"""下单任务网关路由

承担规格 §4 的全部接口：

- POST /api/orders              上游提交下单意图（幂等）
- GET  /api/orders/lease        本地长轮询领取
- POST /api/orders/{id}/renew   续租
- POST /api/orders/{id}/report  本地回报状态
- POST /api/orders/{id}/reclaim 把 stale 任务重新租给 worker（绝不自动重投）
- GET  /api/orders/{id}         任务详情 + 完整状态历史
- GET  /api/orders              任务列表（运维与上游对账）

handler 风格与 app/scraping/api/routes/scrape.py 保持一致：不在 handler 里写
try/except，业务异常通过 AppError 自动套进 register_exception_handlers。
"""
from __future__ import annotations

from fastapi import APIRouter, Depends, Query

from app.gateway.container import GatewayContainer
from app.gateway.models import (
    LeaseData,
    RenewData,
    ReclaimData,
    ReportData,
    SubmitOrderData,
    SubmitOrderRequest,
    TaskDetail,
    TaskListData,
    RenewRequest,
    ReclaimRequest,
    ReportRequest,
)
from app.shared.api import ApiResponse, get_container, require_bearer_token

router = APIRouter(prefix="/api/orders", tags=["orders"])


@router.post(
    "",
    response_model=ApiResponse[SubmitOrderData],
    dependencies=[Depends(require_bearer_token)],
)
async def submit_order(
    payload: SubmitOrderRequest,
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[SubmitOrderData]:
    """上游提交下单意图

    重复提交同一 task_id 不新建任务，返回既有任务且 created=false——上游重发
    不会变成两单。
    """
    data = await container.task_queue.submit(
        task_id=payload.task_id, site=payload.site, intent=payload.intent
    )
    return ApiResponse[SubmitOrderData](
        success=True, msg="success", data=data, code=0
    )


@router.get(
    "/lease",
    response_model=ApiResponse[LeaseData | None],
    dependencies=[Depends(require_bearer_token)],
)
async def lease_order(
    worker_id: str = Query(...),
    wait: int = Query(default=30, ge=0, le=300),
    site: str | None = Query(default=None),
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[LeaseData | None]:
    """本地长轮询领取

    无可领任务时挂起到 wait 秒后返回 data: null，HTTP 仍 200。已有 leased/running
    任务时立即返回空（全局并发度 1）。
    """
    data = await container.task_queue.lease(
        worker_id=worker_id,
        wait=wait,
        site=site,
        max_wait=container.settings.lease_max_wait_seconds,
    )
    return ApiResponse[LeaseData | None](
        success=True, msg="success", data=data, code=0
    )


@router.post(
    "/{task_id}/renew",
    response_model=ApiResponse[RenewData],
    dependencies=[Depends(require_bearer_token)],
)
async def renew_order(
    task_id: str,
    payload: RenewRequest,
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[RenewData]:
    """续租。worker 在长任务中每 60 秒调一次，避免租约 TTL 误判"""
    data = await container.task_queue.renew(task_id, payload.worker_id)
    return ApiResponse[RenewData](success=True, msg="success", data=data, code=0)


@router.post(
    "/{task_id}/report",
    response_model=ApiResponse[ReportData],
    dependencies=[Depends(require_bearer_token)],
)
async def report_order(
    task_id: str,
    payload: ReportRequest,
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[ReportData]:
    """本地回报订单状态

    同一 (task_id, state) 重复上报幂等。terminal=true 时释放租约并推到终态。
    """
    data = await container.task_queue.report(
        task_id,
        worker_id=payload.worker_id,
        state=payload.state,
        payable_yen=payload.payable_yen,
        pay_deadline=payload.pay_deadline,
        site_order_id=payload.site_order_id,
        evidence_ref=payload.evidence_ref,
        detail=payload.detail,
        terminal=payload.terminal,
        terminal_status=payload.terminal_status.value if payload.terminal_status else None,
    )
    return ApiResponse[ReportData](success=True, msg="success", data=data, code=0)


@router.post(
    "/{task_id}/reclaim",
    response_model=ApiResponse[ReclaimData],
    dependencies=[Depends(require_bearer_token)],
)
async def reclaim_order(
    task_id: str,
    payload: ReclaimRequest,
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[ReclaimData]:
    """把 stale 任务重新租给 worker（恢复领取）

    返回体的 lease_count 必然 > 1，worker 必须先核对站点订单列表再决定是否
    继续执行——核对不出结论时报 needs_human，绝不重新提交。
    """
    data = await container.task_queue.reclaim(task_id, payload.worker_id)
    return ApiResponse[ReclaimData](success=True, msg="success", data=data, code=0)


@router.get(
    "/{task_id}",
    response_model=ApiResponse[TaskDetail],
    dependencies=[Depends(require_bearer_token)],
)
async def get_order(
    task_id: str,
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[TaskDetail]:
    """任务详情 + 完整状态历史"""
    data = await container.task_queue.get_task_detail(task_id)
    return ApiResponse[TaskDetail](success=True, msg="success", data=data, code=0)


@router.get(
    "",
    response_model=ApiResponse[TaskListData],
    dependencies=[Depends(require_bearer_token)],
)
async def list_orders(
    status: str | None = Query(default=None),
    site: str | None = Query(default=None),
    limit: int = Query(default=50, ge=1, le=500),
    offset: int = Query(default=0, ge=0),
    container: GatewayContainer = Depends(get_container),
) -> ApiResponse[TaskListData]:
    """任务列表（运维与上游对账用）"""
    data = await container.task_queue.list_tasks(
        status=status, site=site, limit=limit, offset=offset
    )
    return ApiResponse[TaskListData](success=True, msg="success", data=data, code=0)