【数据存储】异库备份：角色与订单的分离备份

-- 异库备份：双链分离
local player = class(actor)
local BACKUP_CHAINS = {"char", "order"}
local function runBackup(player, chain)
    local ts = os.date("%Y%m%d%H")
    setsysvarex("Bak_" .. chain .. "_" .. ts, 1, true)
    setplayvar(player, "HUMAN", "LastBak_" .. chain, ts, true)
    sendmsg(player, 1, 0, chain .. " 链备份完成，时间点 " .. ts .. "。")
end
local function backupAll(player)
    for _, chain in ipairs(BACKUP_CHAINS) do
        runBackup(player, chain)
    end
end

-- 恢复隔离：回滚与补差
local player = class(actor)
local function restoreOrderChain(player, rollbackTs)
    setsysvarex("OrderRollback", rollbackTs, true)
    local lost = 0
    local flow = getplayvar(player, "HUMAN", "RechargeFlow") or ""
    for item in string.gmatch(flow, "[^;]+") do
        local no, ts, amount = string.match(item, "([^|]+)|([^|]+)|(.+)")
        if tonumber(ts) > rollbackTs then
            lost = lost + tonumber(amount)
            sendmail("#" .. (getbaseinfo(player, 3) or ""), 8021, "回滚补差",
                "检测到回滚后完成的充值，已自动补发。", "元宝#" .. amount .. "#0")
        end
    end
    sendmsg(player, 1, 0, "回滚补差完成，补发 " .. lost .. " 元宝。")
end