【运维发布】玩家召回：回流识别与召回礼包

---login: 登录触发，回流玩家的识别
function login(actor)
    local player = class(actor)
    if not player then return end
    local last = tonumber(getplayvar(actor, 2, "LastLogin")) or 0
    local gap = os.time() - last
    -- 30 天以上未登录判定为回流
    if gap >= 30 * 86400 then
        setplayvar(actor, "HUMAN", "ReturnTag", os.time(), 1)
        sendmail(actor, 8013, "欢迎回来！",
            "归来即是故人，回归礼包已备好",
            "回归礼包|1")
        sendmsg(nil, 1, "欢迎 " .. actor ..
            " 回归玛法大陆！")
    end
    setplayvar(actor, "HUMAN", "LastLogin", os.time(), 1)
end

---回归礼包的分层：按历史投入
function Recall.giftTier(actor)
    local player = class(actor)
    if not player then return 1 end
    local level = actor:GetLevel()
    -- 按回归时的等级分三档
    if level >= 60 then return 3
    elseif level >= 35 then return 2
    end
    return 1
end

---召回的外部渠道：短信与社群的组合
function Recall.notifyExternal(uid)
    local phone = Account.phoneOf(uid)
    if phone then
        Sms.send(phone, "玛法大陆的故人，回归礼已备好：" ..
            "登录即领 3 天双倍经验")
    end
end