【数据存储】支付日志的订单状态机

---订单的状态流转
local ORDER_STATE = { created = 1, paying = 2, paid = 3, delivered = 4, closed = 5 }
function OrderLog.transit(orderId, newState)
    local order = orderIndex[orderId]
    local old = order.state
    order.state = newState
    QF_AppendOrderLog(orderId, old, newState, os.time())
    if newState == ORDER_STATE.delivered then
        OrderLog.markSettled(orderId)
    end
end

---延迟到账的补单流程
function OrderLog.recover(orders)
    local recovered = 0
    for _, o in ipairs(orders) do
        if o.state == ORDER_STATE.paid and o.paidAt < os.time() - 1800 then
            OrderDeliver.run(o)
            recovered = recovered + 1
        end
    end
    return recovered
end