"""回款人工确认门槛；与生成凭证、保存资料和工资审核分别管理。"""

import hashlib
import json
from datetime import date
from decimal import Decimal

from sqlalchemy import select

from app.core.exceptions import BadRequestError
from app.models import Receipt
from app.services.param_service import resolve_snapshot

CONFIRMATION_PARAM = "receipt.confirmation.enabled"


def enabled(session) -> bool:
    """操作开关取当前生效值，不按历史到账日绕过本次人工确认门槛。"""
    return resolve_snapshot(session, date.today()).boolean(CONFIRMATION_PARAM)


def revision(receipt) -> str:
    """只绑定经办人核对的业务内容；备注和同步时间不使确认无故失效。"""
    values = [
        receipt.id, receipt.business_id, receipt.shipment_id,
        receipt.receipt_date.isoformat(), format(Decimal(receipt.amount).quantize(Decimal("0.01")), "f"),
        receipt.is_barter, receipt.t_plus_id, receipt.source_no,
    ]
    return hashlib.sha256(json.dumps(values, ensure_ascii=False).encode()).hexdigest()


def is_confirmed(receipt) -> bool:
    return bool(
        receipt.confirmation_status == 1
        and receipt.confirmed_by
        and receipt.confirmed_at
        and receipt.confirmed_revision == revision(receipt)
    )


def invalidate(receipt) -> None:
    receipt.confirmation_status = 0
    receipt.confirmed_by = receipt.confirmed_at = receipt.confirmed_revision = None


def ensure_confirmed(session, receipt_ids) -> None:
    """在原核算事务内锁定并核实回款；关闭只跳过人工门槛，不改变凭证资格。"""
    ids = sorted(set(receipt_ids))
    if not ids or not enabled(session):
        return
    rows = list(session.scalars(
        select(Receipt).where(Receipt.id.in_(ids)).order_by(Receipt.id)
        .with_for_update().execution_options(populate_existing=True)
    ))
    if len(rows) != len(ids) or any(not is_confirmed(row) for row in rows):
        raise BadRequestError("存在未人工确认或确认后内容已变化的回款，请先在回款管理逐笔确认")