndReason.DROPPED))
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elif result.say and voice is not None:
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voice.speak(result.say, mood_of(state))
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case _:
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hub.to_observers(
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session_id,
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ErrorEvent(
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code=ErrorKind.UNSUPPORTED_EVENT,
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message=f"{event.type} ещё не реализовано",
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),
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)
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except WebSocketDisconnect:
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return
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