"""Cookie 管理路由。

## 2026-10-04 语义变更（CK 解耦）

CK 从 `login_tasks.cookie` 迁到 `accounts.cookie`，因此本页面的**记录单位从
「登录记录」变成「账号」**：

- 列表/汇总/导出 = **持有 CK 的账号**（一行一账号，不再出现同一账号多行）；
- 所有接口的 `id` 入参/出参 = **account_id**（以前是 task_id）；
- `DELETE /cookies/{id}` = **清掉该账号的 CK**（不可逆），必写审计；
- 重复检测 = **同一个 CK 值出现在多个账号上**（真正的风险：两个账号共用一个
  登录态）。以前查的是「同一账号多行持 CK」，那在解耦后已不可能出现。

⚠️ 这是本项目**破坏性最强**的接口面：清错账号的 CK 比 10-03 那次事故更糟。
所以删除/批量删除都单独写审计，且入参语义有专门的用例覆盖。
"""

import csv
import hashlib
import io
import threading
from concurrent.futures import ThreadPoolExecutor, as_completed
from datetime import UTC, datetime

from fastapi import APIRouter, Depends, HTTPException, Query
from fastapi.responses import StreamingResponse
from sqlalchemy import case, func, or_
from sqlalchemy.orm import Session, defer, joinedload

from ..database import SessionLocal, get_db
from ..deps import get_current_user, require_permission
from ..models import Account, AuditLog, LoginTask, User
from ..models import ProxyConfig as ProxyConfigModel
from ..permissions import get_user_permissions, user_has_permission
from ..schemas import CookieReloginRequest
from ..services.cookie_check_service import check_douyu_cookie
from ..services.douyu_service import (
    LOGIN_ATTEMPT_IN_FLIGHT_STATUSES,
    cookie_holding_filter,
    cookie_operable_filter,
)
from ..services.login_service import BatchRegistry, LoginBatchRunner, get_relogin_limits


def _fmt_dt(dt) -> str | None:
    """将 datetime 格式化为带时区的 ISO 字符串。"""
    if dt is None:
        return None
    if dt.tzinfo is None:
        dt = dt.replace(tzinfo=UTC)
    return dt.isoformat()


router = APIRouter(prefix="/api/cookies", tags=["Cookie管理"])
cookie_relogin_registry = BatchRegistry()


def _require_cookie_operation_perm(current: User) -> None:
    """允许脱敏的 CK 检测与重登，不授予 CK 查看或导出能力。"""
    if not (
        user_has_permission(current, "cookie:operate")
        or user_has_permission(current, "cookie:view")
    ):
        raise HTTPException(status_code=403, detail="无权限: cookie:operate")


def _parse_account_names(raw_names: str) -> list[str]:
    """解析前端粘贴的 Excel 账号名，每行一个并去重。"""
    names = []
    seen = set()
    for value in (
        (raw_names or "").replace("\r\n", "\n").replace("\r", "\n").split("\n")
    ):
        name = value.strip()
        if name and name not in seen:
            names.append(name)
            seen.add(name)
    return names


def _order_cookie_accounts(query, selected_names: list[str]):
    """按自定义账号名的输入顺序排序，未指定时保持默认的最新优先。"""
    if selected_names:
        input_order = case(
            {name: index for index, name in enumerate(selected_names)},
            value=Account.username,
            else_=len(selected_names),
        )
        return query.order_by(
            input_order, Account.cookie_updated_at.desc(), Account.id.desc()
        )
    return query.order_by(Account.cookie_updated_at.desc(), Account.id.desc())


def _relogin_display(account: Account, in_flight_batch_id: str = "") -> dict:
    """把账号上的重登进度映射成 CK 操作页展示用的状态。

    解耦后重登进度就写在账号上（`relogin_*`），不再需要顺着「最近一条登录记录」
    去猜。「正在跑」仍然要看有没有在途尝试 —— 那是尝试的属性，由调用方批量查出后
    以 ``in_flight_batch_id`` 传进来（避免 N+1）。
    """
    if in_flight_batch_id:
        status = "relogin_running"
    elif account.ck_check_status == "invalid" and account.relogin_next_at is not None:
        status = "relogin_pending"
    elif account.ck_check_status == "invalid" and account.relogin_last_error:
        status = "relogin_failed"
    else:
        status = ""
    return {
        "relogin_status": status,
        "relogin_message": account.relogin_last_error or "",
        "relogin_batch_id": in_flight_batch_id,
    }


def _check_one_cookie(account: Account) -> dict:
    """将共享检测结果补充为 CK 记录的接口返回格式。"""
    result = check_douyu_cookie(account.cookie or "")
    result["id"] = account.id
    result["checked_at"] = result["checked_at"].isoformat()
    return result


def _visible_cookie_accounts_query(db: Session, current: User):
    """返回当前用户可见的、仍持有 CK 的**账号**查询。

    以「账号上还有 CK」为准：重登失败与排队中的登录都不会让账号失去 CK，
    管理页必须继续能看到这些账号，否则客服会以为账号消失。
    """
    query = db.query(Account).filter(cookie_holding_filter())
    # 无全量登录任务权限时，只能操作分配给自己的账号。
    if not user_has_permission(current, "login:view_all"):
        query = query.filter(Account.assigned_to == current.id)
    return query


def _visible_cookie_accounts_query_with_users(db: Session, current: User):
    """同上，但预加载归属客服（列表展示需要）。"""
    return _visible_cookie_accounts_query(db, current).options(
        joinedload(Account.assigned_user)
    )


def _in_flight_batch_ids(db: Session, account_ids: list[int]) -> dict[int, str]:
    """批量取「在途尝试」的批次号，供重登状态展示（一次查询，避免 N+1）。"""
    if not account_ids:
        return {}
    rows = (
        db.query(LoginTask.account_id, func.max(LoginTask.attempt_batch_id))
        .filter(LoginTask.account_id.in_(account_ids))
        .filter(
            func.coalesce(LoginTask.attempt_status, "").in_(
                LOGIN_ATTEMPT_IN_FLIGHT_STATUSES
            )
        )
        .group_by(LoginTask.account_id)
        .all()
    )
    return {int(account_id): (batch_id or "") for account_id, batch_id in rows}


def _cookie_item(
    acc: Account,
    *,
    include_cookie: bool,
    in_flight_batch_id: str = "",
) -> dict:
    """构造账号的 CK 列表项（REST 与详情接口共用）。"""
    cookie = (acc.cookie or "") if include_cookie else ""
    item = {
        "id": acc.id,
        "account_id": acc.id,
        "account_username": acc.username,
        "assigned_to": acc.assigned_to,
        "assigned_username": acc.assigned_user.username if acc.assigned_user else None,
        # 这份 CK 是什么时候拿到的（原来是登录记录的 finished_at）
        "created_at": _fmt_dt(acc.cookie_updated_at),
        "ck_check_status": acc.ck_check_status or "",
        "ck_check_result": acc.ck_check_result,
        "ck_checked_at": _fmt_dt(acc.ck_checked_at),
        **_relogin_display(acc, in_flight_batch_id),
    }
    if include_cookie:
        item["cookie"] = cookie
        item["cookie_preview"] = cookie[:50] + "..." if len(cookie) > 50 else cookie
        item["account_password"] = acc.password
    else:
        item["cookie"] = ""
        item["cookie_preview"] = "***"
        item["account_password"] = ""
    return item


@router.get("")
def list_cookies(
    search: str = Query(""),
    tag: str = Query(""),
    account_names: str = Query(""),
    page: int | None = Query(None, ge=1),
    page_size: int = Query(20, ge=1, le=200),
    include_cookie: bool = Query(True),
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """查看持有 CK 的账号列表（一行一账号）。"""
    if not user_has_permission(current, "cookie:view"):
        raise HTTPException(status_code=403, detail="无权限: cookie:view")
    query = _visible_cookie_accounts_query_with_users(db, current)
    if not include_cookie:
        # 列表默认不拖 1.7KB 的密文；复制/导出时才按 id 取完整值。
        query = query.options(
            defer(Account.cookie),
            defer(Account.password),
            defer(Account.email),
            defer(Account.email_password),
        )
    else:
        query = query.options(defer(Account.email), defer(Account.email_password))

    search_text = (search or "").strip()
    tag_value = (tag or "").strip()
    selected_names = _parse_account_names(account_names)
    if selected_names:
        query = query.filter(Account.username.in_(selected_names))
    if tag_value:
        query = query.filter(Account.tag == tag_value)
    if search_text:
        pattern = f"%{search_text}%"
        query = query.outerjoin(User, Account.assigned_to == User.id).filter(
            or_(
                Account.username.ilike(pattern),
                Account.tag.ilike(pattern),
                User.username.ilike(pattern),
            )
        )

    total = None
    if page is not None:
        total = query.order_by(None).with_entities(func.count(Account.id)).scalar() or 0
    query = _order_cookie_accounts(query, selected_names)
    if page is not None:
        query = query.offset((page - 1) * page_size).limit(page_size)

    accounts = query.all()
    in_flight = _in_flight_batch_ids(db, [acc.id for acc in accounts])
    # include_cookie 已经在上面的权限里保证只对有 cookie:view 的人开放。
    result = [
        _cookie_item(
            acc,
            include_cookie=include_cookie,
            in_flight_batch_id=in_flight.get(acc.id, ""),
        )
        for acc in accounts
    ]
    if page is not None:
        return {
            "items": result,
            "total": total or 0,
            "page": page,
            "page_size": page_size,
        }
    return result


@router.get("/summary")
def cookies_summary(
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """Cookie 管理统计，避免前端为了卡片统计拉全量 Cookie。"""
    if not user_has_permission(current, "cookie:view"):
        raise HTTPException(status_code=403, detail="无权限: cookie:view")
    query = _visible_cookie_accounts_query(db, current)
    total = query.with_entities(func.count(Account.id)).scalar() or 0
    assigned_count = (
        query.filter(Account.assigned_to.isnot(None))
        .with_entities(func.count(Account.id))
        .scalar()
        or 0
    )
    return {
        "total": total,
        "assigned_count": assigned_count,
        "unassigned_count": max(0, total - assigned_count),
    }


@router.get("/operations")
def list_cookie_operations(
    search: str = Query(""),
    tag: str = Query(""),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=200),
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """脱敏的 CK 操作列表，只用于检测与重登。"""
    _require_cookie_operation_perm(current)
    query = _visible_cookie_accounts_query(db, current)
    search_text = (search or "").strip()
    tag_value = (tag or "").strip()
    if tag_value:
        query = query.filter(Account.tag == tag_value)
    if search_text:
        query = query.filter(
            or_(
                Account.username.ilike(f"%{search_text}%"),
                Account.tag.ilike(f"%{search_text}%"),
            )
        )

    total = query.order_by(None).with_entities(func.count(Account.id)).scalar() or 0
    accounts = (
        query.order_by(Account.cookie_updated_at.desc(), Account.id.desc())
        .offset((page - 1) * page_size)
        .limit(page_size)
        .all()
    )
    in_flight = _in_flight_batch_ids(db, [acc.id for acc in accounts])
    return {
        "items": [
            {
                "id": acc.id,
                "account_username": acc.username,
                "tag": acc.tag or "",
                "ck_check_status": acc.ck_check_status or "",
                "ck_checked_at": _fmt_dt(acc.ck_checked_at),
                "created_at": _fmt_dt(acc.cookie_updated_at),
                **_relogin_display(acc, in_flight.get(acc.id, "")),
            }
            for acc in accounts
        ],
        "total": total,
        "page": page,
        "page_size": page_size,
    }


@router.get("/operations/tags")
def list_cookie_operation_tags(
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """返回当前用户可操作 CK 的账号标签，不跨越账号分配范围。"""
    _require_cookie_operation_perm(current)
    query = _visible_cookie_accounts_query(db, current)
    rows = (
        query.filter(Account.tag != "", Account.tag.isnot(None))
        .with_entities(Account.tag)
        .distinct()
        .order_by(Account.tag.asc())
        .all()
    )
    return [tag for (tag,) in rows if tag]


@router.get("/duplicates")
def find_duplicate_cookies(
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("cookie:view")),
):
    """检测**同一个 CK 值出现在多个账号上**，不返回 Cookie 敏感字段。

    解耦前这里查的是「同一账号有多行持 CK」—— 那是「一行一账号」不变量漏水的产物。
    现在每个账号只有一份 CK，真正值得报警的是**多个账号共用一个登录态**：
    要么是导入时复制粘贴错了，要么是同一个斗鱼号被建了两次。这两种都会让
    「按账号算的积分/兑换」失真，所以按 CK 指纹分组。

    指纹用 sha256 而不是密文本身：CK 用 AES-GCM + 随机 nonce 加密，
    **同一个明文每次加密结果都不同**，直接比密文永远比不出重复。
    """
    accounts = (
        _visible_cookie_accounts_query(db, current)
        .order_by(Account.username.asc(), Account.id.asc())
        .all()
    )

    grouped: dict[str, list[Account]] = {}
    for acc in accounts:
        cookie = acc.cookie or ""
        if not cookie:
            continue
        fingerprint = hashlib.sha256(cookie.encode("utf-8")).hexdigest()
        grouped.setdefault(fingerprint, []).append(acc)

    duplicate_groups = []
    for fingerprint, group in grouped.items():
        if len(group) < 2:
            continue
        account_ids = [acc.id for acc in group]
        duplicate_groups.append(
            {
                # account_key 保持字段名兼容，现在放的是 CK 指纹前 12 位。
                "account_key": fingerprint[:12],
                "account_names": [acc.username for acc in group],
                "cookie_count": len(group),
                "account_count": len(group),
                "cookie_ids": account_ids,
                "account_ids": account_ids,
                "records": [
                    {
                        "id": acc.id,
                        "account_id": acc.id,
                        "batch_id": "",
                        "finished_at": _fmt_dt(acc.cookie_updated_at),
                    }
                    for acc in group
                ],
            }
        )
    duplicate_groups.sort(key=lambda item: (-item["cookie_count"], item["account_key"]))

    return {
        "success": True,
        "duplicate_groups": len(duplicate_groups),
        "duplicate_rows": sum(item["cookie_count"] for item in duplicate_groups),
        "groups": duplicate_groups,
    }


@router.get("/export")
def export_cookies(
    format: str = "csv",
    account_names: str = Query(""),
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("cookie:export")),
):
    """导出 Cookie，支持 csv 和 custom 格式。
    csv: 账号, Cookie, 时间
    custom: 账号----密码----ck
    """
    query = _visible_cookie_accounts_query(db, current)
    selected_names = _parse_account_names(account_names)
    if selected_names:
        query = query.filter(Account.username.in_(selected_names))
    accounts = _order_cookie_accounts(query, selected_names).all()

    if format == "custom":
        # 账号----密码----ck
        lines = [
            f"{acc.username}----{acc.password}----{acc.cookie or ''}"
            for acc in accounts
        ]
        content = "\r\n".join(lines)
        filename = "cookies_custom.txt"
        media = "text/plain"
    else:
        # CSV: 账号, Cookie, 时间
        output = io.StringIO()
        writer = csv.writer(output)
        writer.writerow(["账号", "Cookie", "时间"])
        for acc in accounts:
            writer.writerow(
                [acc.username, acc.cookie or "", _fmt_dt(acc.cookie_updated_at) or ""]
            )
        content = output.getvalue()
        filename = "cookies.csv"
        media = "text/csv"

    return StreamingResponse(
        iter([content]),
        media_type=media,
        headers={"Content-Disposition": f"attachment; filename={filename}"},
    )


def _check_cookies(ids: str, db: Session, current: User, *, detailed: bool) -> dict:
    """执行 CK 检测；客服操作页仅返回状态，不返回账号衍生信息。

    `ids` 是**账号 ID**（2026-10-04 起）。
    """
    if not ids:
        raise HTTPException(status_code=400, detail="请指定账号ID")
    id_list = [int(x) for x in ids.split(",") if x.strip().isdigit()]
    if not id_list:
        raise HTTPException(status_code=400, detail="无效的ID")
    accounts = (
        _visible_cookie_accounts_query(db, current)
        .filter(Account.id.in_(id_list))
        .filter(cookie_operable_filter())
        .all()
    )
    if not accounts:
        raise HTTPException(status_code=404, detail="账号不存在或不可检测")

    results: list[dict] = []
    with ThreadPoolExecutor(max_workers=8) as pool:
        futures = {pool.submit(_check_one_cookie, acc): acc for acc in accounts}
        for future in as_completed(futures):
            try:
                results.append(future.result())
            except Exception as exc:  # noqa: BLE001 外部接口与任务边界需要保留宽泛异常兜底
                acc = futures[future]
                results.append(
                    {
                        "id": acc.id,
                        "valid": False,
                        "message": f"检测异常: {exc}",
                        "fish_ball": None,
                        "nickname": None,
                        "level": None,
                        "checked_at": datetime.now(UTC).isoformat(),
                    }
                )
    results.sort(key=lambda item: item["id"])

    # 持久化检测结果到**账号**，刷新/翻页不丢失。
    accounts_by_id = {acc.id: acc for acc in accounts}
    for item in results:
        acc = accounts_by_id.get(item["id"])
        if not acc:
            continue
        acc.ck_check_status = "valid" if item["valid"] else "invalid"
        acc.ck_check_result = {
            "fish_ball": item.get("fish_ball"),
            "nickname": item.get("nickname"),
            "level": item.get("level"),
            "message": item.get("message", ""),
        }
        acc.ck_checked_at = datetime.now(UTC)
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="cookie:check",
            target=f"检测 {len(results)} 个账号的 CK",
        )
    )
    db.commit()
    if not detailed:
        results = [
            {"id": item["id"], "valid": item["valid"], "checked_at": item["checked_at"]}
            for item in results
        ]
    return {"results": results, "success": True}


@router.post("/check")
def check_cookies(
    ids: str = "",
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """批量检测斗鱼 Cookie 有效性，供 Cookie 管理页查看详细结果。"""
    if not user_has_permission(current, "cookie:view"):
        raise HTTPException(status_code=403, detail="无权限: cookie:view")
    return _check_cookies(ids, db, current, detailed=True)


@router.post("/operations/check")
def check_cookie_operations(
    ids: str = "",
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """脱敏 CK 检测，只返回有效性与检测时间。"""
    _require_cookie_operation_perm(current)
    return _check_cookies(ids, db, current, detailed=False)


def _start_relogin_accounts(
    accounts: list[Account],
    db: Session,
    current: User,
    *,
    action: str = "cookie:relogin",
):
    """启动重登批次：旧 CK 保留到新登录成功后才替换。

    入参是**账号**（2026-10-04 起）：调度单位就是账号，登录记录只是每次尝试的历史。
    """
    if not accounts:
        raise HTTPException(status_code=404, detail="账号不存在")

    account_ids: list[int] = []
    skipped: list[int] = []
    for acc in accounts:
        if not acc.password or not acc.email:
            # 记录这次尝试失败即可；账号已有的 CK 原封不动。
            db.add(
                LoginTask(
                    batch_id="relogin-precheck",
                    account_id=acc.id,
                    status="failed",
                    attempt_status="failed",
                    attempt_message="重新登录失败: 账号缺少密码或邮箱，旧 Cookie 已保留",
                    attempt_at=datetime.now(UTC),
                    created_by=current.id,
                )
            )
            skipped.append(acc.id)
            continue
        account_ids.append(acc.id)

    if not account_ids:
        db.commit()
        raise HTTPException(
            status_code=400, detail="没有可重登的账号，请检查账号凭据或当前重登状态"
        )

    proxy = db.query(ProxyConfigModel).first()
    thread_db = SessionLocal()
    max_login_retries, max_total_time = get_relogin_limits()
    runner = LoginBatchRunner(
        db=thread_db,
        account_ids=account_ids,
        created_by=current.id,
        creator_permissions=get_user_permissions(current),
        max_login_retries=max_login_retries,
        max_total_time=max_total_time,
        proxy_config=proxy,
        log_queue=None,
        loop=None,
        concurrency=3,
        mode="relogin",
    )
    batch_id = runner.batch_id
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action=action,
            target=f"重登 {len(account_ids)} 个账号的 CK",
            detail="旧 Cookie 将在新登录成功后替换",
        )
    )
    db.commit()
    cookie_relogin_registry.register(batch_id, None, None, runner, owner_id=current.id)

    def run_relogin_batch():
        try:
            runner.run()
        except Exception as exc:  # noqa: BLE001 外部接口与任务边界需要保留宽泛异常兜底
            runner._push_log("error", f"批量重新登录异常: {exc}")
            message = f"重新登录异常: {exc}（旧 Cookie 已保留）"
            for account_id in account_ids:
                runner._mark_account_relogin_stopped(account_id, message)
            runner.db.close()
        finally:
            cookie_relogin_registry.pop(batch_id)

    threading.Thread(target=run_relogin_batch, daemon=True).start()
    return {
        "batch_id": batch_id,
        "count": len(account_ids),
        "skipped": len(skipped),
        "success": True,
    }


@router.post("/operations/relogin/{batch_id}/stop")
def stop_cookie_relogin(
    batch_id: str,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """停止当前用户发起的 CK 重登批次。"""
    _require_cookie_operation_perm(current)
    batch = cookie_relogin_registry.get(batch_id)
    if not batch:
        raise HTTPException(
            status_code=404, detail="重登批次不存在、已结束或服务已重启"
        )
    if batch.get("owner_id") != current.id and not user_has_permission(
        current, "login:view_all"
    ):
        raise HTTPException(status_code=403, detail="无权限停止该重登批次")

    batch["runner"].stop()
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="cookie:relogin_stop",
            target=f"停止 CK 重登批次 {batch_id}",
        )
    )
    db.commit()
    return {
        "message": "已发送停止信号，正在登录的账号会在当前请求结束后停止",
        "success": True,
    }


def _start_relogin(req: CookieReloginRequest, db: Session, current: User):
    """按选中的账号启动重新登录（`req.ids` 是账号 ID）。"""
    if not req.ids:
        raise HTTPException(status_code=400, detail="请选择要重新登录的账号")
    accounts = (
        _visible_cookie_accounts_query(db, current)
        .filter(Account.id.in_(req.ids))
        .filter(cookie_operable_filter())
        .all()
    )
    return _start_relogin_accounts(accounts, db, current)


@router.post("/relogin")
def relogin_cookies(
    req: CookieReloginRequest,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("login:batch")),
):
    """Cookie 管理页的重登入口，保留既有 login:batch 权限。"""
    return _start_relogin(req, db, current)


@router.post("/operations/relogin")
def relogin_cookie_operations(
    req: CookieReloginRequest,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """脱敏 CK 操作页的重登入口。"""
    _require_cookie_operation_perm(current)
    return _start_relogin(req, db, current)


@router.post("/operations/relogin-invalid")
def relogin_invalid_cookie_operations(
    search: str = Query(""),
    tag: str = Query(""),
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """批量重新登录当前用户可见且最近检测为无效的账号。"""
    _require_cookie_operation_perm(current)
    query = _visible_cookie_accounts_query(db, current).filter(
        Account.ck_check_status == "invalid",
        cookie_operable_filter(),
    )
    if tag.strip():
        query = query.filter(Account.tag == tag.strip())
    if search.strip():
        pattern = f"%{search.strip()}%"
        query = query.filter(
            or_(Account.username.ilike(pattern), Account.tag.ilike(pattern))
        )
    accounts = query.order_by(Account.id.asc()).all()
    return _start_relogin_accounts(
        accounts, db, current, action="cookie:relogin_invalid"
    )


@router.get("/{account_id}")
def get_cookie(
    account_id: int,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """获取单个账号的 CK 详情，供复制操作按需读取完整敏感字段。"""
    if not user_has_permission(current, "cookie:view"):
        raise HTTPException(status_code=403, detail="无权限: cookie:view")
    acc = (
        _visible_cookie_accounts_query_with_users(db, current)
        .filter(Account.id == account_id)
        .first()
    )
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在或没有 CK")
    return _cookie_item(acc, include_cookie=True)


@router.delete("/batch")
def delete_cookies_batch(
    account_ids: str = "",
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("cookie:export")),
):
    """批量清除账号的 CK（**不可逆**，写审计）。"""
    if not account_ids:
        raise HTTPException(status_code=400, detail="请指定账号ID")
    ids = [int(x) for x in account_ids.split(",") if x.strip().isdigit()]
    if not ids:
        raise HTTPException(status_code=400, detail="无效的ID")
    accounts = (
        _visible_cookie_accounts_query(db, current).filter(Account.id.in_(ids)).all()
    )
    now = datetime.now(UTC)
    for acc in accounts:
        acc.cookie = ""
        acc.cookie_updated_at = now
        acc.ck_check_status = ""
        acc.ck_check_result = None
        acc.ck_checked_at = None
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="cookie:delete",
            target=f"清除 {len(accounts)} 个账号的 CK",
            detail="不可逆：CK 已从账号上清空",
        )
    )
    db.commit()
    return {
        "message": f"已清除 {len(accounts)} 个账号的 CK",
        "deleted": len(accounts),
        "success": True,
    }


@router.delete("/{account_id}")
def delete_cookie(
    account_id: int,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("cookie:export")),
):
    """清除一个账号的 CK（**不可逆**，写审计）。

    ⚠️ 入参是 **account_id**（2026-10-04 起）。以前是 task_id —— 语义变了，
    改错会变成「点删除清掉另一个账号的登录态」，所以有专门用例盯这一条。
    """
    acc = (
        _visible_cookie_accounts_query(db, current)
        .filter(Account.id == account_id)
        .first()
    )
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在或没有 CK")
    username = acc.username
    acc.cookie = ""
    acc.cookie_updated_at = datetime.now(UTC)
    acc.ck_check_status = ""
    acc.ck_check_result = None
    acc.ck_checked_at = None
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="cookie:delete",
            target=username,
            detail="不可逆：CK 已从该账号清空",
        )
    )
    db.commit()
    return {"message": "已删除", "success": True}