"""百工与司命 API（契约词典 §5.9 pivot=capability_registry）。

- 能力目录与调用：GET/POST /capabilities、POST /capabilities/{id}/invoke；
- 授契与行契：GET/POST /mandates、DELETE /mandates/{id}（撤销立即生效）；
- 请命：GET /petitions、POST /petitions/{id}/approve|deny（超时=拒绝执行 HJ-1302）；
- 行动账：GET /tool-calls（净化摘要+观察标证）。
"""

from datetime import datetime

from fastapi import APIRouter, Depends, Request, status
from pydantic import BaseModel, Field

from app.api.v1.deps import get_current_user
from app.domains.baigong import service
from app.schemas.auth import CurrentUser

cap_router = APIRouter(prefix="/capabilities", tags=["baigong"])
mandate_router = APIRouter(prefix="/mandates", tags=["baigong"])
petition_router = APIRouter(prefix="/petitions", tags=["baigong"])
ledger_router = APIRouter(prefix="/tool-calls", tags=["baigong"])


class InvokeRequest(BaseModel):
    params: dict = Field(default_factory=dict, description="能力参数。")
    run_id: str | None = None
    character_id: str | None = None
    trace_id: str | None = None
    confirmed: bool = Field(default=False, description="请命批准后的当次执行回执。")


class CreateCapabilityRequest(BaseModel):
    name: str = Field(min_length=1, max_length=120)
    description: str = ""
    executor_type: str = Field(description="builtin / qiankun / mcp / http")
    executor_ref: str = ""
    params_schema: dict = Field(default_factory=dict)
    risk_dims: dict = Field(default_factory=dict)
    data_scope: str = ""
    destinations: str = ""
    consent_mode: str = "allow"
    source: str = "user_custom"


class GrantMandateRequest(BaseModel):
    capability_id: str
    kind: str = Field(default="grant", description="grant 授契 / charter 行契")
    character_id: str | None = None
    scope: dict = Field(default_factory=dict)
    budget_total: int = Field(default=1, ge=0)
    expires_at: datetime | None = None


# ── 能力目录 ──


@cap_router.get("")
async def list_capabilities(user: CurrentUser = Depends(get_current_user)) -> list[dict]:
    return await service.list_capabilities(user.owner_scope)


@cap_router.post("", status_code=status.HTTP_201_CREATED)
async def create_capability(
    payload: CreateCapabilityRequest, user: CurrentUser = Depends(get_current_user)
) -> dict:
    import json

    from app.db.session import AsyncSessionLocal
    from app.domains.baigong.models import Capability

    if payload.executor_type not in ("builtin", "qiankun", "mcp", "http"):
        from app.core.errors import AppError

        raise AppError("invalid_request", "executor_type 须为 builtin/qiankun/mcp/http")
    async with AsyncSessionLocal() as session:
        cap = Capability(
            name=payload.name,
            owner_scope=user.owner_scope,
            description=payload.description,
            executor_type=payload.executor_type,
            executor_ref=payload.executor_ref,
            params_schema_json=json.dumps(payload.params_schema, ensure_ascii=False),
            risk_dims_json=json.dumps(payload.risk_dims, ensure_ascii=False),
            data_scope=payload.data_scope,
            destinations=payload.destinations,
            consent_mode=payload.consent_mode,
            source=payload.source,
        )
        session.add(cap)
        try:
            await session.commit()
        except Exception as exc:  # noqa: BLE001
            from app.core.errors import AppError

            await session.rollback()
            raise AppError("invalid_request", f"能力登记失败（名称重复？）：{exc}") from None
        return {"id": cap.id, "name": cap.name, "status": "registered"}


@cap_router.post("/{capability_id}/invoke")
async def invoke_capability(
    capability_id: str,
    payload: InvokeRequest,
    request: Request,
    user: CurrentUser = Depends(get_current_user),
) -> dict:
    return await service.invoke(
        request,
        capability_id,
        payload.params,
        user=user,
        run_id=payload.run_id,
        character_id=payload.character_id,
        trace_id=payload.trace_id,
        confirmed=payload.confirmed,
    )


# ── 授契与行契 ──


@mandate_router.get("")
async def list_mandates(user: CurrentUser = Depends(get_current_user)) -> list[dict]:
    return await service.list_mandates(user.owner_scope)


@mandate_router.post("", status_code=status.HTTP_201_CREATED)
async def grant_mandate(
    payload: GrantMandateRequest, user: CurrentUser = Depends(get_current_user)
) -> dict:
    return await service.grant_mandate(
        user.owner_scope,
        capability_id=payload.capability_id,
        kind=payload.kind,
        character_id=payload.character_id,
        scope=payload.scope,
        budget_total=payload.budget_total,
        expires_at=payload.expires_at,
    )


@mandate_router.delete("/{mandate_id}", status_code=status.HTTP_204_NO_CONTENT)
async def revoke_mandate(
    mandate_id: str, user: CurrentUser = Depends(get_current_user)
) -> None:
    await service.revoke_mandate(user.owner_scope, mandate_id)


# ── 请命 ──


@petition_router.get("")
async def list_petitions(user: CurrentUser = Depends(get_current_user)) -> list[dict]:
    return await service.list_petitions()


@petition_router.post("/{petition_id}/approve")
async def approve_petition(
    petition_id: str, user: CurrentUser = Depends(get_current_user)
) -> dict:
    return await service.resolve_petition(petition_id, approved=True)


@petition_router.post("/{petition_id}/deny")
async def deny_petition(petition_id: str, user: CurrentUser = Depends(get_current_user)) -> dict:
    return await service.resolve_petition(petition_id, approved=False)


# ── 行动账 ──


@ledger_router.get("")
async def list_tool_calls(
    user: CurrentUser = Depends(get_current_user), limit: int = 100
) -> list[dict]:
    return await service.list_tool_calls(user.owner_scope, limit=limit)


routers = [cap_router, mandate_router, petition_router, ledger_router]