【安全加密】回归邀请核验：邀请码资格的风控设计

local function checkInvite(invitee, lastLoginTs)
    if os.time() - lastLoginTs < 2592000 then
        sendmsg(invitee, 0, "对方 30 天内登录过，不符合回归条件")
        return false
    end
    local regDays = tonumber(getplayvar(invitee, "HUMAN", "REG_DAYS") or "0")
    if regDays < 30 then
        sendmsg(invitee, 0, "账号注册未满 30 天，不能使用邀请码")
        return false
    end
    return true
end

local function settleInvite(actor, invitee)
    local days = tonumber(getplayvar(invitee, "HUMAN", "BACK_DAYS") or "0")
    if days < 7 then
        sendmsg(actor, 0, "好友回归活跃未满 7 天，暂不能领取答谢礼")
        return
    end
    giveitem(actor, "回归答谢礼盒", 1)
    setplayvar(actor, "HUMAN", "INVITE_DONE", 1, 1)
    sendmsg(actor, 0, "回归答谢礼盒已发放")
end