"""分析编排器 ``AnalysisOrchestrator``（intent-understanding-layer 任务 11）。

协调「理解 → 确认 → 分析」两阶段流程（design.md「4. AnalysisOrchestrator」）：

- Phase A：:meth:`build_task_sheet` 调用理解层产出《分析任务单》（不触达 ``compute``）。
- Phase B：:meth:`run_confirmed` 接收**用户已确认**的任务单，经 :meth:`Router.route_from_sheet`
  路由后，把任务单挂到 ``RawInput.extra["task_sheet"]`` 交由固定 ``Pipeline`` 执行。

合规保证（Property 5 / 需求 1.3、5.4、6.2）：``compute`` 只能经 :meth:`run_confirmed`
触达，而后者要求传入一份非澄清态任务单；澄清态 / 路由失败时**短路返回**澄清说明，
绝不进入流水线。审计在确认执行时记录（需求 8.2 / 9.4）。
"""

from __future__ import annotations

import logging
from typing import TYPE_CHECKING, Any, Optional

from .pipeline import Pipeline
from .router import Router
from .skill_base import RawInput, ReportSections
from .task_sheet import AnalysisTaskSheet
from .understanding import UnderstandingLayer

if TYPE_CHECKING:  # pragma: no cover - 仅类型检查
    from .registry import SkillRegistry
    from .services import Services

logger = logging.getLogger(__name__)


class AnalysisOrchestrator:
    """两阶段分析编排：理解（Phase A）→ 用户确认 → 分析（Phase B）。"""

    def __init__(self, registry: "SkillRegistry", svc: "Services") -> None:
        self.registry = registry
        self.svc = svc
        self.router = Router(registry, svc)

    # ------------------------------------------------------------------
    # Phase A：理解
    # ------------------------------------------------------------------
    def build_task_sheet(self, raw: RawInput) -> AnalysisTaskSheet:
        """运行理解层产出《分析任务单》（不进行任何分析数值计算，Property 4）。"""
        return UnderstandingLayer(self.svc).understand(raw)

    # ------------------------------------------------------------------
    # Phase B：分析（仅在用户确认后调用）
    # ------------------------------------------------------------------
    def run_confirmed(
        self,
        sheet: AnalysisTaskSheet,
        raw: RawInput,
        *,
        pipeline: Optional[Pipeline] = None,
        user: str = "anonymous",
    ) -> ReportSections:
        """执行已确认任务单对应的分析。

        前置：``sheet`` 必须为**非澄清态**（澄清态直接返回澄清说明，Property 5）。
        路由失败（需用户选择）同样短路返回，不进入流水线。
        """
        # 澄清态：不得进入流水线（需求 6.2 / Property 5）。
        if sheet is None or sheet.needs_clarification():
            return self._clarification_sections(sheet)

        decision = self.router.route_from_sheet(sheet)
        if decision.needs_user_choice or decision.skill is None:
            return ReportSections(
                sections={
                    "clarification": {
                        "reason": "需要用户选择分析功能",
                        "detail": decision.reason,
                    }
                }
            )

        raw2 = self._attach_confirmed_payload(raw, sheet)
        self._audit_confirm(user, decision.skill.meta.id, sheet)

        pipeline = pipeline or Pipeline()
        return pipeline.run(decision.skill, raw2, self.svc)

    # ------------------------------------------------------------------
    @staticmethod
    def _attach_confirmed_payload(raw: RawInput, sheet: AnalysisTaskSheet) -> RawInput:
        """把已确认任务单写入 ``RawInput.extra["task_sheet"]``（不改契约）。"""
        extra = dict(getattr(raw, "extra", None) or {})
        extra["task_sheet"] = sheet.to_dict()
        return RawInput(
            smiles=getattr(raw, "smiles", "") or "",
            excipient=getattr(raw, "excipient", "") or "",
            goal=getattr(raw, "goal", "") or "",
            files=list(getattr(raw, "files", None) or []),
            extra=extra,
        )

    @staticmethod
    def _clarification_sections(sheet: Optional[AnalysisTaskSheet]) -> ReportSections:
        clar = getattr(sheet, "clarification", None) if sheet else None
        return ReportSections(
            sections={
                "clarification": {
                    "reason_code": getattr(clar, "reason_code", "") if clar else "",
                    "message_key": getattr(clar, "message_key", "") if clar else "",
                    "options": list(getattr(clar, "options", []) or []) if clar else [],
                }
            }
        )

    def _audit_confirm(self, user: str, skill_id: str, sheet: AnalysisTaskSheet) -> None:
        audit = getattr(self.svc, "audit", None)
        recorder = getattr(audit, "record_analysis", None) or getattr(audit, "record_event", None)
        if callable(recorder):
            try:
                recorder(user or "anonymous", skill_id, step="confirmed_task_sheet")
            except TypeError:
                try:
                    recorder("confirm", skill_id, sheet.intent.value)
                except Exception:  # noqa: BLE001
                    logger.debug("编排器确认审计失败（已忽略）。", exc_info=True)
            except Exception:  # noqa: BLE001 - 审计失败不影响主流程
                logger.debug("编排器确认审计失败（已忽略）。", exc_info=True)


__all__ = ["AnalysisOrchestrator"]