live-hub-py/web/backend/routers/accounts.py

"""账号管理路由"""

from typing import Any

from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy import func, or_, select, text
from sqlalchemy.orm import Session, defer, joinedload

from ..database import get_db
from ..deps import get_current_user, require_permission
from ..models import (
    Account,
    AccountEvent,
    AuditLog,
    DouyuTask,
    DouyuWorkbenchAccount,
    LoginTask,
    User,
)
from ..permissions import user_has_permission
from ..schemas import (
    AccountAssign,
    AccountAutomationUpdate,
    AccountBulkSelection,
    AccountBulkTag,
    AccountImport,
    AccountLifecycleUpdate,
    AccountOut,
    AccountRemark,
    AccountTag,
    BatchAssign,
)
from ..services.account_binding import bind_payload
from ..services.account_events_service import (
    CATEGORY_OPS,
    EVENT_ASSIGNED,
    EVENT_CK_INVALID,
    EVENT_ELITE_OPENED,
    EVENT_ESPORTS_OPENED,
    EVENT_EXCHANGE,
    EVENT_RECHARGE,
    EVENT_REMARK_CHANGED,
    EVENT_TAG_CHANGED,
    emit_bulk,
)
from ..services.account_lifecycle import (
    STATUS_ARCHIVED,
    STATUS_LABELS,
    set_manual_state,
)
from ..services.account_service import (
    cookie_account_ids_query,
    parse_and_build_accounts,
)
from ..services.audit_service import record_account_action, record_audit
from ..services.douyu_service import cookie_holding_filter

router = APIRouter(prefix="/api/accounts", tags=["账号管理"])


def _visible_accounts_query(db: Session, current: User):
    """返回当前用户可见的斗鱼账号查询。"""
    query = db.query(Account)
    if user_has_permission(current, "account:view_all"):
        return query
    if user_has_permission(current, "account:view_assigned"):
        return query.filter(Account.assigned_to == current.id)
    raise HTTPException(status_code=403, detail="无权查看账号")


def _query_str(value) -> str:
    """把查询参数安全地取成字符串。

    存在的理由：本仓库的测试**直接调用路由函数**（不经 FastAPI），此时
    `Query(...)` 的默认值不会被解析，参数拿到的仍是 `Query` 对象 ——
    对它调 `.strip()` 会炸。这里统一兜住，免得每加一个筛选参数就要改一遍用例。
    """
    return value.strip() if isinstance(value, str) else ""


def _filter_accounts_query(
    db: Session,
    query,
    current: User,
    *,
    assigned_only: bool = False,
    tag: str | None = None,
    has_cookie: bool = False,
    search: str = "",
    status: str = "",
    ck_status: str = "",
    bind_status: str = "",
):
    """复用列表筛选条件，供分页列表和全量批量操作保持一致。"""
    if has_cookie:
        query = query.filter(Account.id.in_(cookie_account_ids_query(db)))
    if assigned_only and user_has_permission(current, "account:view_all"):
        query = query.filter(Account.assigned_to.isnot(None))
    tag_value = _query_str(tag)
    if tag_value:
        query = query.filter(Account.tag == tag_value)
    status_value = _query_str(status)
    if status_value:
        query = query.filter(Account.status == status_value)
    else:
        # 归档账号默认不出现 —— 「归档」本身就是「收起来别烦我」的意思。
        # 要看它们必须显式带 status=archived。
        query = query.filter(Account.status != STATUS_ARCHIVED)
    ck_value = _query_str(ck_status)
    if ck_value:
        query = query.filter(Account.ck_check_status == ck_value)
    bind_value = _query_str(bind_status)
    if bind_value:
        # 三个作用域任一命中即算（列表上「绑定」是一列，不分开筛）
        query = query.filter(
            or_(
                Account.role_bind_status == bind_value,
                Account.esports_bind_status == bind_value,
                Account.xpd_bind_status == bind_value,
            )
        )
    search_text = _query_str(search)
    if search_text:
        pattern = f"%{search_text}%"
        query = query.filter(
            or_(
                Account.username.ilike(pattern),
                Account.tag.ilike(pattern),
                Account.remark.ilike(pattern),
            )
        )
    return query


def _selected_account_ids(
    db: Session, current: User, req: AccountBulkSelection
) -> list[int]:
    """解析批量操作目标：当前筛选全部或显式选择的 ID。"""
    if req.all_matching:
        rows = (
            _filter_accounts_query(
                db,
                _visible_accounts_query(db, current),
                current,
                assigned_only=req.assigned_only,
                tag=req.tag,
                has_cookie=req.has_cookie,
                search=req.search,
            )
            .with_entities(Account.id)
            .order_by(None)
            .all()
        )
        return [account_id for (account_id,) in rows]

    seen = set()
    ids = []
    for account_id in req.account_ids:
        if account_id not in seen:
            seen.add(account_id)
            ids.append(account_id)
    if not ids:
        return []
    rows = (
        _visible_accounts_query(db, current)
        .filter(Account.id.in_(ids))
        .with_entities(Account.id)
        .order_by(None)
        .all()
    )
    allowed = {account_id for (account_id,) in rows}
    return [account_id for account_id in ids if account_id in allowed]


def _require_account_tag_permission(current: User) -> None:
    """标签权限兼容历史上使用账号导入权限的运营人员。"""
    if not (
        user_has_permission(current, "account:tag")
        or user_has_permission(current, "account:import")
    ):
        raise HTTPException(status_code=403, detail="无权修改账号标签")


@router.get("")
def list_accounts(
    assigned_only: bool = Query(False),
    tag: str = Query(None),
    has_cookie: bool = Query(False),
    search: str = Query(""),
    status: str = Query("", description="按生命周期状态筛选；空=全部（不含归档）"),
    ck_status: str = Query(
        "", description="按 CK 健康结论筛选：valid / invalid / error"
    ),
    bind_status: str = Query(
        "", description="按角色绑定筛选：unknown/unbound/pending/bound"
    ),
    page: int | None = Query(None, ge=1),
    page_size: int = Query(20, ge=1, le=200),
    include_sensitive: bool = Query(False),
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """列表：按角色返回不同字段和范围。"""
    query = _filter_accounts_query(
        db,
        _visible_accounts_query(db, current),
        current,
        assigned_only=assigned_only,
        tag=tag,
        has_cookie=has_cookie,
        search=search,
        status=status,
        ck_status=ck_status,
        bind_status=bind_status,
    )

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

    can_include_sensitive = include_sensitive and user_has_permission(
        current, "account:view_full"
    )
    options = [joinedload(Account.assigned_user)]
    if not can_include_sensitive:
        options.extend(
            [
                defer(Account.password),
                defer(Account.email),
                defer(Account.email_password),
            ]
        )
    accounts = query.options(*options).all()

    # 「兑换记录」列：**每页只跑一条聚合查询**，不是每行一条（避免 N+1）。
    # 数据源是账号自己的事件流（`account_events` 的 `exchange`），
    # 而不是 `douyu_tasks` 的 JSON —— 后者是执行日志，S5 起业务事实已经在事件里了。
    exchange_stats: dict[int, tuple[int, Any, str]] = {}
    ids = [acc.id for acc in accounts]
    if ids:
        # ① 次数 + 最近一次时间（分组聚合，走 (account_id, event_type, occurred_at) 复合索引）
        for account_id, count, last_at in (
            db.query(
                AccountEvent.account_id,
                func.count(AccountEvent.id),
                func.max(AccountEvent.occurred_at),
            )
            .filter(
                AccountEvent.account_id.in_(ids),
                AccountEvent.event_type == EVENT_EXCHANGE,
            )
            .group_by(AccountEvent.account_id)
            .all()
        ):
            exchange_stats[int(account_id)] = (int(count or 0), last_at, "")
        # ② 最近一次兑换的商品名（窗口函数取每个账号的最新一条）
        ranked = (
            db.query(
                AccountEvent.account_id.label("account_id"),
                AccountEvent.title.label("title"),
                func.row_number()
                .over(
                    partition_by=AccountEvent.account_id,
                    order_by=AccountEvent.id.desc(),
                )
                .label("rn"),
            )
            .filter(
                AccountEvent.account_id.in_(ids),
                AccountEvent.event_type == EVENT_EXCHANGE,
            )
            .subquery()
        )
        for account_id, title in (
            db.query(ranked.c.account_id, ranked.c.title).filter(ranked.c.rn == 1).all()
        ):
            key = int(account_id)
            if key in exchange_stats:
                count, last_at, _ = exchange_stats[key]
                exchange_stats[key] = (count, last_at, str(title or ""))

    result = []
    for acc in accounts:
        item = AccountOut(
            id=acc.id,
            username=acc.username,
            remark=acc.remark or "",
            tag=acc.tag or "",
            assigned_to=acc.assigned_to,
            assigned_username=acc.assigned_user.username if acc.assigned_user else None,
            created_at=acc.created_at,
            status=acc.status or "",
            status_label=STATUS_LABELS.get(acc.status or "", acc.status or ""),
            status_reason=acc.status_reason or "",
            auto_managed=bool(acc.auto_managed),
            # 关键列：全部是 accounts 行上的字段，无 JOIN / 无聚合
            has_cookie=bool(acc.cookie),
            ck_check_status=acc.ck_check_status or "",
            ck_checked_at=acc.ck_checked_at,
            points=acc.points,
            gold_balance=acc.gold_balance,
            exchange_count=exchange_stats.get(acc.id, (0, None, ""))[0],
            last_exchange_at=exchange_stats.get(acc.id, (0, None, ""))[1],
            last_exchange_name=exchange_stats.get(acc.id, (0, None, ""))[2],
            **bind_payload(acc),
        )
        # 只有管理员可看完整字段（密码、邮箱等）
        if can_include_sensitive:
            item.password = acc.password
            item.email = acc.email
            item.email_password = acc.email_password
        result.append(item)
    if page is not None:
        return {
            "items": result,
            "total": total or 0,
            "page": page,
            "page_size": page_size,
        }
    return result


@router.get("/summary")
def accounts_summary(
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """账号管理统计，避免前端为了卡片统计拉全量账号。"""
    query = db.query(Account)
    if not user_has_permission(current, "account:view_all"):
        if user_has_permission(current, "account:view_assigned"):
            query = query.filter(Account.assigned_to == current.id)
        else:
            raise HTTPException(status_code=403, detail="无权查看账号")

    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
    )
    tag_count = (
        query.filter(Account.tag != "", Account.tag.isnot(None))
        .with_entities(func.count(func.distinct(Account.tag)))
        .scalar()
        or 0
    )
    # 按**生命周期状态**分布：这才是可行动的（「有几个要处理」比「有几个标签」有用得多）。
    # 归档默认不计入（与列表默认口径一致 —— 归档就是「收起来别烦我」）。
    visible = query.filter(Account.status != STATUS_ARCHIVED)
    status_rows = (
        visible.with_entities(Account.status, func.count(Account.id))
        .group_by(Account.status)
        .all()
    )
    by_status = {str(row[0] or ""): int(row[1] or 0) for row in status_rows}
    visible_total = sum(by_status.values())
    return {
        "total": total,
        "visible_total": visible_total,
        # 生命周期分布（键是 6 状态的枚举值）
        "by_status": by_status,
        # 需要人关注的：CK 已被判失效的账号数（含待人工）
        "ck_invalid_count": int(
            visible.filter(Account.ck_check_status == "invalid")
            .with_entities(func.count(Account.id))
            .scalar()
            or 0
        ),
        "no_cookie_count": int(
            visible.filter(or_(Account.cookie.is_(None), Account.cookie == ""))
            .with_entities(func.count(Account.id))
            .scalar()
            or 0
        ),
        "assigned_count": assigned_count,
        "unassigned_count": max(0, total - assigned_count),
        "tag_count": tag_count,
    }


@router.post("/import")
def import_accounts(
    req: AccountImport,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:import")),
):
    """批量导入账号。格式：用户名|密码|邮箱|邮箱密码|标签(可选)

    req.tag 为统一标签兜底：某行未单独写标签时使用该值，行内标签优先。
    库中已存在的用户名（大小写不敏感）与同批重复行会自动跳过。
    """
    accounts, skipped, duplicated = parse_and_build_accounts(db, req.text, req.tag)

    if accounts:
        db.add_all(accounts)
        db.add(
            AuditLog(
                user_id=current.id,
                username=current.username,
                action="account:import",
                target=f"导入{len(accounts)}个",
            )
        )
        db.commit()

    duplicated_note = f"，重复跳过 {duplicated} 个" if duplicated else ""
    return {
        "message": f"导入成功 {len(accounts)} 个，跳过 {skipped} 个{duplicated_note}",
        "success": True,
        "count": len(accounts),
    }


@router.put("/{account_id}/assign")
def assign_account(
    account_id: int,
    req: AccountAssign,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:assign")),
):
    acc = db.query(Account).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")

    if req.assigned_to:
        target = db.query(User).filter(User.id == req.assigned_to).first()
        if not target:
            raise HTTPException(status_code=404, detail="目标用户不存在")
        if target.role != "support":
            raise HTTPException(status_code=400, detail="只能分配给客服角色")

        # 只能分配当前仍持有 CK 的账号（CK 现在挂在账号上）
        has_success = (
            db.query(Account)
            .filter(
                Account.id == account_id,
                cookie_holding_filter(),
            )
            .first()
        )
        if not has_success:
            raise HTTPException(status_code=400, detail="该账号尚未成功登录，无法分配")

    if acc.assigned_to != req.assigned_to:
        acc.assigned_to = req.assigned_to
        db.query(DouyuTask).filter(DouyuTask.account_id == acc.id).update(
            {DouyuTask.account_assigned_to: req.assigned_to}, synchronize_session=False
        )
    target = db.query(User).filter(User.id == req.assigned_to).first()
    target_name = target.username if target else ""
    record_account_action(
        db,
        current,
        account=acc,
        action="account:assign",
        event_type=EVENT_ASSIGNED,
        title=f"分配给 {target_name}" if target_name else "取消分配",
        detail={"assigned_to": req.assigned_to, "assigned_username": target_name},
    )
    db.commit()
    return {"message": "已分配", "success": True}


@router.post("/batch-assign")
def batch_assign_accounts(
    req: BatchAssign,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:assign")),
):
    """批量分配/取消分配账号给客服。"""
    if not req.account_ids:
        raise HTTPException(status_code=400, detail="请选择账号")

    # 验证目标用户
    if req.assigned_to is not None:
        target = db.query(User).filter(User.id == req.assigned_to).first()
        if not target:
            raise HTTPException(status_code=404, detail="目标用户不存在")
        if target.role != "support":
            raise HTTPException(status_code=400, detail="只能分配给客服角色")

        # 只能分配当前仍持有 CK 的账号（CK 现在挂在账号上）
        cookie_ids_query = select(Account.id).where(cookie_holding_filter())
        invalid_ids = (
            db.query(Account.id)
            .filter(
                Account.id.in_(req.account_ids),
                Account.id.notin_(cookie_ids_query),
            )
            .all()
        )
        if invalid_ids:
            names = (
                db.query(Account.username)
                .filter(Account.id.in_([i[0] for i in invalid_ids]))
                .all()
            )
            name_list = ", ".join([n[0] for n in names[:5]])
            suffix = "..." if len(invalid_ids) > 5 else ""
            raise HTTPException(
                status_code=400,
                detail=f"以下账号尚未成功登录，无法分配：{name_list}{suffix}",
            )

    # 先取出账号对象（批量时间线要逐个写事件，光有 count 不够）
    target_accounts = db.query(Account).filter(Account.id.in_(req.account_ids)).all()
    count = (
        db.query(Account)
        .filter(Account.id.in_(req.account_ids))
        .update({Account.assigned_to: req.assigned_to}, synchronize_session=False)
    )
    db.query(DouyuTask).filter(DouyuTask.account_id.in_(req.account_ids)).update(
        {DouyuTask.account_assigned_to: req.assigned_to}, synchronize_session=False
    )
    target_user = (
        db.query(User).filter(User.id == req.assigned_to).first()
        if req.assigned_to is not None
        else None
    )
    target_name = target_user.username if target_user else ""
    action_word = "分配" if req.assigned_to else "取消分配"
    title = f"批量分配：{target_name}" if target_name else "批量取消分配"
    record_audit(
        db,
        current,
        action="account:assign",
        target=f"批量{action_word}{count}个账号",
        detail={"assigned_to": req.assigned_to, "assigned_username": target_name},
    )
    # 每个账号的时间线各留一条 —— 「这个账号什么时候被分配给谁」是账号级事实。
    emit_bulk(
        db,
        [
            {
                "account_id": acc.id,
                "event_type": EVENT_ASSIGNED,
                "title": title,
                "category": CATEGORY_OPS,
                "detail": {
                    "assigned_to": req.assigned_to,
                    "assigned_username": target_name,
                },
                "source": "audit",
                "actor_type": "user",
                "actor_id": current.id,
            }
            for acc in target_accounts
        ],
    )
    db.commit()
    action = "分配" if req.assigned_to else "取消分配"
    return {
        "message": f"已批量{action} {count} 个账号",
        "success": True,
        "count": count,
    }


@router.get("/assignments/summary")
def assignments_summary(
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:assign")),
):
    """分配概览：每个客服分配了多少账号（仅统计当前仍持有 CK 的账号）。"""
    cookie_subq = select(Account.id).where(cookie_holding_filter())
    cookie_accounts = db.query(Account).filter(Account.id.in_(cookie_subq)).subquery()

    results = (
        db.query(
            User.id, User.username, func.count(cookie_accounts.c.id).label("count")
        )
        .outerjoin(cookie_accounts, cookie_accounts.c.assigned_to == User.id)
        .filter(User.role == "support")
        .group_by(User.id, User.username)
        .order_by(func.count(cookie_accounts.c.id).desc())
        .all()
    )
    total_unassigned = (
        db.query(func.count(cookie_accounts.c.id))
        .filter(cookie_accounts.c.assigned_to.is_(None))
        .scalar()
    ) or 0
    return {
        "support_users": [
            {"id": uid, "username": uname, "assigned_count": cnt}
            for uid, uname, cnt in results
        ],
        "unassigned_count": total_unassigned,
    }


@router.put("/{account_id}/lifecycle")
def set_account_lifecycle(
    account_id: int,
    req: AccountLifecycleUpdate,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:manage")),
):
    """人工停用 / 归档 / 恢复账号（生命周期状态机，见 `services/account_lifecycle`）。

    - `disabled`：账号不可用（封号、退单、归还）—— 自动化**不再碰它**；
    - `archived`：软删除，默认列表不再展示；
    - `auto`：解除人工态，立刻按底层判据重新推导（例如账号又能用了）。
    """
    acc = db.query(Account).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")
    if acc.status == req.status:
        return {"message": "状态未变化", "status": acc.status, "success": True}

    set_manual_state(
        db,
        acc,
        req.status,
        reason=req.reason or "",
        actor_id=current.id,
        actor_type="user",
    )
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action=f"account:lifecycle:{req.status}",
            target=acc.username,
            account_id=acc.id,
            detail=req.reason or "",
        )
    )
    db.commit()
    return {
        "message": "状态已更新",
        "status": acc.status,
        "success": True,
    }


@router.put("/{account_id}/automation")
def set_account_automation(
    account_id: int,
    req: AccountAutomationUpdate,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:manage")),
):
    """自动化开关。

    与 `status=disabled` 的区别：`auto_managed=False` 的账号**仍然可用**
    （人照样能手动跑任务），只是巡检/自动重登绕过它 —— 用于敏感账号人工维护。
    """
    acc = db.query(Account).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")
    acc.auto_managed = bool(req.auto_managed)
    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="account:automation",
            target=acc.username,
            account_id=acc.id,
            detail="参与自动化" if req.auto_managed else "不参与自动化",
        )
    )
    db.commit()
    return {
        "message": "自动化开关已更新",
        "auto_managed": acc.auto_managed,
        "success": True,
    }


@router.put("/{account_id}/remark")
def set_account_remark(
    account_id: int,
    req: AccountRemark,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:remark")),
):
    """设置单个账号的备注。

    备注是自由文本（标签是短枚举），所以走单个接口、不做批量 —— 批量给一堆账号写
    同一句备注没有实际意义。与改标签一样：审计 + 账号时间线一次写完。
    """
    acc = db.query(Account).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")

    old_remark = acc.remark or ""
    new_remark = (req.remark or "").strip()[:256]
    if old_remark == new_remark:
        return {"message": "备注未变化", "success": True, "remark": new_remark}
    acc.remark = new_remark
    record_account_action(
        db,
        current,
        account=acc,
        action="account:remark",
        event_type=EVENT_REMARK_CHANGED,
        title=f"备注：{old_remark or '（空）'} → {new_remark or '（空）'}",
        detail={"from": old_remark, "to": new_remark},
    )
    db.commit()
    return {"message": "备注已更新", "success": True, "remark": new_remark}


def _apply_tag_bulk(db: Session, current: User, ids: list[int], tag: str) -> None:
    """批量改标签：更新 + 审计 + **逐账号写事件**。

    先取出对象再更新：`bulk update` 不加载实体，而每个账号的时间线都要各留一条
    「标签从什么改成了什么」——这正是本仓库以前的缺口（`tag_changed` 事件类型
    定义了、前端也渲染了，却从来没有代码发过）。
    """
    accounts = _visible_accounts_query(db, current).filter(Account.id.in_(ids)).all()
    if not accounts:
        return
    previous = {acc.id: (acc.tag or "") for acc in accounts}
    db.query(Account).filter(Account.id.in_([a.id for a in accounts])).update(
        {Account.tag: tag}, synchronize_session=False
    )
    record_audit(
        db,
        current,
        action="account:tag",
        target=f"批量设置标签「{tag}」{len(accounts)} 个账号",
        detail={"to": tag},
    )
    emit_bulk(
        db,
        [
            {
                "account_id": acc.id,
                "event_type": EVENT_TAG_CHANGED,
                "title": f"标签：{previous[acc.id] or '（空）'} → {tag or '（空）'}",
                "category": CATEGORY_OPS,
                "detail": {"from": previous[acc.id], "to": tag},
                "source": "audit",
                "actor_type": "user",
                "actor_id": current.id,
            }
            for acc in accounts
        ],
    )


@router.put("/{account_id}/tag")
def set_account_tag(
    account_id: int,
    req: AccountTag,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """设置单个可见账号的标签。"""
    _require_account_tag_permission(current)
    acc = _visible_accounts_query(db, current).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")
    old_tag = acc.tag or ""
    acc.tag = (req.tag or "").strip()
    record_account_action(
        db,
        current,
        account=acc,
        action="account:tag",
        event_type=EVENT_TAG_CHANGED,
        title=f"标签：{old_tag or '（空）'} → {acc.tag or '（空）'}",
        detail={"from": old_tag, "to": acc.tag},
    )
    db.commit()
    return {"message": "标签已更新", "success": True}


@router.put("/batch-tag")
def batch_tag(
    req: AccountTag,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """批量设置账号标签。"""
    _require_account_tag_permission(current)
    if not req.account_ids:
        raise HTTPException(status_code=400, detail="请选择账号")
    tag = (req.tag or "").strip()
    _apply_tag_bulk(db, current, req.account_ids, tag)
    count = len(req.account_ids)
    db.commit()
    return {"message": f"已为 {count} 个账号设置标签", "success": True}


@router.put("/batch-tag-selection")
def batch_tag_selection(
    req: AccountBulkTag,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """按显式选择或当前筛选结果批量设置账号标签。"""
    _require_account_tag_permission(current)
    ids = _selected_account_ids(db, current, req)
    if not ids:
        raise HTTPException(status_code=400, detail="请选择账号")
    tag = (req.tag_value or "").strip()
    _apply_tag_bulk(db, current, ids, tag)
    count = len(ids)
    db.commit()
    scope = "当前筛选下" if req.all_matching else "选中的"
    return {
        "message": f"已为{scope} {count} 个账号设置标签",
        "success": True,
        "count": count,
    }


@router.get("/tags/list")
def list_tags(
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """获取当前用户可见账号的标签列表。"""
    query = _visible_accounts_query(db, current)
    tags = (
        query.filter(Account.tag != "", Account.tag.isnot(None))
        .with_entities(Account.tag)
        .distinct()
        .all()
    )
    return [t[0] for t in tags if t[0]]


@router.delete("/batch/delete")
def batch_delete_accounts(
    account_ids: str = Query(..., description="逗号分隔的账号ID"),
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:delete")),
):
    """批量删除账号及其关联的登录任务。"""
    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="无效的账号ID")

    # 先删除关联的登录任务
    db.query(LoginTask).filter(LoginTask.account_id.in_(ids)).delete(
        synchronize_session=False
    )
    db.query(DouyuTask).filter(DouyuTask.account_id.in_(ids)).delete(
        synchronize_session=False
    )
    db.query(DouyuWorkbenchAccount).filter(
        DouyuWorkbenchAccount.account_id.in_(ids)
    ).delete(synchronize_session=False)

    # 删除账号
    deleted = (
        db.query(Account).filter(Account.id.in_(ids)).delete(synchronize_session=False)
    )

    # 账号删除会**连带删掉它的事件时间线**（外键），所以留下的痕迹只有审计。
    # 批量删时 account_id 无法表达 N 个账号，改成把删掉的 id 记进 detail ——
    # 出了事故才知道删了哪些，正是本项目 10-03 那次事故的教训。
    record_audit(
        db,
        current,
        action="account:delete",
        target=f"批量删除{deleted}个账号",
        detail={"account_ids": ids[:200], "total_ids": len(ids), "deleted": deleted},
    )
    db.commit()
    return {"message": f"已删除 {deleted} 个账号", "deleted": deleted, "success": True}


@router.post("/batch-delete")
def batch_delete_accounts_selection(
    req: AccountBulkSelection,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:delete")),
):
    """按显式选择或当前筛选结果批量删除账号及其关联任务。"""
    ids = _selected_account_ids(db, current, req)
    if not ids:
        raise HTTPException(status_code=400, detail="请选择账号")

    db.query(LoginTask).filter(LoginTask.account_id.in_(ids)).delete(
        synchronize_session=False
    )
    db.query(DouyuTask).filter(DouyuTask.account_id.in_(ids)).delete(
        synchronize_session=False
    )
    db.query(DouyuWorkbenchAccount).filter(
        DouyuWorkbenchAccount.account_id.in_(ids)
    ).delete(synchronize_session=False)
    deleted = (
        _visible_accounts_query(db, current)
        .filter(Account.id.in_(ids))
        .delete(synchronize_session=False)
    )
    record_audit(
        db,
        current,
        action="account:delete",
        target=f"{'按筛选' if req.all_matching else '批量'}删除{deleted}个账号",
        detail={"account_ids": ids[:200], "total_ids": len(ids), "deleted": deleted},
    )
    db.commit()
    return {"message": f"已删除 {deleted} 个账号", "deleted": deleted, "success": True}


@router.get("/{account_id}/overview")
def account_overview(
    account_id: int,
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """账号详情页的「状态卡 + 统计」。

    状态取 `accounts` 的当前值（覆盖式），统计由 `account_events` 聚合 —— 这正是
    「状态与流水分离」的用法：页面上两者拼起来看。
    """
    acc = _visible_accounts_query(db, current).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")

    stats = (
        db.execute(
            text(
                """
            SELECT
              SUM(CASE WHEN event_type = :recharge THEN amount ELSE 0 END) AS recharge_total,
              SUM(CASE WHEN event_type = :exchange THEN 1 ELSE 0 END) AS exchange_count,
              SUM(CASE WHEN event_type = :exchange THEN -amount ELSE 0 END) AS points_spent,
              SUM(CASE WHEN event_type = :ck_invalid THEN 1 ELSE 0 END) AS ck_invalid_count,
              MIN(CASE WHEN event_type = :elite THEN occurred_at END) AS elite_opened_at,
              MIN(CASE WHEN event_type = :esports THEN occurred_at END) AS esports_opened_at,
              COUNT(*) AS event_count
            FROM account_events WHERE account_id = :aid
            """
            ),
            {
                "aid": account_id,
                "recharge": EVENT_RECHARGE,
                "exchange": EVENT_EXCHANGE,
                "ck_invalid": EVENT_CK_INVALID,
                "elite": EVENT_ELITE_OPENED,
                "esports": EVENT_ESPORTS_OPENED,
            },
        )
        .mappings()
        .first()
        or {}
    )

    # 登录次数取历史记录（事件表不回填，所以登录相关计数仍以 login_tasks 为准）；
    # 「最近 CK 检测」改从**账号**上读（2026-10-04 CK 解耦：ck_checked_at 已搬到 accounts）。
    login_stats = (
        db.execute(
            text(
                """
            SELECT COUNT(*) AS login_count,
                   MAX(finished_at) AS last_login_at
            FROM login_tasks
            WHERE account_id = :aid AND status = 'success'
            """
            ),
            {"aid": account_id},
        )
        .mappings()
        .first()
        or {}
    )

    return {
        "id": acc.id,
        "username": acc.username,
        "nickname": acc.nickname,
        "uid": acc.uid,
        "tag": acc.tag,
        "remark": acc.remark,
        "assigned_to": acc.assigned_to,
        "created_at": acc.created_at,  # 导入时间
        # 生命周期状态（账号现在到底能不能用、要不要人处理）
        "status": acc.status or "",
        "status_label": STATUS_LABELS.get(acc.status or "", acc.status or ""),
        "status_reason": acc.status_reason or "",
        "status_changed_at": acc.status_changed_at,
        "auto_managed": bool(acc.auto_managed),
        # CK 的持有与健康（详情页状态卡要一眼看出「能不能用」）
        "has_cookie": bool(acc.cookie),
        "ck_check_status": acc.ck_check_status or "",
        "ck_checked_at": acc.ck_checked_at,
        # 当前状态（覆盖式字段）
        "points": acc.points,
        "gold_balance": acc.gold_balance,
        "exchange_balance": acc.exchange_balance,
        "game_name": acc.game_name,
        "game_channel": acc.game_channel,
        **bind_payload(acc),
        # 最近一次「一键查询」快照（列表接口刻意**不**返回，避免体积爆炸）
        "overview_snapshot": acc.overview_snapshot,
        "overview_queried_at": acc.overview_queried_at,
        "elite_opened": acc.elite_opened,
        "elite_expire_time": acc.elite_expire_time,
        "esports_points": acc.esports_points,
        "esports_bind_status": acc.esports_bind_status,
        "esports_game_name": acc.esports_game_name,
        "esports_can_change_time": acc.esports_can_change_time,
        # 统计
        "stats": {
            "recharge_total": int(stats.get("recharge_total") or 0),
            "exchange_count": int(stats.get("exchange_count") or 0),
            "points_spent": int(stats.get("points_spent") or 0),
            "ck_invalid_count": int(stats.get("ck_invalid_count") or 0),
            "event_count": int(stats.get("event_count") or 0),
            "login_count": int(login_stats.get("login_count") or 0),
            "last_login_at": login_stats.get("last_login_at"),
            "last_ck_check_at": acc.ck_checked_at,
        },
        # 「开通时间」由事件表提供；事件表从上线起才有，早于上线的不显示。
        "opened_at": {
            "elite": stats.get("elite_opened_at"),
            "esports": stats.get("esports_opened_at"),
        },
    }


@router.get("/{account_id}/events")
def account_events(
    account_id: int,
    page: int = 1,
    page_size: int = 50,
    event_type: str = "",
    category: str = Query(
        "", description="按粗分类筛选：lifecycle / auth / business / ops"
    ),
    db: Session = Depends(get_db),
    current: User = Depends(get_current_user),
):
    """账号时间线（倒序分页）。

    权限沿用账号可见性：客服只能看自己名下账号的事件。

    `category` 是给页面用的「大分类」过滤（状态变迁 / 登录与 CK / 业务 / 人工操作），
    比逐一点 `event_type` 好用：客服最常看的是「人工操作」与「状态变迁」两条线。
    """
    acc = _visible_accounts_query(db, current).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")

    page = max(1, int(page))
    page_size = max(1, min(int(page_size), 200))
    where = "WHERE account_id = :aid"
    params: dict[str, Any] = {"aid": account_id}
    sql_event_type = _query_str(event_type)
    sql_category = _query_str(category)
    if sql_event_type:
        where += " AND event_type = :etype"
        params["etype"] = sql_event_type
    if sql_category:
        where += " AND category = :category"
        params["category"] = sql_category

    total = (
        db.execute(
            text(f"SELECT COUNT(*) FROM account_events {where}"), params
        ).scalar()
        or 0
    )

    rows = (
        db.execute(
            text(
                f"""
                SELECT id, event_type, category, occurred_at, title, amount,
                       balance_after, subject_type, subject_key, detail, source,
                       actor_type, actor_id
                FROM account_events {where}
                ORDER BY occurred_at DESC, id DESC
                LIMIT :limit OFFSET :offset
                """
            ),
            {**params, "limit": page_size, "offset": (page - 1) * page_size},
        )
        .mappings()
        .all()
    )

    return {
        "items": [dict(row) for row in rows],
        "total": int(total),
        "page": page,
        "page_size": page_size,
    }


@router.delete("/{account_id}")
def delete_account(
    account_id: int,
    db: Session = Depends(get_db),
    current: User = Depends(require_permission("account:delete")),
):
    acc = db.query(Account).filter(Account.id == account_id).first()
    if not acc:
        raise HTTPException(status_code=404, detail="账号不存在")

    # 先删除关联的登录任务，避免外键约束失败
    db.query(LoginTask).filter(LoginTask.account_id == account_id).delete(
        synchronize_session=False
    )
    db.query(DouyuTask).filter(DouyuTask.account_id == account_id).delete(
        synchronize_session=False
    )
    db.query(DouyuWorkbenchAccount).filter(
        DouyuWorkbenchAccount.account_id == account_id
    ).delete(synchronize_session=False)
    # 事件表有指向 accounts 的外键，不清会直接删不掉账号。
    # 账号都没了，它的时间线也没有保留意义（审计仍在 audit_logs 里，那份不带外键）。
    db.query(AccountEvent).filter(AccountEvent.account_id == account_id).delete(
        synchronize_session=False
    )

    db.add(
        AuditLog(
            user_id=current.id,
            username=current.username,
            action="account:delete",
            target=acc.username,
            account_id=account_id,
        )
    )
    db.delete(acc)
    db.commit()
    return {"message": "已删除", "success": True}